linux-kernel - Re: [linux-sunxi] [PATCH 0/8] clocksource: sunxi: Timer fixes and cleanup

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Message-ID: <20130628104125.GG4319@lukather>
Date:	Fri, 28 Jun 2013 12:41:25 +0200
From:	Maxime Ripard <maxime.ripard@...e-electrons.com>
To:	Hans de Goede <hdegoede@...hat.com>
Cc:	linux-sunxi@...glegroups.com, John Stultz <john.stultz@...aro.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	Emilio Lopez <emilio@...pez.com.ar>, kevin@...winnertech.com,
	sunny@...winnertech.com, shuge@...winnertech.com
Subject: Re: [linux-sunxi] [PATCH 0/8] clocksource: sunxi: Timer fixes and
 cleanup

Hi Hans,

On Thu, Jun 27, 2013 at 08:13:56PM +0200, Hans de Goede wrote:
> >Siarhei however notes that even higher-end SoCs like the exynos5 have
> >similar performances with that regard. So I'm not sure we can do
> >something about it, except what is suggested in the above mail, which
> >looks rather unsafe.
> >
> >Anyway, like you said, we have no easy other solution, and we lacked
> >such support until now.
> >
> >So why not merge this code for now, and try to optimise it later if we
> >find it's needed.
> 
> That is fine with me, I just wanted to share that this has shown as
> a bottleneck in some benchmarks in case anyone has a clever idea to
> fix it ...

And you were right, since I wasn't aware of such discussion.

Thanks!
Maxime

-- 
Maxime Ripard, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com

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