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From: Samuel Thibault <samuel.thibault@ens-lyon.org>
To: Vincent Guittot <vincent.guittot@linaro.org>
Cc: linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org, linaro-dev@lists.linaro.org
Subject: Re: [RFC] Add Arm cpu topology definition
Date: Thu, 16 Jun 2011 10:55:47 +0200	[thread overview]
Message-ID: <20110616085547.GH4935@const.famille.thibault.fr> (raw)
In-Reply-To: <BANLkTinRGRUxKB=C_2Y2F93czWScEUo+Jw@mail.gmail.com>

Hello,

Vincent Guittot, le Thu 16 Jun 2011 10:49:13 +0200, a écrit :
> The affinity between Arm processors is defined in the MPIDR register.
> We can identify which processors are in the same cluster,
> and which ones have performance interdependency. The cpu topology
>  of an Arm platform can be set thanks to this register and this topology
> is then used by sched_mc and sched_smt.

Cool!  Could you check that the hwloc tool gets also gets this
information from userland through /sys, and/or send me the output of the
hwloc-gather-topology tool from hwloc so we can add an testcase for
this?

Samuel

  reply	other threads:[~2011-06-16  9:01 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-06-16  8:49 Vincent Guittot
2011-06-16  8:55 ` Samuel Thibault [this message]
2011-06-16  9:44   ` Vincent Guittot
2011-06-16  9:47     ` Samuel Thibault
2011-06-16  9:56       ` Vincent Guittot
2011-06-16 10:49 ` Daniel Lezcano
2011-06-16 12:05   ` Vincent Guittot
2011-06-16 11:48 ` Amit Kucheria
2011-06-16 12:30   ` Vincent Guittot
2011-06-16 11:55 ` Amit Kachhap
2011-06-16 12:10   ` Vincent Guittot
2011-06-16 13:24 ` Christian Robottom Reis
2011-06-16 13:48   ` Vincent Guittot
2011-06-16 19:40 ` Stephen Boyd
2011-06-17  6:54   ` Vincent Guittot
2011-06-21 20:36     ` Stephen Boyd
2011-06-22  9:17       ` Catalin Marinas
2011-06-22 10:19         ` Amit Kucheria
2011-06-16 21:13 ` Russell King - ARM Linux
2011-06-17  7:43   ` Vincent Guittot

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