From: John Stultz <john.stultz@linaro.org>
Date: Wed, 10 Aug 2011 17:37:59 +0000 (-0700)
Subject: alarmtimers: Change alarmtimer functions to return alarmtimer_restart values
X-Git-Tag: v3.2-rc1~160^2~22
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4b41308d2d0398409620613c7eaaaf52c738b042;p=pandora-kernel.git

alarmtimers: Change alarmtimer functions to return alarmtimer_restart values

In order to properly fix the denial of service issue with high freq
periodic alarm timers, we need to push the re-arming logic into the
alarm timer handler, much as the hrtimer code does.

This patch introduces alarmtimer_restart enum and changes the
alarmtimer handler declarations to use it as a return value. Further,
to ease following changes, it extends the alarmtimer handler functions
to also take the time at expiration. No logic is yet modified.

CC: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: John Stultz <john.stultz@linaro.org>
---

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