linux-kernel - Re: [RFC] sched_clock: Track monotonic raw clock

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Message-ID: <20140718193417.GG3935@laptop>
Date:	Fri, 18 Jul 2014 21:34:17 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	John Stultz <john.stultz@...aro.org>
Cc:	Pawel Moll <pawel.moll@....com>,
	Steven Rostedt <rostedt@...dmis.org>,
	Ingo Molnar <mingo@...hat.com>,
	Oleg Nesterov <oleg@...hat.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Mel Gorman <mgorman@...e.de>,
	Andy Lutomirski <luto@...capital.net>,
	Stephen Boyd <sboyd@...eaurora.org>,
	Baruch Siach <baruch@...s.co.il>,
	Thomas Gleixner <tglx@...utronix.de>,
	lkml <linux-kernel@...r.kernel.org>
Subject: Re: [RFC] sched_clock: Track monotonic raw clock

On Fri, Jul 18, 2014 at 12:25:48PM -0700, John Stultz wrote:
> Also, assuming we someday will merge the x86 sched_clock logic into
> the generic sched_clock code, we'll have to handle cases where they
> aren't the same.

I prefer that to not happen. I spend quite a bit of time and effort to
make the x86 code go fast, and that generic code doesn't look like fast
at all.

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