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Message-Id: <1283620871-818-3-git-send-email-brgerst@gmail.com> Date: Sat, 4 Sep 2010 13:21:11 -0400 From: Brian Gerst <brgerst@...il.com> To: tj@...nel.org Cc: x86@...nel.org, linux-kernel@...r.kernel.org Subject: [PATCH 2/2] percpu: Optimize __get_cpu_var() Redefine __get_cpu_var() using this_cpu_ptr() which can be arch-optimized. Signed-off-by: Brian Gerst <brgerst@...il.com> --- 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 5820fcb..c6e2c2d 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 -- 1.7.2.2 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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