1 files changed, 18 insertions, 53 deletions

diff --git a/include/asm-generic/percpu.h b/include/asm-generic/percpu.h
index 00f45ff081a6..d7d50d7ee51e 100644
--- a/include/asm-generic/percpu.h
+++ b/include/asm-generic/percpu.h
@@ -1,13 +1,9 @@
 #ifndef _ASM_GENERIC_PERCPU_H_
 #define _ASM_GENERIC_PERCPU_H_
+
 #include <linux/compiler.h>
 #include <linux/threads.h>
-
-/*
- * Determine the real variable name from the name visible in the
- * kernel sources.
- */
-#define per_cpu_var(var) per_cpu__##var
+#include <linux/percpu-defs.h>
 
 #ifdef CONFIG_SMP
 
@@ -73,63 +69,32 @@ extern void setup_per_cpu_areas(void);
 
 #endif  /* SMP */
 
-#ifndef PER_CPU_ATTRIBUTES
-#define PER_CPU_ATTRIBUTES
+#ifndef PER_CPU_BASE_SECTION
+#ifdef CONFIG_SMP
+#define PER_CPU_BASE_SECTION ".data.percpu"
+#else
+#define PER_CPU_BASE_SECTION ".data"
 #endif
-
-#define DECLARE_PER_CPU(type, name) extern PER_CPU_ATTRIBUTES \
-                                        __typeof__(type) per_cpu_var(name)
-
-/*
- * Optional methods for optimized non-lvalue per-cpu variable access.
- *
- * @var can be a percpu variable or a field of it and its size should
- * equal char, int or long.  percpu_read() evaluates to a lvalue and
- * all others to void.
- *
- * These operations are guaranteed to be atomic w.r.t. preemption.
- * The generic versions use plain get/put_cpu_var().  Archs are
- * encouraged to implement single-instruction alternatives which don't
- * require preemption protection.
- */
-#ifndef percpu_read
-# define percpu_read(var)                                               \
-  ({                                                                    \
-        typeof(per_cpu_var(var)) __tmp_var__;                           \
-        __tmp_var__ = get_cpu_var(var);                                 \
-        put_cpu_var(var);                                               \
-        __tmp_var__;                                                    \
-  })
 #endif
 
-#define __percpu_generic_to_op(var, val, op)                            \
-do {                                                                    \
-        get_cpu_var(var) op val;                                        \
-        put_cpu_var(var);                                               \
-} while (0)
-
-#ifndef percpu_write
-# define percpu_write(var, val)         __percpu_generic_to_op(var, (val), =)
-#endif
+#ifdef CONFIG_SMP
 
-#ifndef percpu_add
-# define percpu_add(var, val)           __percpu_generic_to_op(var, (val), +=)
+#ifdef MODULE
+#define PER_CPU_SHARED_ALIGNED_SECTION ""
+#else
+#define PER_CPU_SHARED_ALIGNED_SECTION ".shared_aligned"
 #endif
+#define PER_CPU_FIRST_SECTION ".first"
 
-#ifndef percpu_sub
-# define percpu_sub(var, val)           __percpu_generic_to_op(var, (val), -=)
-#endif
+#else
 
-#ifndef percpu_and
-# define percpu_and(var, val)           __percpu_generic_to_op(var, (val), &=)
-#endif
+#define PER_CPU_SHARED_ALIGNED_SECTION ""
+#define PER_CPU_FIRST_SECTION ""
 
-#ifndef percpu_or
-# define percpu_or(var, val)            __percpu_generic_to_op(var, (val), |=)
 #endif
 
-#ifndef percpu_xor
-# define percpu_xor(var, val)           __percpu_generic_to_op(var, (val), ^=)
+#ifndef PER_CPU_ATTRIBUTES
+#define PER_CPU_ATTRIBUTES
 #endif
 
 #endif /* _ASM_GENERIC_PERCPU_H_ */