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| author | Vladimir Nikulichev <nvs@tbricks.com> | 2014-04-17 08:27:01 -0700 |
|---|---|---|
| committer | Jiri Olsa <jolsa@redhat.com> | 2014-04-20 00:15:11 +0200 |
| commit | 922d0e4d9f042f68baea28e5b3bd7bb708875f2e (patch) | |
| tree | 2902ece1897531ddd2c193ca5df8c690aea49c3d | |
| parent | acb61fc8ed73eb477a9044272d7a1b1f5a572f91 (diff) | |
| download | op-kernel-dev-922d0e4d9f042f68baea28e5b3bd7bb708875f2e.zip op-kernel-dev-922d0e4d9f042f68baea28e5b3bd7bb708875f2e.tar.gz | |
perf tools: Adjust symbols in VDSO
pert-report doesn't resolve function names in VDSO:
$ perf report --stdio -g flat,0.0,15,callee --sort pid
...
8.76%
0x7fff6b1fe861
__gettimeofday
ACE_OS::gettimeofday()
...
In this case symbol values should be adjusted the same way as for executables,
relocatable objects and prelinked libraries.
After fix:
$ perf report --stdio -g flat,0.0,15,callee --sort pid
...
8.76%
__vdso_gettimeofday
__gettimeofday
ACE_OS::gettimeofday()
Signed-off-by: Vladimir Nikulichev <nvs@tbricks.com>
Tested-by: Namhyung Kim <namhyung@kernel.org>
Reviewed-by: Adrian Hunter <adrian.hunter@intel.com>
Link: http://lkml.kernel.org/r/969812.163009436-sendEmail@nvs
Signed-off-by: Jiri Olsa <jolsa@redhat.com>
| -rw-r--r-- | tools/perf/util/symbol-elf.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/tools/perf/util/symbol-elf.c b/tools/perf/util/symbol-elf.c index 3b7dbf5..6864661 100644 --- a/tools/perf/util/symbol-elf.c +++ b/tools/perf/util/symbol-elf.c @@ -6,6 +6,7 @@ #include <inttypes.h> #include "symbol.h" +#include "vdso.h" #include <symbol/kallsyms.h> #include "debug.h" @@ -618,6 +619,7 @@ int symsrc__init(struct symsrc *ss, struct dso *dso, const char *name, GElf_Shdr shdr; ss->adjust_symbols = (ehdr.e_type == ET_EXEC || ehdr.e_type == ET_REL || + is_vdso_map(dso->short_name) || elf_section_by_name(elf, &ehdr, &shdr, ".gnu.prelink_undo", NULL) != NULL); |
