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Diffstat (limited to 'kernel/rcupdate.c')
-rw-r--r--kernel/rcupdate.c14
1 files changed, 0 insertions, 14 deletions
diff --git a/kernel/rcupdate.c b/kernel/rcupdate.c
index 0a669bd2f6d1..30b0bba03859 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.