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authorThomas Gleixner <tglx@linutronix.de>2013-04-25 20:31:50 +0000
committerThomas Gleixner <tglx@linutronix.de>2013-05-16 11:09:18 +0200
commit03e13cf5ee60584fe0c831682c67212effb7fca4 (patch)
treeb40a9a0a88a675e4511ad6b6c0bf072b6a1ef9f4 /include
parent45cb8e01b2ecef1c2afb18333e95793fa1a90281 (diff)
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')
-rw-r--r--include/linux/clockchips.h1
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,