alpha: Provide atomic_{or,xor,and}

Implement atomic logic ops -- atomic_{or,xor,and}.

These will replace the atomic_{set,clear}_mask functions that are
available on some archs.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

diff --git a/arch/alpha/include/asm/atomic.h b/arch/alpha/include/asm/atomic.h
index 8f8eafb..0eff853 100644 (file)
--- a/arch/alpha/include/asm/atomic.h
+++ b/arch/alpha/include/asm/atomic.h
@@ -29,13 +29,13 @@
  * branch back to restart the operation.
  */
 
-#define ATOMIC_OP(op)                                                  \
+#define ATOMIC_OP(op, asm_op)                                          \
 static __inline__ void atomic_##op(int i, atomic_t * v)                        \
 {                                                                      \
        unsigned long temp;                                             \
        __asm__ __volatile__(                                           \
        "1:     ldl_l %0,%1\n"                                          \
-       "       " #op "l %0,%2,%0\n"                                    \
+       "       " #asm_op " %0,%2,%0\n"                                 \
        "       stl_c %0,%1\n"                                          \
        "       beq %0,2f\n"                                            \
        ".subsection 2\n"                                               \
@@ -45,15 +45,15 @@ static __inline__ void atomic_##op(int i, atomic_t * v)                     \
        :"Ir" (i), "m" (v->counter));                                   \
 }                                                                      \
 
-#define ATOMIC_OP_RETURN(op)                                           \
+#define ATOMIC_OP_RETURN(op, asm_op)                                   \
 static inline int atomic_##op##_return(int i, atomic_t *v)             \
 {                                                                      \
        long temp, result;                                              \
        smp_mb();                                                       \
        __asm__ __volatile__(                                           \
        "1:     ldl_l %0,%1\n"                                          \
-       "       " #op "l %0,%3,%2\n"                                    \
-       "       " #op "l %0,%3,%0\n"                                    \
+       "       " #asm_op " %0,%3,%2\n"                                 \
+       "       " #asm_op " %0,%3,%0\n"                                 \
        "       stl_c %0,%1\n"                                          \
        "       beq %0,2f\n"                                            \
        ".subsection 2\n"                                               \
@@ -65,13 +65,13 @@ static inline int atomic_##op##_return(int i, atomic_t *v)          \
        return result;                                                  \
 }
 
-#define ATOMIC64_OP(op)                                                        \
+#define ATOMIC64_OP(op, asm_op)                                                \
 static __inline__ void atomic64_##op(long i, atomic64_t * v)           \
 {                                                                      \
        unsigned long temp;                                             \
        __asm__ __volatile__(                                           \
        "1:     ldq_l %0,%1\n"                                          \
-       "       " #op "q %0,%2,%0\n"                                    \
+       "       " #asm_op " %0,%2,%0\n"                                 \
        "       stq_c %0,%1\n"                                          \
        "       beq %0,2f\n"                                            \
        ".subsection 2\n"                                               \
@@ -81,15 +81,15 @@ static __inline__ void atomic64_##op(long i, atomic64_t * v)                \
        :"Ir" (i), "m" (v->counter));                                   \
 }                                                                      \
 
-#define ATOMIC64_OP_RETURN(op)                                         \
+#define ATOMIC64_OP_RETURN(op, asm_op)                                 \
 static __inline__ long atomic64_##op##_return(long i, atomic64_t * v)  \
 {                                                                      \
        long temp, result;                                              \
        smp_mb();                                                       \
        __asm__ __volatile__(                                           \
        "1:     ldq_l %0,%1\n"                                          \
-       "       " #op "q %0,%3,%2\n"                                    \
-       "       " #op "q %0,%3,%0\n"                                    \
+       "       " #asm_op " %0,%3,%2\n"                                 \
+       "       " #asm_op " %0,%3,%0\n"                                 \
        "       stq_c %0,%1\n"                                          \
        "       beq %0,2f\n"                                            \
        ".subsection 2\n"                                               \
@@ -101,15 +101,28 @@ static __inline__ long atomic64_##op##_return(long i, atomic64_t * v)     \
        return result;                                                  \
 }
 
-#define ATOMIC_OPS(opg)                                                        \
-       ATOMIC_OP(opg)                                                  \
-       ATOMIC_OP_RETURN(opg)                                           \
-       ATOMIC64_OP(opg)                                                \
-       ATOMIC64_OP_RETURN(opg)
+#define ATOMIC_OPS(op)                                                 \
+       ATOMIC_OP(op, op##l)                                            \
+       ATOMIC_OP_RETURN(op, op##l)                                     \
+       ATOMIC64_OP(op, op##q)                                          \
+       ATOMIC64_OP_RETURN(op, op##q)
 
 ATOMIC_OPS(add)
 ATOMIC_OPS(sub)
 
+#define CONFIG_ARCH_HAS_ATOMIC_OR
+#define atomic_andnot atomic_andnot
+#define atomic64_andnot atomic64_andnot
+
+ATOMIC_OP(and, and)
+ATOMIC_OP(andnot, bic)
+ATOMIC_OP(or, bis)
+ATOMIC_OP(xor, xor)
+ATOMIC64_OP(and, and)
+ATOMIC64_OP(andnot, bic)
+ATOMIC64_OP(or, bis)
+ATOMIC64_OP(xor, xor)
+
 #undef ATOMIC_OPS
 #undef ATOMIC64_OP_RETURN
 #undef ATOMIC64_OP