diff options
| author | Preeti U Murthy <preeti@linux.vnet.ibm.com> | 2014-02-07 13:36:06 +0530 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2015-01-21 21:57:00 +0000 |
| commit | 05c267173970d7d720eb93e21b779a7002e08eb1 (patch) | |
| tree | f31e1a917cae3fe149f2ccbcf208fd04566ff560 /include | |
| parent | 32f45d57f49dc2a130b332954a4fa42dd52fb666 (diff) | |
time: Change the return type of clockevents_notify() to integer
The broadcast framework can potentially be made use of by archs which do not have an
external clock device as well. Then, it is required that one of the CPUs need
to handle the broadcasting of wakeup IPIs to the CPUs in deep idle. As a
result its local timers should remain functional all the time. For such
a CPU, the BROADCAST_ENTER notification has to fail indicating that its clock
device cannot be shutdown. To make way for this support, change the return
type of tick_broadcast_oneshot_control() and hence clockevents_notify() to
indicate such scenarios.
Signed-off-by: Preeti U Murthy <preeti@linux.vnet.ibm.com>
Cc: deepthi@linux.vnet.ibm.com
Cc: paulmck@linux.vnet.ibm.com
Cc: fweisbec@gmail.com
Cc: paulus@samba.org
Cc: srivatsa.bhat@linux.vnet.ibm.com
Cc: svaidy@linux.vnet.ibm.com
Cc: peterz@infradead.org
Cc: benh@kernel.crashing.org
Cc: rafael.j.wysocki@intel.com
Cc: linuxppc-dev@lists.ozlabs.org
Link: http://lkml.kernel.org/r/20140207080606.17187.78306.stgit@preeti.in.ibm.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
(cherry picked from commit da7e6f45c34d39186b72328bacc4dd86bff60e0a)
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/clockchips.h | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/include/linux/clockchips.h b/include/linux/clockchips.h index 2f498f66c1bb..3390db716ee3 100644 --- a/include/linux/clockchips.h +++ b/include/linux/clockchips.h @@ -181,9 +181,9 @@ static inline int tick_check_broadcast_expired(void) { return 0; } #endif #ifdef CONFIG_GENERIC_CLOCKEVENTS -extern void clockevents_notify(unsigned long reason, void *arg); +extern int clockevents_notify(unsigned long reason, void *arg); #else -static inline void clockevents_notify(unsigned long reason, void *arg) {} +static inline int clockevents_notify(unsigned long reason, void *arg) { return 0; } #endif #else /* CONFIG_GENERIC_CLOCKEVENTS_BUILD */ @@ -191,7 +191,7 @@ static inline void clockevents_notify(unsigned long reason, void *arg) {} static inline void clockevents_suspend(void) {} static inline void clockevents_resume(void) {} -static inline void clockevents_notify(unsigned long reason, void *arg) {} +static inline int clockevents_notify(unsigned long reason, void *arg) { return 0; } static inline int tick_check_broadcast_expired(void) { return 0; } #endif |