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authortravis@sgi.com <travis@sgi.com>2008-01-30 13:32:52 +0100
committerIngo Molnar <mingo@elte.hu>2008-01-30 13:32:52 +0100
commit072a1e6953d2caffbad7d217ae51cdc61125960f (patch)
tree2e7e3190cb5604245233bb73f7ba71f65b486e42
parent0af8a5ccc51ee2269712c90ab09c91b0150f4224 (diff)
x86: use generic percpu on 64-bit
x86_64 provides an optimized way to determine the local per cpu area offset through the pda and determines the base by accessing a remote pda. 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>
-rw-r--r--include/asm-x86/percpu_64.h23
1 files changed, 2 insertions, 21 deletions
diff --git a/include/asm-x86/percpu_64.h b/include/asm-x86/percpu_64.h
index 24fe7075248..e7f3f6d2175 100644
--- a/include/asm-x86/percpu_64.h
+++ b/include/asm-x86/percpu_64.h
@@ -12,21 +12,10 @@
#include <asm/pda.h>
#define __per_cpu_offset(cpu) (cpu_pda(cpu)->data_offset)
-#define __my_cpu_offset() read_pda(data_offset)
+#define __my_cpu_offset read_pda(data_offset)
#define per_cpu_offset(x) (__per_cpu_offset(x))
-/* var is in discarded region: offset to particular copy we want */
-#define per_cpu(var, cpu) (*({ \
- extern int simple_identifier_##var(void); \
- RELOC_HIDE(&per_cpu__##var, __per_cpu_offset(cpu)); }))
-#define __get_cpu_var(var) (*({ \
- extern int simple_identifier_##var(void); \
- RELOC_HIDE(&per_cpu__##var, __my_cpu_offset()); }))
-#define __raw_get_cpu_var(var) (*({ \
- extern int simple_identifier_##var(void); \
- RELOC_HIDE(&per_cpu__##var, __my_cpu_offset()); }))
-
/* A macro to avoid #include hell... */
#define percpu_modcopy(pcpudst, src, size) \
do { \
@@ -36,16 +25,8 @@ do { \
(src), (size)); \
} while (0)
-extern void setup_per_cpu_areas(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
-
#endif /* SMP */
-#define DECLARE_PER_CPU(type, name) extern __typeof__(type) per_cpu__##name
+#include <asm-generic/percpu.h>
#endif /* _ASM_X8664_PERCPU_H_ */