diff options
| author |   travis@sgi.com <travis@sgi.com> | 2008-01-30 23:27:58 +0100 |
|---|---|---|
| committer |   Ingo Molnar <mingo@elte.hu> | 2008-01-30 23:27:58 +0100 |
| commit | 3afc620229ccc8214ef96fd0e7db26d79f788167 (patch) | |
| tree | 0e41242b3d13f071f5aec29d2da074a1067efa59 /include | |
| parent | percpu: change Kconfig to HAVE_SETUP_PER_CPU_AREA (diff) | |
| download | linux-dev-3afc620229ccc8214ef96fd0e7db26d79f788167.tar.xz linux-dev-3afc620229ccc8214ef96fd0e7db26d79f788167.zip | |
SPARC64: use generic percpu
Sparc64 has a way of providing the base address for the per cpu area of the
currently executing processor in a global register.
Sparc64 also provides a way to calculate the address of a per cpu area
from a base address instead of performing an array lookup.
Cc: David Miller <davem@davemloft.net>
Signed-off-by: Mike Travis <travis@sgi.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include')
| -rw-r--r-- | include/asm-sparc64/percpu.h | 22 |
1 files changed, 3 insertions, 19 deletions
diff --git a/include/asm-sparc64/percpu.h b/include/asm-sparc64/percpu.h index c7e52decba98..bee64593023e 100644 --- a/include/asm-sparc64/percpu.h +++ b/include/asm-sparc64/percpu.h @@ -7,7 +7,6 @@ register unsigned long __local_per_cpu_offset asm("g5"); #ifdef CONFIG_SMP -#define setup_per_cpu_areas() do { } while (0) extern void real_setup_per_cpu_areas(void); extern unsigned long __per_cpu_base; @@ -16,29 +15,14 @@ extern unsigned long __per_cpu_shift; (__per_cpu_base + ((unsigned long)(__cpu) << __per_cpu_shift)) #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) (*RELOC_HIDE(&per_cpu__##var, __per_cpu_offset(cpu))) -#define __get_cpu_var(var) (*RELOC_HIDE(&per_cpu__##var, __local_per_cpu_offset)) -#define __raw_get_cpu_var(var) (*RELOC_HIDE(&per_cpu__##var, __local_per_cpu_offset)) - -/* A macro to avoid #include hell... */ -#define percpu_modcopy(pcpudst, src, size) \ -do { \ - unsigned int __i; \ - for_each_possible_cpu(__i) \ - memcpy((pcpudst)+__per_cpu_offset(__i), \ - (src), (size)); \ -} while (0) +#define __my_cpu_offset __local_per_cpu_offset + #else /* ! SMP */ #define real_setup_per_cpu_areas() do { } while (0) -#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 /* __ARCH_SPARC64_PERCPU__ */ |