linux-kernel - [PATCH] tracing: Fix clear of RECORDED_TGID flag when disabling trace event

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Date:   Tue,  5 Sep 2017 13:36:46 +0800
From:   Chunyu Hu <chuhu@...hat.com>
To:     rostedt@...dmis.org
Cc:     mingo@...nel.org, linux-kernel@...r.kernel.org, chuhu@...hat.com
Subject: [PATCH] tracing: Fix clear of RECORDED_TGID flag when disabling trace event

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. Fix d914ba37("tracing: Add support
for recording tgid of tasks")

Signed-off-by: Chunyu Hu <chuhu@...hat.com>
---
 kernel/trace/trace_events.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/trace/trace_events.c b/kernel/trace/trace_events.c
index c93540c..8746839 100644
--- a/kernel/trace/trace_events.c
+++ b/kernel/trace/trace_events.c
@@ -406,7 +406,7 @@ static int __ftrace_event_enable_disable(struct trace_event_file *file,
 
 			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);
-- 
1.8.3.1