From: Nathan Lynch <ntl@pobox.com>
Date: Sun, 27 Jul 2008 05:24:53 +0000 (+1000)
Subject: powerpc: Make core sibling information available to userspace
X-Git-Tag: v2.6.27-rc1~27^2~6
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=440a0857e32a05979fb01fc59ea454a723e80e4b;p=pandora-kernel.git

powerpc: Make core sibling information available to userspace

Implement the notion of "core siblings" for powerpc.  This makes
/sys/devices/system/cpu/cpu*/topology/core_siblings present sensible
values, indicating online CPUs which share an L2 cache.

BenH: Made cpu_to_l2cache() use of_find_node_by_phandle() instead
of IBM-specific open coded search

Signed-off-by: Nathan Lynch <ntl@pobox.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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