From 677243d7494d09bfa782425f063a6013de53c35b Mon Sep 17 00:00:00 2001 From: Brian Gerst Date: Thu, 9 Sep 2010 18:17:26 +0200 Subject: [PATCH] percpu: Optimize __get_cpu_var() Redefine __get_cpu_var() using this_cpu_ptr() which can be arch-optimized. Signed-off-by: Brian Gerst Signed-off-by: Tejun Heo --- include/asm-generic/percpu.h | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) diff --git a/include/asm-generic/percpu.h b/include/asm-generic/percpu.h index ec643115bb56..d17784ea37ff 100644 --- a/include/asm-generic/percpu.h +++ b/include/asm-generic/percpu.h @@ -55,10 +55,6 @@ extern unsigned long __per_cpu_offset[NR_CPUS]; */ #define per_cpu(var, cpu) \ (*SHIFT_PERCPU_PTR(&(var), per_cpu_offset(cpu))) -#define __get_cpu_var(var) \ - (*SHIFT_PERCPU_PTR(&(var), my_cpu_offset)) -#define __raw_get_cpu_var(var) \ - (*SHIFT_PERCPU_PTR(&(var), __my_cpu_offset)) #ifndef __this_cpu_ptr #define __this_cpu_ptr(ptr) SHIFT_PERCPU_PTR(ptr, __my_cpu_offset) @@ -69,6 +65,9 @@ extern unsigned long __per_cpu_offset[NR_CPUS]; #define this_cpu_ptr(ptr) __this_cpu_ptr(ptr) #endif +#define __get_cpu_var(var) (*this_cpu_ptr(&(var))) +#define __raw_get_cpu_var(var) (*__this_cpu_ptr(&(var))) + #ifdef CONFIG_HAVE_SETUP_PER_CPU_AREA extern void setup_per_cpu_areas(void); #endif