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| author | Jiri Olsa <jolsa@redhat.com> | 2012-02-05 18:11:05 +0100 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2012-02-06 21:57:39 +0100 |
| commit | bf32c9ebc9890764c7a9984e3a0c8a57a059753d (patch) | |
| tree | bdaa97b163af50cd43adca1f0c4a9ca316d4b436 /tools | |
| parent | perf tools: Fix perf stack to non executable on x86_64 (diff) | |
| download | linux-bf32c9ebc9890764c7a9984e3a0c8a57a059753d.tar.xz linux-bf32c9ebc9890764c7a9984e3a0c8a57a059753d.zip | |
perf tools: Fix prefix matching for kernel maps
In some perf ancient versions we used '[kernel.kallsyms._text]' as the
name for the kernel map.
This got changed with commit:
perf: 'perf kvm' tool for monitoring guest performance from host
commit a1645ce12adb6c9cc9e19d7695466204e3f017fe
Author: Zhang, Yanmin <yanmin_zhang@linux.intel.com>
and we started to use following name '[kernel.kallsyms]_text'.
This name change is important for the report code dealing with ancient
perf data. When processing the kernel map event, we need to recognize
the old naming (dont match the last ']') and initialize the kernel map
correctly.
The subsequent call to maps__set_kallsyms_ref_reloc_sym deals with the
superfluous ']' to get correct symbol name.
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1328461865-6127-1-git-send-email-jolsa@redhat.com
Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/perf/util/event.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/tools/perf/util/event.c b/tools/perf/util/event.c index 73ddaf06b8e7..2044324b755a 100644 --- a/tools/perf/util/event.c +++ b/tools/perf/util/event.c @@ -554,7 +554,7 @@ static int perf_event__process_kernel_mmap(struct perf_tool *tool __used, is_kernel_mmap = memcmp(event->mmap.filename, kmmap_prefix, - strlen(kmmap_prefix)) == 0; + strlen(kmmap_prefix) - 1) == 0; if (event->mmap.filename[0] == '/' || (!is_kernel_mmap && event->mmap.filename[0] == '[')) { |