linux-kernel - [PATCH] tracing: Remove unused event variable in tracing_iter

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Message-Id: <20200507074739.43449-1-songmuchun@bytedance.com>
Date:   Thu,  7 May 2020 15:47:39 +0800
From:   Muchun Song <songmuchun@...edance.com>
To:     rostedt@...dmis.org, mingo@...nel.org
Cc:     linux-kernel@...r.kernel.org,
        Muchun Song <songmuchun@...edance.com>
Subject: [PATCH] tracing: Remove unused event variable in tracing_iter_reset

We do not use the event variable, just remove it.

Signed-off-by: Muchun Song <songmuchun@...edance.com>
---
 kernel/trace/trace.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index 8d2b988126250..6be74d2a7056f 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -3566,7 +3566,6 @@ static void *s_next(struct seq_file *m, void *v, loff_t *pos)
 
 void tracing_iter_reset(struct trace_iterator *iter, int cpu)
 {
-	struct ring_buffer_event *event;
 	struct ring_buffer_iter *buf_iter;
 	unsigned long entries = 0;
 	u64 ts;
@@ -3584,7 +3583,7 @@ void tracing_iter_reset(struct trace_iterator *iter, int cpu)
 	 * that a reset never took place on a cpu. This is evident
 	 * by the timestamp being before the start of the buffer.
 	 */
-	while ((event = ring_buffer_iter_peek(buf_iter, &ts))) {
+	while (ring_buffer_iter_peek(buf_iter, &ts)) {
 		if (ts >= iter->array_buffer->time_start)
 			break;
 		entries++;
-- 
2.11.0