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 Signed-off-by: Christoph Lameter --- arch/sparc64/mm/init.c | 5 +++++ include/asm-sparc64/percpu.h | 12 ++---------- 2 files changed, 7 insertions(+), 10 deletions(-) Index: linux-2.6/include/asm-sparc64/percpu.h =================================================================== --- linux-2.6.orig/include/asm-sparc64/percpu.h 2007-11-24 10:27:31.088350556 -0800 +++ linux-2.6/include/asm-sparc64/percpu.h 2007-11-24 10:29:52.133100730 -0800 @@ -7,7 +7,6 @@ register unsigned long __local_per_cpu_o #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; @@ -16,21 +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)) +#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 #endif /* __ARCH_SPARC64_PERCPU__ */ Index: linux-2.6/arch/sparc64/mm/init.c =================================================================== --- linux-2.6.orig/arch/sparc64/mm/init.c 2007-11-24 10:30:40.908850808 -0800 +++ linux-2.6/arch/sparc64/mm/init.c 2007-11-24 10:31:16.464100581 -0800 @@ -1323,6 +1323,11 @@ 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; -- - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/