1 files changed, 0 insertions, 40 deletions

diff --git a/arch/x86_64/lib/dec_and_lock.c b/arch/x86_64/lib/dec_and_lock.c
deleted file mode 100644
index ab43394dc775..000000000000
--- a/arch/x86_64/lib/dec_and_lock.c
+++ /dev/null
@@ -1,40 +0,0 @@
-/*
- * x86 version of "atomic_dec_and_lock()" using
- * the atomic "cmpxchg" instruction.
- *
- * (For CPU's lacking cmpxchg, we use the slow
- * generic version, and this one never even gets
- * compiled).
- */
-
-#include <linux/spinlock.h>
-#include <asm/atomic.h>
-
-int _atomic_dec_and_lock(atomic_t *atomic, spinlock_t *lock)
-{
-        int counter;
-        int newcount;
-
-repeat:
-        counter = atomic_read(atomic);
-        newcount = counter-1;
-
-        if (!newcount)
-                goto slow_path;
-
-        asm volatile("lock; cmpxchgl %1,%2"
-                :"=a" (newcount)
-                :"r" (newcount), "m" (atomic->counter), "0" (counter));
-
-        /* If the above failed, "eax" will have changed */
-        if (newcount != counter)
-                goto repeat;
-        return 0;
-
-slow_path:
-        spin_lock(lock);
-        if (atomic_dec_and_test(atomic))
-                return 1;
-        spin_unlock(lock);
-        return 0;
-}