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| author |   travis@sgi.com <travis@sgi.com> | 2008-01-30 13:32:52 +0100 |
|---|---|---|
| committer |   Ingo Molnar <mingo@elte.hu> | 2008-01-30 13:32:52 +0100 |
| commit | 072a1e6953d2caffbad7d217ae51cdc61125960f (patch) | |
| tree | 2e7e3190cb5604245233bb73f7ba71f65b486e42 /include/asm-x86/percpu_64.h | |
| parent | x86_32: use generic percpu.h (diff) | |
| download | linux-dev-072a1e6953d2caffbad7d217ae51cdc61125960f.tar.xz linux-dev-072a1e6953d2caffbad7d217ae51cdc61125960f.zip | |
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 <rusty@rustcorp.com.au>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Mike Travis <travis@sgi.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to '')
| -rw-r--r-- | include/asm-x86/percpu_64.h | 23 |
1 files changed, 2 insertions, 21 deletions
diff --git a/include/asm-x86/percpu_64.h b/include/asm-x86/percpu_64.h index 24fe7075248d..e7f3f6d21759 100644 --- a/include/asm-x86/percpu_64.h +++ b/include/asm-x86/percpu_64.h @@ -12,21 +12,10 @@ #include <asm/pda.h> #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 <asm-generic/percpu.h> #endif /* _ASM_X8664_PERCPU_H_ */ |