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clockevents: Add module refcount

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We want to be able to remove clockevent modules as well. Add a
refcount so we don't remove a module with an active clock event
device.

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/20130425143436.307435149@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Thomas Gleixner 2013-04-25 20:31:49 +00:00
parent 8c53daf63f
commit ccf33d6880
4 changed files with 11 additions and 0 deletions
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3
include/linux/clockchips.h
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@ -30,6 +30,7 @@ enum clock_event_nofitiers {
#include <linux/notifier.h>
struct clock_event_device;
struct module;
/* Clock event mode commands */
enum clock_event_mode {
@ -83,6 +84,7 @@ enum clock_event_mode {
* @irq: IRQ number (only for non CPU local devices)
* @cpumask: cpumask to indicate for which CPUs this device works
* @list: list head for the management code
* @owner: module reference
*/
struct clock_event_device {
void (*event_handler)(struct clock_event_device *);
@ -112,6 +114,7 @@ struct clock_event_device {
int irq;
const struct cpumask *cpumask;
struct list_head list;
struct module *owner;
} ____cacheline_aligned;
/*