linux-kernel - [PATCH] sched/core: aplly TASK

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Message-Id: <1637678771-17525-1-git-send-email-liupeibao@163.com>
Date:   Tue, 23 Nov 2021 22:46:11 +0800
From:   Liu Peibao <liupeibao@....com>
To:     mingo@...hat.com, peterz@...radead.org, juri.lelli@...hat.com,
        vincent.guittot@...aro.org, dietmar.eggemann@....com,
        rostedt@...dmis.org, bsegall@...gle.com, mgorman@...e.de,
        bristot@...hat.com
Cc:     linux-kernel@...r.kernel.org
Subject: [PATCH] sched/core: aplly TASK_RUNNING in state judgement

Looks more clearly.

Signed-off-by: Liu Peibao <liupeibao@....com>
---
 kernel/sched/core.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index 3c9b0fd..abafd2e 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -6181,7 +6181,7 @@ static void __sched notrace __schedule(unsigned int sched_mode)
 	 *  - ptrace_{,un}freeze_traced() can change ->state underneath us.
 	 */
 	prev_state = READ_ONCE(prev->__state);
-	if (!(sched_mode & SM_MASK_PREEMPT) && prev_state) {
+	if (!(sched_mode & SM_MASK_PREEMPT) && (prev_state != TASK_RUNNING)) {
 		if (signal_pending_state(prev_state, prev)) {
 			WRITE_ONCE(prev->__state, TASK_RUNNING);
 		} else {
-- 
1.8.3.1