From 072a1e6953d2caffbad7d217ae51cdc61125960f Mon Sep 17 00:00:00 2001 From: "travis@sgi.com" Date: Wed, 30 Jan 2008 13:32:52 +0100 Subject: [PATCH] x86: use generic percpu on 64-bit x86_64 provides an optimized way to determine the local per cpu area offset through the pda and determines the base by accessing a remote pda. Cc: Rusty Russell Cc: Andi Kleen Signed-off-by: Christoph Lameter Signed-off-by: Mike Travis Signed-off-by: Thomas Gleixner Signed-off-by: Ingo Molnar --- include/asm-x86/percpu_64.h | 23 ++--------------------- 1 file changed, 2 insertions(+), 21 deletions(-) diff --git a/include/asm-x86/percpu_64.h b/include/asm-x86/percpu_64.h index 24fe7075248..e7f3f6d2175 100644 --- a/include/asm-x86/percpu_64.h +++ b/include/asm-x86/percpu_64.h @@ -12,21 +12,10 @@ #include #define __per_cpu_offset(cpu) (cpu_pda(cpu)->data_offset) -#define __my_cpu_offset() read_pda(data_offset) +#define __my_cpu_offset read_pda(data_offset) #define per_cpu_offset(x) (__per_cpu_offset(x)) -/* var is in discarded region: offset to particular copy we want */ -#define per_cpu(var, cpu) (*({ \ - extern int simple_identifier_##var(void); \ - RELOC_HIDE(&per_cpu__##var, __per_cpu_offset(cpu)); })) -#define __get_cpu_var(var) (*({ \ - extern int simple_identifier_##var(void); \ - RELOC_HIDE(&per_cpu__##var, __my_cpu_offset()); })) -#define __raw_get_cpu_var(var) (*({ \ - extern int simple_identifier_##var(void); \ - RELOC_HIDE(&per_cpu__##var, __my_cpu_offset()); })) - /* A macro to avoid #include hell... */ #define percpu_modcopy(pcpudst, src, size) \ do { \ @@ -36,16 +25,8 @@ do { \ (src), (size)); \ } while (0) -extern void setup_per_cpu_areas(void); - -#else /* ! SMP */ - -#define per_cpu(var, cpu) (*((void)(cpu), &per_cpu__##var)) -#define __get_cpu_var(var) per_cpu__##var -#define __raw_get_cpu_var(var) per_cpu__##var - #endif /* SMP */ -#define DECLARE_PER_CPU(type, name) extern __typeof__(type) per_cpu__##name +#include #endif /* _ASM_X8664_PERCPU_H_ */ -- 2.20.1