From: Robert Love <rml@tech9.net>
To: Roger Larsson <roger.larsson@skelleftea.mail.telia.com>
Cc: Christian Vogel <vogel@skunk.physik.uni-erlangen.de>,
linux-kernel@vger.kernel.org
Subject: Re: linux-2.6.0-test2: Never using pm_idle (CPU wasting power)
Date: 31 Jul 2003 16:26:11 -0700 [thread overview]
Message-ID: <1059693971.786.4.camel@localhost> (raw)
In-Reply-To: <1059692337.931.325.camel@localhost>
On Thu, 2003-07-31 at 15:58, Robert Love wrote:
> On Thu, 2003-07-31 at 15:45, Roger Larsson wrote:
>
> > This smells preemptive kernel, correct?
>
> Doesn't look like anything specific to kernel preemption to me.
Oh I really misgrok'ed this.
Yah, kernel preemption catches the reschedule off of the interrupt and
thus this is never true (always zero). The "never zero" thing confused
me, sorry.
Moving the stuff into the while loop is one option.
Robert Love
next prev parent reply other threads:[~2003-07-31 23:21 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-07-31 13:07 linux-2.6.0-test2: Never using pm_idle (CPU wasting power) Christian Vogel
2003-07-31 14:12 ` Charles Lepple
2003-07-31 14:44 ` Christian Vogel
2003-07-31 22:45 ` Roger Larsson
2003-07-31 22:58 ` Robert Love
2003-07-31 23:26 ` Robert Love [this message]
2003-07-31 22:59 ` Andrew Morton
2003-08-01 9:18 ` Christian Vogel
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