[PATCH] perf: fix stat attach bogus counts

From: Stephane Eranian <eranian@google.com>
To: linux-kernel@vger.kernel.org
Cc: peterz@infradead.org, mingo@elte.hu, paulus@samba.org,
	davem@davemloft.net, fweisbec@gmail.com, robert.richter@amd.com,
	perfmon2-devel@lists.sf.net, eranian@gmail.com,
	eranian@google.com
Subject: [PATCH] perf: fix stat attach bogus counts
Date: Wed, 17 Mar 2010 15:11:01 +0200	[thread overview]
Message-ID: <4ba0e3c7.1c185e0a.7786.ffffb1d9@mx.google.com> (raw)

	When perf stat -p pid is used, the events must be enabled
	immediately as there is no exec and thus no enable_on_exec.

	Signed-off-by: Stephane Eranian <eranian@google.com>

--
 builtin-stat.c |    6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c
index 95db31c..3a91fad 100644
--- a/tools/perf/builtin-stat.c
+++ b/tools/perf/builtin-stat.c
@@ -159,8 +159,10 @@ static void create_perf_stat_counter(int counter, int pid)
 		}
 	} else {
 		attr->inherit	     = inherit;
-		attr->disabled	     = 1;
-		attr->enable_on_exec = 1;
+		if (target_pid == -1) {
+			attr->disabled	     = 1;
+			attr->enable_on_exec = 1;
+		}
 
 		fd[0][counter] = sys_perf_event_open(attr, pid, -1, -1, 0);
 		if (fd[0][counter] < 0 && verbose)
