diff options
| author | Brian Gerst <brgerst@gmail.com> | 2010-09-09 18:17:26 +0200 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2010-09-10 10:56:51 +0200 |
| commit | 677243d7494d09bfa782425f063a6013de53c35b (patch) | |
| tree | 5126d575a6097d0038a893119d05057a22bf03e6 | |
| parent | db7829c6cc32f3c0c9a324118d743acb1abff081 (diff) | |
percpu: Optimize __get_cpu_var()
Redefine __get_cpu_var() using this_cpu_ptr() which can be
arch-optimized.
Signed-off-by: Brian Gerst <brgerst@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
| -rw-r--r-- | include/asm-generic/percpu.h | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/include/asm-generic/percpu.h b/include/asm-generic/percpu.h index ec643115bb5..d17784ea37f 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 |