linux-kernel - [tip: sched/core] sched/proc: Print accurate cpumask vs migrate

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Date:   Wed, 11 Nov 2020 08:23:15 -0000
From:   "tip-bot2 for Peter Zijlstra" <tip-bot2@...utronix.de>
To:     linux-tip-commits@...r.kernel.org
Cc:     "Peter Zijlstra (Intel)" <peterz@...radead.org>,
        Valentin Schneider <valentin.schneider@....com>,
        Daniel Bristot de Oliveira <bristot@...hat.com>,
        x86@...nel.org, linux-kernel@...r.kernel.org
Subject: [tip: sched/core] sched/proc: Print accurate cpumask vs migrate_disable()

The following commit has been merged into the sched/core branch of tip:

Commit-ID:     86fbcd3b4ba2c3e19daf705bc13d90fb53aab648
Gitweb:        https://git.kernel.org/tip/86fbcd3b4ba2c3e19daf705bc13d90fb53aab648
Author:        Peter Zijlstra <peterz@...radead.org>
AuthorDate:    Mon, 05 Oct 2020 12:49:16 +02:00
Committer:     Peter Zijlstra <peterz@...radead.org>
CommitterDate: Tue, 10 Nov 2020 18:39:01 +01:00

sched/proc: Print accurate cpumask vs migrate_disable()

Ensure /proc/*/status doesn't print 'random' cpumasks due to
migrate_disable().

Signed-off-by: Peter Zijlstra (Intel) <peterz@...radead.org>
Reviewed-by: Valentin Schneider <valentin.schneider@....com>
Reviewed-by: Daniel Bristot de Oliveira <bristot@...hat.com>
Link: https://lkml.kernel.org/r/20201023102347.593984734@infradead.org
---
 fs/proc/array.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/fs/proc/array.c b/fs/proc/array.c
index 65ec202..7052441 100644
--- a/fs/proc/array.c
+++ b/fs/proc/array.c
@@ -382,9 +382,9 @@ static inline void task_context_switch_counts(struct seq_file *m,
 static void task_cpus_allowed(struct seq_file *m, struct task_struct *task)
 {
 	seq_printf(m, "Cpus_allowed:\t%*pb\n",
-		   cpumask_pr_args(task->cpus_ptr));
+		   cpumask_pr_args(&task->cpus_mask));
 	seq_printf(m, "Cpus_allowed_list:\t%*pbl\n",
-		   cpumask_pr_args(task->cpus_ptr));
+		   cpumask_pr_args(&task->cpus_mask));
 }
 
 static inline void task_core_dumping(struct seq_file *m, struct mm_struct *mm)