From: Anton Blanchard <anton@samba.org>
To: a.p.zijlstra@chello.nl, mingo@elte.hu, paulus@samba.org,
fweisbec@gmail.com
Cc: linux-kernel@vger.kernel.org
Subject: [patch 2/5] perf_counter: Synthesize VDSO mmap event
Date: Thu, 16 Jul 2009 20:42:49 +1000 [thread overview]
Message-ID: <20090716104817.517264409@samba.org> (raw)
In-Reply-To: 20090716104247.536695580@samba.org
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>
---
Only tested on PowerPC, but I assume x86 has the same issue.
Index: linux.trees.git/tools/perf/builtin-record.c
===================================================================
--- linux.trees.git.orig/tools/perf/builtin-record.c 2009-07-13 12:33:49.000000000 +1000
+++ linux.trees.git/tools/perf/builtin-record.c 2009-07-13 13:25:00.000000000 +1000
@@ -313,6 +313,10 @@
if (*pbf == 'x') { /* vm_exec */
char *execname = strchr(bf, '/');
+ /* Catch VDSO */
+ if (execname == NULL)
+ execname = strstr(bf, "[vdso]");
+
if (execname == NULL)
continue;
--
next prev parent reply other threads:[~2009-07-16 10:54 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-07-16 10:42 [patch 0/5] Various perfcounter fixes Anton Blanchard
2009-07-16 10:42 ` [patch 1/5] perf_counter: Make sure we dont leak kernel memory to userspace Anton Blanchard
2009-07-18 9:50 ` [tip:perfcounters/urgent] " tip-bot for Anton Blanchard
2009-07-16 10:42 ` Anton Blanchard [this message]
2009-07-18 9:50 ` [tip:perfcounters/urgent] perf_counter: Synthesize VDSO mmap event tip-bot for Anton Blanchard
2009-07-16 10:42 ` [patch 3/5] perf_counter: Log vfork as a fork event Anton Blanchard
2009-07-18 9:50 ` [tip:perfcounters/urgent] " tip-bot for Anton Blanchard
2009-07-16 10:42 ` [patch 4/5] perf_counter: Add perf record option to log addresses Anton Blanchard
2009-07-18 9:50 ` [tip:perfcounters/urgent] " tip-bot for Anton Blanchard
2009-07-16 10:42 ` [patch 5/5] perf_counter: Make call graph option consistent Anton Blanchard
2009-07-16 14:49 ` Frederic Weisbecker
2009-07-18 9:50 ` [tip:perfcounters/urgent] " tip-bot for Anton Blanchard
2009-07-16 14:16 ` [patch 0/5] Various perfcounter fixes Peter Zijlstra
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