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authorPeter Zijlstra <peterz@infradead.org>2014-04-23 19:53:39 +0200
committerThomas Gleixner <tglx@linutronix.de>2015-07-27 14:06:22 +0200
commit5b4a2f0f91fd4a635f380f847254d23121972e7b (patch)
tree25e9a06f8d5dd9aa630456ea5fbf879abe508412
parent74b1bc505b058efdfef33e775df68d8324bbf8b8 (diff)
metag: 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>
-rw-r--r--arch/metag/include/asm/atomic_lnkget.h38
-rw-r--r--arch/metag/include/asm/atomic_lock1.h21
2 files changed, 17 insertions, 42 deletions
diff --git a/arch/metag/include/asm/atomic_lnkget.h b/arch/metag/include/asm/atomic_lnkget.h
index 948d8688643c..930c12cb8d37 100644
--- a/arch/metag/include/asm/atomic_lnkget.h
+++ b/arch/metag/include/asm/atomic_lnkget.h
@@ -74,42 +74,24 @@ static inline int atomic_##op##_return(int i, atomic_t *v) \
ATOMIC_OPS(add)
ATOMIC_OPS(sub)
+#define CONFIG_ARCH_HAS_ATOMIC_OR
+
+ATOMIC_OP(and)
+ATOMIC_OP(or)
+ATOMIC_OP(xor)
+
#undef ATOMIC_OPS
#undef ATOMIC_OP_RETURN
#undef ATOMIC_OP
-static inline void atomic_clear_mask(unsigned int mask, atomic_t *v)
+static inline __deprecated void atomic_clear_mask(unsigned int mask, atomic_t *v)
{
- int temp;
-
- asm volatile (
- "1: LNKGETD %0, [%1]\n"
- " AND %0, %0, %2\n"
- " LNKSETD [%1] %0\n"
- " DEFR %0, TXSTAT\n"
- " ANDT %0, %0, #HI(0x3f000000)\n"
- " CMPT %0, #HI(0x02000000)\n"
- " BNZ 1b\n"
- : "=&d" (temp)
- : "da" (&v->counter), "bd" (~mask)
- : "cc");
+ 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)
{
- int temp;
-
- asm volatile (
- "1: LNKGETD %0, [%1]\n"
- " OR %0, %0, %2\n"
- " LNKSETD [%1], %0\n"
- " DEFR %0, TXSTAT\n"
- " ANDT %0, %0, #HI(0x3f000000)\n"
- " CMPT %0, #HI(0x02000000)\n"
- " BNZ 1b\n"
- : "=&d" (temp)
- : "da" (&v->counter), "bd" (mask)
- : "cc");
+ atomic_or(mask, v);
}
static inline int atomic_cmpxchg(atomic_t *v, int old, int new)
diff --git a/arch/metag/include/asm/atomic_lock1.h b/arch/metag/include/asm/atomic_lock1.h
index f5d5898c1020..7d88725a85da 100644
--- a/arch/metag/include/asm/atomic_lock1.h
+++ b/arch/metag/include/asm/atomic_lock1.h
@@ -68,29 +68,22 @@ static inline int atomic_##op##_return(int i, atomic_t *v) \
ATOMIC_OPS(add, +=)
ATOMIC_OPS(sub, -=)
+ATOMIC_OP(and, &=)
+ATOMIC_OP(or, |=)
+ATOMIC_OP(xor, ^=)
#undef ATOMIC_OPS
#undef ATOMIC_OP_RETURN
#undef ATOMIC_OP
-static inline void atomic_clear_mask(unsigned int mask, atomic_t *v)
+static inline __deprecated void atomic_clear_mask(unsigned int mask, atomic_t *v)
{
- unsigned long flags;
-
- __global_lock1(flags);
- fence();
- v->counter &= ~mask;
- __global_unlock1(flags);
+ 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)
{
- unsigned long flags;
-
- __global_lock1(flags);
- fence();
- v->counter |= mask;
- __global_unlock1(flags);
+ atomic_or(mask, v);
}
static inline int atomic_cmpxchg(atomic_t *v, int old, int new)