linux-kernel - [RFC] sched: show cpu number when sched_show

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Message-Id: <20230208124655.2592560-1-peng.fan@oss.nxp.com>
Date:   Wed,  8 Feb 2023 20:46:55 +0800
From:   "Peng Fan (OSS)" <peng.fan@....nxp.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, vschneid@...hat.com
Cc:     linux-kernel@...r.kernel.org, Peng Fan <peng.fan@....com>
Subject: [RFC] sched: show cpu number when sched_show_task

From: Peng Fan <peng.fan@....com>

It would be helpful to show cpu number when dump task. Such as
when doing system suspend, we could know the failed freezing
process run on which cpu.

Signed-off-by: Peng Fan <peng.fan@....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 daff72f00385..0c7a1b2f7baf 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -8876,7 +8876,7 @@ void sched_show_task(struct task_struct *p)
 	if (!try_get_task_stack(p))
 		return;
 
-	pr_info("task:%-15.15s state:%c", p->comm, task_state_to_char(p));
+	pr_info("task:%-15.15s state:%c cpu:0x%x", p->comm, task_state_to_char(p), task_cpu(p));
 
 	if (task_is_running(p))
 		pr_cont("  running task    ");
-- 
2.37.1