diff options
Diffstat (limited to 'include/linux/spinlock.h')
| -rw-r--r-- | include/linux/spinlock.h | 13 |
1 files changed, 0 insertions, 13 deletions
diff --git a/include/linux/spinlock.h b/include/linux/spinlock.h index 840281095933..4e8cce19b507 100644 --- a/include/linux/spinlock.h +++ b/include/linux/spinlock.h @@ -118,19 +118,6 @@ do { \ #endif /* - * Despite its name it doesn't necessarily has to be a full barrier. - * It should only guarantee that a STORE before the critical section - * can not be reordered with LOADs and STOREs inside this section. - * spin_lock() is the one-way barrier, this LOAD can not escape out - * of the region. So the default implementation simply ensures that - * a STORE can not move into the critical section, smp_wmb() should - * serialize it with another STORE done by spin_lock(). - */ -#ifndef smp_mb__before_spinlock -#define smp_mb__before_spinlock() smp_wmb() -#endif - -/* * This barrier must provide two things: * * - it must guarantee a STORE before the spin_lock() is ordered against a |