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Diffstat (limited to 'arch/x86_64/atomic.h')
-rw-r--r--arch/x86_64/atomic.h10
1 files changed, 8 insertions, 2 deletions
diff --git a/arch/x86_64/atomic.h b/arch/x86_64/atomic.h
index 04f6c28d..3235db16 100644
--- a/arch/x86_64/atomic.h
+++ b/arch/x86_64/atomic.h
@@ -1,5 +1,5 @@
-#ifndef _INTERNAA_ATOMIC_H
-#define _INTERNAA_ATOMIC_H
+#ifndef _INTERNAL_ATOMIC_H
+#define _INTERNAL_ATOMIC_H
#include <stdint.h>
@@ -10,6 +10,12 @@ static inline int a_ctz_64(uint64_t x)
return r;
}
+static inline int a_ctz_l(unsigned long x)
+{
+ long r;
+ __asm__( "bsf %1,%0" : "=r"(r) : "r"(x) );
+ return r;
+}
static inline void a_and_64(volatile uint64_t *p, uint64_t v)
{