---

yaml
---
r: 205249
b: refs/heads/master
c: 1996bda
h: refs/heads/master
i:
  205247: 146a675
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: d57e34fdd60be7ffd0b1d86bfa1a553df86b7172
+refs/heads/master: 1996bda2a42480c275656233e631ee0966574be4

trunk/arch/alpha/include/asm/local64.h

@@ -0,0 +1 @@
+#include <asm-generic/local64.h>

trunk/arch/arm/include/asm/local64.h

@@ -0,0 +1 @@
+#include <asm-generic/local64.h>

trunk/arch/avr32/include/asm/local64.h

@@ -0,0 +1 @@
+#include <asm-generic/local64.h>

trunk/arch/blackfin/include/asm/local64.h

@@ -0,0 +1 @@
+#include <asm-generic/local64.h>

trunk/arch/cris/include/asm/local64.h

@@ -0,0 +1 @@
+#include <asm-generic/local64.h>

trunk/arch/frv/include/asm/local64.h

@@ -0,0 +1 @@
+#include <asm-generic/local64.h>

trunk/arch/frv/kernel/local64.h

@@ -0,0 +1 @@
+#include <asm-generic/local64.h>

trunk/arch/h8300/include/asm/local64.h

@@ -0,0 +1 @@
+#include <asm-generic/local64.h>

trunk/arch/ia64/include/asm/local64.h

@@ -0,0 +1 @@
+#include <asm-generic/local64.h>

trunk/arch/m32r/include/asm/local64.h

@@ -0,0 +1 @@
+#include <asm-generic/local64.h>

trunk/arch/m68k/include/asm/local64.h

@@ -0,0 +1 @@
+#include <asm-generic/local64.h>

trunk/arch/microblaze/include/asm/local64.h

@@ -0,0 +1 @@
+#include <asm-generic/local64.h>

trunk/arch/mips/include/asm/local64.h

@@ -0,0 +1 @@
+#include <asm-generic/local64.h>

trunk/arch/mn10300/include/asm/local64.h

@@ -0,0 +1 @@
+#include <asm-generic/local64.h>

trunk/arch/parisc/include/asm/local64.h

@@ -0,0 +1 @@
+#include <asm-generic/local64.h>

trunk/arch/powerpc/include/asm/local64.h

@@ -0,0 +1 @@
+#include <asm-generic/local64.h>

trunk/arch/s390/include/asm/local64.h

@@ -0,0 +1 @@
+#include <asm-generic/local64.h>

trunk/arch/score/include/asm/local64.h

@@ -0,0 +1 @@
+#include <asm-generic/local64.h>

trunk/arch/sh/include/asm/local64.h

@@ -0,0 +1 @@
+#include <asm-generic/local64.h>

trunk/arch/sparc/include/asm/local64.h

@@ -0,0 +1 @@
+#include <asm-generic/local64.h>

trunk/arch/x86/include/asm/local64.h

@@ -0,0 +1 @@
+#include <asm-generic/local64.h>

trunk/arch/xtensa/include/asm/local64.h

@@ -0,0 +1 @@
+#include <asm-generic/local64.h>

trunk/include/asm-generic/local64.h

@@ -0,0 +1,96 @@
+#ifndef _ASM_GENERIC_LOCAL64_H
+#define _ASM_GENERIC_LOCAL64_H
+
+#include <linux/percpu.h>
+#include <asm/types.h>
+
+/*
+ * A signed long type for operations which are atomic for a single CPU.
+ * Usually used in combination with per-cpu variables.
+ *
+ * This is the default implementation, which uses atomic64_t.  Which is
+ * rather pointless.  The whole point behind local64_t is that some processors
+ * can perform atomic adds and subtracts in a manner which is atomic wrt IRQs
+ * running on this CPU.  local64_t allows exploitation of such capabilities.
+ */
+
+/* Implement in terms of atomics. */
+
+#if BITS_PER_LONG == 64
+
+#include <asm/local.h>
+
+typedef struct {
+	local_t a;
+} local64_t;
+
+#define LOCAL64_INIT(i)	{ LOCAL_INIT(i) }
+
+#define local64_read(l)		local_read(&(l)->a)
+#define local64_set(l,i)	local_set((&(l)->a),(i))
+#define local64_inc(l)		local_inc(&(l)->a)
+#define local64_dec(l)		local_dec(&(l)->a)
+#define local64_add(i,l)	local_add((i),(&(l)->a))
+#define local64_sub(i,l)	local_sub((i),(&(l)->a))
+
+#define local64_sub_and_test(i, l) local_sub_and_test((i), (&(l)->a))
+#define local64_dec_and_test(l) local_dec_and_test(&(l)->a)
+#define local64_inc_and_test(l) local_inc_and_test(&(l)->a)
+#define local64_add_negative(i, l) local_add_negative((i), (&(l)->a))
+#define local64_add_return(i, l) local_add_return((i), (&(l)->a))
+#define local64_sub_return(i, l) local_sub_return((i), (&(l)->a))
+#define local64_inc_return(l)	local_inc_return(&(l)->a)
+
+#define local64_cmpxchg(l, o, n) local_cmpxchg((&(l)->a), (o), (n))
+#define local64_xchg(l, n)	local_xchg((&(l)->a), (n))
+#define local64_add_unless(l, _a, u) local_add_unless((&(l)->a), (_a), (u))
+#define local64_inc_not_zero(l)	local_inc_not_zero(&(l)->a)
+
+/* Non-atomic variants, ie. preemption disabled and won't be touched
+ * in interrupt, etc.  Some archs can optimize this case well. */
+#define __local64_inc(l)	local64_set((l), local64_read(l) + 1)
+#define __local64_dec(l)	local64_set((l), local64_read(l) - 1)
+#define __local64_add(i,l)	local64_set((l), local64_read(l) + (i))
+#define __local64_sub(i,l)	local64_set((l), local64_read(l) - (i))
+
+#else /* BITS_PER_LONG != 64 */
+
+#include <asm/atomic.h>
+
+/* Don't use typedef: don't want them to be mixed with atomic_t's. */
+typedef struct {
+	atomic64_t a;
+} local64_t;
+
+#define LOCAL64_INIT(i)	{ ATOMIC_LONG_INIT(i) }
+
+#define local64_read(l)		atomic64_read(&(l)->a)
+#define local64_set(l,i)	atomic64_set((&(l)->a),(i))
+#define local64_inc(l)		atomic64_inc(&(l)->a)
+#define local64_dec(l)		atomic64_dec(&(l)->a)
+#define local64_add(i,l)	atomic64_add((i),(&(l)->a))
+#define local64_sub(i,l)	atomic64_sub((i),(&(l)->a))
+
+#define local64_sub_and_test(i, l) atomic64_sub_and_test((i), (&(l)->a))
+#define local64_dec_and_test(l) atomic64_dec_and_test(&(l)->a)
+#define local64_inc_and_test(l) atomic64_inc_and_test(&(l)->a)
+#define local64_add_negative(i, l) atomic64_add_negative((i), (&(l)->a))
+#define local64_add_return(i, l) atomic64_add_return((i), (&(l)->a))
+#define local64_sub_return(i, l) atomic64_sub_return((i), (&(l)->a))
+#define local64_inc_return(l)	atomic64_inc_return(&(l)->a)
+
+#define local64_cmpxchg(l, o, n) atomic64_cmpxchg((&(l)->a), (o), (n))
+#define local64_xchg(l, n)	atomic64_xchg((&(l)->a), (n))
+#define local64_add_unless(l, _a, u) atomic64_add_unless((&(l)->a), (_a), (u))
+#define local64_inc_not_zero(l)	atomic64_inc_not_zero(&(l)->a)
+
+/* Non-atomic variants, ie. preemption disabled and won't be touched
+ * in interrupt, etc.  Some archs can optimize this case well. */
+#define __local64_inc(l)	local64_set((l), local64_read(l) + 1)
+#define __local64_dec(l)	local64_set((l), local64_read(l) - 1)
+#define __local64_add(i,l)	local64_set((l), local64_read(l) + (i))
+#define __local64_sub(i,l)	local64_set((l), local64_read(l) - (i))
+
+#endif /* BITS_PER_LONG != 64 */
+
+#endif /* _ASM_GENERIC_LOCAL64_H */