linux-kernel - Re: [PATCH] sched/idle: Drop !! while calculating 'broadcast'

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Message-ID: <CAKohponybcMZ36EM+FQTNU3_WVHoKC+PWDpnd_4qKSzqrPb2=g@mail.gmail.com>
Date:	Tue, 24 Jun 2014 18:05:04 +0530
From:	Viresh Kumar <viresh.kumar@...aro.org>
To:	Mike Galbraith <umgwanakikbuti@...il.com>
Cc:	Peter Zijlstra <peterz@...radead.org>,
	Ingo Molnar <mingo@...hat.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Lists linaro-kernel <linaro-kernel@...ts.linaro.org>
Subject: Re: [PATCH] sched/idle: Drop !! while calculating 'broadcast'

On 24 June 2014 17:48, Mike Galbraith <umgwanakikbuti@...il.com> wrote:
> x86_64 gcc-4.8.3 made 1 less instruction, a shift.

I thought about doing this test for x86 as well, and over-estimated
compilers intelligence. I must have done it :)

And finally this patch is worth more than I originally estimated :)
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