| Message ID | 20170515110348.30449-2-david@redhat.com |
|---|---|
| State | Accepted |
| Headers | show |
diff --git a/lib/asm-generic/spinlock.h b/lib/asm-generic/spinlock.h index 3141744..31fa510 100644 --- a/lib/asm-generic/spinlock.h +++ b/lib/asm-generic/spinlock.h @@ -1,4 +1,18 @@ #ifndef _ASM_GENERIC_SPINLOCK_H_ #define _ASM_GENERIC_SPINLOCK_H_ -#error need architecture specific asm/spinlock.h + +struct spinlock { + unsigned int v; +}; + +static inline void spin_lock(struct spinlock *lock) +{ + while (__sync_lock_test_and_set(&lock->v, 1)); +} + +static inline void spin_unlock(struct spinlock *lock) +{ + __sync_lock_release(&lock->v); +} + #endif
Let's provide a basic lock implementation that should work on most architectures. Signed-off-by: David Hildenbrand <david@redhat.com> --- lib/asm-generic/spinlock.h | 16 +++++++++++++++- 1 file changed, 15 insertions(+), 1 deletion(-)