Commit-ID: ddb7573ff68964e7b3b72eeb9cde1384c4c6ba83
Gitweb: http://git.kernel.org/tip/ddb7573ff68964e7b3b72eeb9cde1384c4c6ba83
Author: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
AuthorDate: Wed, 23 Apr 2014 19:50:20 +0200
Committer: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
CommitDate: Mon, 27 Jul 2015 14:06:23 +0200
mn10300: 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@xxxxxxxxxxxxx>
Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
---
arch/mn10300/include/asm/atomic.h | 57 +++++++--------------------------------
1 file changed, 10 insertions(+), 47 deletions(-)
diff --git a/arch/mn10300/include/asm/atomic.h b/arch/mn10300/include/asm/atomic.h
index 5be655e..03eea81 100644
--- a/arch/mn10300/include/asm/atomic.h
+++ b/arch/mn10300/include/asm/atomic.h
@@ -89,6 +89,12 @@ 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
@@ -134,31 +140,9 @@ static inline void atomic_dec(atomic_t *v)
*
* Atomically clears the bits set in mask from the memory word specified.
*/
-static inline void atomic_clear_mask(unsigned long mask, unsigned long *addr)
+static inline __deprecated void atomic_clear_mask(unsigned int mask, atomic_t *v)
{
-#ifdef CONFIG_SMP
- int status;
-
- asm volatile(
- "1: mov %3,(_AAR,%2) \n"
- " mov (_ADR,%2),%0 \n"
- " and %4,%0 \n"
- " mov %0,(_ADR,%2) \n"
- " mov (_ADR,%2),%0 \n" /* flush */
- " mov (_ASR,%2),%0 \n"
- " or %0,%0 \n"
- " bne 1b \n"
- : "=&r"(status), "=m"(*addr)
- : "a"(ATOMIC_OPS_BASE_ADDR), "r"(addr), "r"(~mask)
- : "memory", "cc");
-#else
- unsigned long flags;
-
- mask = ~mask;
- flags = arch_local_cli_save();
- *addr &= mask;
- arch_local_irq_restore(flags);
-#endif
+ atomic_and(~mask, v);
}
/**
@@ -168,30 +152,9 @@ static inline void atomic_clear_mask(unsigned long mask, unsigned long *addr)
*
* Atomically sets the bits set in mask from the memory word specified.
*/
-static inline void atomic_set_mask(unsigned long mask, unsigned long *addr)
+static inline __deprecated void atomic_set_mask(unsigned int mask, atomic_t *v)
{
-#ifdef CONFIG_SMP
- int status;
-
- asm volatile(
- "1: mov %3,(_AAR,%2) \n"
- " mov (_ADR,%2),%0 \n"
- " or %4,%0 \n"
- " mov %0,(_ADR,%2) \n"
- " mov (_ADR,%2),%0 \n" /* flush */
- " mov (_ASR,%2),%0 \n"
- " or %0,%0 \n"
- " bne 1b \n"
- : "=&r"(status), "=m"(*addr)
- : "a"(ATOMIC_OPS_BASE_ADDR), "r"(addr), "r"(mask)
- : "memory", "cc");
-#else
- unsigned long flags;
-
- flags = arch_local_cli_save();
- *addr |= mask;
- arch_local_irq_restore(flags);
-#endif
+ atomic_or(mask, v);
}
#endif /* __KERNEL__ */
--
To unsubscribe from this list: send the line "unsubscribe linux-tip-commits" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
|