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ia64: use generic percpu

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ia64 has a special processor specific mapping that can be used to locate the
offset for the current per cpu area.

Cc: [email protected]
Signed-off-by: Mike Travis <[email protected]>
Acked-by: Tony Luck <[email protected]>
Signed-off-by: Ingo Molnar <[email protected]>
This commit is contained in:
[email protected] 2008-01-30 23:27:58 +01:00 • committed by Ingo Molnar
commit 05991bef10
2 changed files with 7 additions and 21 deletions
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24
include/asm-ia64/percpu.h
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@ -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])
#define __my_cpu_offset __ia64_per_cpu_var(local_per_cpu_offset)
/* 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)))
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__ */