xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

perf symbols: Ditch vdso global variable

Browse Source 
We can check using strcmp, most DSOs don't start with '[' so the
test is cheap enough and we had to test it there anyway since
when reading perf.data files we weren't calling the routine that
created this global variable and thus weren't setting it as
"loaded", which was causing a bogus:

  Failed to open [vdso], continuing without symbols

Message as the first line of 'perf report'.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <1265223128-11786-3-git-send-email-acme@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Arnaldo Carvalho de Melo
2010-02-03 16:52:02 -02:00
committed by Ingo Molnar
parent 6275ce2d5f
commit 8d92c02ab0
3 changed files with 15 additions and 24 deletions
Download Patch File Download Diff File Expand all files Collapse all files

7
tools/perf/util/map.c
View File

@@ -68,8 +68,13 @@ struct map *map__new(struct mmap_event *event, enum map_type type,
map__init(self, type, event->start, event->start + event->len,
event->pgoff, dso);
if (self->dso == vdso || anon)
if (anon) {
set_identity:
self->map_ip = self->unmap_ip = identity__map_ip;
} else if (strcmp(filename, "[vdso]") == 0) {
dso__set_loaded(dso, self->type);
goto set_identity;
}
}
return self;
out_delete: