4589 lines
99 KiB
C
4589 lines
99 KiB
C
// SPDX-License-Identifier: GPL-2.0
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#include <errno.h>
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#include <inttypes.h>
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#include "string2.h"
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#include <sys/param.h>
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#include <sys/types.h>
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#include <byteswap.h>
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#include <unistd.h>
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#include <regex.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <linux/compiler.h>
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#include <linux/list.h>
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#include <linux/kernel.h>
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#include <linux/bitops.h>
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#include <linux/string.h>
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#include <linux/stringify.h>
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#include <linux/zalloc.h>
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#include <sys/stat.h>
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#include <sys/utsname.h>
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#include <linux/time64.h>
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#include <dirent.h>
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#ifdef HAVE_LIBBPF_SUPPORT
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#include <bpf/libbpf.h>
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#endif
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#include <perf/cpumap.h>
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#include <tools/libc_compat.h> // reallocarray
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#include "dso.h"
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#include "evlist.h"
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#include "evsel.h"
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#include "util/evsel_fprintf.h"
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#include "header.h"
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#include "memswap.h"
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#include "trace-event.h"
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#include "session.h"
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#include "symbol.h"
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#include "debug.h"
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#include "cpumap.h"
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#include "pmu.h"
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#include "pmus.h"
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#include "vdso.h"
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#include "strbuf.h"
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#include "build-id.h"
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#include "data.h"
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#include <api/fs/fs.h>
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#include "asm/bug.h"
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#include "tool.h"
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#include "time-utils.h"
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#include "units.h"
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#include "util/util.h" // perf_exe()
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#include "cputopo.h"
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#include "bpf-event.h"
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#include "bpf-utils.h"
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#include "clockid.h"
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#include <linux/ctype.h>
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#include <internal/lib.h>
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#ifdef HAVE_LIBTRACEEVENT
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#include <traceevent/event-parse.h>
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#endif
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/*
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* magic2 = "PERFILE2"
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* must be a numerical value to let the endianness
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* determine the memory layout. That way we are able
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* to detect endianness when reading the perf.data file
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* back.
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*
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* we check for legacy (PERFFILE) format.
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*/
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static const char *__perf_magic1 = "PERFFILE";
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static const u64 __perf_magic2 = 0x32454c4946524550ULL;
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static const u64 __perf_magic2_sw = 0x50455246494c4532ULL;
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#define PERF_MAGIC __perf_magic2
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const char perf_version_string[] = PERF_VERSION;
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struct perf_file_attr {
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struct perf_event_attr attr;
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struct perf_file_section ids;
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};
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void perf_header__set_feat(struct perf_header *header, int feat)
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{
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__set_bit(feat, header->adds_features);
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}
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void perf_header__clear_feat(struct perf_header *header, int feat)
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{
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__clear_bit(feat, header->adds_features);
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}
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bool perf_header__has_feat(const struct perf_header *header, int feat)
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{
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return test_bit(feat, header->adds_features);
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}
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static int __do_write_fd(struct feat_fd *ff, const void *buf, size_t size)
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{
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ssize_t ret = writen(ff->fd, buf, size);
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if (ret != (ssize_t)size)
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return ret < 0 ? (int)ret : -1;
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return 0;
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}
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static int __do_write_buf(struct feat_fd *ff, const void *buf, size_t size)
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{
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/* struct perf_event_header::size is u16 */
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const size_t max_size = 0xffff - sizeof(struct perf_event_header);
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size_t new_size = ff->size;
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void *addr;
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if (size + ff->offset > max_size)
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return -E2BIG;
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while (size > (new_size - ff->offset))
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new_size <<= 1;
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new_size = min(max_size, new_size);
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if (ff->size < new_size) {
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addr = realloc(ff->buf, new_size);
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if (!addr)
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return -ENOMEM;
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ff->buf = addr;
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ff->size = new_size;
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}
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memcpy(ff->buf + ff->offset, buf, size);
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ff->offset += size;
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return 0;
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}
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/* Return: 0 if succeeded, -ERR if failed. */
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int do_write(struct feat_fd *ff, const void *buf, size_t size)
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{
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if (!ff->buf)
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return __do_write_fd(ff, buf, size);
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return __do_write_buf(ff, buf, size);
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}
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/* Return: 0 if succeeded, -ERR if failed. */
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static int do_write_bitmap(struct feat_fd *ff, unsigned long *set, u64 size)
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{
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u64 *p = (u64 *) set;
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int i, ret;
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ret = do_write(ff, &size, sizeof(size));
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if (ret < 0)
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return ret;
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for (i = 0; (u64) i < BITS_TO_U64(size); i++) {
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ret = do_write(ff, p + i, sizeof(*p));
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if (ret < 0)
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return ret;
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}
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return 0;
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}
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/* Return: 0 if succeeded, -ERR if failed. */
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int write_padded(struct feat_fd *ff, const void *bf,
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size_t count, size_t count_aligned)
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{
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static const char zero_buf[NAME_ALIGN];
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int err = do_write(ff, bf, count);
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if (!err)
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err = do_write(ff, zero_buf, count_aligned - count);
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return err;
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}
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#define string_size(str) \
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(PERF_ALIGN((strlen(str) + 1), NAME_ALIGN) + sizeof(u32))
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/* Return: 0 if succeeded, -ERR if failed. */
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static int do_write_string(struct feat_fd *ff, const char *str)
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{
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u32 len, olen;
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int ret;
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olen = strlen(str) + 1;
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len = PERF_ALIGN(olen, NAME_ALIGN);
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/* write len, incl. \0 */
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ret = do_write(ff, &len, sizeof(len));
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if (ret < 0)
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return ret;
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return write_padded(ff, str, olen, len);
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}
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static int __do_read_fd(struct feat_fd *ff, void *addr, ssize_t size)
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{
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ssize_t ret = readn(ff->fd, addr, size);
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if (ret != size)
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return ret < 0 ? (int)ret : -1;
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return 0;
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}
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static int __do_read_buf(struct feat_fd *ff, void *addr, ssize_t size)
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{
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if (size > (ssize_t)ff->size - ff->offset)
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return -1;
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memcpy(addr, ff->buf + ff->offset, size);
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ff->offset += size;
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return 0;
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}
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static int __do_read(struct feat_fd *ff, void *addr, ssize_t size)
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{
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if (!ff->buf)
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return __do_read_fd(ff, addr, size);
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return __do_read_buf(ff, addr, size);
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}
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static int do_read_u32(struct feat_fd *ff, u32 *addr)
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{
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int ret;
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ret = __do_read(ff, addr, sizeof(*addr));
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if (ret)
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return ret;
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if (ff->ph->needs_swap)
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*addr = bswap_32(*addr);
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return 0;
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}
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static int do_read_u64(struct feat_fd *ff, u64 *addr)
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{
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int ret;
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ret = __do_read(ff, addr, sizeof(*addr));
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if (ret)
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return ret;
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if (ff->ph->needs_swap)
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*addr = bswap_64(*addr);
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return 0;
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}
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static char *do_read_string(struct feat_fd *ff)
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{
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u32 len;
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char *buf;
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if (do_read_u32(ff, &len))
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return NULL;
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buf = malloc(len);
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if (!buf)
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return NULL;
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if (!__do_read(ff, buf, len)) {
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/*
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* strings are padded by zeroes
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* thus the actual strlen of buf
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* may be less than len
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*/
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return buf;
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}
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free(buf);
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return NULL;
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}
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/* Return: 0 if succeeded, -ERR if failed. */
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static int do_read_bitmap(struct feat_fd *ff, unsigned long **pset, u64 *psize)
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{
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unsigned long *set;
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u64 size, *p;
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int i, ret;
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ret = do_read_u64(ff, &size);
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if (ret)
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return ret;
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set = bitmap_zalloc(size);
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if (!set)
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return -ENOMEM;
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p = (u64 *) set;
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for (i = 0; (u64) i < BITS_TO_U64(size); i++) {
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ret = do_read_u64(ff, p + i);
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if (ret < 0) {
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free(set);
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return ret;
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}
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}
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*pset = set;
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*psize = size;
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return 0;
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}
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#ifdef HAVE_LIBTRACEEVENT
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static int write_tracing_data(struct feat_fd *ff,
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struct evlist *evlist)
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{
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if (WARN(ff->buf, "Error: calling %s in pipe-mode.\n", __func__))
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return -1;
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return read_tracing_data(ff->fd, &evlist->core.entries);
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}
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#endif
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static int write_build_id(struct feat_fd *ff,
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struct evlist *evlist __maybe_unused)
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{
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struct perf_session *session;
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int err;
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session = container_of(ff->ph, struct perf_session, header);
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if (!perf_session__read_build_ids(session, true))
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return -1;
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if (WARN(ff->buf, "Error: calling %s in pipe-mode.\n", __func__))
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return -1;
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err = perf_session__write_buildid_table(session, ff);
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if (err < 0) {
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pr_debug("failed to write buildid table\n");
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return err;
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}
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perf_session__cache_build_ids(session);
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return 0;
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}
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static int write_hostname(struct feat_fd *ff,
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struct evlist *evlist __maybe_unused)
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{
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struct utsname uts;
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int ret;
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ret = uname(&uts);
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if (ret < 0)
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return -1;
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return do_write_string(ff, uts.nodename);
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}
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static int write_osrelease(struct feat_fd *ff,
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struct evlist *evlist __maybe_unused)
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{
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struct utsname uts;
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int ret;
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ret = uname(&uts);
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if (ret < 0)
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return -1;
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return do_write_string(ff, uts.release);
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}
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static int write_arch(struct feat_fd *ff,
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struct evlist *evlist __maybe_unused)
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{
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struct utsname uts;
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int ret;
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ret = uname(&uts);
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if (ret < 0)
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return -1;
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return do_write_string(ff, uts.machine);
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}
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static int write_version(struct feat_fd *ff,
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struct evlist *evlist __maybe_unused)
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{
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return do_write_string(ff, perf_version_string);
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}
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static int __write_cpudesc(struct feat_fd *ff, const char *cpuinfo_proc)
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{
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FILE *file;
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char *buf = NULL;
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char *s, *p;
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const char *search = cpuinfo_proc;
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size_t len = 0;
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int ret = -1;
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if (!search)
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return -1;
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file = fopen("/proc/cpuinfo", "r");
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if (!file)
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return -1;
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while (getline(&buf, &len, file) > 0) {
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ret = strncmp(buf, search, strlen(search));
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if (!ret)
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break;
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}
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if (ret) {
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ret = -1;
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goto done;
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}
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s = buf;
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p = strchr(buf, ':');
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if (p && *(p+1) == ' ' && *(p+2))
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s = p + 2;
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p = strchr(s, '\n');
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if (p)
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*p = '\0';
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/* squash extra space characters (branding string) */
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p = s;
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while (*p) {
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if (isspace(*p)) {
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char *r = p + 1;
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char *q = skip_spaces(r);
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*p = ' ';
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if (q != (p+1))
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while ((*r++ = *q++));
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}
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p++;
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}
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ret = do_write_string(ff, s);
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done:
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free(buf);
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fclose(file);
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return ret;
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}
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static int write_cpudesc(struct feat_fd *ff,
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struct evlist *evlist __maybe_unused)
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{
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#if defined(__powerpc__) || defined(__hppa__) || defined(__sparc__)
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#define CPUINFO_PROC { "cpu", }
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#elif defined(__s390__)
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#define CPUINFO_PROC { "vendor_id", }
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#elif defined(__sh__)
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#define CPUINFO_PROC { "cpu type", }
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#elif defined(__alpha__) || defined(__mips__)
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#define CPUINFO_PROC { "cpu model", }
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#elif defined(__arm__)
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#define CPUINFO_PROC { "model name", "Processor", }
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#elif defined(__arc__)
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#define CPUINFO_PROC { "Processor", }
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#elif defined(__xtensa__)
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#define CPUINFO_PROC { "core ID", }
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#elif defined(__loongarch__)
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#define CPUINFO_PROC { "Model Name", }
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#else
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#define CPUINFO_PROC { "model name", }
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#endif
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const char *cpuinfo_procs[] = CPUINFO_PROC;
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#undef CPUINFO_PROC
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unsigned int i;
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for (i = 0; i < ARRAY_SIZE(cpuinfo_procs); i++) {
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int ret;
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ret = __write_cpudesc(ff, cpuinfo_procs[i]);
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if (ret >= 0)
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return ret;
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}
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return -1;
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}
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static int write_nrcpus(struct feat_fd *ff,
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struct evlist *evlist __maybe_unused)
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{
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long nr;
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u32 nrc, nra;
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int ret;
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nrc = cpu__max_present_cpu().cpu;
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nr = sysconf(_SC_NPROCESSORS_ONLN);
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if (nr < 0)
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return -1;
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nra = (u32)(nr & UINT_MAX);
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ret = do_write(ff, &nrc, sizeof(nrc));
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if (ret < 0)
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return ret;
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return do_write(ff, &nra, sizeof(nra));
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}
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|
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static int write_event_desc(struct feat_fd *ff,
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struct evlist *evlist)
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{
|
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struct evsel *evsel;
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u32 nre, nri, sz;
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int ret;
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nre = evlist->core.nr_entries;
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|
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/*
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* write number of events
|
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*/
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ret = do_write(ff, &nre, sizeof(nre));
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if (ret < 0)
|
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return ret;
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|
|
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/*
|
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* size of perf_event_attr struct
|
|
*/
|
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sz = (u32)sizeof(evsel->core.attr);
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ret = do_write(ff, &sz, sizeof(sz));
|
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if (ret < 0)
|
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return ret;
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|
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evlist__for_each_entry(evlist, evsel) {
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ret = do_write(ff, &evsel->core.attr, sz);
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if (ret < 0)
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return ret;
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/*
|
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* write number of unique id per event
|
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* there is one id per instance of an event
|
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*
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* copy into an nri to be independent of the
|
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* type of ids,
|
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*/
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nri = evsel->core.ids;
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ret = do_write(ff, &nri, sizeof(nri));
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if (ret < 0)
|
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return ret;
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|
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/*
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* write event string as passed on cmdline
|
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*/
|
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ret = do_write_string(ff, evsel__name(evsel));
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if (ret < 0)
|
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return ret;
|
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/*
|
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* write unique ids for this event
|
|
*/
|
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ret = do_write(ff, evsel->core.id, evsel->core.ids * sizeof(u64));
|
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if (ret < 0)
|
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return ret;
|
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}
|
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return 0;
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}
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|
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static int write_cmdline(struct feat_fd *ff,
|
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struct evlist *evlist __maybe_unused)
|
|
{
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char pbuf[MAXPATHLEN], *buf;
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int i, ret, n;
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|
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/* actual path to perf binary */
|
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buf = perf_exe(pbuf, MAXPATHLEN);
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|
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/* account for binary path */
|
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n = perf_env.nr_cmdline + 1;
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|
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ret = do_write(ff, &n, sizeof(n));
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = do_write_string(ff, buf);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
for (i = 0 ; i < perf_env.nr_cmdline; i++) {
|
|
ret = do_write_string(ff, perf_env.cmdline_argv[i]);
|
|
if (ret < 0)
|
|
return ret;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
|
|
static int write_cpu_topology(struct feat_fd *ff,
|
|
struct evlist *evlist __maybe_unused)
|
|
{
|
|
struct cpu_topology *tp;
|
|
u32 i;
|
|
int ret, j;
|
|
|
|
tp = cpu_topology__new();
|
|
if (!tp)
|
|
return -1;
|
|
|
|
ret = do_write(ff, &tp->package_cpus_lists, sizeof(tp->package_cpus_lists));
|
|
if (ret < 0)
|
|
goto done;
|
|
|
|
for (i = 0; i < tp->package_cpus_lists; i++) {
|
|
ret = do_write_string(ff, tp->package_cpus_list[i]);
|
|
if (ret < 0)
|
|
goto done;
|
|
}
|
|
ret = do_write(ff, &tp->core_cpus_lists, sizeof(tp->core_cpus_lists));
|
|
if (ret < 0)
|
|
goto done;
|
|
|
|
for (i = 0; i < tp->core_cpus_lists; i++) {
|
|
ret = do_write_string(ff, tp->core_cpus_list[i]);
|
|
if (ret < 0)
|
|
break;
|
|
}
|
|
|
|
ret = perf_env__read_cpu_topology_map(&perf_env);
|
|
if (ret < 0)
|
|
goto done;
|
|
|
|
for (j = 0; j < perf_env.nr_cpus_avail; j++) {
|
|
ret = do_write(ff, &perf_env.cpu[j].core_id,
|
|
sizeof(perf_env.cpu[j].core_id));
|
|
if (ret < 0)
|
|
return ret;
|
|
ret = do_write(ff, &perf_env.cpu[j].socket_id,
|
|
sizeof(perf_env.cpu[j].socket_id));
|
|
if (ret < 0)
|
|
return ret;
|
|
}
|
|
|
|
if (!tp->die_cpus_lists)
|
|
goto done;
|
|
|
|
ret = do_write(ff, &tp->die_cpus_lists, sizeof(tp->die_cpus_lists));
|
|
if (ret < 0)
|
|
goto done;
|
|
|
|
for (i = 0; i < tp->die_cpus_lists; i++) {
|
|
ret = do_write_string(ff, tp->die_cpus_list[i]);
|
|
if (ret < 0)
|
|
goto done;
|
|
}
|
|
|
|
for (j = 0; j < perf_env.nr_cpus_avail; j++) {
|
|
ret = do_write(ff, &perf_env.cpu[j].die_id,
|
|
sizeof(perf_env.cpu[j].die_id));
|
|
if (ret < 0)
|
|
return ret;
|
|
}
|
|
|
|
done:
|
|
cpu_topology__delete(tp);
|
|
return ret;
|
|
}
|
|
|
|
|
|
|
|
static int write_total_mem(struct feat_fd *ff,
|
|
struct evlist *evlist __maybe_unused)
|
|
{
|
|
char *buf = NULL;
|
|
FILE *fp;
|
|
size_t len = 0;
|
|
int ret = -1, n;
|
|
uint64_t mem;
|
|
|
|
fp = fopen("/proc/meminfo", "r");
|
|
if (!fp)
|
|
return -1;
|
|
|
|
while (getline(&buf, &len, fp) > 0) {
|
|
ret = strncmp(buf, "MemTotal:", 9);
|
|
if (!ret)
|
|
break;
|
|
}
|
|
if (!ret) {
|
|
n = sscanf(buf, "%*s %"PRIu64, &mem);
|
|
if (n == 1)
|
|
ret = do_write(ff, &mem, sizeof(mem));
|
|
} else
|
|
ret = -1;
|
|
free(buf);
|
|
fclose(fp);
|
|
return ret;
|
|
}
|
|
|
|
static int write_numa_topology(struct feat_fd *ff,
|
|
struct evlist *evlist __maybe_unused)
|
|
{
|
|
struct numa_topology *tp;
|
|
int ret = -1;
|
|
u32 i;
|
|
|
|
tp = numa_topology__new();
|
|
if (!tp)
|
|
return -ENOMEM;
|
|
|
|
ret = do_write(ff, &tp->nr, sizeof(u32));
|
|
if (ret < 0)
|
|
goto err;
|
|
|
|
for (i = 0; i < tp->nr; i++) {
|
|
struct numa_topology_node *n = &tp->nodes[i];
|
|
|
|
ret = do_write(ff, &n->node, sizeof(u32));
|
|
if (ret < 0)
|
|
goto err;
|
|
|
|
ret = do_write(ff, &n->mem_total, sizeof(u64));
|
|
if (ret)
|
|
goto err;
|
|
|
|
ret = do_write(ff, &n->mem_free, sizeof(u64));
|
|
if (ret)
|
|
goto err;
|
|
|
|
ret = do_write_string(ff, n->cpus);
|
|
if (ret < 0)
|
|
goto err;
|
|
}
|
|
|
|
ret = 0;
|
|
|
|
err:
|
|
numa_topology__delete(tp);
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* File format:
|
|
*
|
|
* struct pmu_mappings {
|
|
* u32 pmu_num;
|
|
* struct pmu_map {
|
|
* u32 type;
|
|
* char name[];
|
|
* }[pmu_num];
|
|
* };
|
|
*/
|
|
|
|
static int write_pmu_mappings(struct feat_fd *ff,
|
|
struct evlist *evlist __maybe_unused)
|
|
{
|
|
struct perf_pmu *pmu = NULL;
|
|
u32 pmu_num = 0;
|
|
int ret;
|
|
|
|
/*
|
|
* Do a first pass to count number of pmu to avoid lseek so this
|
|
* works in pipe mode as well.
|
|
*/
|
|
while ((pmu = perf_pmus__scan(pmu)))
|
|
pmu_num++;
|
|
|
|
ret = do_write(ff, &pmu_num, sizeof(pmu_num));
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
while ((pmu = perf_pmus__scan(pmu))) {
|
|
ret = do_write(ff, &pmu->type, sizeof(pmu->type));
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = do_write_string(ff, pmu->name);
|
|
if (ret < 0)
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* File format:
|
|
*
|
|
* struct group_descs {
|
|
* u32 nr_groups;
|
|
* struct group_desc {
|
|
* char name[];
|
|
* u32 leader_idx;
|
|
* u32 nr_members;
|
|
* }[nr_groups];
|
|
* };
|
|
*/
|
|
static int write_group_desc(struct feat_fd *ff,
|
|
struct evlist *evlist)
|
|
{
|
|
u32 nr_groups = evlist__nr_groups(evlist);
|
|
struct evsel *evsel;
|
|
int ret;
|
|
|
|
ret = do_write(ff, &nr_groups, sizeof(nr_groups));
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
evlist__for_each_entry(evlist, evsel) {
|
|
if (evsel__is_group_leader(evsel) && evsel->core.nr_members > 1) {
|
|
const char *name = evsel->group_name ?: "{anon_group}";
|
|
u32 leader_idx = evsel->core.idx;
|
|
u32 nr_members = evsel->core.nr_members;
|
|
|
|
ret = do_write_string(ff, name);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = do_write(ff, &leader_idx, sizeof(leader_idx));
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = do_write(ff, &nr_members, sizeof(nr_members));
|
|
if (ret < 0)
|
|
return ret;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Return the CPU id as a raw string.
|
|
*
|
|
* Each architecture should provide a more precise id string that
|
|
* can be use to match the architecture's "mapfile".
|
|
*/
|
|
char * __weak get_cpuid_str(struct perf_pmu *pmu __maybe_unused)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
/* Return zero when the cpuid from the mapfile.csv matches the
|
|
* cpuid string generated on this platform.
|
|
* Otherwise return non-zero.
|
|
*/
|
|
int __weak strcmp_cpuid_str(const char *mapcpuid, const char *cpuid)
|
|
{
|
|
regex_t re;
|
|
regmatch_t pmatch[1];
|
|
int match;
|
|
|
|
if (regcomp(&re, mapcpuid, REG_EXTENDED) != 0) {
|
|
/* Warn unable to generate match particular string. */
|
|
pr_info("Invalid regular expression %s\n", mapcpuid);
|
|
return 1;
|
|
}
|
|
|
|
match = !regexec(&re, cpuid, 1, pmatch, 0);
|
|
regfree(&re);
|
|
if (match) {
|
|
size_t match_len = (pmatch[0].rm_eo - pmatch[0].rm_so);
|
|
|
|
/* Verify the entire string matched. */
|
|
if (match_len == strlen(cpuid))
|
|
return 0;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* default get_cpuid(): nothing gets recorded
|
|
* actual implementation must be in arch/$(SRCARCH)/util/header.c
|
|
*/
|
|
int __weak get_cpuid(char *buffer __maybe_unused, size_t sz __maybe_unused)
|
|
{
|
|
return ENOSYS; /* Not implemented */
|
|
}
|
|
|
|
static int write_cpuid(struct feat_fd *ff,
|
|
struct evlist *evlist __maybe_unused)
|
|
{
|
|
char buffer[64];
|
|
int ret;
|
|
|
|
ret = get_cpuid(buffer, sizeof(buffer));
|
|
if (ret)
|
|
return -1;
|
|
|
|
return do_write_string(ff, buffer);
|
|
}
|
|
|
|
static int write_branch_stack(struct feat_fd *ff __maybe_unused,
|
|
struct evlist *evlist __maybe_unused)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static int write_auxtrace(struct feat_fd *ff,
|
|
struct evlist *evlist __maybe_unused)
|
|
{
|
|
struct perf_session *session;
|
|
int err;
|
|
|
|
if (WARN(ff->buf, "Error: calling %s in pipe-mode.\n", __func__))
|
|
return -1;
|
|
|
|
session = container_of(ff->ph, struct perf_session, header);
|
|
|
|
err = auxtrace_index__write(ff->fd, &session->auxtrace_index);
|
|
if (err < 0)
|
|
pr_err("Failed to write auxtrace index\n");
|
|
return err;
|
|
}
|
|
|
|
static int write_clockid(struct feat_fd *ff,
|
|
struct evlist *evlist __maybe_unused)
|
|
{
|
|
return do_write(ff, &ff->ph->env.clock.clockid_res_ns,
|
|
sizeof(ff->ph->env.clock.clockid_res_ns));
|
|
}
|
|
|
|
static int write_clock_data(struct feat_fd *ff,
|
|
struct evlist *evlist __maybe_unused)
|
|
{
|
|
u64 *data64;
|
|
u32 data32;
|
|
int ret;
|
|
|
|
/* version */
|
|
data32 = 1;
|
|
|
|
ret = do_write(ff, &data32, sizeof(data32));
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* clockid */
|
|
data32 = ff->ph->env.clock.clockid;
|
|
|
|
ret = do_write(ff, &data32, sizeof(data32));
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* TOD ref time */
|
|
data64 = &ff->ph->env.clock.tod_ns;
|
|
|
|
ret = do_write(ff, data64, sizeof(*data64));
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* clockid ref time */
|
|
data64 = &ff->ph->env.clock.clockid_ns;
|
|
|
|
return do_write(ff, data64, sizeof(*data64));
|
|
}
|
|
|
|
static int write_hybrid_topology(struct feat_fd *ff,
|
|
struct evlist *evlist __maybe_unused)
|
|
{
|
|
struct hybrid_topology *tp;
|
|
int ret;
|
|
u32 i;
|
|
|
|
tp = hybrid_topology__new();
|
|
if (!tp)
|
|
return -ENOENT;
|
|
|
|
ret = do_write(ff, &tp->nr, sizeof(u32));
|
|
if (ret < 0)
|
|
goto err;
|
|
|
|
for (i = 0; i < tp->nr; i++) {
|
|
struct hybrid_topology_node *n = &tp->nodes[i];
|
|
|
|
ret = do_write_string(ff, n->pmu_name);
|
|
if (ret < 0)
|
|
goto err;
|
|
|
|
ret = do_write_string(ff, n->cpus);
|
|
if (ret < 0)
|
|
goto err;
|
|
}
|
|
|
|
ret = 0;
|
|
|
|
err:
|
|
hybrid_topology__delete(tp);
|
|
return ret;
|
|
}
|
|
|
|
static int write_dir_format(struct feat_fd *ff,
|
|
struct evlist *evlist __maybe_unused)
|
|
{
|
|
struct perf_session *session;
|
|
struct perf_data *data;
|
|
|
|
session = container_of(ff->ph, struct perf_session, header);
|
|
data = session->data;
|
|
|
|
if (WARN_ON(!perf_data__is_dir(data)))
|
|
return -1;
|
|
|
|
return do_write(ff, &data->dir.version, sizeof(data->dir.version));
|
|
}
|
|
|
|
/*
|
|
* Check whether a CPU is online
|
|
*
|
|
* Returns:
|
|
* 1 -> if CPU is online
|
|
* 0 -> if CPU is offline
|
|
* -1 -> error case
|
|
*/
|
|
int is_cpu_online(unsigned int cpu)
|
|
{
|
|
char *str;
|
|
size_t strlen;
|
|
char buf[256];
|
|
int status = -1;
|
|
struct stat statbuf;
|
|
|
|
snprintf(buf, sizeof(buf),
|
|
"/sys/devices/system/cpu/cpu%d", cpu);
|
|
if (stat(buf, &statbuf) != 0)
|
|
return 0;
|
|
|
|
/*
|
|
* Check if /sys/devices/system/cpu/cpux/online file
|
|
* exists. Some cases cpu0 won't have online file since
|
|
* it is not expected to be turned off generally.
|
|
* In kernels without CONFIG_HOTPLUG_CPU, this
|
|
* file won't exist
|
|
*/
|
|
snprintf(buf, sizeof(buf),
|
|
"/sys/devices/system/cpu/cpu%d/online", cpu);
|
|
if (stat(buf, &statbuf) != 0)
|
|
return 1;
|
|
|
|
/*
|
|
* Read online file using sysfs__read_str.
|
|
* If read or open fails, return -1.
|
|
* If read succeeds, return value from file
|
|
* which gets stored in "str"
|
|
*/
|
|
snprintf(buf, sizeof(buf),
|
|
"devices/system/cpu/cpu%d/online", cpu);
|
|
|
|
if (sysfs__read_str(buf, &str, &strlen) < 0)
|
|
return status;
|
|
|
|
status = atoi(str);
|
|
|
|
free(str);
|
|
return status;
|
|
}
|
|
|
|
#ifdef HAVE_LIBBPF_SUPPORT
|
|
static int write_bpf_prog_info(struct feat_fd *ff,
|
|
struct evlist *evlist __maybe_unused)
|
|
{
|
|
struct perf_env *env = &ff->ph->env;
|
|
struct rb_root *root;
|
|
struct rb_node *next;
|
|
int ret;
|
|
|
|
down_read(&env->bpf_progs.lock);
|
|
|
|
ret = do_write(ff, &env->bpf_progs.infos_cnt,
|
|
sizeof(env->bpf_progs.infos_cnt));
|
|
if (ret < 0)
|
|
goto out;
|
|
|
|
root = &env->bpf_progs.infos;
|
|
next = rb_first(root);
|
|
while (next) {
|
|
struct bpf_prog_info_node *node;
|
|
size_t len;
|
|
|
|
node = rb_entry(next, struct bpf_prog_info_node, rb_node);
|
|
next = rb_next(&node->rb_node);
|
|
len = sizeof(struct perf_bpil) +
|
|
node->info_linear->data_len;
|
|
|
|
/* before writing to file, translate address to offset */
|
|
bpil_addr_to_offs(node->info_linear);
|
|
ret = do_write(ff, node->info_linear, len);
|
|
/*
|
|
* translate back to address even when do_write() fails,
|
|
* so that this function never changes the data.
|
|
*/
|
|
bpil_offs_to_addr(node->info_linear);
|
|
if (ret < 0)
|
|
goto out;
|
|
}
|
|
out:
|
|
up_read(&env->bpf_progs.lock);
|
|
return ret;
|
|
}
|
|
|
|
static int write_bpf_btf(struct feat_fd *ff,
|
|
struct evlist *evlist __maybe_unused)
|
|
{
|
|
struct perf_env *env = &ff->ph->env;
|
|
struct rb_root *root;
|
|
struct rb_node *next;
|
|
int ret;
|
|
|
|
down_read(&env->bpf_progs.lock);
|
|
|
|
ret = do_write(ff, &env->bpf_progs.btfs_cnt,
|
|
sizeof(env->bpf_progs.btfs_cnt));
|
|
|
|
if (ret < 0)
|
|
goto out;
|
|
|
|
root = &env->bpf_progs.btfs;
|
|
next = rb_first(root);
|
|
while (next) {
|
|
struct btf_node *node;
|
|
|
|
node = rb_entry(next, struct btf_node, rb_node);
|
|
next = rb_next(&node->rb_node);
|
|
ret = do_write(ff, &node->id,
|
|
sizeof(u32) * 2 + node->data_size);
|
|
if (ret < 0)
|
|
goto out;
|
|
}
|
|
out:
|
|
up_read(&env->bpf_progs.lock);
|
|
return ret;
|
|
}
|
|
#endif // HAVE_LIBBPF_SUPPORT
|
|
|
|
static int cpu_cache_level__sort(const void *a, const void *b)
|
|
{
|
|
struct cpu_cache_level *cache_a = (struct cpu_cache_level *)a;
|
|
struct cpu_cache_level *cache_b = (struct cpu_cache_level *)b;
|
|
|
|
return cache_a->level - cache_b->level;
|
|
}
|
|
|
|
static bool cpu_cache_level__cmp(struct cpu_cache_level *a, struct cpu_cache_level *b)
|
|
{
|
|
if (a->level != b->level)
|
|
return false;
|
|
|
|
if (a->line_size != b->line_size)
|
|
return false;
|
|
|
|
if (a->sets != b->sets)
|
|
return false;
|
|
|
|
if (a->ways != b->ways)
|
|
return false;
|
|
|
|
if (strcmp(a->type, b->type))
|
|
return false;
|
|
|
|
if (strcmp(a->size, b->size))
|
|
return false;
|
|
|
|
if (strcmp(a->map, b->map))
|
|
return false;
|
|
|
|
return true;
|
|
}
|
|
|
|
static int cpu_cache_level__read(struct cpu_cache_level *cache, u32 cpu, u16 level)
|
|
{
|
|
char path[PATH_MAX], file[PATH_MAX];
|
|
struct stat st;
|
|
size_t len;
|
|
|
|
scnprintf(path, PATH_MAX, "devices/system/cpu/cpu%d/cache/index%d/", cpu, level);
|
|
scnprintf(file, PATH_MAX, "%s/%s", sysfs__mountpoint(), path);
|
|
|
|
if (stat(file, &st))
|
|
return 1;
|
|
|
|
scnprintf(file, PATH_MAX, "%s/level", path);
|
|
if (sysfs__read_int(file, (int *) &cache->level))
|
|
return -1;
|
|
|
|
scnprintf(file, PATH_MAX, "%s/coherency_line_size", path);
|
|
if (sysfs__read_int(file, (int *) &cache->line_size))
|
|
return -1;
|
|
|
|
scnprintf(file, PATH_MAX, "%s/number_of_sets", path);
|
|
if (sysfs__read_int(file, (int *) &cache->sets))
|
|
return -1;
|
|
|
|
scnprintf(file, PATH_MAX, "%s/ways_of_associativity", path);
|
|
if (sysfs__read_int(file, (int *) &cache->ways))
|
|
return -1;
|
|
|
|
scnprintf(file, PATH_MAX, "%s/type", path);
|
|
if (sysfs__read_str(file, &cache->type, &len))
|
|
return -1;
|
|
|
|
cache->type[len] = 0;
|
|
cache->type = strim(cache->type);
|
|
|
|
scnprintf(file, PATH_MAX, "%s/size", path);
|
|
if (sysfs__read_str(file, &cache->size, &len)) {
|
|
zfree(&cache->type);
|
|
return -1;
|
|
}
|
|
|
|
cache->size[len] = 0;
|
|
cache->size = strim(cache->size);
|
|
|
|
scnprintf(file, PATH_MAX, "%s/shared_cpu_list", path);
|
|
if (sysfs__read_str(file, &cache->map, &len)) {
|
|
zfree(&cache->size);
|
|
zfree(&cache->type);
|
|
return -1;
|
|
}
|
|
|
|
cache->map[len] = 0;
|
|
cache->map = strim(cache->map);
|
|
return 0;
|
|
}
|
|
|
|
static void cpu_cache_level__fprintf(FILE *out, struct cpu_cache_level *c)
|
|
{
|
|
fprintf(out, "L%d %-15s %8s [%s]\n", c->level, c->type, c->size, c->map);
|
|
}
|
|
|
|
/*
|
|
* Build caches levels for a particular CPU from the data in
|
|
* /sys/devices/system/cpu/cpu<cpu>/cache/
|
|
* The cache level data is stored in caches[] from index at
|
|
* *cntp.
|
|
*/
|
|
int build_caches_for_cpu(u32 cpu, struct cpu_cache_level caches[], u32 *cntp)
|
|
{
|
|
u16 level;
|
|
|
|
for (level = 0; level < MAX_CACHE_LVL; level++) {
|
|
struct cpu_cache_level c;
|
|
int err;
|
|
u32 i;
|
|
|
|
err = cpu_cache_level__read(&c, cpu, level);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
if (err == 1)
|
|
break;
|
|
|
|
for (i = 0; i < *cntp; i++) {
|
|
if (cpu_cache_level__cmp(&c, &caches[i]))
|
|
break;
|
|
}
|
|
|
|
if (i == *cntp) {
|
|
caches[*cntp] = c;
|
|
*cntp = *cntp + 1;
|
|
} else
|
|
cpu_cache_level__free(&c);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int build_caches(struct cpu_cache_level caches[], u32 *cntp)
|
|
{
|
|
u32 nr, cpu, cnt = 0;
|
|
|
|
nr = cpu__max_cpu().cpu;
|
|
|
|
for (cpu = 0; cpu < nr; cpu++) {
|
|
int ret = build_caches_for_cpu(cpu, caches, &cnt);
|
|
|
|
if (ret)
|
|
return ret;
|
|
}
|
|
*cntp = cnt;
|
|
return 0;
|
|
}
|
|
|
|
static int write_cache(struct feat_fd *ff,
|
|
struct evlist *evlist __maybe_unused)
|
|
{
|
|
u32 max_caches = cpu__max_cpu().cpu * MAX_CACHE_LVL;
|
|
struct cpu_cache_level caches[max_caches];
|
|
u32 cnt = 0, i, version = 1;
|
|
int ret;
|
|
|
|
ret = build_caches(caches, &cnt);
|
|
if (ret)
|
|
goto out;
|
|
|
|
qsort(&caches, cnt, sizeof(struct cpu_cache_level), cpu_cache_level__sort);
|
|
|
|
ret = do_write(ff, &version, sizeof(u32));
|
|
if (ret < 0)
|
|
goto out;
|
|
|
|
ret = do_write(ff, &cnt, sizeof(u32));
|
|
if (ret < 0)
|
|
goto out;
|
|
|
|
for (i = 0; i < cnt; i++) {
|
|
struct cpu_cache_level *c = &caches[i];
|
|
|
|
#define _W(v) \
|
|
ret = do_write(ff, &c->v, sizeof(u32)); \
|
|
if (ret < 0) \
|
|
goto out;
|
|
|
|
_W(level)
|
|
_W(line_size)
|
|
_W(sets)
|
|
_W(ways)
|
|
#undef _W
|
|
|
|
#define _W(v) \
|
|
ret = do_write_string(ff, (const char *) c->v); \
|
|
if (ret < 0) \
|
|
goto out;
|
|
|
|
_W(type)
|
|
_W(size)
|
|
_W(map)
|
|
#undef _W
|
|
}
|
|
|
|
out:
|
|
for (i = 0; i < cnt; i++)
|
|
cpu_cache_level__free(&caches[i]);
|
|
return ret;
|
|
}
|
|
|
|
static int write_stat(struct feat_fd *ff __maybe_unused,
|
|
struct evlist *evlist __maybe_unused)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static int write_sample_time(struct feat_fd *ff,
|
|
struct evlist *evlist)
|
|
{
|
|
int ret;
|
|
|
|
ret = do_write(ff, &evlist->first_sample_time,
|
|
sizeof(evlist->first_sample_time));
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
return do_write(ff, &evlist->last_sample_time,
|
|
sizeof(evlist->last_sample_time));
|
|
}
|
|
|
|
|
|
static int memory_node__read(struct memory_node *n, unsigned long idx)
|
|
{
|
|
unsigned int phys, size = 0;
|
|
char path[PATH_MAX];
|
|
struct dirent *ent;
|
|
DIR *dir;
|
|
|
|
#define for_each_memory(mem, dir) \
|
|
while ((ent = readdir(dir))) \
|
|
if (strcmp(ent->d_name, ".") && \
|
|
strcmp(ent->d_name, "..") && \
|
|
sscanf(ent->d_name, "memory%u", &mem) == 1)
|
|
|
|
scnprintf(path, PATH_MAX,
|
|
"%s/devices/system/node/node%lu",
|
|
sysfs__mountpoint(), idx);
|
|
|
|
dir = opendir(path);
|
|
if (!dir) {
|
|
pr_warning("failed: can't open memory sysfs data\n");
|
|
return -1;
|
|
}
|
|
|
|
for_each_memory(phys, dir) {
|
|
size = max(phys, size);
|
|
}
|
|
|
|
size++;
|
|
|
|
n->set = bitmap_zalloc(size);
|
|
if (!n->set) {
|
|
closedir(dir);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
n->node = idx;
|
|
n->size = size;
|
|
|
|
rewinddir(dir);
|
|
|
|
for_each_memory(phys, dir) {
|
|
__set_bit(phys, n->set);
|
|
}
|
|
|
|
closedir(dir);
|
|
return 0;
|
|
}
|
|
|
|
static void memory_node__delete_nodes(struct memory_node *nodesp, u64 cnt)
|
|
{
|
|
for (u64 i = 0; i < cnt; i++)
|
|
bitmap_free(nodesp[i].set);
|
|
|
|
free(nodesp);
|
|
}
|
|
|
|
static int memory_node__sort(const void *a, const void *b)
|
|
{
|
|
const struct memory_node *na = a;
|
|
const struct memory_node *nb = b;
|
|
|
|
return na->node - nb->node;
|
|
}
|
|
|
|
static int build_mem_topology(struct memory_node **nodesp, u64 *cntp)
|
|
{
|
|
char path[PATH_MAX];
|
|
struct dirent *ent;
|
|
DIR *dir;
|
|
int ret = 0;
|
|
size_t cnt = 0, size = 0;
|
|
struct memory_node *nodes = NULL;
|
|
|
|
scnprintf(path, PATH_MAX, "%s/devices/system/node/",
|
|
sysfs__mountpoint());
|
|
|
|
dir = opendir(path);
|
|
if (!dir) {
|
|
pr_debug2("%s: couldn't read %s, does this arch have topology information?\n",
|
|
__func__, path);
|
|
return -1;
|
|
}
|
|
|
|
while (!ret && (ent = readdir(dir))) {
|
|
unsigned int idx;
|
|
int r;
|
|
|
|
if (!strcmp(ent->d_name, ".") ||
|
|
!strcmp(ent->d_name, ".."))
|
|
continue;
|
|
|
|
r = sscanf(ent->d_name, "node%u", &idx);
|
|
if (r != 1)
|
|
continue;
|
|
|
|
if (cnt >= size) {
|
|
struct memory_node *new_nodes =
|
|
reallocarray(nodes, cnt + 4, sizeof(*nodes));
|
|
|
|
if (!new_nodes) {
|
|
pr_err("Failed to write MEM_TOPOLOGY, size %zd nodes\n", size);
|
|
ret = -ENOMEM;
|
|
goto out;
|
|
}
|
|
nodes = new_nodes;
|
|
size += 4;
|
|
}
|
|
ret = memory_node__read(&nodes[cnt], idx);
|
|
if (!ret)
|
|
cnt += 1;
|
|
}
|
|
out:
|
|
closedir(dir);
|
|
if (!ret) {
|
|
*cntp = cnt;
|
|
*nodesp = nodes;
|
|
qsort(nodes, cnt, sizeof(nodes[0]), memory_node__sort);
|
|
} else
|
|
memory_node__delete_nodes(nodes, cnt);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* The MEM_TOPOLOGY holds physical memory map for every
|
|
* node in system. The format of data is as follows:
|
|
*
|
|
* 0 - version | for future changes
|
|
* 8 - block_size_bytes | /sys/devices/system/memory/block_size_bytes
|
|
* 16 - count | number of nodes
|
|
*
|
|
* For each node we store map of physical indexes for
|
|
* each node:
|
|
*
|
|
* 32 - node id | node index
|
|
* 40 - size | size of bitmap
|
|
* 48 - bitmap | bitmap of memory indexes that belongs to node
|
|
*/
|
|
static int write_mem_topology(struct feat_fd *ff __maybe_unused,
|
|
struct evlist *evlist __maybe_unused)
|
|
{
|
|
struct memory_node *nodes = NULL;
|
|
u64 bsize, version = 1, i, nr = 0;
|
|
int ret;
|
|
|
|
ret = sysfs__read_xll("devices/system/memory/block_size_bytes",
|
|
(unsigned long long *) &bsize);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = build_mem_topology(&nodes, &nr);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = do_write(ff, &version, sizeof(version));
|
|
if (ret < 0)
|
|
goto out;
|
|
|
|
ret = do_write(ff, &bsize, sizeof(bsize));
|
|
if (ret < 0)
|
|
goto out;
|
|
|
|
ret = do_write(ff, &nr, sizeof(nr));
|
|
if (ret < 0)
|
|
goto out;
|
|
|
|
for (i = 0; i < nr; i++) {
|
|
struct memory_node *n = &nodes[i];
|
|
|
|
#define _W(v) \
|
|
ret = do_write(ff, &n->v, sizeof(n->v)); \
|
|
if (ret < 0) \
|
|
goto out;
|
|
|
|
_W(node)
|
|
_W(size)
|
|
|
|
#undef _W
|
|
|
|
ret = do_write_bitmap(ff, n->set, n->size);
|
|
if (ret < 0)
|
|
goto out;
|
|
}
|
|
|
|
out:
|
|
memory_node__delete_nodes(nodes, nr);
|
|
return ret;
|
|
}
|
|
|
|
static int write_compressed(struct feat_fd *ff __maybe_unused,
|
|
struct evlist *evlist __maybe_unused)
|
|
{
|
|
int ret;
|
|
|
|
ret = do_write(ff, &(ff->ph->env.comp_ver), sizeof(ff->ph->env.comp_ver));
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = do_write(ff, &(ff->ph->env.comp_type), sizeof(ff->ph->env.comp_type));
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = do_write(ff, &(ff->ph->env.comp_level), sizeof(ff->ph->env.comp_level));
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = do_write(ff, &(ff->ph->env.comp_ratio), sizeof(ff->ph->env.comp_ratio));
|
|
if (ret)
|
|
return ret;
|
|
|
|
return do_write(ff, &(ff->ph->env.comp_mmap_len), sizeof(ff->ph->env.comp_mmap_len));
|
|
}
|
|
|
|
static int __write_pmu_caps(struct feat_fd *ff, struct perf_pmu *pmu,
|
|
bool write_pmu)
|
|
{
|
|
struct perf_pmu_caps *caps = NULL;
|
|
int ret;
|
|
|
|
ret = do_write(ff, &pmu->nr_caps, sizeof(pmu->nr_caps));
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
list_for_each_entry(caps, &pmu->caps, list) {
|
|
ret = do_write_string(ff, caps->name);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = do_write_string(ff, caps->value);
|
|
if (ret < 0)
|
|
return ret;
|
|
}
|
|
|
|
if (write_pmu) {
|
|
ret = do_write_string(ff, pmu->name);
|
|
if (ret < 0)
|
|
return ret;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int write_cpu_pmu_caps(struct feat_fd *ff,
|
|
struct evlist *evlist __maybe_unused)
|
|
{
|
|
struct perf_pmu *cpu_pmu = perf_pmus__find("cpu");
|
|
int ret;
|
|
|
|
if (!cpu_pmu)
|
|
return -ENOENT;
|
|
|
|
ret = perf_pmu__caps_parse(cpu_pmu);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
return __write_pmu_caps(ff, cpu_pmu, false);
|
|
}
|
|
|
|
static int write_pmu_caps(struct feat_fd *ff,
|
|
struct evlist *evlist __maybe_unused)
|
|
{
|
|
struct perf_pmu *pmu = NULL;
|
|
int nr_pmu = 0;
|
|
int ret;
|
|
|
|
while ((pmu = perf_pmus__scan(pmu))) {
|
|
if (!strcmp(pmu->name, "cpu")) {
|
|
/*
|
|
* The "cpu" PMU is special and covered by
|
|
* HEADER_CPU_PMU_CAPS. Note, core PMUs are
|
|
* counted/written here for ARM, s390 and Intel hybrid.
|
|
*/
|
|
continue;
|
|
}
|
|
if (perf_pmu__caps_parse(pmu) <= 0)
|
|
continue;
|
|
nr_pmu++;
|
|
}
|
|
|
|
ret = do_write(ff, &nr_pmu, sizeof(nr_pmu));
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
if (!nr_pmu)
|
|
return 0;
|
|
|
|
/*
|
|
* Note older perf tools assume core PMUs come first, this is a property
|
|
* of perf_pmus__scan.
|
|
*/
|
|
pmu = NULL;
|
|
while ((pmu = perf_pmus__scan(pmu))) {
|
|
if (!strcmp(pmu->name, "cpu")) {
|
|
/* Skip as above. */
|
|
continue;
|
|
}
|
|
if (perf_pmu__caps_parse(pmu) <= 0)
|
|
continue;
|
|
ret = __write_pmu_caps(ff, pmu, true);
|
|
if (ret < 0)
|
|
return ret;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static void print_hostname(struct feat_fd *ff, FILE *fp)
|
|
{
|
|
fprintf(fp, "# hostname : %s\n", ff->ph->env.hostname);
|
|
}
|
|
|
|
static void print_osrelease(struct feat_fd *ff, FILE *fp)
|
|
{
|
|
fprintf(fp, "# os release : %s\n", ff->ph->env.os_release);
|
|
}
|
|
|
|
static void print_arch(struct feat_fd *ff, FILE *fp)
|
|
{
|
|
fprintf(fp, "# arch : %s\n", ff->ph->env.arch);
|
|
}
|
|
|
|
static void print_cpudesc(struct feat_fd *ff, FILE *fp)
|
|
{
|
|
fprintf(fp, "# cpudesc : %s\n", ff->ph->env.cpu_desc);
|
|
}
|
|
|
|
static void print_nrcpus(struct feat_fd *ff, FILE *fp)
|
|
{
|
|
fprintf(fp, "# nrcpus online : %u\n", ff->ph->env.nr_cpus_online);
|
|
fprintf(fp, "# nrcpus avail : %u\n", ff->ph->env.nr_cpus_avail);
|
|
}
|
|
|
|
static void print_version(struct feat_fd *ff, FILE *fp)
|
|
{
|
|
fprintf(fp, "# perf version : %s\n", ff->ph->env.version);
|
|
}
|
|
|
|
static void print_cmdline(struct feat_fd *ff, FILE *fp)
|
|
{
|
|
int nr, i;
|
|
|
|
nr = ff->ph->env.nr_cmdline;
|
|
|
|
fprintf(fp, "# cmdline : ");
|
|
|
|
for (i = 0; i < nr; i++) {
|
|
char *argv_i = strdup(ff->ph->env.cmdline_argv[i]);
|
|
if (!argv_i) {
|
|
fprintf(fp, "%s ", ff->ph->env.cmdline_argv[i]);
|
|
} else {
|
|
char *mem = argv_i;
|
|
do {
|
|
char *quote = strchr(argv_i, '\'');
|
|
if (!quote)
|
|
break;
|
|
*quote++ = '\0';
|
|
fprintf(fp, "%s\\\'", argv_i);
|
|
argv_i = quote;
|
|
} while (1);
|
|
fprintf(fp, "%s ", argv_i);
|
|
free(mem);
|
|
}
|
|
}
|
|
fputc('\n', fp);
|
|
}
|
|
|
|
static void print_cpu_topology(struct feat_fd *ff, FILE *fp)
|
|
{
|
|
struct perf_header *ph = ff->ph;
|
|
int cpu_nr = ph->env.nr_cpus_avail;
|
|
int nr, i;
|
|
char *str;
|
|
|
|
nr = ph->env.nr_sibling_cores;
|
|
str = ph->env.sibling_cores;
|
|
|
|
for (i = 0; i < nr; i++) {
|
|
fprintf(fp, "# sibling sockets : %s\n", str);
|
|
str += strlen(str) + 1;
|
|
}
|
|
|
|
if (ph->env.nr_sibling_dies) {
|
|
nr = ph->env.nr_sibling_dies;
|
|
str = ph->env.sibling_dies;
|
|
|
|
for (i = 0; i < nr; i++) {
|
|
fprintf(fp, "# sibling dies : %s\n", str);
|
|
str += strlen(str) + 1;
|
|
}
|
|
}
|
|
|
|
nr = ph->env.nr_sibling_threads;
|
|
str = ph->env.sibling_threads;
|
|
|
|
for (i = 0; i < nr; i++) {
|
|
fprintf(fp, "# sibling threads : %s\n", str);
|
|
str += strlen(str) + 1;
|
|
}
|
|
|
|
if (ph->env.nr_sibling_dies) {
|
|
if (ph->env.cpu != NULL) {
|
|
for (i = 0; i < cpu_nr; i++)
|
|
fprintf(fp, "# CPU %d: Core ID %d, "
|
|
"Die ID %d, Socket ID %d\n",
|
|
i, ph->env.cpu[i].core_id,
|
|
ph->env.cpu[i].die_id,
|
|
ph->env.cpu[i].socket_id);
|
|
} else
|
|
fprintf(fp, "# Core ID, Die ID and Socket ID "
|
|
"information is not available\n");
|
|
} else {
|
|
if (ph->env.cpu != NULL) {
|
|
for (i = 0; i < cpu_nr; i++)
|
|
fprintf(fp, "# CPU %d: Core ID %d, "
|
|
"Socket ID %d\n",
|
|
i, ph->env.cpu[i].core_id,
|
|
ph->env.cpu[i].socket_id);
|
|
} else
|
|
fprintf(fp, "# Core ID and Socket ID "
|
|
"information is not available\n");
|
|
}
|
|
}
|
|
|
|
static void print_clockid(struct feat_fd *ff, FILE *fp)
|
|
{
|
|
fprintf(fp, "# clockid frequency: %"PRIu64" MHz\n",
|
|
ff->ph->env.clock.clockid_res_ns * 1000);
|
|
}
|
|
|
|
static void print_clock_data(struct feat_fd *ff, FILE *fp)
|
|
{
|
|
struct timespec clockid_ns;
|
|
char tstr[64], date[64];
|
|
struct timeval tod_ns;
|
|
clockid_t clockid;
|
|
struct tm ltime;
|
|
u64 ref;
|
|
|
|
if (!ff->ph->env.clock.enabled) {
|
|
fprintf(fp, "# reference time disabled\n");
|
|
return;
|
|
}
|
|
|
|
/* Compute TOD time. */
|
|
ref = ff->ph->env.clock.tod_ns;
|
|
tod_ns.tv_sec = ref / NSEC_PER_SEC;
|
|
ref -= tod_ns.tv_sec * NSEC_PER_SEC;
|
|
tod_ns.tv_usec = ref / NSEC_PER_USEC;
|
|
|
|
/* Compute clockid time. */
|
|
ref = ff->ph->env.clock.clockid_ns;
|
|
clockid_ns.tv_sec = ref / NSEC_PER_SEC;
|
|
ref -= clockid_ns.tv_sec * NSEC_PER_SEC;
|
|
clockid_ns.tv_nsec = ref;
|
|
|
|
clockid = ff->ph->env.clock.clockid;
|
|
|
|
if (localtime_r(&tod_ns.tv_sec, <ime) == NULL)
|
|
snprintf(tstr, sizeof(tstr), "<error>");
|
|
else {
|
|
strftime(date, sizeof(date), "%F %T", <ime);
|
|
scnprintf(tstr, sizeof(tstr), "%s.%06d",
|
|
date, (int) tod_ns.tv_usec);
|
|
}
|
|
|
|
fprintf(fp, "# clockid: %s (%u)\n", clockid_name(clockid), clockid);
|
|
fprintf(fp, "# reference time: %s = %ld.%06d (TOD) = %ld.%09ld (%s)\n",
|
|
tstr, (long) tod_ns.tv_sec, (int) tod_ns.tv_usec,
|
|
(long) clockid_ns.tv_sec, clockid_ns.tv_nsec,
|
|
clockid_name(clockid));
|
|
}
|
|
|
|
static void print_hybrid_topology(struct feat_fd *ff, FILE *fp)
|
|
{
|
|
int i;
|
|
struct hybrid_node *n;
|
|
|
|
fprintf(fp, "# hybrid cpu system:\n");
|
|
for (i = 0; i < ff->ph->env.nr_hybrid_nodes; i++) {
|
|
n = &ff->ph->env.hybrid_nodes[i];
|
|
fprintf(fp, "# %s cpu list : %s\n", n->pmu_name, n->cpus);
|
|
}
|
|
}
|
|
|
|
static void print_dir_format(struct feat_fd *ff, FILE *fp)
|
|
{
|
|
struct perf_session *session;
|
|
struct perf_data *data;
|
|
|
|
session = container_of(ff->ph, struct perf_session, header);
|
|
data = session->data;
|
|
|
|
fprintf(fp, "# directory data version : %"PRIu64"\n", data->dir.version);
|
|
}
|
|
|
|
#ifdef HAVE_LIBBPF_SUPPORT
|
|
static void print_bpf_prog_info(struct feat_fd *ff, FILE *fp)
|
|
{
|
|
struct perf_env *env = &ff->ph->env;
|
|
struct rb_root *root;
|
|
struct rb_node *next;
|
|
|
|
down_read(&env->bpf_progs.lock);
|
|
|
|
root = &env->bpf_progs.infos;
|
|
next = rb_first(root);
|
|
|
|
while (next) {
|
|
struct bpf_prog_info_node *node;
|
|
|
|
node = rb_entry(next, struct bpf_prog_info_node, rb_node);
|
|
next = rb_next(&node->rb_node);
|
|
|
|
__bpf_event__print_bpf_prog_info(&node->info_linear->info,
|
|
env, fp);
|
|
}
|
|
|
|
up_read(&env->bpf_progs.lock);
|
|
}
|
|
|
|
static void print_bpf_btf(struct feat_fd *ff, FILE *fp)
|
|
{
|
|
struct perf_env *env = &ff->ph->env;
|
|
struct rb_root *root;
|
|
struct rb_node *next;
|
|
|
|
down_read(&env->bpf_progs.lock);
|
|
|
|
root = &env->bpf_progs.btfs;
|
|
next = rb_first(root);
|
|
|
|
while (next) {
|
|
struct btf_node *node;
|
|
|
|
node = rb_entry(next, struct btf_node, rb_node);
|
|
next = rb_next(&node->rb_node);
|
|
fprintf(fp, "# btf info of id %u\n", node->id);
|
|
}
|
|
|
|
up_read(&env->bpf_progs.lock);
|
|
}
|
|
#endif // HAVE_LIBBPF_SUPPORT
|
|
|
|
static void free_event_desc(struct evsel *events)
|
|
{
|
|
struct evsel *evsel;
|
|
|
|
if (!events)
|
|
return;
|
|
|
|
for (evsel = events; evsel->core.attr.size; evsel++) {
|
|
zfree(&evsel->name);
|
|
zfree(&evsel->core.id);
|
|
}
|
|
|
|
free(events);
|
|
}
|
|
|
|
static bool perf_attr_check(struct perf_event_attr *attr)
|
|
{
|
|
if (attr->__reserved_1 || attr->__reserved_2 || attr->__reserved_3) {
|
|
pr_warning("Reserved bits are set unexpectedly. "
|
|
"Please update perf tool.\n");
|
|
return false;
|
|
}
|
|
|
|
if (attr->sample_type & ~(PERF_SAMPLE_MAX-1)) {
|
|
pr_warning("Unknown sample type (0x%llx) is detected. "
|
|
"Please update perf tool.\n",
|
|
attr->sample_type);
|
|
return false;
|
|
}
|
|
|
|
if (attr->read_format & ~(PERF_FORMAT_MAX-1)) {
|
|
pr_warning("Unknown read format (0x%llx) is detected. "
|
|
"Please update perf tool.\n",
|
|
attr->read_format);
|
|
return false;
|
|
}
|
|
|
|
if ((attr->sample_type & PERF_SAMPLE_BRANCH_STACK) &&
|
|
(attr->branch_sample_type & ~(PERF_SAMPLE_BRANCH_MAX-1))) {
|
|
pr_warning("Unknown branch sample type (0x%llx) is detected. "
|
|
"Please update perf tool.\n",
|
|
attr->branch_sample_type);
|
|
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
static struct evsel *read_event_desc(struct feat_fd *ff)
|
|
{
|
|
struct evsel *evsel, *events = NULL;
|
|
u64 *id;
|
|
void *buf = NULL;
|
|
u32 nre, sz, nr, i, j;
|
|
size_t msz;
|
|
|
|
/* number of events */
|
|
if (do_read_u32(ff, &nre))
|
|
goto error;
|
|
|
|
if (do_read_u32(ff, &sz))
|
|
goto error;
|
|
|
|
/* buffer to hold on file attr struct */
|
|
buf = malloc(sz);
|
|
if (!buf)
|
|
goto error;
|
|
|
|
/* the last event terminates with evsel->core.attr.size == 0: */
|
|
events = calloc(nre + 1, sizeof(*events));
|
|
if (!events)
|
|
goto error;
|
|
|
|
msz = sizeof(evsel->core.attr);
|
|
if (sz < msz)
|
|
msz = sz;
|
|
|
|
for (i = 0, evsel = events; i < nre; evsel++, i++) {
|
|
evsel->core.idx = i;
|
|
|
|
/*
|
|
* must read entire on-file attr struct to
|
|
* sync up with layout.
|
|
*/
|
|
if (__do_read(ff, buf, sz))
|
|
goto error;
|
|
|
|
if (ff->ph->needs_swap)
|
|
perf_event__attr_swap(buf);
|
|
|
|
memcpy(&evsel->core.attr, buf, msz);
|
|
|
|
if (!perf_attr_check(&evsel->core.attr))
|
|
goto error;
|
|
|
|
if (do_read_u32(ff, &nr))
|
|
goto error;
|
|
|
|
if (ff->ph->needs_swap)
|
|
evsel->needs_swap = true;
|
|
|
|
evsel->name = do_read_string(ff);
|
|
if (!evsel->name)
|
|
goto error;
|
|
|
|
if (!nr)
|
|
continue;
|
|
|
|
id = calloc(nr, sizeof(*id));
|
|
if (!id)
|
|
goto error;
|
|
evsel->core.ids = nr;
|
|
evsel->core.id = id;
|
|
|
|
for (j = 0 ; j < nr; j++) {
|
|
if (do_read_u64(ff, id))
|
|
goto error;
|
|
id++;
|
|
}
|
|
}
|
|
out:
|
|
free(buf);
|
|
return events;
|
|
error:
|
|
free_event_desc(events);
|
|
events = NULL;
|
|
goto out;
|
|
}
|
|
|
|
static int __desc_attr__fprintf(FILE *fp, const char *name, const char *val,
|
|
void *priv __maybe_unused)
|
|
{
|
|
return fprintf(fp, ", %s = %s", name, val);
|
|
}
|
|
|
|
static void print_event_desc(struct feat_fd *ff, FILE *fp)
|
|
{
|
|
struct evsel *evsel, *events;
|
|
u32 j;
|
|
u64 *id;
|
|
|
|
if (ff->events)
|
|
events = ff->events;
|
|
else
|
|
events = read_event_desc(ff);
|
|
|
|
if (!events) {
|
|
fprintf(fp, "# event desc: not available or unable to read\n");
|
|
return;
|
|
}
|
|
|
|
for (evsel = events; evsel->core.attr.size; evsel++) {
|
|
fprintf(fp, "# event : name = %s, ", evsel->name);
|
|
|
|
if (evsel->core.ids) {
|
|
fprintf(fp, ", id = {");
|
|
for (j = 0, id = evsel->core.id; j < evsel->core.ids; j++, id++) {
|
|
if (j)
|
|
fputc(',', fp);
|
|
fprintf(fp, " %"PRIu64, *id);
|
|
}
|
|
fprintf(fp, " }");
|
|
}
|
|
|
|
perf_event_attr__fprintf(fp, &evsel->core.attr, __desc_attr__fprintf, NULL);
|
|
|
|
fputc('\n', fp);
|
|
}
|
|
|
|
free_event_desc(events);
|
|
ff->events = NULL;
|
|
}
|
|
|
|
static void print_total_mem(struct feat_fd *ff, FILE *fp)
|
|
{
|
|
fprintf(fp, "# total memory : %llu kB\n", ff->ph->env.total_mem);
|
|
}
|
|
|
|
static void print_numa_topology(struct feat_fd *ff, FILE *fp)
|
|
{
|
|
int i;
|
|
struct numa_node *n;
|
|
|
|
for (i = 0; i < ff->ph->env.nr_numa_nodes; i++) {
|
|
n = &ff->ph->env.numa_nodes[i];
|
|
|
|
fprintf(fp, "# node%u meminfo : total = %"PRIu64" kB,"
|
|
" free = %"PRIu64" kB\n",
|
|
n->node, n->mem_total, n->mem_free);
|
|
|
|
fprintf(fp, "# node%u cpu list : ", n->node);
|
|
cpu_map__fprintf(n->map, fp);
|
|
}
|
|
}
|
|
|
|
static void print_cpuid(struct feat_fd *ff, FILE *fp)
|
|
{
|
|
fprintf(fp, "# cpuid : %s\n", ff->ph->env.cpuid);
|
|
}
|
|
|
|
static void print_branch_stack(struct feat_fd *ff __maybe_unused, FILE *fp)
|
|
{
|
|
fprintf(fp, "# contains samples with branch stack\n");
|
|
}
|
|
|
|
static void print_auxtrace(struct feat_fd *ff __maybe_unused, FILE *fp)
|
|
{
|
|
fprintf(fp, "# contains AUX area data (e.g. instruction trace)\n");
|
|
}
|
|
|
|
static void print_stat(struct feat_fd *ff __maybe_unused, FILE *fp)
|
|
{
|
|
fprintf(fp, "# contains stat data\n");
|
|
}
|
|
|
|
static void print_cache(struct feat_fd *ff, FILE *fp __maybe_unused)
|
|
{
|
|
int i;
|
|
|
|
fprintf(fp, "# CPU cache info:\n");
|
|
for (i = 0; i < ff->ph->env.caches_cnt; i++) {
|
|
fprintf(fp, "# ");
|
|
cpu_cache_level__fprintf(fp, &ff->ph->env.caches[i]);
|
|
}
|
|
}
|
|
|
|
static void print_compressed(struct feat_fd *ff, FILE *fp)
|
|
{
|
|
fprintf(fp, "# compressed : %s, level = %d, ratio = %d\n",
|
|
ff->ph->env.comp_type == PERF_COMP_ZSTD ? "Zstd" : "Unknown",
|
|
ff->ph->env.comp_level, ff->ph->env.comp_ratio);
|
|
}
|
|
|
|
static void __print_pmu_caps(FILE *fp, int nr_caps, char **caps, char *pmu_name)
|
|
{
|
|
const char *delimiter = "";
|
|
int i;
|
|
|
|
if (!nr_caps) {
|
|
fprintf(fp, "# %s pmu capabilities: not available\n", pmu_name);
|
|
return;
|
|
}
|
|
|
|
fprintf(fp, "# %s pmu capabilities: ", pmu_name);
|
|
for (i = 0; i < nr_caps; i++) {
|
|
fprintf(fp, "%s%s", delimiter, caps[i]);
|
|
delimiter = ", ";
|
|
}
|
|
|
|
fprintf(fp, "\n");
|
|
}
|
|
|
|
static void print_cpu_pmu_caps(struct feat_fd *ff, FILE *fp)
|
|
{
|
|
__print_pmu_caps(fp, ff->ph->env.nr_cpu_pmu_caps,
|
|
ff->ph->env.cpu_pmu_caps, (char *)"cpu");
|
|
}
|
|
|
|
static void print_pmu_caps(struct feat_fd *ff, FILE *fp)
|
|
{
|
|
struct pmu_caps *pmu_caps;
|
|
|
|
for (int i = 0; i < ff->ph->env.nr_pmus_with_caps; i++) {
|
|
pmu_caps = &ff->ph->env.pmu_caps[i];
|
|
__print_pmu_caps(fp, pmu_caps->nr_caps, pmu_caps->caps,
|
|
pmu_caps->pmu_name);
|
|
}
|
|
|
|
if (strcmp(perf_env__arch(&ff->ph->env), "x86") == 0 &&
|
|
perf_env__has_pmu_mapping(&ff->ph->env, "ibs_op")) {
|
|
char *max_precise = perf_env__find_pmu_cap(&ff->ph->env, "cpu", "max_precise");
|
|
|
|
if (max_precise != NULL && atoi(max_precise) == 0)
|
|
fprintf(fp, "# AMD systems uses ibs_op// PMU for some precise events, e.g.: cycles:p, see the 'perf list' man page for further details.\n");
|
|
}
|
|
}
|
|
|
|
static void print_pmu_mappings(struct feat_fd *ff, FILE *fp)
|
|
{
|
|
const char *delimiter = "# pmu mappings: ";
|
|
char *str, *tmp;
|
|
u32 pmu_num;
|
|
u32 type;
|
|
|
|
pmu_num = ff->ph->env.nr_pmu_mappings;
|
|
if (!pmu_num) {
|
|
fprintf(fp, "# pmu mappings: not available\n");
|
|
return;
|
|
}
|
|
|
|
str = ff->ph->env.pmu_mappings;
|
|
|
|
while (pmu_num) {
|
|
type = strtoul(str, &tmp, 0);
|
|
if (*tmp != ':')
|
|
goto error;
|
|
|
|
str = tmp + 1;
|
|
fprintf(fp, "%s%s = %" PRIu32, delimiter, str, type);
|
|
|
|
delimiter = ", ";
|
|
str += strlen(str) + 1;
|
|
pmu_num--;
|
|
}
|
|
|
|
fprintf(fp, "\n");
|
|
|
|
if (!pmu_num)
|
|
return;
|
|
error:
|
|
fprintf(fp, "# pmu mappings: unable to read\n");
|
|
}
|
|
|
|
static void print_group_desc(struct feat_fd *ff, FILE *fp)
|
|
{
|
|
struct perf_session *session;
|
|
struct evsel *evsel;
|
|
u32 nr = 0;
|
|
|
|
session = container_of(ff->ph, struct perf_session, header);
|
|
|
|
evlist__for_each_entry(session->evlist, evsel) {
|
|
if (evsel__is_group_leader(evsel) && evsel->core.nr_members > 1) {
|
|
fprintf(fp, "# group: %s{%s", evsel->group_name ?: "", evsel__name(evsel));
|
|
|
|
nr = evsel->core.nr_members - 1;
|
|
} else if (nr) {
|
|
fprintf(fp, ",%s", evsel__name(evsel));
|
|
|
|
if (--nr == 0)
|
|
fprintf(fp, "}\n");
|
|
}
|
|
}
|
|
}
|
|
|
|
static void print_sample_time(struct feat_fd *ff, FILE *fp)
|
|
{
|
|
struct perf_session *session;
|
|
char time_buf[32];
|
|
double d;
|
|
|
|
session = container_of(ff->ph, struct perf_session, header);
|
|
|
|
timestamp__scnprintf_usec(session->evlist->first_sample_time,
|
|
time_buf, sizeof(time_buf));
|
|
fprintf(fp, "# time of first sample : %s\n", time_buf);
|
|
|
|
timestamp__scnprintf_usec(session->evlist->last_sample_time,
|
|
time_buf, sizeof(time_buf));
|
|
fprintf(fp, "# time of last sample : %s\n", time_buf);
|
|
|
|
d = (double)(session->evlist->last_sample_time -
|
|
session->evlist->first_sample_time) / NSEC_PER_MSEC;
|
|
|
|
fprintf(fp, "# sample duration : %10.3f ms\n", d);
|
|
}
|
|
|
|
static void memory_node__fprintf(struct memory_node *n,
|
|
unsigned long long bsize, FILE *fp)
|
|
{
|
|
char buf_map[100], buf_size[50];
|
|
unsigned long long size;
|
|
|
|
size = bsize * bitmap_weight(n->set, n->size);
|
|
unit_number__scnprintf(buf_size, 50, size);
|
|
|
|
bitmap_scnprintf(n->set, n->size, buf_map, 100);
|
|
fprintf(fp, "# %3" PRIu64 " [%s]: %s\n", n->node, buf_size, buf_map);
|
|
}
|
|
|
|
static void print_mem_topology(struct feat_fd *ff, FILE *fp)
|
|
{
|
|
struct memory_node *nodes;
|
|
int i, nr;
|
|
|
|
nodes = ff->ph->env.memory_nodes;
|
|
nr = ff->ph->env.nr_memory_nodes;
|
|
|
|
fprintf(fp, "# memory nodes (nr %d, block size 0x%llx):\n",
|
|
nr, ff->ph->env.memory_bsize);
|
|
|
|
for (i = 0; i < nr; i++) {
|
|
memory_node__fprintf(&nodes[i], ff->ph->env.memory_bsize, fp);
|
|
}
|
|
}
|
|
|
|
static int __event_process_build_id(struct perf_record_header_build_id *bev,
|
|
char *filename,
|
|
struct perf_session *session)
|
|
{
|
|
int err = -1;
|
|
struct machine *machine;
|
|
u16 cpumode;
|
|
struct dso *dso;
|
|
enum dso_space_type dso_space;
|
|
|
|
machine = perf_session__findnew_machine(session, bev->pid);
|
|
if (!machine)
|
|
goto out;
|
|
|
|
cpumode = bev->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
|
|
|
|
switch (cpumode) {
|
|
case PERF_RECORD_MISC_KERNEL:
|
|
dso_space = DSO_SPACE__KERNEL;
|
|
break;
|
|
case PERF_RECORD_MISC_GUEST_KERNEL:
|
|
dso_space = DSO_SPACE__KERNEL_GUEST;
|
|
break;
|
|
case PERF_RECORD_MISC_USER:
|
|
case PERF_RECORD_MISC_GUEST_USER:
|
|
dso_space = DSO_SPACE__USER;
|
|
break;
|
|
default:
|
|
goto out;
|
|
}
|
|
|
|
dso = machine__findnew_dso(machine, filename);
|
|
if (dso != NULL) {
|
|
char sbuild_id[SBUILD_ID_SIZE];
|
|
struct build_id bid;
|
|
size_t size = BUILD_ID_SIZE;
|
|
|
|
if (bev->header.misc & PERF_RECORD_MISC_BUILD_ID_SIZE)
|
|
size = bev->size;
|
|
|
|
build_id__init(&bid, bev->data, size);
|
|
dso__set_build_id(dso, &bid);
|
|
dso__set_header_build_id(dso, true);
|
|
|
|
if (dso_space != DSO_SPACE__USER) {
|
|
struct kmod_path m = { .name = NULL, };
|
|
|
|
if (!kmod_path__parse_name(&m, filename) && m.kmod)
|
|
dso__set_module_info(dso, &m, machine);
|
|
|
|
dso__set_kernel(dso, dso_space);
|
|
free(m.name);
|
|
}
|
|
|
|
build_id__sprintf(dso__bid(dso), sbuild_id);
|
|
pr_debug("build id event received for %s: %s [%zu]\n",
|
|
dso__long_name(dso), sbuild_id, size);
|
|
dso__put(dso);
|
|
}
|
|
|
|
err = 0;
|
|
out:
|
|
return err;
|
|
}
|
|
|
|
static int perf_header__read_build_ids_abi_quirk(struct perf_header *header,
|
|
int input, u64 offset, u64 size)
|
|
{
|
|
struct perf_session *session = container_of(header, struct perf_session, header);
|
|
struct {
|
|
struct perf_event_header header;
|
|
u8 build_id[PERF_ALIGN(BUILD_ID_SIZE, sizeof(u64))];
|
|
char filename[0];
|
|
} old_bev;
|
|
struct perf_record_header_build_id bev;
|
|
char filename[PATH_MAX];
|
|
u64 limit = offset + size;
|
|
|
|
while (offset < limit) {
|
|
ssize_t len;
|
|
|
|
if (readn(input, &old_bev, sizeof(old_bev)) != sizeof(old_bev))
|
|
return -1;
|
|
|
|
if (header->needs_swap)
|
|
perf_event_header__bswap(&old_bev.header);
|
|
|
|
len = old_bev.header.size - sizeof(old_bev);
|
|
if (readn(input, filename, len) != len)
|
|
return -1;
|
|
|
|
bev.header = old_bev.header;
|
|
|
|
/*
|
|
* As the pid is the missing value, we need to fill
|
|
* it properly. The header.misc value give us nice hint.
|
|
*/
|
|
bev.pid = HOST_KERNEL_ID;
|
|
if (bev.header.misc == PERF_RECORD_MISC_GUEST_USER ||
|
|
bev.header.misc == PERF_RECORD_MISC_GUEST_KERNEL)
|
|
bev.pid = DEFAULT_GUEST_KERNEL_ID;
|
|
|
|
memcpy(bev.build_id, old_bev.build_id, sizeof(bev.build_id));
|
|
__event_process_build_id(&bev, filename, session);
|
|
|
|
offset += bev.header.size;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int perf_header__read_build_ids(struct perf_header *header,
|
|
int input, u64 offset, u64 size)
|
|
{
|
|
struct perf_session *session = container_of(header, struct perf_session, header);
|
|
struct perf_record_header_build_id bev;
|
|
char filename[PATH_MAX];
|
|
u64 limit = offset + size, orig_offset = offset;
|
|
int err = -1;
|
|
|
|
while (offset < limit) {
|
|
ssize_t len;
|
|
|
|
if (readn(input, &bev, sizeof(bev)) != sizeof(bev))
|
|
goto out;
|
|
|
|
if (header->needs_swap)
|
|
perf_event_header__bswap(&bev.header);
|
|
|
|
len = bev.header.size - sizeof(bev);
|
|
if (readn(input, filename, len) != len)
|
|
goto out;
|
|
/*
|
|
* The a1645ce1 changeset:
|
|
*
|
|
* "perf: 'perf kvm' tool for monitoring guest performance from host"
|
|
*
|
|
* Added a field to struct perf_record_header_build_id that broke the file
|
|
* format.
|
|
*
|
|
* Since the kernel build-id is the first entry, process the
|
|
* table using the old format if the well known
|
|
* '[kernel.kallsyms]' string for the kernel build-id has the
|
|
* first 4 characters chopped off (where the pid_t sits).
|
|
*/
|
|
if (memcmp(filename, "nel.kallsyms]", 13) == 0) {
|
|
if (lseek(input, orig_offset, SEEK_SET) == (off_t)-1)
|
|
return -1;
|
|
return perf_header__read_build_ids_abi_quirk(header, input, offset, size);
|
|
}
|
|
|
|
__event_process_build_id(&bev, filename, session);
|
|
|
|
offset += bev.header.size;
|
|
}
|
|
err = 0;
|
|
out:
|
|
return err;
|
|
}
|
|
|
|
/* Macro for features that simply need to read and store a string. */
|
|
#define FEAT_PROCESS_STR_FUN(__feat, __feat_env) \
|
|
static int process_##__feat(struct feat_fd *ff, void *data __maybe_unused) \
|
|
{\
|
|
free(ff->ph->env.__feat_env); \
|
|
ff->ph->env.__feat_env = do_read_string(ff); \
|
|
return ff->ph->env.__feat_env ? 0 : -ENOMEM; \
|
|
}
|
|
|
|
FEAT_PROCESS_STR_FUN(hostname, hostname);
|
|
FEAT_PROCESS_STR_FUN(osrelease, os_release);
|
|
FEAT_PROCESS_STR_FUN(version, version);
|
|
FEAT_PROCESS_STR_FUN(arch, arch);
|
|
FEAT_PROCESS_STR_FUN(cpudesc, cpu_desc);
|
|
FEAT_PROCESS_STR_FUN(cpuid, cpuid);
|
|
|
|
#ifdef HAVE_LIBTRACEEVENT
|
|
static int process_tracing_data(struct feat_fd *ff, void *data)
|
|
{
|
|
ssize_t ret = trace_report(ff->fd, data, false);
|
|
|
|
return ret < 0 ? -1 : 0;
|
|
}
|
|
#endif
|
|
|
|
static int process_build_id(struct feat_fd *ff, void *data __maybe_unused)
|
|
{
|
|
if (perf_header__read_build_ids(ff->ph, ff->fd, ff->offset, ff->size))
|
|
pr_debug("Failed to read buildids, continuing...\n");
|
|
return 0;
|
|
}
|
|
|
|
static int process_nrcpus(struct feat_fd *ff, void *data __maybe_unused)
|
|
{
|
|
int ret;
|
|
u32 nr_cpus_avail, nr_cpus_online;
|
|
|
|
ret = do_read_u32(ff, &nr_cpus_avail);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = do_read_u32(ff, &nr_cpus_online);
|
|
if (ret)
|
|
return ret;
|
|
ff->ph->env.nr_cpus_avail = (int)nr_cpus_avail;
|
|
ff->ph->env.nr_cpus_online = (int)nr_cpus_online;
|
|
return 0;
|
|
}
|
|
|
|
static int process_total_mem(struct feat_fd *ff, void *data __maybe_unused)
|
|
{
|
|
u64 total_mem;
|
|
int ret;
|
|
|
|
ret = do_read_u64(ff, &total_mem);
|
|
if (ret)
|
|
return -1;
|
|
ff->ph->env.total_mem = (unsigned long long)total_mem;
|
|
return 0;
|
|
}
|
|
|
|
static struct evsel *evlist__find_by_index(struct evlist *evlist, int idx)
|
|
{
|
|
struct evsel *evsel;
|
|
|
|
evlist__for_each_entry(evlist, evsel) {
|
|
if (evsel->core.idx == idx)
|
|
return evsel;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static void evlist__set_event_name(struct evlist *evlist, struct evsel *event)
|
|
{
|
|
struct evsel *evsel;
|
|
|
|
if (!event->name)
|
|
return;
|
|
|
|
evsel = evlist__find_by_index(evlist, event->core.idx);
|
|
if (!evsel)
|
|
return;
|
|
|
|
if (evsel->name)
|
|
return;
|
|
|
|
evsel->name = strdup(event->name);
|
|
}
|
|
|
|
static int
|
|
process_event_desc(struct feat_fd *ff, void *data __maybe_unused)
|
|
{
|
|
struct perf_session *session;
|
|
struct evsel *evsel, *events = read_event_desc(ff);
|
|
|
|
if (!events)
|
|
return 0;
|
|
|
|
session = container_of(ff->ph, struct perf_session, header);
|
|
|
|
if (session->data->is_pipe) {
|
|
/* Save events for reading later by print_event_desc,
|
|
* since they can't be read again in pipe mode. */
|
|
ff->events = events;
|
|
}
|
|
|
|
for (evsel = events; evsel->core.attr.size; evsel++)
|
|
evlist__set_event_name(session->evlist, evsel);
|
|
|
|
if (!session->data->is_pipe)
|
|
free_event_desc(events);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int process_cmdline(struct feat_fd *ff, void *data __maybe_unused)
|
|
{
|
|
char *str, *cmdline = NULL, **argv = NULL;
|
|
u32 nr, i, len = 0;
|
|
|
|
if (do_read_u32(ff, &nr))
|
|
return -1;
|
|
|
|
ff->ph->env.nr_cmdline = nr;
|
|
|
|
cmdline = zalloc(ff->size + nr + 1);
|
|
if (!cmdline)
|
|
return -1;
|
|
|
|
argv = zalloc(sizeof(char *) * (nr + 1));
|
|
if (!argv)
|
|
goto error;
|
|
|
|
for (i = 0; i < nr; i++) {
|
|
str = do_read_string(ff);
|
|
if (!str)
|
|
goto error;
|
|
|
|
argv[i] = cmdline + len;
|
|
memcpy(argv[i], str, strlen(str) + 1);
|
|
len += strlen(str) + 1;
|
|
free(str);
|
|
}
|
|
ff->ph->env.cmdline = cmdline;
|
|
ff->ph->env.cmdline_argv = (const char **) argv;
|
|
return 0;
|
|
|
|
error:
|
|
free(argv);
|
|
free(cmdline);
|
|
return -1;
|
|
}
|
|
|
|
static int process_cpu_topology(struct feat_fd *ff, void *data __maybe_unused)
|
|
{
|
|
u32 nr, i;
|
|
char *str = NULL;
|
|
struct strbuf sb;
|
|
int cpu_nr = ff->ph->env.nr_cpus_avail;
|
|
u64 size = 0;
|
|
struct perf_header *ph = ff->ph;
|
|
bool do_core_id_test = true;
|
|
|
|
ph->env.cpu = calloc(cpu_nr, sizeof(*ph->env.cpu));
|
|
if (!ph->env.cpu)
|
|
return -1;
|
|
|
|
if (do_read_u32(ff, &nr))
|
|
goto free_cpu;
|
|
|
|
ph->env.nr_sibling_cores = nr;
|
|
size += sizeof(u32);
|
|
if (strbuf_init(&sb, 128) < 0)
|
|
goto free_cpu;
|
|
|
|
for (i = 0; i < nr; i++) {
|
|
str = do_read_string(ff);
|
|
if (!str)
|
|
goto error;
|
|
|
|
/* include a NULL character at the end */
|
|
if (strbuf_add(&sb, str, strlen(str) + 1) < 0)
|
|
goto error;
|
|
size += string_size(str);
|
|
zfree(&str);
|
|
}
|
|
ph->env.sibling_cores = strbuf_detach(&sb, NULL);
|
|
|
|
if (do_read_u32(ff, &nr))
|
|
return -1;
|
|
|
|
ph->env.nr_sibling_threads = nr;
|
|
size += sizeof(u32);
|
|
|
|
for (i = 0; i < nr; i++) {
|
|
str = do_read_string(ff);
|
|
if (!str)
|
|
goto error;
|
|
|
|
/* include a NULL character at the end */
|
|
if (strbuf_add(&sb, str, strlen(str) + 1) < 0)
|
|
goto error;
|
|
size += string_size(str);
|
|
zfree(&str);
|
|
}
|
|
ph->env.sibling_threads = strbuf_detach(&sb, NULL);
|
|
|
|
/*
|
|
* The header may be from old perf,
|
|
* which doesn't include core id and socket id information.
|
|
*/
|
|
if (ff->size <= size) {
|
|
zfree(&ph->env.cpu);
|
|
return 0;
|
|
}
|
|
|
|
/* On s390 the socket_id number is not related to the numbers of cpus.
|
|
* The socket_id number might be higher than the numbers of cpus.
|
|
* This depends on the configuration.
|
|
* AArch64 is the same.
|
|
*/
|
|
if (ph->env.arch && (!strncmp(ph->env.arch, "s390", 4)
|
|
|| !strncmp(ph->env.arch, "aarch64", 7)))
|
|
do_core_id_test = false;
|
|
|
|
for (i = 0; i < (u32)cpu_nr; i++) {
|
|
if (do_read_u32(ff, &nr))
|
|
goto free_cpu;
|
|
|
|
ph->env.cpu[i].core_id = nr;
|
|
size += sizeof(u32);
|
|
|
|
if (do_read_u32(ff, &nr))
|
|
goto free_cpu;
|
|
|
|
if (do_core_id_test && nr != (u32)-1 && nr > (u32)cpu_nr) {
|
|
pr_debug("socket_id number is too big."
|
|
"You may need to upgrade the perf tool.\n");
|
|
goto free_cpu;
|
|
}
|
|
|
|
ph->env.cpu[i].socket_id = nr;
|
|
size += sizeof(u32);
|
|
}
|
|
|
|
/*
|
|
* The header may be from old perf,
|
|
* which doesn't include die information.
|
|
*/
|
|
if (ff->size <= size)
|
|
return 0;
|
|
|
|
if (do_read_u32(ff, &nr))
|
|
return -1;
|
|
|
|
ph->env.nr_sibling_dies = nr;
|
|
size += sizeof(u32);
|
|
|
|
for (i = 0; i < nr; i++) {
|
|
str = do_read_string(ff);
|
|
if (!str)
|
|
goto error;
|
|
|
|
/* include a NULL character at the end */
|
|
if (strbuf_add(&sb, str, strlen(str) + 1) < 0)
|
|
goto error;
|
|
size += string_size(str);
|
|
zfree(&str);
|
|
}
|
|
ph->env.sibling_dies = strbuf_detach(&sb, NULL);
|
|
|
|
for (i = 0; i < (u32)cpu_nr; i++) {
|
|
if (do_read_u32(ff, &nr))
|
|
goto free_cpu;
|
|
|
|
ph->env.cpu[i].die_id = nr;
|
|
}
|
|
|
|
return 0;
|
|
|
|
error:
|
|
strbuf_release(&sb);
|
|
zfree(&str);
|
|
free_cpu:
|
|
zfree(&ph->env.cpu);
|
|
return -1;
|
|
}
|
|
|
|
static int process_numa_topology(struct feat_fd *ff, void *data __maybe_unused)
|
|
{
|
|
struct numa_node *nodes, *n;
|
|
u32 nr, i;
|
|
char *str;
|
|
|
|
/* nr nodes */
|
|
if (do_read_u32(ff, &nr))
|
|
return -1;
|
|
|
|
nodes = zalloc(sizeof(*nodes) * nr);
|
|
if (!nodes)
|
|
return -ENOMEM;
|
|
|
|
for (i = 0; i < nr; i++) {
|
|
n = &nodes[i];
|
|
|
|
/* node number */
|
|
if (do_read_u32(ff, &n->node))
|
|
goto error;
|
|
|
|
if (do_read_u64(ff, &n->mem_total))
|
|
goto error;
|
|
|
|
if (do_read_u64(ff, &n->mem_free))
|
|
goto error;
|
|
|
|
str = do_read_string(ff);
|
|
if (!str)
|
|
goto error;
|
|
|
|
n->map = perf_cpu_map__new(str);
|
|
free(str);
|
|
if (!n->map)
|
|
goto error;
|
|
}
|
|
ff->ph->env.nr_numa_nodes = nr;
|
|
ff->ph->env.numa_nodes = nodes;
|
|
return 0;
|
|
|
|
error:
|
|
free(nodes);
|
|
return -1;
|
|
}
|
|
|
|
static int process_pmu_mappings(struct feat_fd *ff, void *data __maybe_unused)
|
|
{
|
|
char *name;
|
|
u32 pmu_num;
|
|
u32 type;
|
|
struct strbuf sb;
|
|
|
|
if (do_read_u32(ff, &pmu_num))
|
|
return -1;
|
|
|
|
if (!pmu_num) {
|
|
pr_debug("pmu mappings not available\n");
|
|
return 0;
|
|
}
|
|
|
|
ff->ph->env.nr_pmu_mappings = pmu_num;
|
|
if (strbuf_init(&sb, 128) < 0)
|
|
return -1;
|
|
|
|
while (pmu_num) {
|
|
if (do_read_u32(ff, &type))
|
|
goto error;
|
|
|
|
name = do_read_string(ff);
|
|
if (!name)
|
|
goto error;
|
|
|
|
if (strbuf_addf(&sb, "%u:%s", type, name) < 0)
|
|
goto error;
|
|
/* include a NULL character at the end */
|
|
if (strbuf_add(&sb, "", 1) < 0)
|
|
goto error;
|
|
|
|
if (!strcmp(name, "msr"))
|
|
ff->ph->env.msr_pmu_type = type;
|
|
|
|
free(name);
|
|
pmu_num--;
|
|
}
|
|
ff->ph->env.pmu_mappings = strbuf_detach(&sb, NULL);
|
|
return 0;
|
|
|
|
error:
|
|
strbuf_release(&sb);
|
|
return -1;
|
|
}
|
|
|
|
static int process_group_desc(struct feat_fd *ff, void *data __maybe_unused)
|
|
{
|
|
size_t ret = -1;
|
|
u32 i, nr, nr_groups;
|
|
struct perf_session *session;
|
|
struct evsel *evsel, *leader = NULL;
|
|
struct group_desc {
|
|
char *name;
|
|
u32 leader_idx;
|
|
u32 nr_members;
|
|
} *desc;
|
|
|
|
if (do_read_u32(ff, &nr_groups))
|
|
return -1;
|
|
|
|
ff->ph->env.nr_groups = nr_groups;
|
|
if (!nr_groups) {
|
|
pr_debug("group desc not available\n");
|
|
return 0;
|
|
}
|
|
|
|
desc = calloc(nr_groups, sizeof(*desc));
|
|
if (!desc)
|
|
return -1;
|
|
|
|
for (i = 0; i < nr_groups; i++) {
|
|
desc[i].name = do_read_string(ff);
|
|
if (!desc[i].name)
|
|
goto out_free;
|
|
|
|
if (do_read_u32(ff, &desc[i].leader_idx))
|
|
goto out_free;
|
|
|
|
if (do_read_u32(ff, &desc[i].nr_members))
|
|
goto out_free;
|
|
}
|
|
|
|
/*
|
|
* Rebuild group relationship based on the group_desc
|
|
*/
|
|
session = container_of(ff->ph, struct perf_session, header);
|
|
|
|
i = nr = 0;
|
|
evlist__for_each_entry(session->evlist, evsel) {
|
|
if (i < nr_groups && evsel->core.idx == (int) desc[i].leader_idx) {
|
|
evsel__set_leader(evsel, evsel);
|
|
/* {anon_group} is a dummy name */
|
|
if (strcmp(desc[i].name, "{anon_group}")) {
|
|
evsel->group_name = desc[i].name;
|
|
desc[i].name = NULL;
|
|
}
|
|
evsel->core.nr_members = desc[i].nr_members;
|
|
|
|
if (i >= nr_groups || nr > 0) {
|
|
pr_debug("invalid group desc\n");
|
|
goto out_free;
|
|
}
|
|
|
|
leader = evsel;
|
|
nr = evsel->core.nr_members - 1;
|
|
i++;
|
|
} else if (nr) {
|
|
/* This is a group member */
|
|
evsel__set_leader(evsel, leader);
|
|
|
|
nr--;
|
|
}
|
|
}
|
|
|
|
if (i != nr_groups || nr != 0) {
|
|
pr_debug("invalid group desc\n");
|
|
goto out_free;
|
|
}
|
|
|
|
ret = 0;
|
|
out_free:
|
|
for (i = 0; i < nr_groups; i++)
|
|
zfree(&desc[i].name);
|
|
free(desc);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int process_auxtrace(struct feat_fd *ff, void *data __maybe_unused)
|
|
{
|
|
struct perf_session *session;
|
|
int err;
|
|
|
|
session = container_of(ff->ph, struct perf_session, header);
|
|
|
|
err = auxtrace_index__process(ff->fd, ff->size, session,
|
|
ff->ph->needs_swap);
|
|
if (err < 0)
|
|
pr_err("Failed to process auxtrace index\n");
|
|
return err;
|
|
}
|
|
|
|
static int process_cache(struct feat_fd *ff, void *data __maybe_unused)
|
|
{
|
|
struct cpu_cache_level *caches;
|
|
u32 cnt, i, version;
|
|
|
|
if (do_read_u32(ff, &version))
|
|
return -1;
|
|
|
|
if (version != 1)
|
|
return -1;
|
|
|
|
if (do_read_u32(ff, &cnt))
|
|
return -1;
|
|
|
|
caches = zalloc(sizeof(*caches) * cnt);
|
|
if (!caches)
|
|
return -1;
|
|
|
|
for (i = 0; i < cnt; i++) {
|
|
struct cpu_cache_level *c = &caches[i];
|
|
|
|
#define _R(v) \
|
|
if (do_read_u32(ff, &c->v)) \
|
|
goto out_free_caches; \
|
|
|
|
_R(level)
|
|
_R(line_size)
|
|
_R(sets)
|
|
_R(ways)
|
|
#undef _R
|
|
|
|
#define _R(v) \
|
|
c->v = do_read_string(ff); \
|
|
if (!c->v) \
|
|
goto out_free_caches; \
|
|
|
|
_R(type)
|
|
_R(size)
|
|
_R(map)
|
|
#undef _R
|
|
}
|
|
|
|
ff->ph->env.caches = caches;
|
|
ff->ph->env.caches_cnt = cnt;
|
|
return 0;
|
|
out_free_caches:
|
|
for (i = 0; i < cnt; i++) {
|
|
free(caches[i].type);
|
|
free(caches[i].size);
|
|
free(caches[i].map);
|
|
}
|
|
free(caches);
|
|
return -1;
|
|
}
|
|
|
|
static int process_sample_time(struct feat_fd *ff, void *data __maybe_unused)
|
|
{
|
|
struct perf_session *session;
|
|
u64 first_sample_time, last_sample_time;
|
|
int ret;
|
|
|
|
session = container_of(ff->ph, struct perf_session, header);
|
|
|
|
ret = do_read_u64(ff, &first_sample_time);
|
|
if (ret)
|
|
return -1;
|
|
|
|
ret = do_read_u64(ff, &last_sample_time);
|
|
if (ret)
|
|
return -1;
|
|
|
|
session->evlist->first_sample_time = first_sample_time;
|
|
session->evlist->last_sample_time = last_sample_time;
|
|
return 0;
|
|
}
|
|
|
|
static int process_mem_topology(struct feat_fd *ff,
|
|
void *data __maybe_unused)
|
|
{
|
|
struct memory_node *nodes;
|
|
u64 version, i, nr, bsize;
|
|
int ret = -1;
|
|
|
|
if (do_read_u64(ff, &version))
|
|
return -1;
|
|
|
|
if (version != 1)
|
|
return -1;
|
|
|
|
if (do_read_u64(ff, &bsize))
|
|
return -1;
|
|
|
|
if (do_read_u64(ff, &nr))
|
|
return -1;
|
|
|
|
nodes = zalloc(sizeof(*nodes) * nr);
|
|
if (!nodes)
|
|
return -1;
|
|
|
|
for (i = 0; i < nr; i++) {
|
|
struct memory_node n;
|
|
|
|
#define _R(v) \
|
|
if (do_read_u64(ff, &n.v)) \
|
|
goto out; \
|
|
|
|
_R(node)
|
|
_R(size)
|
|
|
|
#undef _R
|
|
|
|
if (do_read_bitmap(ff, &n.set, &n.size))
|
|
goto out;
|
|
|
|
nodes[i] = n;
|
|
}
|
|
|
|
ff->ph->env.memory_bsize = bsize;
|
|
ff->ph->env.memory_nodes = nodes;
|
|
ff->ph->env.nr_memory_nodes = nr;
|
|
ret = 0;
|
|
|
|
out:
|
|
if (ret)
|
|
free(nodes);
|
|
return ret;
|
|
}
|
|
|
|
static int process_clockid(struct feat_fd *ff,
|
|
void *data __maybe_unused)
|
|
{
|
|
if (do_read_u64(ff, &ff->ph->env.clock.clockid_res_ns))
|
|
return -1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int process_clock_data(struct feat_fd *ff,
|
|
void *_data __maybe_unused)
|
|
{
|
|
u32 data32;
|
|
u64 data64;
|
|
|
|
/* version */
|
|
if (do_read_u32(ff, &data32))
|
|
return -1;
|
|
|
|
if (data32 != 1)
|
|
return -1;
|
|
|
|
/* clockid */
|
|
if (do_read_u32(ff, &data32))
|
|
return -1;
|
|
|
|
ff->ph->env.clock.clockid = data32;
|
|
|
|
/* TOD ref time */
|
|
if (do_read_u64(ff, &data64))
|
|
return -1;
|
|
|
|
ff->ph->env.clock.tod_ns = data64;
|
|
|
|
/* clockid ref time */
|
|
if (do_read_u64(ff, &data64))
|
|
return -1;
|
|
|
|
ff->ph->env.clock.clockid_ns = data64;
|
|
ff->ph->env.clock.enabled = true;
|
|
return 0;
|
|
}
|
|
|
|
static int process_hybrid_topology(struct feat_fd *ff,
|
|
void *data __maybe_unused)
|
|
{
|
|
struct hybrid_node *nodes, *n;
|
|
u32 nr, i;
|
|
|
|
/* nr nodes */
|
|
if (do_read_u32(ff, &nr))
|
|
return -1;
|
|
|
|
nodes = zalloc(sizeof(*nodes) * nr);
|
|
if (!nodes)
|
|
return -ENOMEM;
|
|
|
|
for (i = 0; i < nr; i++) {
|
|
n = &nodes[i];
|
|
|
|
n->pmu_name = do_read_string(ff);
|
|
if (!n->pmu_name)
|
|
goto error;
|
|
|
|
n->cpus = do_read_string(ff);
|
|
if (!n->cpus)
|
|
goto error;
|
|
}
|
|
|
|
ff->ph->env.nr_hybrid_nodes = nr;
|
|
ff->ph->env.hybrid_nodes = nodes;
|
|
return 0;
|
|
|
|
error:
|
|
for (i = 0; i < nr; i++) {
|
|
free(nodes[i].pmu_name);
|
|
free(nodes[i].cpus);
|
|
}
|
|
|
|
free(nodes);
|
|
return -1;
|
|
}
|
|
|
|
static int process_dir_format(struct feat_fd *ff,
|
|
void *_data __maybe_unused)
|
|
{
|
|
struct perf_session *session;
|
|
struct perf_data *data;
|
|
|
|
session = container_of(ff->ph, struct perf_session, header);
|
|
data = session->data;
|
|
|
|
if (WARN_ON(!perf_data__is_dir(data)))
|
|
return -1;
|
|
|
|
return do_read_u64(ff, &data->dir.version);
|
|
}
|
|
|
|
#ifdef HAVE_LIBBPF_SUPPORT
|
|
static int process_bpf_prog_info(struct feat_fd *ff, void *data __maybe_unused)
|
|
{
|
|
struct bpf_prog_info_node *info_node;
|
|
struct perf_env *env = &ff->ph->env;
|
|
struct perf_bpil *info_linear;
|
|
u32 count, i;
|
|
int err = -1;
|
|
|
|
if (ff->ph->needs_swap) {
|
|
pr_warning("interpreting bpf_prog_info from systems with endianness is not yet supported\n");
|
|
return 0;
|
|
}
|
|
|
|
if (do_read_u32(ff, &count))
|
|
return -1;
|
|
|
|
down_write(&env->bpf_progs.lock);
|
|
|
|
for (i = 0; i < count; ++i) {
|
|
u32 info_len, data_len;
|
|
|
|
info_linear = NULL;
|
|
info_node = NULL;
|
|
if (do_read_u32(ff, &info_len))
|
|
goto out;
|
|
if (do_read_u32(ff, &data_len))
|
|
goto out;
|
|
|
|
if (info_len > sizeof(struct bpf_prog_info)) {
|
|
pr_warning("detected invalid bpf_prog_info\n");
|
|
goto out;
|
|
}
|
|
|
|
info_linear = malloc(sizeof(struct perf_bpil) +
|
|
data_len);
|
|
if (!info_linear)
|
|
goto out;
|
|
info_linear->info_len = sizeof(struct bpf_prog_info);
|
|
info_linear->data_len = data_len;
|
|
if (do_read_u64(ff, (u64 *)(&info_linear->arrays)))
|
|
goto out;
|
|
if (__do_read(ff, &info_linear->info, info_len))
|
|
goto out;
|
|
if (info_len < sizeof(struct bpf_prog_info))
|
|
memset(((void *)(&info_linear->info)) + info_len, 0,
|
|
sizeof(struct bpf_prog_info) - info_len);
|
|
|
|
if (__do_read(ff, info_linear->data, data_len))
|
|
goto out;
|
|
|
|
info_node = malloc(sizeof(struct bpf_prog_info_node));
|
|
if (!info_node)
|
|
goto out;
|
|
|
|
/* after reading from file, translate offset to address */
|
|
bpil_offs_to_addr(info_linear);
|
|
info_node->info_linear = info_linear;
|
|
__perf_env__insert_bpf_prog_info(env, info_node);
|
|
}
|
|
|
|
up_write(&env->bpf_progs.lock);
|
|
return 0;
|
|
out:
|
|
free(info_linear);
|
|
free(info_node);
|
|
up_write(&env->bpf_progs.lock);
|
|
return err;
|
|
}
|
|
|
|
static int process_bpf_btf(struct feat_fd *ff, void *data __maybe_unused)
|
|
{
|
|
struct perf_env *env = &ff->ph->env;
|
|
struct btf_node *node = NULL;
|
|
u32 count, i;
|
|
int err = -1;
|
|
|
|
if (ff->ph->needs_swap) {
|
|
pr_warning("interpreting btf from systems with endianness is not yet supported\n");
|
|
return 0;
|
|
}
|
|
|
|
if (do_read_u32(ff, &count))
|
|
return -1;
|
|
|
|
down_write(&env->bpf_progs.lock);
|
|
|
|
for (i = 0; i < count; ++i) {
|
|
u32 id, data_size;
|
|
|
|
if (do_read_u32(ff, &id))
|
|
goto out;
|
|
if (do_read_u32(ff, &data_size))
|
|
goto out;
|
|
|
|
node = malloc(sizeof(struct btf_node) + data_size);
|
|
if (!node)
|
|
goto out;
|
|
|
|
node->id = id;
|
|
node->data_size = data_size;
|
|
|
|
if (__do_read(ff, node->data, data_size))
|
|
goto out;
|
|
|
|
__perf_env__insert_btf(env, node);
|
|
node = NULL;
|
|
}
|
|
|
|
err = 0;
|
|
out:
|
|
up_write(&env->bpf_progs.lock);
|
|
free(node);
|
|
return err;
|
|
}
|
|
#endif // HAVE_LIBBPF_SUPPORT
|
|
|
|
static int process_compressed(struct feat_fd *ff,
|
|
void *data __maybe_unused)
|
|
{
|
|
if (do_read_u32(ff, &(ff->ph->env.comp_ver)))
|
|
return -1;
|
|
|
|
if (do_read_u32(ff, &(ff->ph->env.comp_type)))
|
|
return -1;
|
|
|
|
if (do_read_u32(ff, &(ff->ph->env.comp_level)))
|
|
return -1;
|
|
|
|
if (do_read_u32(ff, &(ff->ph->env.comp_ratio)))
|
|
return -1;
|
|
|
|
if (do_read_u32(ff, &(ff->ph->env.comp_mmap_len)))
|
|
return -1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int __process_pmu_caps(struct feat_fd *ff, int *nr_caps,
|
|
char ***caps, unsigned int *max_branches,
|
|
unsigned int *br_cntr_nr,
|
|
unsigned int *br_cntr_width)
|
|
{
|
|
char *name, *value, *ptr;
|
|
u32 nr_pmu_caps, i;
|
|
|
|
*nr_caps = 0;
|
|
*caps = NULL;
|
|
|
|
if (do_read_u32(ff, &nr_pmu_caps))
|
|
return -1;
|
|
|
|
if (!nr_pmu_caps)
|
|
return 0;
|
|
|
|
*caps = zalloc(sizeof(char *) * nr_pmu_caps);
|
|
if (!*caps)
|
|
return -1;
|
|
|
|
for (i = 0; i < nr_pmu_caps; i++) {
|
|
name = do_read_string(ff);
|
|
if (!name)
|
|
goto error;
|
|
|
|
value = do_read_string(ff);
|
|
if (!value)
|
|
goto free_name;
|
|
|
|
if (asprintf(&ptr, "%s=%s", name, value) < 0)
|
|
goto free_value;
|
|
|
|
(*caps)[i] = ptr;
|
|
|
|
if (!strcmp(name, "branches"))
|
|
*max_branches = atoi(value);
|
|
|
|
if (!strcmp(name, "branch_counter_nr"))
|
|
*br_cntr_nr = atoi(value);
|
|
|
|
if (!strcmp(name, "branch_counter_width"))
|
|
*br_cntr_width = atoi(value);
|
|
|
|
free(value);
|
|
free(name);
|
|
}
|
|
*nr_caps = nr_pmu_caps;
|
|
return 0;
|
|
|
|
free_value:
|
|
free(value);
|
|
free_name:
|
|
free(name);
|
|
error:
|
|
for (; i > 0; i--)
|
|
free((*caps)[i - 1]);
|
|
free(*caps);
|
|
*caps = NULL;
|
|
*nr_caps = 0;
|
|
return -1;
|
|
}
|
|
|
|
static int process_cpu_pmu_caps(struct feat_fd *ff,
|
|
void *data __maybe_unused)
|
|
{
|
|
int ret = __process_pmu_caps(ff, &ff->ph->env.nr_cpu_pmu_caps,
|
|
&ff->ph->env.cpu_pmu_caps,
|
|
&ff->ph->env.max_branches,
|
|
&ff->ph->env.br_cntr_nr,
|
|
&ff->ph->env.br_cntr_width);
|
|
|
|
if (!ret && !ff->ph->env.cpu_pmu_caps)
|
|
pr_debug("cpu pmu capabilities not available\n");
|
|
return ret;
|
|
}
|
|
|
|
static int process_pmu_caps(struct feat_fd *ff, void *data __maybe_unused)
|
|
{
|
|
struct pmu_caps *pmu_caps;
|
|
u32 nr_pmu, i;
|
|
int ret;
|
|
int j;
|
|
|
|
if (do_read_u32(ff, &nr_pmu))
|
|
return -1;
|
|
|
|
if (!nr_pmu) {
|
|
pr_debug("pmu capabilities not available\n");
|
|
return 0;
|
|
}
|
|
|
|
pmu_caps = zalloc(sizeof(*pmu_caps) * nr_pmu);
|
|
if (!pmu_caps)
|
|
return -ENOMEM;
|
|
|
|
for (i = 0; i < nr_pmu; i++) {
|
|
ret = __process_pmu_caps(ff, &pmu_caps[i].nr_caps,
|
|
&pmu_caps[i].caps,
|
|
&pmu_caps[i].max_branches,
|
|
&pmu_caps[i].br_cntr_nr,
|
|
&pmu_caps[i].br_cntr_width);
|
|
if (ret)
|
|
goto err;
|
|
|
|
pmu_caps[i].pmu_name = do_read_string(ff);
|
|
if (!pmu_caps[i].pmu_name) {
|
|
ret = -1;
|
|
goto err;
|
|
}
|
|
if (!pmu_caps[i].nr_caps) {
|
|
pr_debug("%s pmu capabilities not available\n",
|
|
pmu_caps[i].pmu_name);
|
|
}
|
|
}
|
|
|
|
ff->ph->env.nr_pmus_with_caps = nr_pmu;
|
|
ff->ph->env.pmu_caps = pmu_caps;
|
|
return 0;
|
|
|
|
err:
|
|
for (i = 0; i < nr_pmu; i++) {
|
|
for (j = 0; j < pmu_caps[i].nr_caps; j++)
|
|
free(pmu_caps[i].caps[j]);
|
|
free(pmu_caps[i].caps);
|
|
free(pmu_caps[i].pmu_name);
|
|
}
|
|
|
|
free(pmu_caps);
|
|
return ret;
|
|
}
|
|
|
|
#define FEAT_OPR(n, func, __full_only) \
|
|
[HEADER_##n] = { \
|
|
.name = __stringify(n), \
|
|
.write = write_##func, \
|
|
.print = print_##func, \
|
|
.full_only = __full_only, \
|
|
.process = process_##func, \
|
|
.synthesize = true \
|
|
}
|
|
|
|
#define FEAT_OPN(n, func, __full_only) \
|
|
[HEADER_##n] = { \
|
|
.name = __stringify(n), \
|
|
.write = write_##func, \
|
|
.print = print_##func, \
|
|
.full_only = __full_only, \
|
|
.process = process_##func \
|
|
}
|
|
|
|
/* feature_ops not implemented: */
|
|
#define print_tracing_data NULL
|
|
#define print_build_id NULL
|
|
|
|
#define process_branch_stack NULL
|
|
#define process_stat NULL
|
|
|
|
// Only used in util/synthetic-events.c
|
|
const struct perf_header_feature_ops feat_ops[HEADER_LAST_FEATURE];
|
|
|
|
const struct perf_header_feature_ops feat_ops[HEADER_LAST_FEATURE] = {
|
|
#ifdef HAVE_LIBTRACEEVENT
|
|
FEAT_OPN(TRACING_DATA, tracing_data, false),
|
|
#endif
|
|
FEAT_OPN(BUILD_ID, build_id, false),
|
|
FEAT_OPR(HOSTNAME, hostname, false),
|
|
FEAT_OPR(OSRELEASE, osrelease, false),
|
|
FEAT_OPR(VERSION, version, false),
|
|
FEAT_OPR(ARCH, arch, false),
|
|
FEAT_OPR(NRCPUS, nrcpus, false),
|
|
FEAT_OPR(CPUDESC, cpudesc, false),
|
|
FEAT_OPR(CPUID, cpuid, false),
|
|
FEAT_OPR(TOTAL_MEM, total_mem, false),
|
|
FEAT_OPR(EVENT_DESC, event_desc, false),
|
|
FEAT_OPR(CMDLINE, cmdline, false),
|
|
FEAT_OPR(CPU_TOPOLOGY, cpu_topology, true),
|
|
FEAT_OPR(NUMA_TOPOLOGY, numa_topology, true),
|
|
FEAT_OPN(BRANCH_STACK, branch_stack, false),
|
|
FEAT_OPR(PMU_MAPPINGS, pmu_mappings, false),
|
|
FEAT_OPR(GROUP_DESC, group_desc, false),
|
|
FEAT_OPN(AUXTRACE, auxtrace, false),
|
|
FEAT_OPN(STAT, stat, false),
|
|
FEAT_OPN(CACHE, cache, true),
|
|
FEAT_OPR(SAMPLE_TIME, sample_time, false),
|
|
FEAT_OPR(MEM_TOPOLOGY, mem_topology, true),
|
|
FEAT_OPR(CLOCKID, clockid, false),
|
|
FEAT_OPN(DIR_FORMAT, dir_format, false),
|
|
#ifdef HAVE_LIBBPF_SUPPORT
|
|
FEAT_OPR(BPF_PROG_INFO, bpf_prog_info, false),
|
|
FEAT_OPR(BPF_BTF, bpf_btf, false),
|
|
#endif
|
|
FEAT_OPR(COMPRESSED, compressed, false),
|
|
FEAT_OPR(CPU_PMU_CAPS, cpu_pmu_caps, false),
|
|
FEAT_OPR(CLOCK_DATA, clock_data, false),
|
|
FEAT_OPN(HYBRID_TOPOLOGY, hybrid_topology, true),
|
|
FEAT_OPR(PMU_CAPS, pmu_caps, false),
|
|
};
|
|
|
|
struct header_print_data {
|
|
FILE *fp;
|
|
bool full; /* extended list of headers */
|
|
};
|
|
|
|
static int perf_file_section__fprintf_info(struct perf_file_section *section,
|
|
struct perf_header *ph,
|
|
int feat, int fd, void *data)
|
|
{
|
|
struct header_print_data *hd = data;
|
|
struct feat_fd ff;
|
|
|
|
if (lseek(fd, section->offset, SEEK_SET) == (off_t)-1) {
|
|
pr_debug("Failed to lseek to %" PRIu64 " offset for feature "
|
|
"%d, continuing...\n", section->offset, feat);
|
|
return 0;
|
|
}
|
|
if (feat >= HEADER_LAST_FEATURE) {
|
|
pr_warning("unknown feature %d\n", feat);
|
|
return 0;
|
|
}
|
|
if (!feat_ops[feat].print)
|
|
return 0;
|
|
|
|
ff = (struct feat_fd) {
|
|
.fd = fd,
|
|
.ph = ph,
|
|
};
|
|
|
|
if (!feat_ops[feat].full_only || hd->full)
|
|
feat_ops[feat].print(&ff, hd->fp);
|
|
else
|
|
fprintf(hd->fp, "# %s info available, use -I to display\n",
|
|
feat_ops[feat].name);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int perf_header__fprintf_info(struct perf_session *session, FILE *fp, bool full)
|
|
{
|
|
struct header_print_data hd;
|
|
struct perf_header *header = &session->header;
|
|
int fd = perf_data__fd(session->data);
|
|
struct stat st;
|
|
time_t stctime;
|
|
int ret, bit;
|
|
|
|
hd.fp = fp;
|
|
hd.full = full;
|
|
|
|
ret = fstat(fd, &st);
|
|
if (ret == -1)
|
|
return -1;
|
|
|
|
stctime = st.st_mtime;
|
|
fprintf(fp, "# captured on : %s", ctime(&stctime));
|
|
|
|
fprintf(fp, "# header version : %u\n", header->version);
|
|
fprintf(fp, "# data offset : %" PRIu64 "\n", header->data_offset);
|
|
fprintf(fp, "# data size : %" PRIu64 "\n", header->data_size);
|
|
fprintf(fp, "# feat offset : %" PRIu64 "\n", header->feat_offset);
|
|
|
|
perf_header__process_sections(header, fd, &hd,
|
|
perf_file_section__fprintf_info);
|
|
|
|
if (session->data->is_pipe)
|
|
return 0;
|
|
|
|
fprintf(fp, "# missing features: ");
|
|
for_each_clear_bit(bit, header->adds_features, HEADER_LAST_FEATURE) {
|
|
if (bit)
|
|
fprintf(fp, "%s ", feat_ops[bit].name);
|
|
}
|
|
|
|
fprintf(fp, "\n");
|
|
return 0;
|
|
}
|
|
|
|
struct header_fw {
|
|
struct feat_writer fw;
|
|
struct feat_fd *ff;
|
|
};
|
|
|
|
static int feat_writer_cb(struct feat_writer *fw, void *buf, size_t sz)
|
|
{
|
|
struct header_fw *h = container_of(fw, struct header_fw, fw);
|
|
|
|
return do_write(h->ff, buf, sz);
|
|
}
|
|
|
|
static int do_write_feat(struct feat_fd *ff, int type,
|
|
struct perf_file_section **p,
|
|
struct evlist *evlist,
|
|
struct feat_copier *fc)
|
|
{
|
|
int err;
|
|
int ret = 0;
|
|
|
|
if (perf_header__has_feat(ff->ph, type)) {
|
|
if (!feat_ops[type].write)
|
|
return -1;
|
|
|
|
if (WARN(ff->buf, "Error: calling %s in pipe-mode.\n", __func__))
|
|
return -1;
|
|
|
|
(*p)->offset = lseek(ff->fd, 0, SEEK_CUR);
|
|
|
|
/*
|
|
* Hook to let perf inject copy features sections from the input
|
|
* file.
|
|
*/
|
|
if (fc && fc->copy) {
|
|
struct header_fw h = {
|
|
.fw.write = feat_writer_cb,
|
|
.ff = ff,
|
|
};
|
|
|
|
/* ->copy() returns 0 if the feature was not copied */
|
|
err = fc->copy(fc, type, &h.fw);
|
|
} else {
|
|
err = 0;
|
|
}
|
|
if (!err)
|
|
err = feat_ops[type].write(ff, evlist);
|
|
if (err < 0) {
|
|
pr_debug("failed to write feature %s\n", feat_ops[type].name);
|
|
|
|
/* undo anything written */
|
|
lseek(ff->fd, (*p)->offset, SEEK_SET);
|
|
|
|
return -1;
|
|
}
|
|
(*p)->size = lseek(ff->fd, 0, SEEK_CUR) - (*p)->offset;
|
|
(*p)++;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static int perf_header__adds_write(struct perf_header *header,
|
|
struct evlist *evlist, int fd,
|
|
struct feat_copier *fc)
|
|
{
|
|
int nr_sections;
|
|
struct feat_fd ff = {
|
|
.fd = fd,
|
|
.ph = header,
|
|
};
|
|
struct perf_file_section *feat_sec, *p;
|
|
int sec_size;
|
|
u64 sec_start;
|
|
int feat;
|
|
int err;
|
|
|
|
nr_sections = bitmap_weight(header->adds_features, HEADER_FEAT_BITS);
|
|
if (!nr_sections)
|
|
return 0;
|
|
|
|
feat_sec = p = calloc(nr_sections, sizeof(*feat_sec));
|
|
if (feat_sec == NULL)
|
|
return -ENOMEM;
|
|
|
|
sec_size = sizeof(*feat_sec) * nr_sections;
|
|
|
|
sec_start = header->feat_offset;
|
|
lseek(fd, sec_start + sec_size, SEEK_SET);
|
|
|
|
for_each_set_bit(feat, header->adds_features, HEADER_FEAT_BITS) {
|
|
if (do_write_feat(&ff, feat, &p, evlist, fc))
|
|
perf_header__clear_feat(header, feat);
|
|
}
|
|
|
|
lseek(fd, sec_start, SEEK_SET);
|
|
/*
|
|
* may write more than needed due to dropped feature, but
|
|
* this is okay, reader will skip the missing entries
|
|
*/
|
|
err = do_write(&ff, feat_sec, sec_size);
|
|
if (err < 0)
|
|
pr_debug("failed to write feature section\n");
|
|
free(ff.buf); /* TODO: added to silence clang-tidy. */
|
|
free(feat_sec);
|
|
return err;
|
|
}
|
|
|
|
int perf_header__write_pipe(int fd)
|
|
{
|
|
struct perf_pipe_file_header f_header;
|
|
struct feat_fd ff = {
|
|
.fd = fd,
|
|
};
|
|
int err;
|
|
|
|
f_header = (struct perf_pipe_file_header){
|
|
.magic = PERF_MAGIC,
|
|
.size = sizeof(f_header),
|
|
};
|
|
|
|
err = do_write(&ff, &f_header, sizeof(f_header));
|
|
if (err < 0) {
|
|
pr_debug("failed to write perf pipe header\n");
|
|
return err;
|
|
}
|
|
free(ff.buf);
|
|
return 0;
|
|
}
|
|
|
|
static int perf_session__do_write_header(struct perf_session *session,
|
|
struct evlist *evlist,
|
|
int fd, bool at_exit,
|
|
struct feat_copier *fc,
|
|
bool write_attrs_after_data)
|
|
{
|
|
struct perf_file_header f_header;
|
|
struct perf_header *header = &session->header;
|
|
struct evsel *evsel;
|
|
struct feat_fd ff = {
|
|
.fd = fd,
|
|
};
|
|
u64 attr_offset = sizeof(f_header), attr_size = 0;
|
|
int err;
|
|
|
|
if (write_attrs_after_data && at_exit) {
|
|
/*
|
|
* Write features at the end of the file first so that
|
|
* attributes may come after them.
|
|
*/
|
|
if (!header->data_offset && header->data_size) {
|
|
pr_err("File contains data but offset unknown\n");
|
|
err = -1;
|
|
goto err_out;
|
|
}
|
|
header->feat_offset = header->data_offset + header->data_size;
|
|
err = perf_header__adds_write(header, evlist, fd, fc);
|
|
if (err < 0)
|
|
goto err_out;
|
|
attr_offset = lseek(fd, 0, SEEK_CUR);
|
|
} else {
|
|
lseek(fd, attr_offset, SEEK_SET);
|
|
}
|
|
|
|
evlist__for_each_entry(session->evlist, evsel) {
|
|
evsel->id_offset = attr_offset;
|
|
/* Avoid writing at the end of the file until the session is exiting. */
|
|
if (!write_attrs_after_data || at_exit) {
|
|
err = do_write(&ff, evsel->core.id, evsel->core.ids * sizeof(u64));
|
|
if (err < 0) {
|
|
pr_debug("failed to write perf header\n");
|
|
goto err_out;
|
|
}
|
|
}
|
|
attr_offset += evsel->core.ids * sizeof(u64);
|
|
}
|
|
|
|
evlist__for_each_entry(evlist, evsel) {
|
|
if (evsel->core.attr.size < sizeof(evsel->core.attr)) {
|
|
/*
|
|
* We are likely in "perf inject" and have read
|
|
* from an older file. Update attr size so that
|
|
* reader gets the right offset to the ids.
|
|
*/
|
|
evsel->core.attr.size = sizeof(evsel->core.attr);
|
|
}
|
|
/* Avoid writing at the end of the file until the session is exiting. */
|
|
if (!write_attrs_after_data || at_exit) {
|
|
struct perf_file_attr f_attr = {
|
|
.attr = evsel->core.attr,
|
|
.ids = {
|
|
.offset = evsel->id_offset,
|
|
.size = evsel->core.ids * sizeof(u64),
|
|
}
|
|
};
|
|
err = do_write(&ff, &f_attr, sizeof(f_attr));
|
|
if (err < 0) {
|
|
pr_debug("failed to write perf header attribute\n");
|
|
goto err_out;
|
|
}
|
|
}
|
|
attr_size += sizeof(struct perf_file_attr);
|
|
}
|
|
|
|
if (!header->data_offset) {
|
|
if (write_attrs_after_data)
|
|
header->data_offset = sizeof(f_header);
|
|
else
|
|
header->data_offset = attr_offset + attr_size;
|
|
}
|
|
header->feat_offset = header->data_offset + header->data_size;
|
|
|
|
if (!write_attrs_after_data && at_exit) {
|
|
/* Write features now feat_offset is known. */
|
|
err = perf_header__adds_write(header, evlist, fd, fc);
|
|
if (err < 0)
|
|
goto err_out;
|
|
}
|
|
|
|
f_header = (struct perf_file_header){
|
|
.magic = PERF_MAGIC,
|
|
.size = sizeof(f_header),
|
|
.attr_size = sizeof(struct perf_file_attr),
|
|
.attrs = {
|
|
.offset = attr_offset,
|
|
.size = attr_size,
|
|
},
|
|
.data = {
|
|
.offset = header->data_offset,
|
|
.size = header->data_size,
|
|
},
|
|
/* event_types is ignored, store zeros */
|
|
};
|
|
|
|
memcpy(&f_header.adds_features, &header->adds_features, sizeof(header->adds_features));
|
|
|
|
lseek(fd, 0, SEEK_SET);
|
|
err = do_write(&ff, &f_header, sizeof(f_header));
|
|
if (err < 0) {
|
|
pr_debug("failed to write perf header\n");
|
|
goto err_out;
|
|
} else {
|
|
lseek(fd, 0, SEEK_END);
|
|
err = 0;
|
|
}
|
|
err_out:
|
|
free(ff.buf);
|
|
return err;
|
|
}
|
|
|
|
int perf_session__write_header(struct perf_session *session,
|
|
struct evlist *evlist,
|
|
int fd, bool at_exit)
|
|
{
|
|
return perf_session__do_write_header(session, evlist, fd, at_exit, /*fc=*/NULL,
|
|
/*write_attrs_after_data=*/false);
|
|
}
|
|
|
|
size_t perf_session__data_offset(const struct evlist *evlist)
|
|
{
|
|
struct evsel *evsel;
|
|
size_t data_offset;
|
|
|
|
data_offset = sizeof(struct perf_file_header);
|
|
evlist__for_each_entry(evlist, evsel) {
|
|
data_offset += evsel->core.ids * sizeof(u64);
|
|
}
|
|
data_offset += evlist->core.nr_entries * sizeof(struct perf_file_attr);
|
|
|
|
return data_offset;
|
|
}
|
|
|
|
int perf_session__inject_header(struct perf_session *session,
|
|
struct evlist *evlist,
|
|
int fd,
|
|
struct feat_copier *fc,
|
|
bool write_attrs_after_data)
|
|
{
|
|
return perf_session__do_write_header(session, evlist, fd, true, fc,
|
|
write_attrs_after_data);
|
|
}
|
|
|
|
static int perf_header__getbuffer64(struct perf_header *header,
|
|
int fd, void *buf, size_t size)
|
|
{
|
|
if (readn(fd, buf, size) <= 0)
|
|
return -1;
|
|
|
|
if (header->needs_swap)
|
|
mem_bswap_64(buf, size);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int perf_header__process_sections(struct perf_header *header, int fd,
|
|
void *data,
|
|
int (*process)(struct perf_file_section *section,
|
|
struct perf_header *ph,
|
|
int feat, int fd, void *data))
|
|
{
|
|
struct perf_file_section *feat_sec, *sec;
|
|
int nr_sections;
|
|
int sec_size;
|
|
int feat;
|
|
int err;
|
|
|
|
nr_sections = bitmap_weight(header->adds_features, HEADER_FEAT_BITS);
|
|
if (!nr_sections)
|
|
return 0;
|
|
|
|
feat_sec = sec = calloc(nr_sections, sizeof(*feat_sec));
|
|
if (!feat_sec)
|
|
return -1;
|
|
|
|
sec_size = sizeof(*feat_sec) * nr_sections;
|
|
|
|
lseek(fd, header->feat_offset, SEEK_SET);
|
|
|
|
err = perf_header__getbuffer64(header, fd, feat_sec, sec_size);
|
|
if (err < 0)
|
|
goto out_free;
|
|
|
|
for_each_set_bit(feat, header->adds_features, HEADER_LAST_FEATURE) {
|
|
err = process(sec++, header, feat, fd, data);
|
|
if (err < 0)
|
|
goto out_free;
|
|
}
|
|
err = 0;
|
|
out_free:
|
|
free(feat_sec);
|
|
return err;
|
|
}
|
|
|
|
static const int attr_file_abi_sizes[] = {
|
|
[0] = PERF_ATTR_SIZE_VER0,
|
|
[1] = PERF_ATTR_SIZE_VER1,
|
|
[2] = PERF_ATTR_SIZE_VER2,
|
|
[3] = PERF_ATTR_SIZE_VER3,
|
|
[4] = PERF_ATTR_SIZE_VER4,
|
|
0,
|
|
};
|
|
|
|
/*
|
|
* In the legacy file format, the magic number is not used to encode endianness.
|
|
* hdr_sz was used to encode endianness. But given that hdr_sz can vary based
|
|
* on ABI revisions, we need to try all combinations for all endianness to
|
|
* detect the endianness.
|
|
*/
|
|
static int try_all_file_abis(uint64_t hdr_sz, struct perf_header *ph)
|
|
{
|
|
uint64_t ref_size, attr_size;
|
|
int i;
|
|
|
|
for (i = 0 ; attr_file_abi_sizes[i]; i++) {
|
|
ref_size = attr_file_abi_sizes[i]
|
|
+ sizeof(struct perf_file_section);
|
|
if (hdr_sz != ref_size) {
|
|
attr_size = bswap_64(hdr_sz);
|
|
if (attr_size != ref_size)
|
|
continue;
|
|
|
|
ph->needs_swap = true;
|
|
}
|
|
pr_debug("ABI%d perf.data file detected, need_swap=%d\n",
|
|
i,
|
|
ph->needs_swap);
|
|
return 0;
|
|
}
|
|
/* could not determine endianness */
|
|
return -1;
|
|
}
|
|
|
|
#define PERF_PIPE_HDR_VER0 16
|
|
|
|
static const size_t attr_pipe_abi_sizes[] = {
|
|
[0] = PERF_PIPE_HDR_VER0,
|
|
0,
|
|
};
|
|
|
|
/*
|
|
* In the legacy pipe format, there is an implicit assumption that endianness
|
|
* between host recording the samples, and host parsing the samples is the
|
|
* same. This is not always the case given that the pipe output may always be
|
|
* redirected into a file and analyzed on a different machine with possibly a
|
|
* different endianness and perf_event ABI revisions in the perf tool itself.
|
|
*/
|
|
static int try_all_pipe_abis(uint64_t hdr_sz, struct perf_header *ph)
|
|
{
|
|
u64 attr_size;
|
|
int i;
|
|
|
|
for (i = 0 ; attr_pipe_abi_sizes[i]; i++) {
|
|
if (hdr_sz != attr_pipe_abi_sizes[i]) {
|
|
attr_size = bswap_64(hdr_sz);
|
|
if (attr_size != hdr_sz)
|
|
continue;
|
|
|
|
ph->needs_swap = true;
|
|
}
|
|
pr_debug("Pipe ABI%d perf.data file detected\n", i);
|
|
return 0;
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
bool is_perf_magic(u64 magic)
|
|
{
|
|
if (!memcmp(&magic, __perf_magic1, sizeof(magic))
|
|
|| magic == __perf_magic2
|
|
|| magic == __perf_magic2_sw)
|
|
return true;
|
|
|
|
return false;
|
|
}
|
|
|
|
static int check_magic_endian(u64 magic, uint64_t hdr_sz,
|
|
bool is_pipe, struct perf_header *ph)
|
|
{
|
|
int ret;
|
|
|
|
/* check for legacy format */
|
|
ret = memcmp(&magic, __perf_magic1, sizeof(magic));
|
|
if (ret == 0) {
|
|
ph->version = PERF_HEADER_VERSION_1;
|
|
pr_debug("legacy perf.data format\n");
|
|
if (is_pipe)
|
|
return try_all_pipe_abis(hdr_sz, ph);
|
|
|
|
return try_all_file_abis(hdr_sz, ph);
|
|
}
|
|
/*
|
|
* the new magic number serves two purposes:
|
|
* - unique number to identify actual perf.data files
|
|
* - encode endianness of file
|
|
*/
|
|
ph->version = PERF_HEADER_VERSION_2;
|
|
|
|
/* check magic number with one endianness */
|
|
if (magic == __perf_magic2)
|
|
return 0;
|
|
|
|
/* check magic number with opposite endianness */
|
|
if (magic != __perf_magic2_sw)
|
|
return -1;
|
|
|
|
ph->needs_swap = true;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int perf_file_header__read(struct perf_file_header *header,
|
|
struct perf_header *ph, int fd)
|
|
{
|
|
ssize_t ret;
|
|
|
|
lseek(fd, 0, SEEK_SET);
|
|
|
|
ret = readn(fd, header, sizeof(*header));
|
|
if (ret <= 0)
|
|
return -1;
|
|
|
|
if (check_magic_endian(header->magic,
|
|
header->attr_size, false, ph) < 0) {
|
|
pr_debug("magic/endian check failed\n");
|
|
return -1;
|
|
}
|
|
|
|
if (ph->needs_swap) {
|
|
mem_bswap_64(header, offsetof(struct perf_file_header,
|
|
adds_features));
|
|
}
|
|
|
|
if (header->size > header->attrs.offset) {
|
|
pr_err("Perf file header corrupt: header overlaps attrs\n");
|
|
return -1;
|
|
}
|
|
|
|
if (header->size > header->data.offset) {
|
|
pr_err("Perf file header corrupt: header overlaps data\n");
|
|
return -1;
|
|
}
|
|
|
|
if ((header->attrs.offset <= header->data.offset &&
|
|
header->attrs.offset + header->attrs.size > header->data.offset) ||
|
|
(header->attrs.offset > header->data.offset &&
|
|
header->data.offset + header->data.size > header->attrs.offset)) {
|
|
pr_err("Perf file header corrupt: Attributes and data overlap\n");
|
|
return -1;
|
|
}
|
|
|
|
if (header->size != sizeof(*header)) {
|
|
/* Support the previous format */
|
|
if (header->size == offsetof(typeof(*header), adds_features))
|
|
bitmap_zero(header->adds_features, HEADER_FEAT_BITS);
|
|
else
|
|
return -1;
|
|
} else if (ph->needs_swap) {
|
|
/*
|
|
* feature bitmap is declared as an array of unsigned longs --
|
|
* not good since its size can differ between the host that
|
|
* generated the data file and the host analyzing the file.
|
|
*
|
|
* We need to handle endianness, but we don't know the size of
|
|
* the unsigned long where the file was generated. Take a best
|
|
* guess at determining it: try 64-bit swap first (ie., file
|
|
* created on a 64-bit host), and check if the hostname feature
|
|
* bit is set (this feature bit is forced on as of fbe96f2).
|
|
* If the bit is not, undo the 64-bit swap and try a 32-bit
|
|
* swap. If the hostname bit is still not set (e.g., older data
|
|
* file), punt and fallback to the original behavior --
|
|
* clearing all feature bits and setting buildid.
|
|
*/
|
|
mem_bswap_64(&header->adds_features,
|
|
BITS_TO_U64(HEADER_FEAT_BITS));
|
|
|
|
if (!test_bit(HEADER_HOSTNAME, header->adds_features)) {
|
|
/* unswap as u64 */
|
|
mem_bswap_64(&header->adds_features,
|
|
BITS_TO_U64(HEADER_FEAT_BITS));
|
|
|
|
/* unswap as u32 */
|
|
mem_bswap_32(&header->adds_features,
|
|
BITS_TO_U32(HEADER_FEAT_BITS));
|
|
}
|
|
|
|
if (!test_bit(HEADER_HOSTNAME, header->adds_features)) {
|
|
bitmap_zero(header->adds_features, HEADER_FEAT_BITS);
|
|
__set_bit(HEADER_BUILD_ID, header->adds_features);
|
|
}
|
|
}
|
|
|
|
memcpy(&ph->adds_features, &header->adds_features,
|
|
sizeof(ph->adds_features));
|
|
|
|
ph->data_offset = header->data.offset;
|
|
ph->data_size = header->data.size;
|
|
ph->feat_offset = header->data.offset + header->data.size;
|
|
return 0;
|
|
}
|
|
|
|
static int perf_file_section__process(struct perf_file_section *section,
|
|
struct perf_header *ph,
|
|
int feat, int fd, void *data)
|
|
{
|
|
struct feat_fd fdd = {
|
|
.fd = fd,
|
|
.ph = ph,
|
|
.size = section->size,
|
|
.offset = section->offset,
|
|
};
|
|
|
|
if (lseek(fd, section->offset, SEEK_SET) == (off_t)-1) {
|
|
pr_debug("Failed to lseek to %" PRIu64 " offset for feature "
|
|
"%d, continuing...\n", section->offset, feat);
|
|
return 0;
|
|
}
|
|
|
|
if (feat >= HEADER_LAST_FEATURE) {
|
|
pr_debug("unknown feature %d, continuing...\n", feat);
|
|
return 0;
|
|
}
|
|
|
|
if (!feat_ops[feat].process)
|
|
return 0;
|
|
|
|
return feat_ops[feat].process(&fdd, data);
|
|
}
|
|
|
|
static int perf_file_header__read_pipe(struct perf_pipe_file_header *header,
|
|
struct perf_header *ph,
|
|
struct perf_data *data)
|
|
{
|
|
ssize_t ret;
|
|
|
|
ret = perf_data__read(data, header, sizeof(*header));
|
|
if (ret <= 0)
|
|
return -1;
|
|
|
|
if (check_magic_endian(header->magic, header->size, true, ph) < 0) {
|
|
pr_debug("endian/magic failed\n");
|
|
return -1;
|
|
}
|
|
|
|
if (ph->needs_swap)
|
|
header->size = bswap_64(header->size);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int perf_header__read_pipe(struct perf_session *session)
|
|
{
|
|
struct perf_header *header = &session->header;
|
|
struct perf_pipe_file_header f_header;
|
|
|
|
if (perf_file_header__read_pipe(&f_header, header, session->data) < 0) {
|
|
pr_debug("incompatible file format\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
return f_header.size == sizeof(f_header) ? 0 : -1;
|
|
}
|
|
|
|
static int read_attr(int fd, struct perf_header *ph,
|
|
struct perf_file_attr *f_attr)
|
|
{
|
|
struct perf_event_attr *attr = &f_attr->attr;
|
|
size_t sz, left;
|
|
size_t our_sz = sizeof(f_attr->attr);
|
|
ssize_t ret;
|
|
|
|
memset(f_attr, 0, sizeof(*f_attr));
|
|
|
|
/* read minimal guaranteed structure */
|
|
ret = readn(fd, attr, PERF_ATTR_SIZE_VER0);
|
|
if (ret <= 0) {
|
|
pr_debug("cannot read %d bytes of header attr\n",
|
|
PERF_ATTR_SIZE_VER0);
|
|
return -1;
|
|
}
|
|
|
|
/* on file perf_event_attr size */
|
|
sz = attr->size;
|
|
|
|
if (ph->needs_swap)
|
|
sz = bswap_32(sz);
|
|
|
|
if (sz == 0) {
|
|
/* assume ABI0 */
|
|
sz = PERF_ATTR_SIZE_VER0;
|
|
} else if (sz > our_sz) {
|
|
pr_debug("file uses a more recent and unsupported ABI"
|
|
" (%zu bytes extra)\n", sz - our_sz);
|
|
return -1;
|
|
}
|
|
/* what we have not yet read and that we know about */
|
|
left = sz - PERF_ATTR_SIZE_VER0;
|
|
if (left) {
|
|
void *ptr = attr;
|
|
ptr += PERF_ATTR_SIZE_VER0;
|
|
|
|
ret = readn(fd, ptr, left);
|
|
}
|
|
/* read perf_file_section, ids are read in caller */
|
|
ret = readn(fd, &f_attr->ids, sizeof(f_attr->ids));
|
|
|
|
return ret <= 0 ? -1 : 0;
|
|
}
|
|
|
|
#ifdef HAVE_LIBTRACEEVENT
|
|
static int evsel__prepare_tracepoint_event(struct evsel *evsel, struct tep_handle *pevent)
|
|
{
|
|
struct tep_event *event;
|
|
char bf[128];
|
|
|
|
/* already prepared */
|
|
if (evsel->tp_format)
|
|
return 0;
|
|
|
|
if (pevent == NULL) {
|
|
pr_debug("broken or missing trace data\n");
|
|
return -1;
|
|
}
|
|
|
|
event = tep_find_event(pevent, evsel->core.attr.config);
|
|
if (event == NULL) {
|
|
pr_debug("cannot find event format for %d\n", (int)evsel->core.attr.config);
|
|
return -1;
|
|
}
|
|
|
|
if (!evsel->name) {
|
|
snprintf(bf, sizeof(bf), "%s:%s", event->system, event->name);
|
|
evsel->name = strdup(bf);
|
|
if (evsel->name == NULL)
|
|
return -1;
|
|
}
|
|
|
|
evsel->tp_format = event;
|
|
return 0;
|
|
}
|
|
|
|
static int evlist__prepare_tracepoint_events(struct evlist *evlist, struct tep_handle *pevent)
|
|
{
|
|
struct evsel *pos;
|
|
|
|
evlist__for_each_entry(evlist, pos) {
|
|
if (pos->core.attr.type == PERF_TYPE_TRACEPOINT &&
|
|
evsel__prepare_tracepoint_event(pos, pevent))
|
|
return -1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
int perf_session__read_header(struct perf_session *session)
|
|
{
|
|
struct perf_data *data = session->data;
|
|
struct perf_header *header = &session->header;
|
|
struct perf_file_header f_header;
|
|
struct perf_file_attr f_attr;
|
|
u64 f_id;
|
|
int nr_attrs, nr_ids, i, j, err;
|
|
int fd = perf_data__fd(data);
|
|
|
|
session->evlist = evlist__new();
|
|
if (session->evlist == NULL)
|
|
return -ENOMEM;
|
|
|
|
session->evlist->env = &header->env;
|
|
session->machines.host.env = &header->env;
|
|
|
|
/*
|
|
* We can read 'pipe' data event from regular file,
|
|
* check for the pipe header regardless of source.
|
|
*/
|
|
err = perf_header__read_pipe(session);
|
|
if (!err || perf_data__is_pipe(data)) {
|
|
data->is_pipe = true;
|
|
return err;
|
|
}
|
|
|
|
if (perf_file_header__read(&f_header, header, fd) < 0)
|
|
return -EINVAL;
|
|
|
|
if (header->needs_swap && data->in_place_update) {
|
|
pr_err("In-place update not supported when byte-swapping is required\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
/*
|
|
* Sanity check that perf.data was written cleanly; data size is
|
|
* initialized to 0 and updated only if the on_exit function is run.
|
|
* If data size is still 0 then the file contains only partial
|
|
* information. Just warn user and process it as much as it can.
|
|
*/
|
|
if (f_header.data.size == 0) {
|
|
pr_warning("WARNING: The %s file's data size field is 0 which is unexpected.\n"
|
|
"Was the 'perf record' command properly terminated?\n",
|
|
data->file.path);
|
|
}
|
|
|
|
if (f_header.attr_size == 0) {
|
|
pr_err("ERROR: The %s file's attr size field is 0 which is unexpected.\n"
|
|
"Was the 'perf record' command properly terminated?\n",
|
|
data->file.path);
|
|
return -EINVAL;
|
|
}
|
|
|
|
nr_attrs = f_header.attrs.size / f_header.attr_size;
|
|
lseek(fd, f_header.attrs.offset, SEEK_SET);
|
|
|
|
for (i = 0; i < nr_attrs; i++) {
|
|
struct evsel *evsel;
|
|
off_t tmp;
|
|
|
|
if (read_attr(fd, header, &f_attr) < 0)
|
|
goto out_errno;
|
|
|
|
if (header->needs_swap) {
|
|
f_attr.ids.size = bswap_64(f_attr.ids.size);
|
|
f_attr.ids.offset = bswap_64(f_attr.ids.offset);
|
|
perf_event__attr_swap(&f_attr.attr);
|
|
}
|
|
|
|
tmp = lseek(fd, 0, SEEK_CUR);
|
|
evsel = evsel__new(&f_attr.attr);
|
|
|
|
if (evsel == NULL)
|
|
goto out_delete_evlist;
|
|
|
|
evsel->needs_swap = header->needs_swap;
|
|
/*
|
|
* Do it before so that if perf_evsel__alloc_id fails, this
|
|
* entry gets purged too at evlist__delete().
|
|
*/
|
|
evlist__add(session->evlist, evsel);
|
|
|
|
nr_ids = f_attr.ids.size / sizeof(u64);
|
|
/*
|
|
* We don't have the cpu and thread maps on the header, so
|
|
* for allocating the perf_sample_id table we fake 1 cpu and
|
|
* hattr->ids threads.
|
|
*/
|
|
if (perf_evsel__alloc_id(&evsel->core, 1, nr_ids))
|
|
goto out_delete_evlist;
|
|
|
|
lseek(fd, f_attr.ids.offset, SEEK_SET);
|
|
|
|
for (j = 0; j < nr_ids; j++) {
|
|
if (perf_header__getbuffer64(header, fd, &f_id, sizeof(f_id)))
|
|
goto out_errno;
|
|
|
|
perf_evlist__id_add(&session->evlist->core, &evsel->core, 0, j, f_id);
|
|
}
|
|
|
|
lseek(fd, tmp, SEEK_SET);
|
|
}
|
|
|
|
#ifdef HAVE_LIBTRACEEVENT
|
|
perf_header__process_sections(header, fd, &session->tevent,
|
|
perf_file_section__process);
|
|
|
|
if (evlist__prepare_tracepoint_events(session->evlist, session->tevent.pevent))
|
|
goto out_delete_evlist;
|
|
#else
|
|
perf_header__process_sections(header, fd, NULL, perf_file_section__process);
|
|
#endif
|
|
|
|
return 0;
|
|
out_errno:
|
|
return -errno;
|
|
|
|
out_delete_evlist:
|
|
evlist__delete(session->evlist);
|
|
session->evlist = NULL;
|
|
return -ENOMEM;
|
|
}
|
|
|
|
int perf_event__process_feature(struct perf_session *session,
|
|
union perf_event *event)
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|
{
|
|
const struct perf_tool *tool = session->tool;
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struct feat_fd ff = { .fd = 0 };
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struct perf_record_header_feature *fe = (struct perf_record_header_feature *)event;
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int type = fe->header.type;
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u64 feat = fe->feat_id;
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int ret = 0;
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|
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if (type < 0 || type >= PERF_RECORD_HEADER_MAX) {
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pr_warning("invalid record type %d in pipe-mode\n", type);
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return 0;
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}
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if (feat == HEADER_RESERVED || feat >= HEADER_LAST_FEATURE) {
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pr_warning("invalid record type %d in pipe-mode\n", type);
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return -1;
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}
|
|
|
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if (!feat_ops[feat].process)
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return 0;
|
|
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ff.buf = (void *)fe->data;
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ff.size = event->header.size - sizeof(*fe);
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ff.ph = &session->header;
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if (feat_ops[feat].process(&ff, NULL)) {
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ret = -1;
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goto out;
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}
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|
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if (!feat_ops[feat].print || !tool->show_feat_hdr)
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goto out;
|
|
|
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if (!feat_ops[feat].full_only ||
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tool->show_feat_hdr >= SHOW_FEAT_HEADER_FULL_INFO) {
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feat_ops[feat].print(&ff, stdout);
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} else {
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fprintf(stdout, "# %s info available, use -I to display\n",
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feat_ops[feat].name);
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}
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out:
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free_event_desc(ff.events);
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return ret;
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}
|
|
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size_t perf_event__fprintf_event_update(union perf_event *event, FILE *fp)
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{
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struct perf_record_event_update *ev = &event->event_update;
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struct perf_cpu_map *map;
|
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size_t ret;
|
|
|
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ret = fprintf(fp, "\n... id: %" PRI_lu64 "\n", ev->id);
|
|
|
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switch (ev->type) {
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case PERF_EVENT_UPDATE__SCALE:
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ret += fprintf(fp, "... scale: %f\n", ev->scale.scale);
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break;
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case PERF_EVENT_UPDATE__UNIT:
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ret += fprintf(fp, "... unit: %s\n", ev->unit);
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break;
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case PERF_EVENT_UPDATE__NAME:
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ret += fprintf(fp, "... name: %s\n", ev->name);
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break;
|
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case PERF_EVENT_UPDATE__CPUS:
|
|
ret += fprintf(fp, "... ");
|
|
|
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map = cpu_map__new_data(&ev->cpus.cpus);
|
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if (map) {
|
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ret += cpu_map__fprintf(map, fp);
|
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perf_cpu_map__put(map);
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} else
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ret += fprintf(fp, "failed to get cpus\n");
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|
break;
|
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default:
|
|
ret += fprintf(fp, "... unknown type\n");
|
|
break;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
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int perf_event__process_attr(const struct perf_tool *tool __maybe_unused,
|
|
union perf_event *event,
|
|
struct evlist **pevlist)
|
|
{
|
|
u32 i, n_ids;
|
|
u64 *ids;
|
|
struct evsel *evsel;
|
|
struct evlist *evlist = *pevlist;
|
|
|
|
if (evlist == NULL) {
|
|
*pevlist = evlist = evlist__new();
|
|
if (evlist == NULL)
|
|
return -ENOMEM;
|
|
}
|
|
|
|
evsel = evsel__new(&event->attr.attr);
|
|
if (evsel == NULL)
|
|
return -ENOMEM;
|
|
|
|
evlist__add(evlist, evsel);
|
|
|
|
n_ids = event->header.size - sizeof(event->header) - event->attr.attr.size;
|
|
n_ids = n_ids / sizeof(u64);
|
|
/*
|
|
* We don't have the cpu and thread maps on the header, so
|
|
* for allocating the perf_sample_id table we fake 1 cpu and
|
|
* hattr->ids threads.
|
|
*/
|
|
if (perf_evsel__alloc_id(&evsel->core, 1, n_ids))
|
|
return -ENOMEM;
|
|
|
|
ids = perf_record_header_attr_id(event);
|
|
for (i = 0; i < n_ids; i++) {
|
|
perf_evlist__id_add(&evlist->core, &evsel->core, 0, i, ids[i]);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int perf_event__process_event_update(const struct perf_tool *tool __maybe_unused,
|
|
union perf_event *event,
|
|
struct evlist **pevlist)
|
|
{
|
|
struct perf_record_event_update *ev = &event->event_update;
|
|
struct evlist *evlist;
|
|
struct evsel *evsel;
|
|
struct perf_cpu_map *map;
|
|
|
|
if (dump_trace)
|
|
perf_event__fprintf_event_update(event, stdout);
|
|
|
|
if (!pevlist || *pevlist == NULL)
|
|
return -EINVAL;
|
|
|
|
evlist = *pevlist;
|
|
|
|
evsel = evlist__id2evsel(evlist, ev->id);
|
|
if (evsel == NULL)
|
|
return -EINVAL;
|
|
|
|
switch (ev->type) {
|
|
case PERF_EVENT_UPDATE__UNIT:
|
|
free((char *)evsel->unit);
|
|
evsel->unit = strdup(ev->unit);
|
|
break;
|
|
case PERF_EVENT_UPDATE__NAME:
|
|
free(evsel->name);
|
|
evsel->name = strdup(ev->name);
|
|
break;
|
|
case PERF_EVENT_UPDATE__SCALE:
|
|
evsel->scale = ev->scale.scale;
|
|
break;
|
|
case PERF_EVENT_UPDATE__CPUS:
|
|
map = cpu_map__new_data(&ev->cpus.cpus);
|
|
if (map) {
|
|
perf_cpu_map__put(evsel->core.own_cpus);
|
|
evsel->core.own_cpus = map;
|
|
} else
|
|
pr_err("failed to get event_update cpus\n");
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
#ifdef HAVE_LIBTRACEEVENT
|
|
int perf_event__process_tracing_data(struct perf_session *session,
|
|
union perf_event *event)
|
|
{
|
|
ssize_t size_read, padding, size = event->tracing_data.size;
|
|
int fd = perf_data__fd(session->data);
|
|
char buf[BUFSIZ];
|
|
|
|
/*
|
|
* The pipe fd is already in proper place and in any case
|
|
* we can't move it, and we'd screw the case where we read
|
|
* 'pipe' data from regular file. The trace_report reads
|
|
* data from 'fd' so we need to set it directly behind the
|
|
* event, where the tracing data starts.
|
|
*/
|
|
if (!perf_data__is_pipe(session->data)) {
|
|
off_t offset = lseek(fd, 0, SEEK_CUR);
|
|
|
|
/* setup for reading amidst mmap */
|
|
lseek(fd, offset + sizeof(struct perf_record_header_tracing_data),
|
|
SEEK_SET);
|
|
}
|
|
|
|
size_read = trace_report(fd, &session->tevent, session->trace_event_repipe);
|
|
padding = PERF_ALIGN(size_read, sizeof(u64)) - size_read;
|
|
|
|
if (readn(fd, buf, padding) < 0) {
|
|
pr_err("%s: reading input file", __func__);
|
|
return -1;
|
|
}
|
|
if (session->trace_event_repipe) {
|
|
int retw = write(STDOUT_FILENO, buf, padding);
|
|
if (retw <= 0 || retw != padding) {
|
|
pr_err("%s: repiping tracing data padding", __func__);
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
if (size_read + padding != size) {
|
|
pr_err("%s: tracing data size mismatch", __func__);
|
|
return -1;
|
|
}
|
|
|
|
evlist__prepare_tracepoint_events(session->evlist, session->tevent.pevent);
|
|
|
|
return size_read + padding;
|
|
}
|
|
#endif
|
|
|
|
int perf_event__process_build_id(struct perf_session *session,
|
|
union perf_event *event)
|
|
{
|
|
__event_process_build_id(&event->build_id,
|
|
event->build_id.filename,
|
|
session);
|
|
return 0;
|
|
}
|