(cc'ing Ray Jui)
On Thu, Sep 27, 2012 at 01:20:36AM +0800, Lai Jiangshan wrote:
> rescuer is NOT_RUNNING, so there is no sense when it wakes up other workers,
> if there are available normal workers, they are already woken up when needed.
>
> Signed-off-by: Lai Jiangshan <la...@cn.fujitsu.com>
> ---
> kernel/workqueue.c | 8 --------
> 1 files changed, 0 insertions(+), 8 deletions(-)
>
> diff --git a/kernel/workqueue.c b/kernel/workqueue.c
> index c718b94..6c339bf 100644
> --- a/kernel/workqueue.c
> +++ b/kernel/workqueue.c
> @@ -2438,14 +2438,6 @@ repeat:
>
> process_scheduled_works(rescuer);
>
> - /*
> - * Leave this gcwq. If keep_working() is %true, notify a
> - * regular worker; otherwise, we end up with 0 concurrency
> - * and stalling the execution.
> - */
> - if (keep_working(pool))
> - wake_up_worker(pool);
> -
This was added by 7576958a9d5a4a6 ("workqueue: wake up a worker when a
rescuer is leaving a gcwq") to fix a bug reported by Ray Jui.
http://thread.gmane.org/gmane.linux.kernel/1098131
I'm fairly sure it was a valid bug report. I don't think the
depletion comes from concurrency management. It's just the lack of
chaining which could lead to stall. What am I missing here?
Thanks.
--
tejun
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
