linux-kernel - Re: [PATCH] sched: Optimize pick_next_task for idle_sched

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Message-ID: <20170120111649.2bac9881@gandalf.local.home>
Date:   Fri, 20 Jan 2017 11:16:49 -0500
From:   Steven Rostedt <rostedt@...dmis.org>
To:     Peter Zijlstra <peterz@...radead.org>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        Ingo Molnar <mingo@...nel.org>,
        Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH] sched: Optimize pick_next_task for idle_sched_class too

On Fri, 20 Jan 2017 11:14:25 -0500
Steven Rostedt <rostedt@...dmis.org> wrote:
> 
> > 
> > Could you give it a spin to see if anything comes apart?  
> 
> Yeah this works. You can add:
> 
> Reported-by: Steven Rostedt (VMware) <rostedt@...dmis.org>
> Tested-by: Steven Rostedt (VMware) <rostedt@...dmis.org>
> 

You can also add that my likely profiler on a normal box showed this
likely case go from 78% correct to 98% correct.

-- Steve