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

- 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>

1 files changed, 2 insertions, 22 deletions

diff --git a/include/asm-ia64/percpu.h b/include/asm-ia64/percpu.h
index c4f1e328a5ba..0095bcf79848 100644
--- a/include/asm-ia64/percpu.h
+++ b/include/asm-ia64/percpu.h
@@ -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)!