From: Dave Martin <dave.martin@linaro.org>
Date: Wed, 13 Feb 2013 16:20:44 +0000 (+0000)
Subject: ARM: bL_switcher: Add query interface to discover CPU affinities
X-Git-Tag: v3.13-rc1~103^2~1^2~10
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d08e2e09042bd3f7ef66a35cb4bb92794ab26bb2;p=pandora-kernel.git

ARM: bL_switcher: Add query interface to discover CPU affinities

When the switcher is active, there is no straightforward way to
figure out which logical CPU a given physical CPU maps to.

This patch provides a function
bL_switcher_get_logical_index(mpidr), which is analogous to
get_logical_index().

This function returns the logical CPU on which the specified
physical CPU is grouped (or -EINVAL if unknown).
If the switcher is inactive or not present, -EUNATCH is returned instead.

Signed-off-by: Dave Martin <dave.martin@linaro.org>
Signed-off-by: Nicolas Pitre <nico@linaro.org>
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