From: Peter Zijlstra <peterz@infradead.org>
To: Oleg Nesterov <oleg@redhat.com>
Cc: Kirill Tkhai <kirill.tkhai@gmail.com>,
linux-kernel@vger.kernel.org, Ingo Molnar <mingo@elte.hu>,
Thomas Gleixner <tglx@linutronix.de>,
Kirill Tkhai <tkhai@yandex.ru>
Subject: Re: [PATCH]sched: stop hrtick timer if running task is switching from fair scheduling class to another
Date: Wed, 04 Jan 2012 13:30:29 +0100 [thread overview]
Message-ID: <1325680229.2697.2.camel@twins> (raw)
In-Reply-To: <20111226154257.GA21445@redhat.com>
On Mon, 2011-12-26 at 16:42 +0100, Oleg Nesterov wrote:
>
> Peter, Ingo, does this code really work? SCHED_FEAT(HRTICK) == 0
> by default, and afaics you can't change it without CONFIG_SCHED_DEBUG.
>
>
No its broken. Maybe I should've removed it, but I've always been
meaning to fix it since SCHED_DEADLINE actually needs it, but alas.
-ENOTIME and no urgency need have conspired against it.
next prev parent reply other threads:[~2012-01-04 12:30 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-12-22 20:01 [PATCH]sched: stop hrtick timer if running task is switching from fair scheduling class to another Kirill Tkhai
2011-12-26 15:42 ` Oleg Nesterov
2012-01-04 12:30 ` Peter Zijlstra [this message]
2011-12-26 16:59 ` SCHED_RR && time_slice Oleg Nesterov
2011-12-29 16:43 ` Kirill Tkhai
2011-12-29 17:12 ` Oleg Nesterov
-- strict thread matches above, loose matches on Subject: below --
2011-12-17 0:09 [PATCH]sched: stop hrtick timer if running task is switching from fair scheduling class to another Kirill Tkhai
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