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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 <rusty@rustcorp.com.au>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Mike Travis <travis@sgi.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
travis@sgi.com
2008-01-30 13:32:52 +01:00
committed by Ingo Molnar
parent b32ef636a5
commit 5280e004fc
8 changed files with 26 additions and 120 deletions
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include/asm-ia64/percpu.h
+2 -22
View File
@@ -16,28 +16,11 @@
#include <linux/threads.h>
#ifdef HAVE_MODEL_SMALL_ATTRIBUTE
# define __SMALL_ADDR_AREA __attribute__((__model__ (__small__)))
#else
# define __SMALL_ADDR_AREA
# define PER_CPU_ATTRIBUTES __attribute__((__model__ (__small__)))
#endif
#define DECLARE_PER_CPU(type, name) \
extern __SMALL_ADDR_AREA __typeof__(type) per_cpu__##name
/* Separate out the type, so (int[3], foo) works. */
#define DEFINE_PER_CPU(type, name) \
__attribute__((__section__(".data.percpu"))) \
__SMALL_ADDR_AREA __typeof__(type) per_cpu__##name
#ifdef CONFIG_SMP
#define DEFINE_PER_CPU_SHARED_ALIGNED(type, name) \
__attribute__((__section__(".data.percpu.shared_aligned"))) \
__SMALL_ADDR_AREA __typeof__(type) per_cpu__##name \
____cacheline_aligned_in_smp
#else
#define DEFINE_PER_CPU_SHARED_ALIGNED(type, name) \
DEFINE_PER_CPU(type, name)
#endif
extern PER_CPU_ATTRIBUTES __typeof__(type) per_cpu__##name
/*
* Pretty much a literal copy of asm-generic/percpu.h, except that percpu_modcopy() is an
@@ -68,9 +51,6 @@ extern void *per_cpu_init(void);
#endif /* SMP */
#define EXPORT_PER_CPU_SYMBOL(var) EXPORT_SYMBOL(per_cpu__##var)
#define EXPORT_PER_CPU_SYMBOL_GPL(var) EXPORT_SYMBOL_GPL(per_cpu__##var)
/*
* Be extremely careful when taking the address of this variable! Due to virtual
* remapping, it is different from the canonical address returned by __get_cpu_var(var)!