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authorJiri Olsa <jolsa@redhat.com>2012-11-12 18:34:02 +0100
committerArnaldo Carvalho de Melo <acme@redhat.com>2012-11-14 16:52:09 -0300
commit2711926a416733b853977a0e014c713955ad0d8a (patch)
tree2842a9fff2adf57094876826b1a580a6b64a9926 /tools
parent774cb499ca9ab0e5950a149d1fe102b125da1cee (diff)
perf tools: Ensure single disable call per event in record comand
It's possible we issue the event disable ioctl multiple times until we read the final portion of the mmap buffer. Ensuring just single disable ioctl call for event, because there's no need to do that more than once. Signed-off-by: Jiri Olsa <jolsa@redhat.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1352741644-16809-4-git-send-email-jolsa@redhat.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools')
-rw-r--r--tools/perf/builtin-record.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index 268b356391f..f3151d3c70c 100644
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -502,6 +502,7 @@ static int __cmd_record(struct perf_record *rec, int argc, const char **argv)
struct perf_evlist *evsel_list = rec->evlist;
const char *output_name = rec->output_name;
struct perf_session *session;
+ bool disabled = false;
rec->progname = argv[0];
@@ -735,8 +736,10 @@ static int __cmd_record(struct perf_record *rec, int argc, const char **argv)
* die with the process and we wait for that. Thus no need to
* disable events in this case.
*/
- if (done && !perf_target__none(&opts->target))
+ if (done && !disabled && !perf_target__none(&opts->target)) {
perf_evlist__disable(evsel_list);
+ disabled = true;
+ }
}
if (quiet || signr == SIGUSR1)