Re: [PATCH] sched_fair: test list head instead of list entry in throttle_cfs_rq()

From: Cong Wang
Date: Fri Jul 03 2015 - 12:09:24 EST


On Wed, Jun 24, 2015 at 12:41 PM, Cong Wang <xiyou.wangcong@xxxxxxxxx> wrote:
> According to the comments, we need to test if this is
> the first throttled task, however, list_empty() tests on
> the entry cfs_rq->throttled_list, not the head, this is wrong.
>
> This is a bug because we don't re-init the list entry after
> removing it from the list, so list_empty() could return false
> even if the list is really empty.
>
> Cc: Ingo Molnar <mingo@xxxxxxxxxx>
> Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
> Signed-off-by: Cong Wang <xiyou.wangcong@xxxxxxxxx>
> Signed-off-by: Cong Wang <cwang@xxxxxxxxxxxxxxxx>

ping.

What's the status of this patch?
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