linux-kernel - Re: [PATCH v2] locking/percpu-rwsem: Optimize readers and reduce global impact

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Message-ID: <CAH7ZN-yeRdqhOy_ZL2o4M-XmZBZh43Ssk5w_GjtvZHaPZhFuuQ@mail.gmail.com>
Date:   Fri, 26 Aug 2016 09:47:13 -0700
From:   Dmitry Shmidt <dimitrysh@...gle.com>
To:     Tejun Heo <tj@...nel.org>, Peter Zijlstra <peterz@...radead.org>
Cc:     John Stultz <john.stultz@...aro.org>,
        Oleg Nesterov <oleg@...hat.com>,
        Om Dhyade <odhyade@...eaurora.org>,
        "Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
        Ingo Molnar <mingo@...nel.org>,
        lkml <linux-kernel@...r.kernel.org>,
        Rom Lemarchand <romlem@...gle.com>,
        Colin Cross <ccross@...gle.com>, Todd Kjos <tkjos@...gle.com>
Subject: Re: [PATCH v2] locking/percpu-rwsem: Optimize readers and reduce
 global impact

On Fri, Aug 26, 2016 at 5:51 AM, Tejun Heo <tj@...nel.org> wrote:
> Hello, John.
>
> On Thu, Aug 25, 2016 at 07:14:07PM -0700, John Stultz wrote:
>> Hey! Good news. This patch along with Peter's locking changes pushes
>> the latencies down to an apparently acceptable level!
>
> Ah, that's good to hear.  Please feel free to ping me if you guys
> wanna talk about cgroup usage in android.

Thanks a lot for all your help resolving this issue!

> Thanks!
>
> --
> tejun