From: linus.walleij@linaro.org (Linus Walleij)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] arm: sched: stop sched_clock() during suspend
Date: Tue, 23 Oct 2012 00:28:32 +0200 [thread overview]
Message-ID: <CACRpkdY6ox+iJAGdSD=e7Yj55TzDWqOmLqu2fSRXvKJxqwfkhQ@mail.gmail.com> (raw)
In-Reply-To: <873916h1yi.fsf@deeprootsystems.com>
On Mon, Oct 22, 2012 at 7:05 PM, Kevin Hilman
<khilman@deeprootsystems.com> wrote:
> However, in light of RT throttling, this a correctness issue for process
> accounting, so I agree that this should be done for all platforms
> instead of providing an optional 'needs suspend' version of the API,
> even though it means printk times no longer reflect time spent
> suspended.
Maybe we should get printk() to use the best clocksource
instead.
The reason AFAICT that printk() is using sched_clock() is that
it's supposed to be fast. But now it seems that it's not going
to return what printk() needs anymore.
(Dragging Stultz & Gleixner into this...)
Yours,
Linus Walleij
next prev parent reply other threads:[~2012-10-22 22:28 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-10-22 11:54 [PATCH] arm: sched: stop sched_clock() during suspend Felipe Balbi
2012-10-22 12:07 ` Felipe Balbi
2012-10-22 17:05 ` Kevin Hilman
2012-10-22 22:28 ` Linus Walleij [this message]
2012-10-23 9:22 ` Russell King - ARM Linux
2012-10-23 14:17 ` Kevin Hilman
2012-10-23 16:03 ` Russell King - ARM Linux
2012-10-23 17:24 ` Felipe Balbi
2012-10-23 5:57 ` [PATCH v2] " Felipe Balbi
2012-10-23 14:14 ` Kevin Hilman
2012-10-23 10:11 ` [PATCH] " Linus Walleij
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