[PATCH 4.13 078/109] tracing: Fix clear of RECORDED_TGID flag when disabling trace event

Greg Kroah-Hartman
2017-09-24T20:43:09Z

From: Chunyu Hu <chuhu@redhat.com>

commit 7685ab6c58557c6234f3540260195ecbee7fc4b3 upstream.

When disabling one trace event, the RECORDED_TGID flag in the event
file is not correctly cleared. It's clearing RECORDED_CMD flag when
it should clear RECORDED_TGID flag.

Link: http://lkml.kernel.org/r/1504589806-8425-1-git-send-email-chuhu@redhat.com

Cc: Joel Fernandes <joelaf@google.com>
Fixes: d914ba37d7 ("tracing: Add support for recording tgid of tasks")
Signed-off-by: Chunyu Hu <chuhu@redhat.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
kernel/trace/trace_events.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

--- a/kernel/trace/trace_events.c
+++ b/kernel/trace/trace_events.c
@@ -406,7 +406,7 @@ static int __ftrace_event_enable_disable

if (file->flags & EVENT_FILE_FL_RECORDED_TGID) {
tracing_stop_tgid_record();
- clear_bit(EVENT_FILE_FL_RECORDED_CMD_BIT, &file->flags);
+ clear_bit(EVENT_FILE_FL_RECORDED_TGID_BIT, &file->flags);
}

call->class->reg(call, TRACE_REG_UNREGISTER, file);