From: sudeep.holla@arm•com (Sudeep Holla)
To: linux-arm-kernel@lists•infradead.org
Subject: [PATCH v4 04/11] drivers: base: support cpu cache information interface to userspace via sysfs
Date: Wed, 17 Sep 2014 18:25:10 +0100 [thread overview]
Message-ID: <5419C3F6.4050607@arm.com> (raw)
In-Reply-To: <1409763617-17074-5-git-send-email-sudeep.holla@arm.com>
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
next prev parent reply other threads:[~2014-09-17 17:25 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-09-03 17:00 [PATCH v4 00/11] drivers: cacheinfo support Sudeep Holla
2014-09-03 17:00 ` [PATCH v4 04/11] drivers: base: support cpu cache information interface to userspace via sysfs Sudeep Holla
2014-09-17 17:25 ` Sudeep Holla [this message]
2014-09-17 19:00 ` Greg Kroah-Hartman
2014-09-24 6:35 ` Greg Kroah-Hartman
2014-09-30 13:53 ` Sudeep Holla
2014-09-19 22:24 ` Stephen Boyd
2014-09-22 8:55 ` Sudeep Holla
2014-09-03 17:00 ` [PATCH v4 09/11] ARM64: kernel: add support for cpu cache information Sudeep Holla
2014-09-10 16:41 ` Will Deacon
2014-09-10 17:21 ` Sudeep Holla
2014-09-03 17:00 ` [PATCH v4 10/11] ARM: " Sudeep Holla
2014-09-19 22:25 ` Stephen Boyd
2014-09-03 17:00 ` [PATCH v4 11/11] ARM: kernel: add outer cache support for cacheinfo implementation Sudeep Holla
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