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| author | Nick Piggin <nickpiggin@yahoo.com.au> | 2006-01-08 01:02:19 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-01-08 20:13:48 -0800 |
| commit | 095975da26dba21698582e91e96be10f7417333f (patch) | |
| tree | ce1ffac556d394ef56a18faa97d38f79b07f31e2 /kernel | |
| parent | a57004e1afb6ee03c509f1b1ec74a000682ab93b (diff) | |
| download | op-kernel-dev-095975da26dba21698582e91e96be10f7417333f.zip op-kernel-dev-095975da26dba21698582e91e96be10f7417333f.tar.gz | |
[PATCH] rcu file: use atomic primitives
Use atomic_inc_not_zero for rcu files instead of special case rcuref.
Signed-off-by: Nick Piggin <npiggin@suse.de>
Cc: "Paul E. McKenney" <paulmck@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/rcupdate.c | 14 | ||||
| -rw-r--r-- | kernel/rcutorture.c | 1 |
2 files changed, 0 insertions, 15 deletions
diff --git a/kernel/rcupdate.c b/kernel/rcupdate.c index 0a669bd..30b0bba 100644 --- a/kernel/rcupdate.c +++ b/kernel/rcupdate.c @@ -46,7 +46,6 @@ #include <linux/percpu.h> #include <linux/notifier.h> #include <linux/rcupdate.h> -#include <linux/rcuref.h> #include <linux/cpu.h> /* Definition for rcupdate control block. */ @@ -74,19 +73,6 @@ DEFINE_PER_CPU(struct rcu_data, rcu_bh_data) = { 0L }; static DEFINE_PER_CPU(struct tasklet_struct, rcu_tasklet) = {NULL}; static int maxbatch = 10000; -#ifndef __HAVE_ARCH_CMPXCHG -/* - * We use an array of spinlocks for the rcurefs -- similar to ones in sparc - * 32 bit atomic_t implementations, and a hash function similar to that - * for our refcounting needs. - * Can't help multiprocessors which donot have cmpxchg :( - */ - -spinlock_t __rcuref_hash[RCUREF_HASH_SIZE] = { - [0 ... (RCUREF_HASH_SIZE-1)] = SPIN_LOCK_UNLOCKED -}; -#endif - /** * call_rcu - Queue an RCU callback for invocation after a grace period. * @head: structure to be used for queueing the RCU updates. diff --git a/kernel/rcutorture.c b/kernel/rcutorture.c index 36efe08..75174c8 100644 --- a/kernel/rcutorture.c +++ b/kernel/rcutorture.c @@ -39,7 +39,6 @@ #include <linux/moduleparam.h> #include <linux/percpu.h> #include <linux/notifier.h> -#include <linux/rcuref.h> #include <linux/cpu.h> #include <linux/random.h> #include <linux/delay.h> |
