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From: Stephane Eranian on 17 Mar 2010 10:20
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(a)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)
--
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