From: Rafael J. Wysocki <rjw@xxxxxxx>
Subject: PM / Runtime: Use alloc_workqueue() for creating PM workqueue
Although we need the PM workqueue to be freezable, we don't need it
to be singlethread. Also, the number of concurrent work items
running on a single CPU need not be constrained. For these reasons
use alloc_workqueue() directly, with suitable arguments, instead of
create_freezeable_workqueue(), to create the runtime PM workqueue.
Signed-off-by: Rafael J. Wysocki <rjw@xxxxxxx>
---
Tejun,
I'm not sure about that WQ_RESCUER thing. Can you please tell me what
exactly it is for?
Thanks,
Rafael
---
kernel/power/main.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
Index: linux-2.6/kernel/power/main.c
===================================================================
--- linux-2.6.orig/kernel/power/main.c
+++ linux-2.6/kernel/power/main.c
@@ -308,7 +308,7 @@ EXPORT_SYMBOL_GPL(pm_wq);
static int __init pm_start_workqueue(void)
{
- pm_wq = create_freezeable_workqueue("pm");
+ pm_wq = alloc_workqueue("pm", WQ_FREEZEABLE | WQ_RESCUER, 0);
return pm_wq ? 0 : -ENOMEM;
}
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