tree 47a6becae6272eb9c06e57a0a9d1698b8f1811c8
parent 6af7e471e5a7746b8024d70b4363d3dfe41d36b8
author John Stultz <john.stultz@linaro.org> 1312997879 -0700
committer John Stultz <john.stultz@linaro.org> 1313013320 -0700

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>