From: "Chris Friesen" <cfriesen@nortel.com>
To: "Amit K. Arora" <aarora@linux.vnet.ibm.com>
Cc: linux-kernel@vger.kernel.org, vatsa@linux.vnet.ibm.com,
a.p.zijlstra@chello.nl, mingo@elte.hu
Subject: Re: [PATCH] sched: minor optimizations in wake_affine and select_task_rq_fair
Date: Mon, 29 Sep 2008 10:09:41 -0600 [thread overview]
Message-ID: <48E0FDC5.1080500@nortel.com> (raw)
In-Reply-To: <20080929100227.GA21129@amitarora.in.ibm.com>
Amit K. Arora wrote:
> Hello,
>
> Please consider this patch. It makes a few minor changes to
> sched_fair.c.
>
>
> sched: Minor optimizations in wake_affine and select_task_rq_fair
>
> This patch does following:
> o Reduces the number of arguments to wake_affine().
At what point is it cheaper to pass items as args rather than
recalculating them? If reducing the number of args is desirable, what
about removing the "this_cpu" and "prev_cpu" args and recalculating them
in wake_affine()?
Chris
next prev parent reply other threads:[~2008-09-29 16:09 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-09-29 10:02 [PATCH] sched: minor optimizations in wake_affine and select_task_rq_fair Amit K. Arora
2008-09-29 16:09 ` Chris Friesen [this message]
2008-09-30 7:01 ` Ingo Molnar
2008-09-30 11:40 ` Amit K. Arora
2008-09-30 7:03 ` Amit K. Arora
2008-09-30 11:45 ` [PATCH][resubmit] " Amit K. Arora
2008-09-30 13:26 ` Ingo Molnar
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