From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753407AbaIVIy7 (ORCPT ); Mon, 22 Sep 2014 04:54:59 -0400 Received: from service87.mimecast.com ([91.220.42.44]:43219 "EHLO service87.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752723AbaIVIy4 convert rfc822-to-8bit (ORCPT ); Mon, 22 Sep 2014 04:54:56 -0400 Message-ID: <541FE3F6.4070806@arm.com> Date: Mon, 22 Sep 2014 09:55:18 +0100 From: Sudeep Holla User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.1.1 MIME-Version: 1.0 To: Stephen Boyd , LKML CC: Sudeep Holla , Heiko Carstens , Lorenzo Pieralisi , Greg Kroah-Hartman , "linux-api@vger.kernel.org" , "linux390@de.ibm.com" , "linux-arm-kernel@lists.infradead.org" , "linux-ia64@vger.kernel.org" , "linuxppc-dev@lists.ozlabs.org" , "linux-s390@vger.kernel.org" , "x86@kernel.org" Subject: Re: [PATCH v4 04/11] drivers: base: support cpu cache information interface to userspace via sysfs References: <1409763617-17074-1-git-send-email-sudeep.holla@arm.com> <1409763617-17074-5-git-send-email-sudeep.holla@arm.com> <541CAD16.6030309@codeaurora.org> In-Reply-To: <541CAD16.6030309@codeaurora.org> X-OriginalArrivalTime: 22 Sep 2014 08:54:52.0478 (UTC) FILETIME=[DF9C45E0:01CFD642] X-MC-Unique: 114092209545303501 Content-Type: text/plain; charset=WINDOWS-1252; format=flowed Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Stephen, On 19/09/14 23:24, Stephen Boyd wrote: > On 09/03/14 10:00, Sudeep Holla wrote: >> From: Sudeep Holla >> >> This patch adds initial support for providing processor cache information >> to userspace through sysfs interface. This is based on already existing >> implementations(x86, ia64, s390 and powerpc) and hence the interface is >> intended to be fully compatible. >> >> The main purpose of this generic support is to avoid further code >> duplication to support new architectures and also to unify all the existing >> different implementations. >> >> This implementation maintains the hierarchy of cache objects which reflects >> the system's cache topology. Cache devices are instantiated as needed as >> CPUs come online. The cache information is replicated per-cpu even if they are >> shared. A per-cpu array of cache information maintained is used mainly for >> sysfs-related book keeping. >> >> It also implements the shared_cpu_map attribute, which is essential for >> enabling both kernel and user-space to discover the system's overall cache >> topology. >> >> This patch also add the missing ABI documentation for the cacheinfo sysfs >> interface already, which is well defined and widely used. >> >> Signed-off-by: Sudeep Holla >> Cc: Greg Kroah-Hartman >> Cc: Stephen Boyd >> Cc: linux-api@vger.kernel.org >> Cc: linux390@de.ibm.com >> Cc: linux-arm-kernel@lists.infradead.org >> Cc: linux-ia64@vger.kernel.org >> Cc: linuxppc-dev@lists.ozlabs.org >> Cc: linux-s390@vger.kernel.org >> Cc: x86@kernel.org >> > > Reviewed-by: Stephen Boyd > Tested-by: Stephen Boyd > Thanks for all the reviews and testings of the series. Regards, Sudeep