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Date: Wed, 15 Mar 2017 18:02:51 +0000
From: Patrick Bellasi <patrick.bellasi@arm.com>
To: Steven Rostedt <rostedt@goodmis.org>
Cc: linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org,
        Viresh Kumar <viresh.kumar@linaro.org>,
        Vincent Guittot <vincent.guittot@linaro.org>,
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        Chris Redpath <chris.redpath@arm.com>, Ingo Molnar <mingo@redhat.com>,
        Peter Zijlstra <peterz@infradead.org>,
        "Rafael J . Wysocki" <rafael.j.wysocki@intel.com>
Subject: Re: [PATCH 2/6] cpufreq: schedutil: ignore the sugov kthread for
 frequencies selections
Message-ID: <20170315180251.GI18557@e110439-lin>
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On 06-Mar 09:35, Steven Rostedt wrote:
> On Thu,  2 Mar 2017 15:45:03 +0000
> Patrick Bellasi <patrick.bellasi@arm.com> wrote:
>  
> > @@ -287,6 +289,10 @@ static void sugov_update_shared(struct update_util_data *hook, u64 time,
> >  		goto done;
> >  	}
> >  
> > +	/* Skip updates generated by sugov kthreads */
> > +	if (curr == sg_policy->thread)
> 
> I think you want to put in an "unlikely()" around that statement. I'm
> assuming you don't care about he performance of scheduling in the sugov
> thread. At least tell gcc to optimize for the false path.

Right, good point! Will add it in the next posting! +1

Thanks!

-- 
#include <best/regards.h>

Patrick Bellasi