Commit 05bfb338 authored by Josh Poimboeuf's avatar Josh Poimboeuf Committed by Peter Zijlstra
Browse files

vhost: Fix livepatch timeouts in vhost_worker() 



Livepatch timeouts were reported due to busy vhost_worker() kthreads.
Now that cond_resched() can do livepatch task switching, use
cond_resched() in vhost_worker().  That's the better way to
conditionally call schedule() anyway.

Reported-by: default avatarSeth Forshee (DigitalOcean) <sforshee@kernel.org>
Signed-off-by: default avatarJosh Poimboeuf <jpoimboe@kernel.org>
Signed-off-by: default avatarPeter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: default avatarPetr Mladek <pmladek@suse.com>
Tested-by: default avatarSeth Forshee (DigitalOcean) <sforshee@kernel.org>
Link: https://lore.kernel.org/r/509f6ea6fe6505f0a75a66026ba531c765ef922f.1677257135.git.jpoimboe@kernel.org
parent e3ff7c60

drivers/vhost/vhost.c

+1 −2
Original line number Diff line number Diff line
@@ -363,8 +363,7 @@ static int vhost_worker(void *data) 
			kcov_remote_start_common(dev->kcov_handle);

			work->fn(work);

			kcov_remote_stop();

			if (need_resched())

				schedule();

			cond_resched();

		}

	}

	kthread_unuse_mm(dev->mm);