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Date: Mon, 24 Nov 2014 14:23:12 +0100 From: Vincent Guittot <vincent.guittot@...aro.org> To: Wanpeng Li <kernellwp@...il.com> Cc: Peter Zijlstra <peterz@...radead.org>, Ingo Molnar <mingo@...nel.org>, linux-kernel <linux-kernel@...r.kernel.org>, Russell King - ARM Linux <linux@....linux.org.uk>, LAK <linux-arm-kernel@...ts.infradead.org>, Preeti U Murthy <preeti@...ux.vnet.ibm.com>, Morten Rasmussen <Morten.Rasmussen@....com>, Mike Galbraith <efault@....de>, Nicolas Pitre <nicolas.pitre@...aro.org>, "linaro-kernel@...ts.linaro.org" <linaro-kernel@...ts.linaro.org>, Daniel Lezcano <daniel.lezcano@...aro.org> Subject: Re: [PATCH v2 09/11] sched: test the cpu's capacity in wake affine On 24 November 2014 at 01:34, Wanpeng Li <kernellwp@...il.com> wrote: > Hi Vincent, > On 5/28/14, 7:15 PM, Vincent Guittot wrote: >> >> On 28 May 2014 12:58, Peter Zijlstra <peterz@...radead.org> wrote: >>> >>> On Fri, May 23, 2014 at 05:53:03PM +0200, Vincent Guittot wrote: > > [snip] >>> >>> Now I'm only struggling to understand the rationale for this, its got >>> LLC in there somewhere, but I'm failing to comprehend. >> >> Ah.. i have probably overestimated the fact that wake_affine was only >> done at MC or SMT level but after reading more deeply the glags >> configuration of all sched_domain level , my assumption is not true. > > > What's level the wake_affine should happen? In 1st version of this patch, it was proposed to test the cpu_capacity of idle CPU only if they were sharing their cache Regards, Vincent > > Regards, > Wanpeng Li > >> So I need to test sd flag to make sure that their share their cache at >> this level >> -- >> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in >> the body of a message to majordomo@...r.kernel.org >> More majordomo info at http://vger.kernel.org/majordomo-info.html >> Please read the FAQ at http://www.tux.org/lkml/ > > -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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