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percpu: move arch XX_PER_CPU_XX definitions into linux/percpu.h

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- Special consideration for IA64: Add the ability to specify
  arch specific per cpu flags

- remove .data.percpu attribute from DEFINE_PER_CPU for non-smp case.

The arch definitions are all the same. So move them into linux/percpu.h.

We cannot move DECLARE_PER_CPU since some include files just include
asm/percpu.h to avoid include recursion problems.

Cc: Rusty Russell <[email protected]>
Cc: Andi Kleen <[email protected]>
Signed-off-by: Christoph Lameter <[email protected]>
Signed-off-by: Mike Travis <[email protected]>
Signed-off-by: Thomas Gleixner <[email protected]>
Signed-off-by: Ingo Molnar <[email protected]>
This commit is contained in:
[email protected] 2008-01-30 13:32:52 +01:00 • committed by Ingo Molnar
commit 5280e004fc
8 changed files with 26 additions and 120 deletions
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16
include/asm-sparc64/percpu.h
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@ -16,15 +16,6 @@ extern unsigned long __per_cpu_shift;
(__per_cpu_base + ((unsigned long)(__cpu) << __per_cpu_shift))
#define per_cpu_offset(x) (__per_cpu_offset(x))
/* Separate out the type, so (int[3], foo) works. */
#define DEFINE_PER_CPU(type, name) \
__attribute__((__section__(".data.percpu"))) __typeof__(type) per_cpu__##name
#define DEFINE_PER_CPU_SHARED_ALIGNED(type, name) \
__attribute__((__section__(".data.percpu.shared_aligned"))) \
__typeof__(type) per_cpu__##name \
____cacheline_aligned_in_smp
/* 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))
@ -41,10 +32,6 @@ do { \
#else /* ! SMP */
#define real_setup_per_cpu_areas() do { } while (0)
#define DEFINE_PER_CPU(type, name) \
__typeof__(type) per_cpu__##name
#define DEFINE_PER_CPU_SHARED_ALIGNED(type, name) \
DEFINE_PER_CPU(type, name)
#define per_cpu(var, cpu) (*((void)cpu, &per_cpu__##var))
#define __get_cpu_var(var) per_cpu__##var
@ -54,7 +41,4 @@ do { \
#define DECLARE_PER_CPU(type, name) extern __typeof__(type) per_cpu__##name
#define EXPORT_PER_CPU_SYMBOL(var) EXPORT_SYMBOL(per_cpu__##var)
#define EXPORT_PER_CPU_SYMBOL_GPL(var) EXPORT_SYMBOL_GPL(per_cpu__##var)
#endif /* __ARCH_SPARC64_PERCPU__ */