4 files changed, 99 insertions, 142 deletions
diff --git a/arch/x86/Kconfig.cpu b/arch/x86/Kconfig.cpu
index 4da3cdb9c1b1..cf3ff2c5cef2 100644
--- a/arch/x86/Kconfig.cpu
+++ b/arch/x86/Kconfig.cpu
@@ -398,7 +398,7 @@ config X86_TSC
 # generates cmov.
 config X86_CMOV
        def_bool y
-        depends on (MK7 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MVIAC3_2 || MVIAC7)
+        depends on (MK7 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MVIAC3_2 || MVIAC7 || X86_64)
 config X86_MINIMUM_CPU_FAMILY
        int
diff --git a/include/asm-x86/bitops.h b/include/asm-x86/bitops.h
index 1ae7b270a1ef..1b6f547cb6bd 100644
--- a/include/asm-x86/bitops.h
+++ b/include/asm-x86/bitops.h
@@ -67,7 +67,6 @@ static inline void __set_bit(int nr, volatile void *addr)
                     : "Ir" (nr) : "memory");
 }
 /**
 * clear_bit - Clears a bit in memory
 * @nr: Bit to clear
@@ -304,6 +303,104 @@ static int test_bit(int nr, const volatile unsigned long *addr);
 #undef BASE_ADDR
 #undef BIT_ADDR
+/**
+ * __ffs - find first set bit in word
+ * @word: The word to search
+ *
+ * Undefined if no bit exists, so code should check against 0 first.
+ */
+static inline unsigned long __ffs(unsigned long word)
+{
+        __asm__("bsf %1,%0"
+                :"=r" (word)
+                :"rm" (word));
+        return word;
+}
+/**
+ * ffz - find first zero bit in word
+ * @word: The word to search
+ *
+ * Undefined if no zero exists, so code should check against ~0UL first.
+ */
+static inline unsigned long ffz(unsigned long word)
+{
+        __asm__("bsf %1,%0"
+                :"=r" (word)
+                :"r" (~word));
+        return word;
+}
+/*
+ * __fls: find last set bit in word
+ * @word: The word to search
+ *
+ * Undefined if no zero exists, so code should check against ~0UL first.
+ */
+static inline unsigned long __fls(unsigned long word)
+{
+        __asm__("bsr %1,%0"
+                :"=r" (word)
+                :"rm" (word));
+        return word;
+}
+#ifdef __KERNEL__
+/**
+ * ffs - find first set bit in word
+ * @x: the word to search
+ *
+ * This is defined the same way as the libc and compiler builtin ffs
+ * routines, therefore differs in spirit from the other bitops.
+ *
+ * ffs(value) returns 0 if value is 0 or the position of the first
+ * set bit if value is nonzero. The first (least significant) bit
+ * is at position 1.
+ */
+static inline int ffs(int x)
+{
+        int r;
+#ifdef CONFIG_X86_CMOV
+        __asm__("bsfl %1,%0\n\t"
+                "cmovzl %2,%0"
+                : "=r" (r) : "rm" (x), "r" (-1));
+#else
+        __asm__("bsfl %1,%0\n\t"
+                "jnz 1f\n\t"
+                "movl $-1,%0\n"
+                "1:" : "=r" (r) : "rm" (x));
+#endif
+        return r + 1;
+}
+/**
+ * fls - find last set bit in word
+ * @x: the word to search
+ *
+ * This is defined in a similar way as the libc and compiler builtin
+ * ffs, but returns the position of the most significant set bit.
+ *
+ * fls(value) returns 0 if value is 0 or the position of the last
+ * set bit if value is nonzero. The last (most significant) bit is
+ * at position 32.
+ */
+static inline int fls(int x)
+{
+        int r;
+#ifdef CONFIG_X86_CMOV
+        __asm__("bsrl %1,%0\n\t"
+                "cmovzl %2,%0"
+                : "=&r" (r) : "rm" (x), "rm" (-1));
+#else
+        __asm__("bsrl %1,%0\n\t"
+                "jnz 1f\n\t"
+                "movl $-1,%0\n"
+                "1:" : "=r" (r) : "rm" (x));
+#endif
+        return r + 1;
+}
+#endif /* __KERNEL__ */
 #undef ADDR
 #ifdef CONFIG_X86_32
diff --git a/include/asm-x86/bitops_32.h b/include/asm-x86/bitops_32.h
index 7c9ed759afb2..3ed64b21b765 100644
--- a/include/asm-x86/bitops_32.h
+++ b/include/asm-x86/bitops_32.h
@@ -40,20 +40,6 @@ static inline int find_first_zero_bit(const unsigned long *addr, unsigned size)
 }
 /**
- * __ffs - find first bit in word.
- * @word: The word to search
- *
- * Undefined if no bit exists, so code should check against 0 first.
- */
-static inline unsigned long __ffs(unsigned long word)
-{
-        __asm__("bsfl %1,%0"
-                :"=r" (word)
-                :"rm" (word));
-        return word;
-}
-/**
 * find_first_bit - find the first set bit in a memory region
 * @addr: The address to start the search at
 * @size: The maximum size to search
@@ -74,60 +60,10 @@ static inline unsigned find_first_bit(const unsigned long *addr, unsigned size)
        return x;
 }
-/**
- * ffz - find first zero in word.
- * @word: The word to search
- *
- * Undefined if no zero exists, so code should check against ~0UL first.
- */
-static inline unsigned long ffz(unsigned long word)
-{
-        __asm__("bsfl %1,%0"
-                :"=r" (word)
-                :"r" (~word));
-        return word;
-}
 #ifdef __KERNEL__
 #include <asm-generic/bitops/sched.h>
-/**
- * ffs - find first bit set
- * @x: the word to search
- *
- * This is defined the same way as
- * the libc and compiler builtin ffs routines, therefore
- * differs in spirit from the above ffz() (man ffs).
- */
-static inline int ffs(int x)
-{
-        int r;
-        __asm__("bsfl %1,%0\n\t"
-                "jnz 1f\n\t"
-                "movl $-1,%0\n"
-                "1:" : "=r" (r) : "rm" (x));
-        return r+1;
-}
-/**
- * fls - find last bit set
- * @x: the word to search
- *
- * This is defined the same way as ffs().
- */
-static inline int fls(int x)
-{
-        int r;
-        __asm__("bsrl %1,%0\n\t"
-                "jnz 1f\n\t"
-                "movl $-1,%0\n"
-                "1:" : "=r" (r) : "rm" (x));
-        return r+1;
-}
 #include <asm-generic/bitops/hweight.h>
 #endif /* __KERNEL__ */
diff --git a/include/asm-x86/bitops_64.h b/include/asm-x86/bitops_64.h
index 7118ef2cc4ec..a5fbe7a02a3f 100644
--- a/include/asm-x86/bitops_64.h
+++ b/include/asm-x86/bitops_64.h
@@ -35,71 +35,11 @@ static inline void set_bit_string(unsigned long *bitmap, unsigned long i,
        }
 }
-/**
- * ffz - find first zero in word.
- * @word: The word to search
- *
- * Undefined if no zero exists, so code should check against ~0UL first.
- */
-static inline unsigned long ffz(unsigned long word)
-{
-        __asm__("bsfq %1,%0"
-                :"=r" (word)
-                :"r" (~word));
-        return word;
-}
-/**
- * __ffs - find first bit in word.
- * @word: The word to search
- *
- * Undefined if no bit exists, so code should check against 0 first.
- */
-static inline unsigned long __ffs(unsigned long word)
-{
-        __asm__("bsfq %1,%0"
-                :"=r" (word)
-                :"rm" (word));
-        return word;
-}
-/*
- * __fls: find last bit set.
- * @word: The word to search
- *
- * Undefined if no zero exists, so code should check against ~0UL first.
- */
-static inline unsigned long __fls(unsigned long word)
-{
-        __asm__("bsrq %1,%0"
-                :"=r" (word)
-                :"rm" (word));
-        return word;
-}
 #ifdef __KERNEL__
 #include <asm-generic/bitops/sched.h>
 /**
- * ffs - find first bit set
- * @x: the word to search
- *
- * This is defined the same way as
- * the libc and compiler builtin ffs routines, therefore
- * differs in spirit from the above ffz (man ffs).
- */
-static inline int ffs(int x)
-{
-        int r;
-        __asm__("bsfl %1,%0\n\t"
-                "cmovzl %2,%0" 
-                : "=r" (r) : "rm" (x), "r" (-1));
-        return r+1;
-}
-/**
 * fls64 - find last bit set in 64 bit word
 * @x: the word to search
 *
@@ -112,22 +52,6 @@ static inline int fls64(__u64 x)
        return __fls(x) + 1;
 }
-/**
- * fls - find last bit set
- * @x: the word to search
- *
- * This is defined the same way as ffs.
- */
-static inline int fls(int x)
-{
-        int r;
-        __asm__("bsrl %1,%0\n\t"
-                "cmovzl %2,%0"
-                : "=&r" (r) : "rm" (x), "rm" (-1));
-        return r+1;
-}
 #define ARCH_HAS_FAST_MULTIPLIER 1
 #include <asm-generic/bitops/hweight.h>