Messages in this thread | | | Date | Mon, 22 Sep 2014 09:55:18 +0100 | From | Sudeep Holla <> | Subject | Re: [PATCH v4 04/11] drivers: base: support cpu cache information interface to userspace via sysfs |
| |
Hi Stephen,
On 19/09/14 23:24, Stephen Boyd wrote: > On 09/03/14 10:00, 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. >> >> Signed-off-by: Sudeep Holla <sudeep.holla@arm.com> >> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> >> Cc: Stephen Boyd <sboyd@codeaurora.org> >> 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 <sboyd@codeaurora.org> > Tested-by: Stephen Boyd <sboyd@codeaurora.org> >
Thanks for all the reviews and testings of the series.
Regards, Sudeep
| |