Messages in this thread | | | Date | Wed, 17 Sep 2014 18:25:10 +0100 | From | Sudeep Holla <> | Subject | Re: [PATCH v4 04/11] drivers: base: support cpu cache information interface to userspace via sysfs |
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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
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