define new percpu interface for shared data

[safe/jmp/linux-2.6] / include / asm-ia64 / percpu.h

diff --git a/include/asm-ia64/percpu.h b/include/asm-ia64/percpu.h
index 1e87f19..43a7aac 100644 (file)
--- a/include/asm-ia64/percpu.h
+++ b/include/asm-ia64/percpu.h
@@ -12,7 +12,6 @@
 # define THIS_CPU(var) (per_cpu__##var)  /* use this to mark accesses to per-CPU variables... */
 #else /* !__ASSEMBLY__ */
 
-#include <linux/config.h>
 
 #include <linux/threads.h>
 
@@ -30,6 +29,16 @@
        __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
+
 /*
  * Pretty much a literal copy of asm-generic/percpu.h, except that percpu_modcopy() is an
  * external routine, to avoid include-hell.
@@ -37,12 +46,14 @@
 #ifdef CONFIG_SMP
 
 extern unsigned long __per_cpu_offset[NR_CPUS];
+#define per_cpu_offset(x) (__per_cpu_offset(x))
 
 /* 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 percpu_modcopy(void *pcpudst, const void *src, unsigned long size);
 extern void setup_per_cpu_areas (void);
@@ -50,8 +61,9 @@ extern void *per_cpu_init(void);
 
 #else /* ! SMP */
 
-#define per_cpu(var, cpu)                      (*((void)cpu, &per_cpu__##var))
+#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 */