define new percpu interface for shared data

[pandora-kernel.git] / include / asm-generic / percpu.h

diff --git a/include/asm-generic/percpu.h b/include/asm-generic/percpu.h
index d984a90..d85172e 100644 (file)
--- a/include/asm-generic/percpu.h
+++ b/include/asm-generic/percpu.h
@@ -14,6 +14,11 @@ extern unsigned long __per_cpu_offset[NR_CPUS];
 #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) (*({                         \
        extern int simple_identifier_##var(void);       \
@@ -34,6 +39,9 @@ do {                                                          \
 #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
 #define __raw_get_cpu_var(var)                 per_cpu__##var