workqueue: wq_watchdog_touch is always called with valid CPU

[ Upstream commit 18e24deb1cc92f2068ce7434a94233741fbd7771 ]

Warn in the case it is called with cpu == -1. This does not appear
to happen anywhere.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Reviewed-by: Paul E. McKenney <paulmck@kernel.org>
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/kernel/workqueue.c b/kernel/workqueue.c
index 8c7bafbee1b13753d6730d442cedc4e3e725451c..a1665c2e04b463c117870c62dca61cbe1a146b07 100644 (file)
--- a/kernel/workqueue.c
+++ b/kernel/workqueue.c
@@ -6458,6 +6458,8 @@ notrace void wq_watchdog_touch(int cpu)
 {
        if (cpu >= 0)
                per_cpu(wq_watchdog_touched_cpu, cpu) = jiffies;
+       else
+               WARN_ONCE(1, "%s should be called with valid CPU", __func__);
 
        wq_watchdog_touched = jiffies;
 }