Re: [Ltt-dev] [PATCH 10/10] local_t : x86_64 : local_add_return

local_add_return should also deal with the removed volatile from local_t.

Inspired from atomic_t modifications : it must use the local_t both as input and
output.

Signed-off-by: Mathieu Desnoyers <[email protected]>


--- a/include/asm-x86_64/local.h
+++ b/include/asm-x86_64/local.h
@@ -136,8 +136,8 @@ static __inline__ long local_add_return(
 	long __i = i;
 	__asm__ __volatile__(
 		"xaddq %0, %1;"
-		:"=r"(i)
-		:"m"(l->a.counter), "0"(i));
+		:"+r" (i), "+m" (l->a.counter)
+		: : "memory");
 	return i + __i;
 }
 
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---

• References:
  • [PATCH 0/10] local_t : adding and standardising atomic primitives
    • From: Mathieu Desnoyers <[email protected]>
  • [PATCH 10/10] local_t : x86_64
    • From: Mathieu Desnoyers <[email protected]>

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