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| 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 | |
| parent | 988c388ad48f790253850e369dd3e6fdf44ef603 (diff) | |
| download | op-kernel-dev-3afc620229ccc8214ef96fd0e7db26d79f788167.zip op-kernel-dev-3afc620229ccc8214ef96fd0e7db26d79f788167.tar.gz | |
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>
| -rw-r--r-- | arch/sparc64/mm/init.c | 5 | ||||
| -rw-r--r-- | include/asm-sparc64/percpu.h | 22 |
2 files changed, 8 insertions, 19 deletions
diff --git a/arch/sparc64/mm/init.c b/arch/sparc64/mm/init.c index fbeb55d..523e993 100644 --- a/arch/sparc64/mm/init.c +++ b/arch/sparc64/mm/init.c @@ -1328,6 +1328,11 @@ pgd_t swapper_pg_dir[2048]; static void sun4u_pgprot_init(void); static void sun4v_pgprot_init(void); +/* Dummy function */ +void __init setup_per_cpu_areas(void) +{ +} + void __init paging_init(void) { unsigned long end_pfn, pages_avail, shift, phys_base; diff --git a/include/asm-sparc64/percpu.h b/include/asm-sparc64/percpu.h index c7e52de..bee6459 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__ */ |
