diff options
| author | Lachlan McIlroy <lachlan@redback.melbourne.sgi.com> | 2008-05-19 15:09:05 +1000 |
|---|---|---|
| committer | Lachlan McIlroy <lachlan@redback.melbourne.sgi.com> | 2008-05-19 15:09:05 +1000 |
| commit | c203e45f069af47ca7623e4dcd8c00bfba2722e4 (patch) | |
| tree | 4563115b6565dcfd97015c1c9366fb3d07cabf19 /include/linux/rcupdate.h | |
| parent | a94477da38e0b261a7ecea71f4c95a3bcd5be69c (diff) | |
| parent | b8291ad07a7f3b5b990900f0001198ac23ba893e (diff) | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 into for-linus
Diffstat (limited to 'include/linux/rcupdate.h')
| -rw-r--r-- | include/linux/rcupdate.h | 15 |
1 files changed, 0 insertions, 15 deletions
diff --git a/include/linux/rcupdate.h b/include/linux/rcupdate.h index 37a642c54871..d42dbec06083 100644 --- a/include/linux/rcupdate.h +++ b/include/linux/rcupdate.h @@ -33,8 +33,6 @@ #ifndef __LINUX_RCUPDATE_H #define __LINUX_RCUPDATE_H -#ifdef __KERNEL__ - #include <linux/cache.h> #include <linux/spinlock.h> #include <linux/threads.h> @@ -133,18 +131,6 @@ struct rcu_head { */ #define rcu_read_unlock_bh() __rcu_read_unlock_bh() -/* - * Prevent the compiler from merging or refetching accesses. The compiler - * is also forbidden from reordering successive instances of ACCESS_ONCE(), - * but only when the compiler is aware of some particular ordering. One way - * to make the compiler aware of ordering is to put the two invocations of - * ACCESS_ONCE() in different C statements. - * - * This macro does absolutely -nothing- to prevent the CPU from reordering, - * merging, or refetching absolutely anything at any time. - */ -#define ACCESS_ONCE(x) (*(volatile typeof(x) *)&(x)) - /** * rcu_dereference - fetch an RCU-protected pointer in an * RCU read-side critical section. This pointer may later @@ -245,5 +231,4 @@ extern long rcu_batches_completed_bh(void); extern void rcu_init(void); extern int rcu_needs_cpu(int cpu); -#endif /* __KERNEL__ */ #endif /* __LINUX_RCUPDATE_H */ |