From bf52b1ac6ab41a060511d56d0f2da12f3a2486db Mon Sep 17 00:00:00 2001
From: Tejun Heo <tj@kernel.org>
Date: Thu, 8 Feb 2024 14:14:16 -1000
Subject: async: Use a dedicated unbound workqueue with raised min_active
Async can schedule a number of interdependent work items. However, since
5797b1c18919 ("workqueue: Implement system-wide nr_active enforcement for
unbound workqueues"), unbound workqueues have separate min_active which sets
the number of interdependent work items that can be handled. This default
value is 8 which isn't sufficient for async and can lead to stalls during
resume from suspend in some cases.
Let's use a dedicated unbound workqueue with raised min_active.
Link: http://lkml.kernel.org/r/708a65cc-79ec-44a6-8454-a93d0f3114c3@samsung.com
Reported-by: Marek Szyprowski <m.szyprowski@samsung.com>
Cc: Rafael J. Wysocki <rjw@rjwysocki.net>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
---
init/main.c | 1 +
1 file changed, 1 insertion(+)
(limited to 'init/main.c')
diff --git a/init/main.c b/init/main.c
index e24b0780fdff..685db36c999f 100644
--- a/init/main.c
+++ b/init/main.c
@@ -1545,6 +1545,7 @@ static noinline void __init kernel_init_freeable(void)
sched_init_smp();
workqueue_init_topology();
+ async_init();
padata_init();
page_alloc_init_late();
--
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