Commit 922d0e4d authored by Vladimir Nikulichev's avatar Vladimir Nikulichev Committed by Jiri Olsa

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: default avatarVladimir Nikulichev <nvs@tbricks.com>
Tested-by: default avatarNamhyung Kim <namhyung@kernel.org>
Reviewed-by: default avatarAdrian Hunter <adrian.hunter@intel.com>
Link: http://lkml.kernel.org/r/969812.163009436-sendEmail@nvsSigned-off-by: default avatarJiri Olsa <jolsa@redhat.com>
parent acb61fc8
......@@ -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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