From mboxrd@z Thu Jan  1 00:00:00 1970
From: Sudeep Holla <sudeep.holla@arm.com>
Date: Wed, 17 Sep 2014 17:25:10 +0000
Subject: Re: [PATCH v4 04/11] drivers: base: support cpu cache information interface to userspace via sysfs
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To: LKML <linux-kernel@vger.kernel.org>
Cc: Sudeep Holla <Sudeep.Holla@arm.com>, Heiko Carstens <heiko.carstens@de.ibm.com>, Lorenzo Pieralisi <Lorenzo.Pieralisi@arm.com>, Greg Kroah-Hartman <gregkh@linuxfoundation.org>, Stephen Boyd <sboyd@codeaurora.org>, "linux-api@vger.kernel.org" <linux-api@vger.kernel.org>, "linux390@de.ibm.com" <linux390@de.ibm.com>, "linux-arm-kernel@lists.infradead.org" <linux-arm-kernel@lists.infradead.org>, "linux-ia64@vger.kernel.org" <linux-ia64@vger.kernel.org>, "linuxppc-dev@lists.ozlabs.org" <linuxppc-dev@lists.ozlabs.org>, "linux-s390@vger.kernel.org" <linux-s390@vger.kernel.org>, "x86@kernel.org" <x86@kernel.org>

Hi Greg,

On 03/09/14 18:00, Sudeep Holla wrote:
> From: Sudeep Holla <sudeep.holla@arm.com>
>
> 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.
>

Can you review the first 4 patches in this series please ?

Regards,
Sudeep