linux-kernel - Re: [RFC PATCH 0/1] sched: Add a new API to find the prefer idlest cpu

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Message-ID: <1345217986.16533.1.camel@oc3660625478.ibm.com>
Date:	Fri, 17 Aug 2012 08:39:46 -0700
From:	Shirley Ma <mashirle@...ibm.com>
To:	linux-kernel@...r.kernel.org, mingo@...hat.com,
	peterz@...radead.org
Cc:	netdev@...r.kernel.org, "Michael S. Tsirkin" <mst@...hat.com>,
	vivek@...ibm.com, sri@...ibm.com, sri@...ibm.com
Subject: Re: [RFC PATCH 0/1] sched: Add a new API to find the prefer idlest
 cpu

Hello Ingo, Peter,

	Have you had chance to review below patch?

Thanks
Shirley

On Sun, 2012-07-22 at 23:57 -0700, Shirley Ma wrote:
> Introduce a new API to choose per-cpu thread from cgroup control cpuset
> (allowed) and preferred cpuset (local numa-node).
> 
> The receiving cpus of a networking device are not under cgroup controls.
> When such a networking device uses per-cpu thread model, the cpu which
> is chose to process the packets might not be part of cgroup cpusets
> without this API. On numa system, the preferred cpusets would help to
> reduce expensive cross memory access to/from the other node.
> 
> Signed-off-by: Shirley Ma <xma@...ibm.com>
> ---
> 
>  include/linux/sched.h |    2 ++
>  kernel/sched/fair.c   |   30 ++++++++++++++++++++++++++++++
>  2 files changed, 32 insertions(+), 0 deletions(-)
> 
> Thanks
> Shirley
> 
> 
> 
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