mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-19 02:34:01 +08:00
318b1dedcd
Fix header dependency. Suggested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: Elena Reshetova <elena.reshetova@intel.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/1487855374-21993-1-git-send-email-elena.reshetova@intel.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
43 lines
1.2 KiB
C
43 lines
1.2 KiB
C
#ifndef _LINUX_REFCOUNT_H
|
|
#define _LINUX_REFCOUNT_H
|
|
|
|
#include <linux/atomic.h>
|
|
#include <linux/mutex.h>
|
|
#include <linux/spinlock.h>
|
|
#include <linux/kernel.h>
|
|
|
|
typedef struct refcount_struct {
|
|
atomic_t refs;
|
|
} refcount_t;
|
|
|
|
#define REFCOUNT_INIT(n) { .refs = ATOMIC_INIT(n), }
|
|
|
|
static inline void refcount_set(refcount_t *r, unsigned int n)
|
|
{
|
|
atomic_set(&r->refs, n);
|
|
}
|
|
|
|
static inline unsigned int refcount_read(const refcount_t *r)
|
|
{
|
|
return atomic_read(&r->refs);
|
|
}
|
|
|
|
extern __must_check bool refcount_add_not_zero(unsigned int i, refcount_t *r);
|
|
extern void refcount_add(unsigned int i, refcount_t *r);
|
|
|
|
extern __must_check bool refcount_inc_not_zero(refcount_t *r);
|
|
extern void refcount_inc(refcount_t *r);
|
|
|
|
extern __must_check bool refcount_sub_and_test(unsigned int i, refcount_t *r);
|
|
extern void refcount_sub(unsigned int i, refcount_t *r);
|
|
|
|
extern __must_check bool refcount_dec_and_test(refcount_t *r);
|
|
extern void refcount_dec(refcount_t *r);
|
|
|
|
extern __must_check bool refcount_dec_if_one(refcount_t *r);
|
|
extern __must_check bool refcount_dec_not_one(refcount_t *r);
|
|
extern __must_check bool refcount_dec_and_mutex_lock(refcount_t *r, struct mutex *lock);
|
|
extern __must_check bool refcount_dec_and_lock(refcount_t *r, spinlock_t *lock);
|
|
|
|
#endif /* _LINUX_REFCOUNT_H */
|