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| author | Thomas Gleixner <tglx@linutronix.de> | 2013-04-25 20:31:50 +0000 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2013-05-16 11:09:18 +0200 |
| commit | 03e13cf5ee60584fe0c831682c67212effb7fca4 (patch) | |
| tree | b40a9a0a88a675e4511ad6b6c0bf072b6a1ef9f4 /include/linux/clockchips.h | |
| parent | 45cb8e01b2ecef1c2afb18333e95793fa1a90281 (diff) | |
| download | lwn-03e13cf5ee60584fe0c831682c67212effb7fca4.tar.gz lwn-03e13cf5ee60584fe0c831682c67212effb7fca4.zip | |
clockevents: Implement unbind functionality
Provide a sysfs interface to allow unbinding of clockevent
devices. The device is unbound if it is unused or if there is a
replacement device available. Unbinding of broadcast devices is not
supported as we don't want to foster that nonsense. If no replacement
device is available the unbind returns -EBUSY. Unbind is available
from the kernel and through sysfs, which is necessary to drop the
module refcount.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: John Stultz <john.stultz@linaro.org>
Cc: Magnus Damm <magnus.damm@gmail.com>
Link: http://lkml.kernel.org/r/20130425143436.499216659@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'include/linux/clockchips.h')
| -rw-r--r-- | include/linux/clockchips.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/clockchips.h b/include/linux/clockchips.h index ae1193bcf074..0857922e8ad0 100644 --- a/include/linux/clockchips.h +++ b/include/linux/clockchips.h @@ -141,6 +141,7 @@ static inline unsigned long div_sc(unsigned long ticks, unsigned long nsec, extern u64 clockevent_delta2ns(unsigned long latch, struct clock_event_device *evt); extern void clockevents_register_device(struct clock_event_device *dev); +extern int clockevents_unbind_device(struct clock_event_device *ced, int cpu); extern void clockevents_config(struct clock_event_device *dev, u32 freq); extern void clockevents_config_and_register(struct clock_event_device *dev, |