[PATCH] x86_64: Correct wrong comment in local.h (1c173409) · Commits · 戴 / test

local_t is actually a win over atomic_t because it does not need lock prefixes. Signed-off-by:

include/asm-x86_64/local.h

+2 −1

Original line number	Diff line number	Diff line
		@@ -45,7 +45,8 @@ static __inline__ void local_sub(unsigned long i, local_t *v)
		:"ir" (i), "m" (v->counter));
		}

		/* On x86, these are no better than the atomic variants. */
		/* On x86-64 these are better than the atomic variants on SMP kernels
		because they dont use a lock prefix. */
		#define __local_inc(l) local_inc(l)
		#define __local_dec(l) local_dec(l)
		#define __local_add(i,l) local_add((i),(l))