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* [PATCH -next] jbd2: use the correct print format
@ 2022-03-18 15:56 Bixuan Cui
  2022-03-21  9:25 ` Jan Kara
  0 siblings, 1 reply; 5+ messages in thread
From: Bixuan Cui @ 2022-03-18 15:56 UTC (permalink / raw)
  To: linux-kernel; +Cc: cuibixuan, rostedt, mingo, yi.zhang, jack

The print format error was found when using ftrace event:
    <...>-1406 [000] .... 23599442.895823: jbd2_end_commit: dev 252,8 transaction -1866216965 sync 0 head -1866217368
    <...>-1406 [000] .... 23599442.896299: jbd2_start_commit: dev 252,8 transaction -1866216964 sync 0

Print transaction and head with the unsigned format "%u" instead.

Fixes: 879c5e6b7cb4 ('jbd2: convert instrumentation from markers to tracepoints')
Signed-off-by: Bixuan Cui <cuibixuan@linux.alibaba.com>
---
 include/trace/events/jbd2.h | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/include/trace/events/jbd2.h b/include/trace/events/jbd2.h
index a4dfe005983d..5be1aa1691fb 100644
--- a/include/trace/events/jbd2.h
+++ b/include/trace/events/jbd2.h
@@ -40,7 +40,7 @@ DECLARE_EVENT_CLASS(jbd2_commit,
 	TP_STRUCT__entry(
 		__field(	dev_t,	dev			)
 		__field(	char,	sync_commit		  )
-		__field(	int,	transaction		  )
+		__field(	tid_t,	transaction		  )
 	),
 
 	TP_fast_assign(
@@ -49,7 +49,7 @@ DECLARE_EVENT_CLASS(jbd2_commit,
 		__entry->transaction	= commit_transaction->t_tid;
 	),
 
-	TP_printk("dev %d,%d transaction %d sync %d",
+	TP_printk("dev %d,%d transaction %u sync %d",
 		  MAJOR(__entry->dev), MINOR(__entry->dev),
 		  __entry->transaction, __entry->sync_commit)
 );
@@ -97,8 +97,8 @@ TRACE_EVENT(jbd2_end_commit,
 	TP_STRUCT__entry(
 		__field(	dev_t,	dev			)
 		__field(	char,	sync_commit		  )
-		__field(	int,	transaction		  )
-		__field(	int,	head		  	  )
+		__field(	tid_t,	transaction		  )
+		__field(	tid_t,	head		  	  )
 	),
 
 	TP_fast_assign(
@@ -108,7 +108,7 @@ TRACE_EVENT(jbd2_end_commit,
 		__entry->head		= journal->j_tail_sequence;
 	),
 
-	TP_printk("dev %d,%d transaction %d sync %d head %d",
+	TP_printk("dev %d,%d transaction %u sync %d head %u",
 		  MAJOR(__entry->dev), MINOR(__entry->dev),
 		  __entry->transaction, __entry->sync_commit, __entry->head)
 );
-- 
2.19.1.6.gb485710b


^ permalink raw reply	[flat|nested] 5+ messages in thread

end of thread, other threads:[~2022-04-25 12:03 UTC | newest]

Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2022-03-18 15:56 [PATCH -next] jbd2: use the correct print format Bixuan Cui
2022-03-21  9:25 ` Jan Kara
2022-04-22  2:42   ` 回复:[PATCH " cuibixuan
2022-04-22  9:14     ` Jan Kara
2022-04-25 12:03       ` Bixuan Cui

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