From: Peter Zijlstra <peterz@infradead.org>
To: Lin Ming <ming.m.lin@intel.com>
Cc: Mike Galbraith <efault@gmx.de>,
lkml <linux-kernel@vger.kernel.org>,
"Zhang, Yanmin" <yanmin_zhang@linux.intel.com>
Subject: Re: [RFC PATCH] sched: Pass affine target cpu into wake_affine
Date: Mon, 04 Jan 2010 10:32:46 +0100 [thread overview]
Message-ID: <1262597566.6408.101.camel@laptop> (raw)
In-Reply-To: <1262596364.22471.110.camel@minggr.sh.intel.com>
On Mon, 2010-01-04 at 17:12 +0800, Lin Ming wrote:
> On Mon, 2010-01-04 at 17:25 +0800, Peter Zijlstra wrote:
> > On Mon, 2010-01-04 at 17:03 +0800, Lin Ming wrote:
> > > commit a03ecf08d7bbdd979d81163ea13d194fe21ad339
> > > Author: Lin Ming <ming.m.lin@intel.com>
> > > Date: Mon Jan 4 14:14:50 2010 +0800
> > >
> > > sched: Pass affine target cpu into wake_affine
> > >
> > > Since commit a1f84a3(sched: Check for an idle shared cache in select_task_rq_fair()),
> > > the affine target maybe adjusted to any idle cpu in cache sharing domains
> > > instead of current cpu.
> > > But wake_affine still use current cpu to calculate load which is wrong.
> > >
> > > This patch passes affine cpu into wake_affine.
> > >
> >
> > Does this at all help with that regression?
>
> No.
crap :/
The change does look sensible though.
next prev parent reply other threads:[~2010-01-04 9:33 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-01-04 9:03 [RFC PATCH] sched: Pass affine target cpu into wake_affine Lin Ming
2010-01-04 9:25 ` Peter Zijlstra
2010-01-04 9:12 ` Lin Ming
2010-01-04 9:32 ` Peter Zijlstra [this message]
2010-01-04 10:59 ` Mike Galbraith
2010-01-04 11:07 ` Lin Ming
2010-01-05 2:48 ` Lin Ming
2010-01-05 3:44 ` Mike Galbraith
2010-01-05 6:43 ` Mike Galbraith
2010-01-05 11:49 ` Mike Galbraith
2010-01-07 8:45 ` Lin Ming
2010-01-07 9:15 ` Peter Zijlstra
2010-01-07 9:33 ` Mike Galbraith
2010-01-07 13:14 ` Mike Galbraith
2010-01-08 2:38 ` Lin Ming
2010-01-08 3:34 ` Mike Galbraith
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