makedumpfile: Understand >= v3.11-rc4 dmesg.
This is a backport of commit a01b663 ("[PATCH v2] dump-dmesg: Understand >= v3.11-rc4 dmesg."): commit a01b663 Author: Lubomir Rintel <lkundrak@v3.sk> Date: Fri Sep 20 15:56:49 2013 +0900 [PATCH v2] dump-dmesg: Understand >= v3.11-rc4 dmesg. Symbol name changed with the following commit: 62e32ac printk: rename struct log to struct printk_log Changes for v2: * Only back values for symbol names we did actually read; * either "log" or "printk_log" Signed-off-by: Lubomir Rintel <lkundrak@v3.sk> makedumpfile --dump-dmesg is broken since VMCOREINFO symbol "log" has renamed to "printk_log". This patch fixes --dump-dmesg on 3.11 kernel. Signed-off-by: WANG Chao <chaowang@redhat.com> Acked-by: Vivek Goyal <vgoyal@redhat.com>
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kexec-tools-2.0.4-makedumpfile-Understand-v3.11-rc4-dmesg.patch
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197
kexec-tools-2.0.4-makedumpfile-Understand-v3.11-rc4-dmesg.patch
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From a01b663749c4b221ecd03285fa24a4b31e742004 Mon Sep 17 00:00:00 2001
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From: Lubomir Rintel <lkundrak@v3.sk>
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Date: Fri, 20 Sep 2013 15:56:49 +0900
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Subject: [PATCH] [PATCH v2] dump-dmesg: Understand >= v3.11-rc4 dmesg.
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Symbol name changed with the following commit:
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62e32ac printk: rename struct log to struct printk_log
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Changes for v2:
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* Only back values for symbol names we did actually read;
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either "log" or "printk_log"
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Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
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---
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makedumpfile.c | 69 +++++++++++++++++++++++++++++++++++++++++++---------------
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makedumpfile.h | 7 +++---
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2 files changed, 55 insertions(+), 21 deletions(-)
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diff --git a/makedumpfile-1.5.4/makedumpfile.c b/makedumpfile-1.5.4/makedumpfile.c
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index e01ff50..7bbdcc2 100644
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--- a/makedumpfile-1.5.4/makedumpfile.c
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+++ b/makedumpfile-1.5.4/makedumpfile.c
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@@ -1389,10 +1389,23 @@ get_structure_info(void)
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OFFSET_INIT(elf64_phdr.p_paddr, "elf64_phdr", "p_paddr");
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OFFSET_INIT(elf64_phdr.p_memsz, "elf64_phdr", "p_memsz");
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- SIZE_INIT(log, "log");
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- OFFSET_INIT(log.ts_nsec, "log", "ts_nsec");
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- OFFSET_INIT(log.len, "log", "len");
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- OFFSET_INIT(log.text_len, "log", "text_len");
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+ SIZE_INIT(printk_log, "printk_log");
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+ if (SIZE(printk_log) != NOT_FOUND_STRUCTURE) {
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+ /*
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+ * In kernel 3.11-rc4 the log structure name was renamed
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+ * to "printk_log".
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+ */
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+ info->flag_use_printk_log = TRUE;
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+ OFFSET_INIT(printk_log.ts_nsec, "printk_log", "ts_nsec");
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+ OFFSET_INIT(printk_log.len, "printk_log", "len");
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+ OFFSET_INIT(printk_log.text_len, "printk_log", "text_len");
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+ } else {
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+ info->flag_use_printk_log = FALSE;
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+ SIZE_INIT(printk_log, "log");
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+ OFFSET_INIT(printk_log.ts_nsec, "log", "ts_nsec");
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+ OFFSET_INIT(printk_log.len, "log", "len");
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+ OFFSET_INIT(printk_log.text_len, "log", "text_len");
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+ }
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return TRUE;
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}
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@@ -1593,7 +1606,10 @@ write_vmcoreinfo_data(void)
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WRITE_STRUCTURE_SIZE("node_memblk_s", node_memblk_s);
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WRITE_STRUCTURE_SIZE("nodemask_t", nodemask_t);
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WRITE_STRUCTURE_SIZE("pageflags", pageflags);
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- WRITE_STRUCTURE_SIZE("log", log);
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+ if (info->flag_use_printk_log)
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+ WRITE_STRUCTURE_SIZE("printk_log", printk_log);
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+ else
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+ WRITE_STRUCTURE_SIZE("log", printk_log);
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/*
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* write the member offset of 1st kernel
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@@ -1628,9 +1644,16 @@ write_vmcoreinfo_data(void)
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WRITE_MEMBER_OFFSET("vm_struct.addr", vm_struct.addr);
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WRITE_MEMBER_OFFSET("vmap_area.va_start", vmap_area.va_start);
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WRITE_MEMBER_OFFSET("vmap_area.list", vmap_area.list);
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- WRITE_MEMBER_OFFSET("log.ts_nsec", log.ts_nsec);
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- WRITE_MEMBER_OFFSET("log.len", log.len);
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- WRITE_MEMBER_OFFSET("log.text_len", log.text_len);
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+ if (info->flag_use_printk_log) {
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+ WRITE_MEMBER_OFFSET("printk_log.ts_nsec", printk_log.ts_nsec);
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+ WRITE_MEMBER_OFFSET("printk_log.len", printk_log.len);
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+ WRITE_MEMBER_OFFSET("printk_log.text_len", printk_log.text_len);
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+ } else {
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+ /* Compatibility with pre-3.11-rc4 */
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+ WRITE_MEMBER_OFFSET("log.ts_nsec", printk_log.ts_nsec);
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+ WRITE_MEMBER_OFFSET("log.len", printk_log.len);
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+ WRITE_MEMBER_OFFSET("log.text_len", printk_log.text_len);
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+ }
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if (SYMBOL(node_data) != NOT_FOUND_SYMBOL)
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WRITE_ARRAY_LENGTH("node_data", node_data);
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@@ -1909,7 +1932,6 @@ read_vmcoreinfo(void)
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READ_STRUCTURE_SIZE("node_memblk_s", node_memblk_s);
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READ_STRUCTURE_SIZE("nodemask_t", nodemask_t);
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READ_STRUCTURE_SIZE("pageflags", pageflags);
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- READ_STRUCTURE_SIZE("log", log);
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READ_MEMBER_OFFSET("page.flags", page.flags);
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READ_MEMBER_OFFSET("page._count", page._count);
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@@ -1940,9 +1962,20 @@ read_vmcoreinfo(void)
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READ_MEMBER_OFFSET("vm_struct.addr", vm_struct.addr);
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READ_MEMBER_OFFSET("vmap_area.va_start", vmap_area.va_start);
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READ_MEMBER_OFFSET("vmap_area.list", vmap_area.list);
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- READ_MEMBER_OFFSET("log.ts_nsec", log.ts_nsec);
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- READ_MEMBER_OFFSET("log.len", log.len);
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- READ_MEMBER_OFFSET("log.text_len", log.text_len);
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+
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+ READ_STRUCTURE_SIZE("printk_log", printk_log);
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+ if (SIZE(printk_log) != NOT_FOUND_STRUCTURE) {
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+ info->flag_use_printk_log = TRUE;
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+ READ_MEMBER_OFFSET("printk_log.ts_nsec", printk_log.ts_nsec);
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+ READ_MEMBER_OFFSET("printk_log.len", printk_log.len);
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+ READ_MEMBER_OFFSET("printk_log.text_len", printk_log.text_len);
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+ } else {
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+ info->flag_use_printk_log = FALSE;
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+ READ_STRUCTURE_SIZE("log", printk_log);
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+ READ_MEMBER_OFFSET("log.ts_nsec", printk_log.ts_nsec);
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+ READ_MEMBER_OFFSET("log.len", printk_log.len);
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+ READ_MEMBER_OFFSET("log.text_len", printk_log.text_len);
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+ }
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READ_ARRAY_LENGTH("node_data", node_data);
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READ_ARRAY_LENGTH("pgdat_list", pgdat_list);
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@@ -3710,13 +3743,13 @@ dump_log_entry(char *logptr, int fp)
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ulonglong nanos;
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ulong rem;
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- text_len = USHORT(logptr + OFFSET(log.text_len));
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- ts_nsec = ULONGLONG(logptr + OFFSET(log.ts_nsec));
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+ text_len = USHORT(logptr + OFFSET(printk_log.text_len));
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+ ts_nsec = ULONGLONG(logptr + OFFSET(printk_log.ts_nsec));
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nanos = (ulonglong)ts_nsec / (ulonglong)1000000000;
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rem = (ulonglong)ts_nsec % (ulonglong)1000000000;
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- msg = logptr + SIZE(log);
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+ msg = logptr + SIZE(printk_log);
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sprintf(buf, "[%5lld.%06ld] ", nanos, rem/1000);
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@@ -3754,7 +3787,7 @@ log_from_idx(unsigned int idx, char *logbuf)
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* the buffer.
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*/
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- msglen = USHORT(logptr + OFFSET(log.len));
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+ msglen = USHORT(logptr + OFFSET(printk_log.len));
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if (!msglen)
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logptr = logbuf;
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@@ -3775,9 +3808,9 @@ log_next(unsigned int idx, char *logbuf)
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* return the one after that.
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*/
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- msglen = USHORT(logptr + OFFSET(log.len));
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+ msglen = USHORT(logptr + OFFSET(printk_log.len));
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if (!msglen) {
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- msglen = USHORT(logbuf + OFFSET(log.len));
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+ msglen = USHORT(logbuf + OFFSET(printk_log.len));
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return msglen;
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}
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diff --git a/makedumpfile-1.5.4/makedumpfile.h b/makedumpfile-1.5.4/makedumpfile.h
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index c504bfb..3a7e61a 100644
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--- a/makedumpfile-1.5.4/makedumpfile.h
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+++ b/makedumpfile-1.5.4/makedumpfile.h
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@@ -893,6 +893,7 @@ struct DumpInfo {
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int flag_force; /* overwrite existing stuff */
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int flag_exclude_xen_dom;/* exclude Domain-U from xen-kdump */
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int flag_dmesg; /* dump the dmesg log out of the vmcore file */
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+ int flag_use_printk_log; /* did we read printk_log symbol name? */
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int flag_nospace; /* the flag of "No space on device" error */
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unsigned long vaddr_for_vtop; /* virtual address for debugging */
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long page_size; /* size of page */
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@@ -1176,6 +1177,7 @@ struct size_table {
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long list_head;
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long node_memblk_s;
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long nodemask_t;
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+ long printk_log;
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/*
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* for Xen extraction
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@@ -1198,7 +1200,6 @@ struct size_table {
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long cpumask_t;
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long kexec_segment;
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long elf64_hdr;
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- long log;
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long pageflags;
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};
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@@ -1337,11 +1338,11 @@ struct offset_table {
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long p_memsz;
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} elf64_phdr;
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- struct log_s {
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+ struct printk_log_s {
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long ts_nsec;
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long len;
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long text_len;
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- } log;
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+ } printk_log;
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};
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--
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1.8.3.1
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@ -89,6 +89,7 @@ Patch608: kexec-tools-2.0.4-makedumpfile-Use-divideup-to-calculate-maximum-requi
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Patch609: kexec-tools-2.0.4-makedumpfile-cache-Allocate-buffers-at-initialization-t.patch
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Patch610: kexec-tools-2.0.4-makedumpfile-cache-Reuse-entry-in-pending-list.patch
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Patch611: kexec-tools-2.0.4-makedumpfile-disable-mmap.patch
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Patch612: kexec-tools-2.0.4-makedumpfile-Understand-v3.11-rc4-dmesg.patch
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%description
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kexec-tools provides /sbin/kexec binary that facilitates a new
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@ -131,6 +132,7 @@ tar -z -x -v -f %{SOURCE19}
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%patch001 -p1
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%patch002 -p1
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%patch003 -p1
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%patch612 -p1
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tar -z -x -v -f %{SOURCE13}
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