s390: 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.

Acked-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

diff --git a/arch/s390/include/asm/atomic.h b/arch/s390/include/asm/atomic.h
index adbe380..b3859d8 100644 (file)
--- a/arch/s390/include/asm/atomic.h
+++ b/arch/s390/include/asm/atomic.h
@@ -27,6 +27,7 @@
 #define __ATOMIC_OR    "lao"
 #define __ATOMIC_AND   "lan"
 #define __ATOMIC_ADD   "laa"
+#define __ATOMIC_XOR   "lax"
 #define __ATOMIC_BARRIER "bcr  14,0\n"
 
 #define __ATOMIC_LOOP(ptr, op_val, op_string, __barrier)               \
@@ -49,6 +50,7 @@
 #define __ATOMIC_OR    "or"
 #define __ATOMIC_AND   "nr"
 #define __ATOMIC_ADD   "ar"
+#define __ATOMIC_XOR   "xr"
 #define __ATOMIC_BARRIER "\n"
 
 #define __ATOMIC_LOOP(ptr, op_val, op_string, __barrier)               \
@@ -118,14 +120,26 @@ static inline void atomic_add(int i, atomic_t *v)
 #define atomic_dec_return(_v)          atomic_sub_return(1, _v)
 #define atomic_dec_and_test(_v)                (atomic_sub_return(1, _v) == 0)
 
-static inline void atomic_clear_mask(unsigned int mask, atomic_t *v)
+#define ATOMIC_OP(op, OP)                                              \
+static inline void atomic_##op(int i, atomic_t *v)                     \
+{                                                                      \
+       __ATOMIC_LOOP(v, i, __ATOMIC_##OP, __ATOMIC_NO_BARRIER);        \
+}
+
+ATOMIC_OP(and, AND)
+ATOMIC_OP(or, OR)
+ATOMIC_OP(xor, XOR)
+
+#undef ATOMIC_OP
+
+static inline __deprecated void atomic_clear_mask(unsigned int mask, atomic_t *v)
 {
-       __ATOMIC_LOOP(v, ~mask, __ATOMIC_AND, __ATOMIC_NO_BARRIER);
+       atomic_and(~mask, v);
 }
 
-static inline void atomic_set_mask(unsigned int mask, atomic_t *v)
+static inline __deprecated void atomic_set_mask(unsigned int mask, atomic_t *v)
 {
-       __ATOMIC_LOOP(v, mask, __ATOMIC_OR, __ATOMIC_NO_BARRIER);
+       atomic_or(mask, v);
 }
 
 #define atomic_xchg(v, new) (xchg(&((v)->counter), new))
@@ -167,6 +181,7 @@ static inline int __atomic_add_unless(atomic_t *v, int a, int u)
 #define __ATOMIC64_OR  "laog"
 #define __ATOMIC64_AND "lang"
 #define __ATOMIC64_ADD "laag"
+#define __ATOMIC64_XOR "laxg"
 #define __ATOMIC64_BARRIER "bcr        14,0\n"
 
 #define __ATOMIC64_LOOP(ptr, op_val, op_string, __barrier)             \
@@ -189,6 +204,7 @@ static inline int __atomic_add_unless(atomic_t *v, int a, int u)
 #define __ATOMIC64_OR  "ogr"
 #define __ATOMIC64_AND "ngr"
 #define __ATOMIC64_ADD "agr"
+#define __ATOMIC64_XOR "xgr"
 #define __ATOMIC64_BARRIER "\n"
 
 #define __ATOMIC64_LOOP(ptr, op_val, op_string, __barrier)             \
@@ -247,16 +263,6 @@ static inline void atomic64_add(long long i, atomic64_t *v)
        __ATOMIC64_LOOP(v, i, __ATOMIC64_ADD, __ATOMIC64_NO_BARRIER);
 }
 
-static inline void atomic64_clear_mask(unsigned long mask, atomic64_t *v)
-{
-       __ATOMIC64_LOOP(v, ~mask, __ATOMIC64_AND, __ATOMIC64_NO_BARRIER);
-}
-
-static inline void atomic64_set_mask(unsigned long mask, atomic64_t *v)
-{
-       __ATOMIC64_LOOP(v, mask, __ATOMIC64_OR, __ATOMIC64_NO_BARRIER);
-}
-
 #define atomic64_xchg(v, new) (xchg(&((v)->counter), new))
 
 static inline long long atomic64_cmpxchg(atomic64_t *v,
@@ -270,6 +276,19 @@ static inline long long atomic64_cmpxchg(atomic64_t *v,
        return old;
 }
 
+#define ATOMIC64_OP(op, OP)                                            \
+static inline void atomic64_##op(long i, atomic64_t *v)                        \
+{                                                                      \
+       __ATOMIC64_LOOP(v, i, __ATOMIC64_##OP, __ATOMIC64_NO_BARRIER);  \
+}
+
+#define CONFIG_ARCH_HAS_ATOMIC_OR
+
+ATOMIC64_OP(and, AND)
+ATOMIC64_OP(or, OR)
+ATOMIC64_OP(xor, XOR)
+
+#undef ATOMIC64_OP
 #undef __ATOMIC64_LOOP
 
 static inline int atomic64_add_unless(atomic64_t *v, long long i, long long u)