From: Nicolas Pitre <nicolas.pitre@linaro.org>
Date: Fri, 26 Oct 2012 06:36:17 +0000 (-0400)
Subject: ARM: bL_switcher: move to dedicated threads rather than workqueues
X-Git-Tag: v3.13-rc1~103^2~1^2~23^2~8
X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=71ce1deeff8f9341ae3b21983e9bdde28e8c96fe;p=pandora-kernel.git

ARM: bL_switcher: move to dedicated threads rather than workqueues

The workqueues are problematic as they may be contended.
They can't be scheduled with top priority either.  Also the optimization
in bL_switch_request() to skip the workqueue entirely when the target CPU
and the calling CPU were the same didn't allow for bL_switch_request() to
be called from atomic context, as might be the case for some cpufreq
drivers.

Let's move to dedicated kthreads instead.

Signed-off-by: Nicolas Pitre <nico@linaro.org>
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