Re: [PATCH 6/6] cfq-iosched: Print sync-noidle information inblktrace messages

From: Tejun Heo
Date: Thu Dec 06 2012 - 14:28:06 EST


On Wed, Oct 03, 2012 at 04:57:01PM -0400, Vivek Goyal wrote:
> Currently we attach a character "S" or "A" to the cfqq<pid>, to represent
> whether queues is sync or async. Add one more character "N" to represent
> whether it is sync-noidle queue or sync queue. So now three different
> type of queues will look as follows.
>
> cfq1234S --> sync queus
> cfq1234SN --> sync noidle queue
> cfq1234A --> Async queue
>
> Previously S/A classification was being printed only if group scheduling
> was enabled. This patch also makes sure that this classification is
> displayed even if group idling is disabled.
>
> Signed-off-by: Vivek Goyal <vgoyal@xxxxxxxxxx>
> Acked-by: Jeff Moyer <jmoyer@xxxxxxxxxx>

Acked-by: Tejun Heo <tj@xxxxxxxxxx>

Thanks.

--
tejun
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