From: Rik van Riel <riel@redhat.com>
Date: Fri, 24 Apr 2015 19:24:28 +0000 (-0400)
Subject: show nohz_full cpus in sysfs
X-Git-Tag: omap-for-v4.2/fixes-rc1^2~93^2~30
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6570a9a1ce3a1dd227a065fd8ad16778d827b753;p=pandora-kernel.git

show nohz_full cpus in sysfs

Currently there is no way to query which CPUs are in nohz_full
mode from userspace.

Export the CPU list running in nohz_full mode in sysfs,
specifically in the file /sys/devices/system/cpu/nohz_full

This can be used by system management tools like libvirt,
openstack, and others to ensure proper task placement.

Signed-off-by: Rik van Riel <riel@redhat.com>
Acked-by: Mike Galbraith <umgwanakikbuti@gmail.com>
Acked-by: Chris Metcalf <cmetcalf@ezchip.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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