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authortravis@sgi.com <travis@sgi.com>2008-01-30 23:27:58 +0100
committerIngo Molnar <mingo@elte.hu>2008-01-30 23:27:58 +0100
commit05991bef104051d47e2160ee9499186aff7da5ad (patch)
treeff6b00b2d407acd0b743d4272f4577e97e09c823
parent3afc620229ccc8214ef96fd0e7db26d79f788167 (diff)
ia64: use generic percpu
ia64 has a special processor specific mapping that can be used to locate the offset for the current per cpu area. Cc: linux-ia64@vger.kernel.org Signed-off-by: Mike Travis <travis@sgi.com> Acked-by: Tony Luck <tony.luck@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
-rw-r--r--include/asm-ia64/percpu.h24
-rw-r--r--include/linux/percpu.h4
2 files changed, 7 insertions, 21 deletions
diff --git a/include/asm-ia64/percpu.h b/include/asm-ia64/percpu.h
index 7ef684220cf..26404b77f00 100644
--- a/include/asm-ia64/percpu.h
+++ b/include/asm-ia64/percpu.h
@@ -19,29 +19,14 @@
# define PER_CPU_ATTRIBUTES __attribute__((__model__ (__small__)))
#endif
-#define DECLARE_PER_CPU(type, name) \
- extern PER_CPU_ATTRIBUTES __typeof__(type) per_cpu__##name
-
#ifdef CONFIG_SMP
-extern unsigned long __per_cpu_offset[NR_CPUS];
-#define per_cpu_offset(x) (__per_cpu_offset[x])
-
-/* Equal to __per_cpu_offset[smp_processor_id()], but faster to access: */
-DECLARE_PER_CPU(unsigned long, local_per_cpu_offset);
-
-#define per_cpu(var, cpu) (*RELOC_HIDE(&per_cpu__##var, __per_cpu_offset[cpu]))
-#define __get_cpu_var(var) (*RELOC_HIDE(&per_cpu__##var, __ia64_per_cpu_var(local_per_cpu_offset)))
-#define __raw_get_cpu_var(var) (*RELOC_HIDE(&per_cpu__##var, __ia64_per_cpu_var(local_per_cpu_offset)))
+#define __my_cpu_offset __ia64_per_cpu_var(local_per_cpu_offset)
-extern void setup_per_cpu_areas (void);
extern void *per_cpu_init(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
#define per_cpu_init() (__phys_per_cpu_start)
#endif /* SMP */
@@ -52,7 +37,12 @@ extern void *per_cpu_init(void);
* On the positive side, using __ia64_per_cpu_var() instead of __get_cpu_var() is slightly
* more efficient.
*/
-#define __ia64_per_cpu_var(var) (per_cpu__##var)
+#define __ia64_per_cpu_var(var) per_cpu__##var
+
+#include <asm-generic/percpu.h>
+
+/* Equal to __per_cpu_offset[smp_processor_id()], but faster to access: */
+DECLARE_PER_CPU(unsigned long, local_per_cpu_offset);
#endif /* !__ASSEMBLY__ */
diff --git a/include/linux/percpu.h b/include/linux/percpu.h
index 00412bb494c..50faa0ea28e 100644
--- a/include/linux/percpu.h
+++ b/include/linux/percpu.h
@@ -9,10 +9,6 @@
#include <asm/percpu.h>
-#ifndef PER_CPU_ATTRIBUTES
-#define PER_CPU_ATTRIBUTES
-#endif
-
#ifdef CONFIG_SMP
#define DEFINE_PER_CPU(type, name) \
__attribute__((__section__(".data.percpu"))) \