blob: c49e33e24edd4140a42fc08ae0032127f90aa0d2 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
|
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_POWERPC_QSPINLOCK_H
#define _ASM_POWERPC_QSPINLOCK_H
#include <asm-generic/qspinlock_types.h>
#define _Q_PENDING_LOOPS (1 << 9) /* not tuned */
#define smp_mb__after_spinlock() smp_mb()
static __always_inline int queued_spin_is_locked(struct qspinlock *lock)
{
/*
* This barrier was added to simple spinlocks by commit 51d7d5205d338,
* but it should now be possible to remove it, asm arm64 has done with
* commit c6f5d02b6a0f.
*/
smp_mb();
return atomic_read(&lock->val);
}
#define queued_spin_is_locked queued_spin_is_locked
#include <asm-generic/qspinlock.h>
#endif /* _ASM_POWERPC_QSPINLOCK_H */
|
