import memstrack-0.2.4-2.el8

This commit is contained in:
CentOS Sources 2022-11-08 01:59:07 -05:00 committed by Stepan Oksanichenko
parent cc5648971c
commit cc1294dad3
5 changed files with 158 additions and 9 deletions

2
.gitignore vendored
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@ -1 +1 @@
SOURCES/memstrack-bdc9386.tar.gz
SOURCES/v0.2.4.tar.gz

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@ -1 +1 @@
47747f1a981523c9c5caadf7c0ccb30baa3edabb SOURCES/memstrack-bdc9386.tar.gz
4c54a54025a506f5b01a20b377884013459c0e42 SOURCES/v0.2.4.tar.gz

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@ -0,0 +1,88 @@
From 2d27b3694bf0996767b6e5282b9d39784d1524c1 Mon Sep 17 00:00:00 2001
From: Tao Liu <ltao@redhat.com>
Date: Mon, 11 Jul 2022 15:28:25 +0800
Subject: [PATCH 1/2] Skip memcg info in __process_stacktrace for page_owner
backend
Kernel patch set [1] extended page_owner to show memcg information:
Page allocated via order 0, mask 0x0(), pid 1, tgid 1 (swapper/0), ts 158908732 ns, free_ts 0 ns
PFN 4540 type Unmovable Block 8 type Unmovable Flags 0xfffffc0010200(slab|head|node=0|zone=1|lastcpupid=0x1fffff)
register_early_stack+0x28/0x57
init_page_owner+0x1d/0x2f
kernel_init_freeable+0x138/0x1a2
kernel_init+0x16/0x120
Slab cache page
Page allocated via order 0, mask 0x400dc0(GFP_KERNEL_ACCOUNT|__GFP_ZERO), pid 737, tgid 737 (NetworkManager), ts 3964670439 ns, free_ts 3961489285 ns
PFN 11172 type Unmovable Block 21 type Unmovable Flags 0xfffffc0000000(node=0|zone=1|lastcpupid=0x1fffff)
get_page_from_freelist+0x3f0/0x500
__alloc_pages+0xe6/0x230
pte_alloc_one+0x15/0x50
...
asm_exc_page_fault+0x1e/0x30
Charged (via objcg) to memcg NetworkManager.service
"^Slab|^Charged" lines are unexpected for __process_stacktrace.
As a result, error messages as "Page owner stacktrace malformed"
will be output and fail.
This patch fix the issue by skip the memcg info lines when iterating
stacktrace.
[1]: https://lore.kernel.org/all/20220202203036.744010-3-longman@redhat.com/T/#mcd67a65c84092f71efb766d0d509f0e8255d4dc2
Signed-off-by: Tao Liu <ltao@redhat.com>
---
src/backend/page_owner.c | 21 +++++++++++++++++++++
1 file changed, 21 insertions(+)
diff --git a/src/backend/page_owner.c b/src/backend/page_owner.c
index f66d77d..156f688 100644
--- a/src/backend/page_owner.c
+++ b/src/backend/page_owner.c
@@ -37,6 +37,23 @@
static char *page_owner_file;
+static char *memcg_info[] = {
+ "Slab cache page",
+ "Charged ",
+};
+
+static int is_memcg_info(char *str)
+{
+ for (int i = 0;
+ i < sizeof(memcg_info) / sizeof(__typeof__(memcg_info[0]));
+ i++) {
+ if (!strncmp(str, memcg_info[i], strlen(memcg_info[i]))) {
+ return true;
+ }
+ }
+ return false;
+}
+
static struct Tracenode* __process_stacktrace(
struct Tracenode *tn, struct PageEvent *pe, char *line, FILE *file)
{
@@ -45,6 +62,7 @@ static struct Tracenode* __process_stacktrace(
int callsite_len;
unsigned long len;
+retry:
if (!fgets(line, MAX_LINE, file)) {
log_error("Page owner file ended unexpectly before stacktrace.\n");
return NULL;
@@ -56,6 +74,9 @@ static struct Tracenode* __process_stacktrace(
return NULL;
}
+ if (is_memcg_info(line))
+ goto retry;
+
/* Empty line, end of a stacktrace */
if (line[0] == '\n' || line[0] == '\r')
return tn;
--
2.33.1

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From 8c42fcfa92998da170ee84cd24c2377db2e90f33 Mon Sep 17 00:00:00 2001
From: Tao Liu <ltao@redhat.com>
Date: Tue, 12 Jul 2022 19:41:25 +0800
Subject: [PATCH 2/2] Fix data type error in perf_handle_mm_page_alloc
For systems as s390, unsigned long and unsigned int are different in
size. After expanding the macro, the code will be:
unsigned int order = *((unsigned long*)
(((const unsigned char*)(&raw->data)) +
((struct __perf_event_field_table_mm_page_alloc*)(perf_event_mm_page_alloc.fields))->order_info.offset));
or simply:
unsigned int order = *((unsigned long*)
(((const unsigned char*)(&raw->data)) + 16));
If we have the following data array:
Raw data[16]: 0x0
Raw data[17]: 0x0
Raw data[18]: 0x0
Raw data[19]: 0x2
Raw data[20]: 0x0
Raw data[21]: 0x0
Raw data[22]: 0xc
Raw data[23]: 0xc0
The order will be: 0x0cc0, instead of 0x2.
This patch will fix the error data type.
Signed-off-by: Tao Liu <ltao@redhat.com>
---
src/backend/perf-events.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/src/backend/perf-events.c b/src/backend/perf-events.c
index 0252991..67f1dad 100644
--- a/src/backend/perf-events.c
+++ b/src/backend/perf-events.c
@@ -156,7 +156,7 @@ static int perf_handle_mm_page_alloc(const unsigned char* header) {
sizeof(callchain->ips) * callchain->nr);
unsigned long pfn = read_data_from_perf_raw(mm_page_alloc, pfn, unsigned long, raw);
- unsigned int order = read_data_from_perf_raw(mm_page_alloc, order, unsigned long, raw);
+ unsigned int order = read_data_from_perf_raw(mm_page_alloc, order, unsigned int, raw);
int pid = read_data_from_perf_raw(mm_page_alloc, common_pid, int, raw);
// TODO: pfn == -1?
--
2.33.1

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@ -1,11 +1,8 @@
# vim: syntax=spec
%global gitcommit bdc9386376f377218b25624a580a39c4d5917f71
%global gitshortcommit %(c=%{gitcommit}; echo ${c:0:7})
%global snapshotdate 20200806
Name: memstrack
Version: 0.1.11
Release: 1%{?dist}
Version: 0.2.4
Release: 2%{?dist}
Summary: A memory allocation tracer, like a hot spot analyzer for memory allocation
License: GPLv3
URL: https://github.com/ryncsn/memstrack
@ -13,13 +10,18 @@ VCS: git+git@github.com:ryncsn/memstrack.git
BuildRequires: gcc
BuildRequires: ncurses-devel
Source: https://github.com/ryncsn/memstrack/archive/%{gitcommit}/memstrack-%{gitshortcommit}.tar.gz
Source: https://github.com/ryncsn/memstrack/archive/refs/tags/v%{version}.tar.gz
Patch1: 0001-Skip-memcg-info-in-__process_stacktrace-for-page_own.patch
Patch2: 0002-Fix-data-type-error-in-perf_handle_mm_page_alloc.patch
%description
A memory allocation tracer, like a hot spot analyzer for memory allocation
%prep
%setup -q -n memstrack-%{gitcommit}
%setup -q -n memstrack-%{version}
%patch1 -p1
%patch2 -p1
%build
%{set_build_flags}
@ -35,6 +37,12 @@ install -p -m 755 memstrack %{buildroot}/%{_bindir}
%{_bindir}/memstrack
%changelog
* Fri Jul 15 2022 Tao Liu <ltao@redhat.com> - 0.2.4-2
- Revert bz2107730
* Fri Jul 15 2022 Tao Liu <ltao@redhat.com> - 0.2.4-1
- Rebase to latest upstream(813c2feaa2f)
* Tue Aug 6 2020 Kairui Song <kasong@redhat.com> - 0.1.11-1
- Fix memstrack failure with large memory hole