From 11b5f81e1b0ea0bc84fe32f0a27054e052b2bf84 Mon Sep 17 00:00:00 2001
From: Anton Blanchard <anton@samba.org>
Date: Thu, 16 Jul 2009 15:44:29 +0200
Subject: [PATCH] perf_counter: Synthesize VDSO mmap event

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>
---
 tools/perf/builtin-record.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index 4ef78a5e6f32..072aaf0369f8 100644
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -313,6 +313,10 @@ static void pid_synthesize_mmap_samples(pid_t pid)
 		if (*pbf == 'x') { /* vm_exec */
 			char *execname = strchr(bf, '/');
 
+			/* Catch VDSO */
+			if (execname == NULL)
+				execname = strstr(bf, "[vdso]");
+
 			if (execname == NULL)
 				continue;