[PATCH v2] sched/debug: correct printing for rq->nr_uninterruptible

From: "晏艳(采苓)" <yanyan.yan@antgroup.com>
To: linux-kernel@vger.kernel.org
Cc: 谈鉴锋 <henry.tjf@antgroup.com>,
	"Tiwei Bie" <tiwei.btw@antgroup.com>,
	peterz@infradead.org, "晏艳(采苓)" <yanyan.yan@antgroup.com>,
	"Ingo Molnar" <mingo@redhat.com>,
	"Juri Lelli" <juri.lelli@redhat.com>,
	"Vincent Guittot" <vincent.guittot@linaro.org>,
	"Dietmar Eggemann" <dietmar.eggemann@arm.com>,
	"Steven Rostedt" <rostedt@goodmis.org>,
	"Ben Segall" <bsegall@google.com>, "Mel Gorman" <mgorman@suse.de>,
	"Daniel Bristot de Oliveira" <bristot@redhat.com>,
	"Valentin Schneider" <vschneid@redhat.com>
Subject: [PATCH v2] sched/debug: correct printing for rq->nr_uninterruptible
Date: Sat, 06 May 2023 15:42:53 +0800	[thread overview]
Message-ID: <20230506074253.44526-1-yanyan.yan@antgroup.com> (raw)

Commit e6fe3f422be1 ("sched: Make multiple runqueue task counters
32-bit") changed the type for rq->nr_uninterruptible from "unsigned
long" to "unsigned int", but left wrong cast print to
/sys/kernel/debug/sched/debug and to the console.

For example, nr_uninterruptible's value is fffffff7 with type
"unsigned int", (long)nr_uninterruptible shows 4294967287 while
(int)nr_uninterruptible prints -9. So using int cast fixes wrong
printing.

Signed-off-by: Yan Yan <yanyan.yan@antgroup.com>
---
 kernel/sched/debug.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/sched/debug.c b/kernel/sched/debug.c
index 667876da8382..ac6684cd4ae4 100644
--- a/kernel/sched/debug.c
+++ b/kernel/sched/debug.c
@@ -730,7 +730,7 @@ static void print_cpu(struct seq_file *m, int cpu)
 #define P(x)								\
 do {									\
 	if (sizeof(rq->x) == 4)						\
-		SEQ_printf(m, "  .%-30s: %ld\n", #x, (long)(rq->x));	\
+		SEQ_printf(m, "  .%-30s: %d\n", #x, (int)(rq->x));	\
 	else								\
 		SEQ_printf(m, "  .%-30s: %Ld\n", #x, (long long)(rq->x));\
 } while (0)
-- 
2.32.0.3.g01195cf9f

