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perf_counter: Synthesize VDSO mmap event

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perf record synthesizes mmap events for the running process.
Right now it just catches file mappings, but we can check for
the vdso symbol and add that too.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <20090716104817.517264409@samba.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Anton Blanchard 2009-07-16 15:44:29 +02:00 committed by Ingo Molnar
parent 413ee3b48a
commit 11b5f81e1b
1 changed files with 4 additions and 0 deletions
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4
tools/perf/builtin-record.c
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@ -313,6 +313,10 @@ static void pid_synthesize_mmap_samples(pid_t pid)
if (*pbf == 'x') { /* vm_exec */ if (*pbf == 'x') { /* vm_exec */
char *execname = strchr(bf, '/'); char *execname = strchr(bf, '/');
/* Catch VDSO */
if (execname == NULL)
execname = strstr(bf, "[vdso]");
if (execname == NULL) if (execname == NULL)
continue; continue;