forked from rrcarlosr/Jetpack
225 lines
5.9 KiB
Diff
225 lines
5.9 KiB
Diff
From 52a60804d06912ab9f5188937aba601b4b31f75d Mon Sep 17 00:00:00 2001
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From: Thomas Gleixner <tglx@linutronix.de>
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Date: Wed, 29 Jun 2011 19:34:01 +0200
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Subject: [PATCH 174/352] spinlock: Split the lock types header
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Split raw_spinlock into its own file and the remaining spinlock_t into
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its own non-RT header. The non-RT header will be replaced later by sleeping
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spinlocks.
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Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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---
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include/linux/rwlock_types.h | 4 ++
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include/linux/spinlock_types.h | 74 +------------------------------------
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include/linux/spinlock_types_nort.h | 33 +++++++++++++++++
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include/linux/spinlock_types_raw.h | 56 ++++++++++++++++++++++++++++
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4 files changed, 95 insertions(+), 72 deletions(-)
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create mode 100644 include/linux/spinlock_types_nort.h
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create mode 100644 include/linux/spinlock_types_raw.h
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diff --git a/include/linux/rwlock_types.h b/include/linux/rwlock_types.h
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index cc0072e..5317cd9 100644
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--- a/include/linux/rwlock_types.h
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+++ b/include/linux/rwlock_types.h
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@@ -1,6 +1,10 @@
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#ifndef __LINUX_RWLOCK_TYPES_H
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#define __LINUX_RWLOCK_TYPES_H
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+#if !defined(__LINUX_SPINLOCK_TYPES_H)
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+# error "Do not include directly, include spinlock_types.h"
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+#endif
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+
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/*
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* include/linux/rwlock_types.h - generic rwlock type definitions
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* and initializers
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diff --git a/include/linux/spinlock_types.h b/include/linux/spinlock_types.h
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index 73548eb..5c8664d 100644
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--- a/include/linux/spinlock_types.h
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+++ b/include/linux/spinlock_types.h
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@@ -9,79 +9,9 @@
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* Released under the General Public License (GPL).
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*/
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-#if defined(CONFIG_SMP)
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-# include <asm/spinlock_types.h>
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-#else
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-# include <linux/spinlock_types_up.h>
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-#endif
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+#include <linux/spinlock_types_raw.h>
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-#include <linux/lockdep.h>
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-
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-typedef struct raw_spinlock {
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- arch_spinlock_t raw_lock;
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-#ifdef CONFIG_GENERIC_LOCKBREAK
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- unsigned int break_lock;
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-#endif
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-#ifdef CONFIG_DEBUG_SPINLOCK
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- unsigned int magic, owner_cpu;
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- void *owner;
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-#endif
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-#ifdef CONFIG_DEBUG_LOCK_ALLOC
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- struct lockdep_map dep_map;
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-#endif
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-} raw_spinlock_t;
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-
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-#define SPINLOCK_MAGIC 0xdead4ead
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-
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-#define SPINLOCK_OWNER_INIT ((void *)-1L)
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-
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-#ifdef CONFIG_DEBUG_LOCK_ALLOC
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-# define SPIN_DEP_MAP_INIT(lockname) .dep_map = { .name = #lockname }
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-#else
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-# define SPIN_DEP_MAP_INIT(lockname)
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-#endif
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-
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-#ifdef CONFIG_DEBUG_SPINLOCK
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-# define SPIN_DEBUG_INIT(lockname) \
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- .magic = SPINLOCK_MAGIC, \
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- .owner_cpu = -1, \
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- .owner = SPINLOCK_OWNER_INIT,
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-#else
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-# define SPIN_DEBUG_INIT(lockname)
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-#endif
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-
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-#define __RAW_SPIN_LOCK_INITIALIZER(lockname) \
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- { \
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- .raw_lock = __ARCH_SPIN_LOCK_UNLOCKED, \
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- SPIN_DEBUG_INIT(lockname) \
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- SPIN_DEP_MAP_INIT(lockname) }
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-
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-#define __RAW_SPIN_LOCK_UNLOCKED(lockname) \
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- (raw_spinlock_t) __RAW_SPIN_LOCK_INITIALIZER(lockname)
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-
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-#define DEFINE_RAW_SPINLOCK(x) raw_spinlock_t x = __RAW_SPIN_LOCK_UNLOCKED(x)
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-
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-typedef struct spinlock {
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- union {
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- struct raw_spinlock rlock;
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-
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-#ifdef CONFIG_DEBUG_LOCK_ALLOC
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-# define LOCK_PADSIZE (offsetof(struct raw_spinlock, dep_map))
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- struct {
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- u8 __padding[LOCK_PADSIZE];
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- struct lockdep_map dep_map;
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- };
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-#endif
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- };
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-} spinlock_t;
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-
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-#define __SPIN_LOCK_INITIALIZER(lockname) \
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- { { .rlock = __RAW_SPIN_LOCK_INITIALIZER(lockname) } }
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-
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-#define __SPIN_LOCK_UNLOCKED(lockname) \
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- (spinlock_t ) __SPIN_LOCK_INITIALIZER(lockname)
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-
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-#define DEFINE_SPINLOCK(x) spinlock_t x = __SPIN_LOCK_UNLOCKED(x)
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+#include <linux/spinlock_types_nort.h>
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#include <linux/rwlock_types.h>
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diff --git a/include/linux/spinlock_types_nort.h b/include/linux/spinlock_types_nort.h
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new file mode 100644
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index 0000000..f1dac1f
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--- /dev/null
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+++ b/include/linux/spinlock_types_nort.h
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@@ -0,0 +1,33 @@
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+#ifndef __LINUX_SPINLOCK_TYPES_NORT_H
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+#define __LINUX_SPINLOCK_TYPES_NORT_H
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+
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+#ifndef __LINUX_SPINLOCK_TYPES_H
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+#error "Do not include directly. Include spinlock_types.h instead"
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+#endif
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+
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+/*
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+ * The non RT version maps spinlocks to raw_spinlocks
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+ */
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+typedef struct spinlock {
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+ union {
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+ struct raw_spinlock rlock;
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+
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+#ifdef CONFIG_DEBUG_LOCK_ALLOC
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+# define LOCK_PADSIZE (offsetof(struct raw_spinlock, dep_map))
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+ struct {
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+ u8 __padding[LOCK_PADSIZE];
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+ struct lockdep_map dep_map;
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+ };
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+#endif
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+ };
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+} spinlock_t;
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+
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+#define __SPIN_LOCK_INITIALIZER(lockname) \
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+ { { .rlock = __RAW_SPIN_LOCK_INITIALIZER(lockname) } }
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+
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+#define __SPIN_LOCK_UNLOCKED(lockname) \
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+ (spinlock_t ) __SPIN_LOCK_INITIALIZER(lockname)
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+
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+#define DEFINE_SPINLOCK(x) spinlock_t x = __SPIN_LOCK_UNLOCKED(x)
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+
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+#endif
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diff --git a/include/linux/spinlock_types_raw.h b/include/linux/spinlock_types_raw.h
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new file mode 100644
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index 0000000..edffc4d
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--- /dev/null
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+++ b/include/linux/spinlock_types_raw.h
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@@ -0,0 +1,56 @@
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+#ifndef __LINUX_SPINLOCK_TYPES_RAW_H
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+#define __LINUX_SPINLOCK_TYPES_RAW_H
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+
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+#if defined(CONFIG_SMP)
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+# include <asm/spinlock_types.h>
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+#else
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+# include <linux/spinlock_types_up.h>
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+#endif
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+
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+#include <linux/lockdep.h>
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+
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+typedef struct raw_spinlock {
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+ arch_spinlock_t raw_lock;
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+#ifdef CONFIG_GENERIC_LOCKBREAK
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+ unsigned int break_lock;
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+#endif
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+#ifdef CONFIG_DEBUG_SPINLOCK
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+ unsigned int magic, owner_cpu;
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+ void *owner;
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+#endif
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+#ifdef CONFIG_DEBUG_LOCK_ALLOC
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+ struct lockdep_map dep_map;
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+#endif
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+} raw_spinlock_t;
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+
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+#define SPINLOCK_MAGIC 0xdead4ead
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+
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+#define SPINLOCK_OWNER_INIT ((void *)-1L)
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+
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+#ifdef CONFIG_DEBUG_LOCK_ALLOC
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+# define SPIN_DEP_MAP_INIT(lockname) .dep_map = { .name = #lockname }
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+#else
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+# define SPIN_DEP_MAP_INIT(lockname)
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+#endif
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+
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+#ifdef CONFIG_DEBUG_SPINLOCK
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+# define SPIN_DEBUG_INIT(lockname) \
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+ .magic = SPINLOCK_MAGIC, \
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+ .owner_cpu = -1, \
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+ .owner = SPINLOCK_OWNER_INIT,
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+#else
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+# define SPIN_DEBUG_INIT(lockname)
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+#endif
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+
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+#define __RAW_SPIN_LOCK_INITIALIZER(lockname) \
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+ { \
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+ .raw_lock = __ARCH_SPIN_LOCK_UNLOCKED, \
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+ SPIN_DEBUG_INIT(lockname) \
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+ SPIN_DEP_MAP_INIT(lockname) }
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+
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+#define __RAW_SPIN_LOCK_UNLOCKED(lockname) \
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+ (raw_spinlock_t) __RAW_SPIN_LOCK_INITIALIZER(lockname)
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+
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+#define DEFINE_RAW_SPINLOCK(x) raw_spinlock_t x = __RAW_SPIN_LOCK_UNLOCKED(x)
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+
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+#endif
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--
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2.7.4
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