Commit-ID: 922d0e4d9f042f68baea28e5b3bd7bb708875f2e
Gitweb: http://git.kernel.org/tip/922d0e4d9f042f68baea28e5b3bd7bb708875f2e
Author: Vladimir Nikulichev <nvs@xxxxxxxxxxx>
AuthorDate: Thu, 17 Apr 2014 08:27:01 -0700
Committer: Jiri Olsa <jolsa@xxxxxxxxxx>
CommitDate: Sun, 20 Apr 2014 00:15:11 +0200
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@xxxxxxxxxxx>
Tested-by: Namhyung Kim <namhyung@xxxxxxxxxx>
Reviewed-by: Adrian Hunter <adrian.hunter@xxxxxxxxx>
Link: http://lkml.kernel.org/r/969812.163009436-sendEmail@nvs
Signed-off-by: Jiri Olsa <jolsa@xxxxxxxxxx>
---
tools/perf/util/symbol-elf.c | 2 ++
1 file changed, 2 insertions(+)
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);
--
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