clockevents: Provide explicit broadcast oneshot control functions
authorThomas Gleixner <tglx@linutronix.de>
Fri, 3 Apr 2015 00:05:15 +0000 (02:05 +0200)
committerIngo Molnar <mingo@kernel.org>
Fri, 3 Apr 2015 06:44:33 +0000 (08:44 +0200)
commit1fe5d5c3c9ba0c4ade18e3325cba0ffe35127941
treeb07d74d6468aa0bf1e2b107bb82d62b9fe6638d4
parent89feddbfe7023ccfb4a6d7f5e3f5161d91b28b18
clockevents: Provide explicit broadcast oneshot control functions

clockevents_notify() is a leftover from the early design of the
clockevents facility. It's really not a notification mechanism,
it's a multiplex call. We are way better off to have explicit
calls instead of this monstrosity.

Split out the broadcast oneshot control into a separate function
and provide inline helpers. Switch clockevents_notify() over.
This will go away once all callers are converted.

This also gets rid of the nested locking of clockevents_lock and
broadcast_lock. The broadcast oneshot control functions do not
require clockevents_lock. Only the managing functions
(setup/shutdown/suspend/resume of the broadcast device require
clockevents_lock.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Cc: Alexandre Courbot <gnurou@gmail.com>
Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
Cc: Len Brown <lenb@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephen Warren <swarren@wwwdotorg.org>
Cc: Thierry Reding <thierry.reding@gmail.com>
Cc: Tony Lindgren <tony@atomide.com>
Link: http://lkml.kernel.org/r/13000649.8qZuEDV0OA@vostro.rjw.lan
Signed-off-by: Ingo Molnar <mingo@kernel.org>
include/linux/tick.h
kernel/time/clockevents.c
kernel/time/tick-broadcast.c
kernel/time/tick-internal.h