diff options
Diffstat (limited to 'ANDROID_3.4.5/include/linux/spinlock.h')
| -rw-r--r-- | ANDROID_3.4.5/include/linux/spinlock.h | 397 |
1 files changed, 0 insertions, 397 deletions
diff --git a/ANDROID_3.4.5/include/linux/spinlock.h b/ANDROID_3.4.5/include/linux/spinlock.h deleted file mode 100644 index 7d537ced..00000000 --- a/ANDROID_3.4.5/include/linux/spinlock.h +++ /dev/null @@ -1,397 +0,0 @@ -#ifndef __LINUX_SPINLOCK_H -#define __LINUX_SPINLOCK_H - -/* - * include/linux/spinlock.h - generic spinlock/rwlock declarations - * - * here's the role of the various spinlock/rwlock related include files: - * - * on SMP builds: - * - * asm/spinlock_types.h: contains the arch_spinlock_t/arch_rwlock_t and the - * initializers - * - * linux/spinlock_types.h: - * defines the generic type and initializers - * - * asm/spinlock.h: contains the arch_spin_*()/etc. lowlevel - * implementations, mostly inline assembly code - * - * (also included on UP-debug builds:) - * - * linux/spinlock_api_smp.h: - * contains the prototypes for the _spin_*() APIs. - * - * linux/spinlock.h: builds the final spin_*() APIs. - * - * on UP builds: - * - * linux/spinlock_type_up.h: - * contains the generic, simplified UP spinlock type. - * (which is an empty structure on non-debug builds) - * - * linux/spinlock_types.h: - * defines the generic type and initializers - * - * linux/spinlock_up.h: - * contains the arch_spin_*()/etc. version of UP - * builds. (which are NOPs on non-debug, non-preempt - * builds) - * - * (included on UP-non-debug builds:) - * - * linux/spinlock_api_up.h: - * builds the _spin_*() APIs. - * - * linux/spinlock.h: builds the final spin_*() APIs. - */ - -#include <linux/typecheck.h> -#include <linux/preempt.h> -#include <linux/linkage.h> -#include <linux/compiler.h> -#include <linux/irqflags.h> -#include <linux/thread_info.h> -#include <linux/kernel.h> -#include <linux/stringify.h> -#include <linux/bottom_half.h> -#include <asm/barrier.h> - - -/* - * Must define these before including other files, inline functions need them - */ -#define LOCK_SECTION_NAME ".text..lock."KBUILD_BASENAME - -#define LOCK_SECTION_START(extra) \ - ".subsection 1\n\t" \ - extra \ - ".ifndef " LOCK_SECTION_NAME "\n\t" \ - LOCK_SECTION_NAME ":\n\t" \ - ".endif\n" - -#define LOCK_SECTION_END \ - ".previous\n\t" - -#define __lockfunc __attribute__((section(".spinlock.text"))) - -/* - * Pull the arch_spinlock_t and arch_rwlock_t definitions: - */ -#include <linux/spinlock_types.h> - -/* - * Pull the arch_spin*() functions/declarations (UP-nondebug doesn't need them): - */ -#ifdef CONFIG_SMP -# include <asm/spinlock.h> -#else -# include <linux/spinlock_up.h> -#endif - -#ifdef CONFIG_DEBUG_SPINLOCK - extern void __raw_spin_lock_init(raw_spinlock_t *lock, const char *name, - struct lock_class_key *key); -# define raw_spin_lock_init(lock) \ -do { \ - static struct lock_class_key __key; \ - \ - __raw_spin_lock_init((lock), #lock, &__key); \ -} while (0) - -#else -# define raw_spin_lock_init(lock) \ - do { *(lock) = __RAW_SPIN_LOCK_UNLOCKED(lock); } while (0) -#endif - -#define raw_spin_is_locked(lock) arch_spin_is_locked(&(lock)->raw_lock) - -#ifdef CONFIG_GENERIC_LOCKBREAK -#define raw_spin_is_contended(lock) ((lock)->break_lock) -#else - -#ifdef arch_spin_is_contended -#define raw_spin_is_contended(lock) arch_spin_is_contended(&(lock)->raw_lock) -#else -#define raw_spin_is_contended(lock) (((void)(lock), 0)) -#endif /*arch_spin_is_contended*/ -#endif - -/* The lock does not imply full memory barrier. */ -#ifndef ARCH_HAS_SMP_MB_AFTER_LOCK -static inline void smp_mb__after_lock(void) { smp_mb(); } -#endif - -/** - * raw_spin_unlock_wait - wait until the spinlock gets unlocked - * @lock: the spinlock in question. - */ -#define raw_spin_unlock_wait(lock) arch_spin_unlock_wait(&(lock)->raw_lock) - -#ifdef CONFIG_DEBUG_SPINLOCK - extern void do_raw_spin_lock(raw_spinlock_t *lock) __acquires(lock); -#define do_raw_spin_lock_flags(lock, flags) do_raw_spin_lock(lock) - extern int do_raw_spin_trylock(raw_spinlock_t *lock); - extern void do_raw_spin_unlock(raw_spinlock_t *lock) __releases(lock); -#else -static inline void do_raw_spin_lock(raw_spinlock_t *lock) __acquires(lock) -{ - __acquire(lock); - arch_spin_lock(&lock->raw_lock); -} - -static inline void -do_raw_spin_lock_flags(raw_spinlock_t *lock, unsigned long *flags) __acquires(lock) -{ - __acquire(lock); - arch_spin_lock_flags(&lock->raw_lock, *flags); -} - -static inline int do_raw_spin_trylock(raw_spinlock_t *lock) -{ - return arch_spin_trylock(&(lock)->raw_lock); -} - -static inline void do_raw_spin_unlock(raw_spinlock_t *lock) __releases(lock) -{ - arch_spin_unlock(&lock->raw_lock); - __release(lock); -} -#endif - -/* - * Define the various spin_lock methods. Note we define these - * regardless of whether CONFIG_SMP or CONFIG_PREEMPT are set. The - * various methods are defined as nops in the case they are not - * required. - */ -#define raw_spin_trylock(lock) __cond_lock(lock, _raw_spin_trylock(lock)) - -#define raw_spin_lock(lock) _raw_spin_lock(lock) - -#ifdef CONFIG_DEBUG_LOCK_ALLOC -# define raw_spin_lock_nested(lock, subclass) \ - _raw_spin_lock_nested(lock, subclass) - -# define raw_spin_lock_nest_lock(lock, nest_lock) \ - do { \ - typecheck(struct lockdep_map *, &(nest_lock)->dep_map);\ - _raw_spin_lock_nest_lock(lock, &(nest_lock)->dep_map); \ - } while (0) -#else -# define raw_spin_lock_nested(lock, subclass) _raw_spin_lock(lock) -# define raw_spin_lock_nest_lock(lock, nest_lock) _raw_spin_lock(lock) -#endif - -#if defined(CONFIG_SMP) || defined(CONFIG_DEBUG_SPINLOCK) - -#define raw_spin_lock_irqsave(lock, flags) \ - do { \ - typecheck(unsigned long, flags); \ - flags = _raw_spin_lock_irqsave(lock); \ - } while (0) - -#ifdef CONFIG_DEBUG_LOCK_ALLOC -#define raw_spin_lock_irqsave_nested(lock, flags, subclass) \ - do { \ - typecheck(unsigned long, flags); \ - flags = _raw_spin_lock_irqsave_nested(lock, subclass); \ - } while (0) -#else -#define raw_spin_lock_irqsave_nested(lock, flags, subclass) \ - do { \ - typecheck(unsigned long, flags); \ - flags = _raw_spin_lock_irqsave(lock); \ - } while (0) -#endif - -#else - -#define raw_spin_lock_irqsave(lock, flags) \ - do { \ - typecheck(unsigned long, flags); \ - _raw_spin_lock_irqsave(lock, flags); \ - } while (0) - -#define raw_spin_lock_irqsave_nested(lock, flags, subclass) \ - raw_spin_lock_irqsave(lock, flags) - -#endif - -#define raw_spin_lock_irq(lock) _raw_spin_lock_irq(lock) -#define raw_spin_lock_bh(lock) _raw_spin_lock_bh(lock) -#define raw_spin_unlock(lock) _raw_spin_unlock(lock) -#define raw_spin_unlock_irq(lock) _raw_spin_unlock_irq(lock) - -#define raw_spin_unlock_irqrestore(lock, flags) \ - do { \ - typecheck(unsigned long, flags); \ - _raw_spin_unlock_irqrestore(lock, flags); \ - } while (0) -#define raw_spin_unlock_bh(lock) _raw_spin_unlock_bh(lock) - -#define raw_spin_trylock_bh(lock) \ - __cond_lock(lock, _raw_spin_trylock_bh(lock)) - -#define raw_spin_trylock_irq(lock) \ -({ \ - local_irq_disable(); \ - raw_spin_trylock(lock) ? \ - 1 : ({ local_irq_enable(); 0; }); \ -}) - -#define raw_spin_trylock_irqsave(lock, flags) \ -({ \ - local_irq_save(flags); \ - raw_spin_trylock(lock) ? \ - 1 : ({ local_irq_restore(flags); 0; }); \ -}) - -/** - * raw_spin_can_lock - would raw_spin_trylock() succeed? - * @lock: the spinlock in question. - */ -#define raw_spin_can_lock(lock) (!raw_spin_is_locked(lock)) - -/* Include rwlock functions */ -#include <linux/rwlock.h> - -/* - * Pull the _spin_*()/_read_*()/_write_*() functions/declarations: - */ -#if defined(CONFIG_SMP) || defined(CONFIG_DEBUG_SPINLOCK) -# include <linux/spinlock_api_smp.h> -#else -# include <linux/spinlock_api_up.h> -#endif - -/* - * Map the spin_lock functions to the raw variants for PREEMPT_RT=n - */ - -static inline raw_spinlock_t *spinlock_check(spinlock_t *lock) -{ - return &lock->rlock; -} - -#define spin_lock_init(_lock) \ -do { \ - spinlock_check(_lock); \ - raw_spin_lock_init(&(_lock)->rlock); \ -} while (0) - -static inline void spin_lock(spinlock_t *lock) -{ - raw_spin_lock(&lock->rlock); -} - -static inline void spin_lock_bh(spinlock_t *lock) -{ - raw_spin_lock_bh(&lock->rlock); -} - -static inline int spin_trylock(spinlock_t *lock) -{ - return raw_spin_trylock(&lock->rlock); -} - -#define spin_lock_nested(lock, subclass) \ -do { \ - raw_spin_lock_nested(spinlock_check(lock), subclass); \ -} while (0) - -#define spin_lock_nest_lock(lock, nest_lock) \ -do { \ - raw_spin_lock_nest_lock(spinlock_check(lock), nest_lock); \ -} while (0) - -static inline void spin_lock_irq(spinlock_t *lock) -{ - raw_spin_lock_irq(&lock->rlock); -} - -#define spin_lock_irqsave(lock, flags) \ -do { \ - raw_spin_lock_irqsave(spinlock_check(lock), flags); \ -} while (0) - -#define spin_lock_irqsave_nested(lock, flags, subclass) \ -do { \ - raw_spin_lock_irqsave_nested(spinlock_check(lock), flags, subclass); \ -} while (0) - -static inline void spin_unlock(spinlock_t *lock) -{ - raw_spin_unlock(&lock->rlock); -} - -static inline void spin_unlock_bh(spinlock_t *lock) -{ - raw_spin_unlock_bh(&lock->rlock); -} - -static inline void spin_unlock_irq(spinlock_t *lock) -{ - raw_spin_unlock_irq(&lock->rlock); -} - -static inline void spin_unlock_irqrestore(spinlock_t *lock, unsigned long flags) -{ - raw_spin_unlock_irqrestore(&lock->rlock, flags); -} - -static inline int spin_trylock_bh(spinlock_t *lock) -{ - return raw_spin_trylock_bh(&lock->rlock); -} - -static inline int spin_trylock_irq(spinlock_t *lock) -{ - return raw_spin_trylock_irq(&lock->rlock); -} - -#define spin_trylock_irqsave(lock, flags) \ -({ \ - raw_spin_trylock_irqsave(spinlock_check(lock), flags); \ -}) - -static inline void spin_unlock_wait(spinlock_t *lock) -{ - raw_spin_unlock_wait(&lock->rlock); -} - -static inline int spin_is_locked(spinlock_t *lock) -{ - return raw_spin_is_locked(&lock->rlock); -} - -static inline int spin_is_contended(spinlock_t *lock) -{ - return raw_spin_is_contended(&lock->rlock); -} - -static inline int spin_can_lock(spinlock_t *lock) -{ - return raw_spin_can_lock(&lock->rlock); -} - -#define assert_spin_locked(lock) assert_raw_spin_locked(&(lock)->rlock) - -/* - * Pull the atomic_t declaration: - * (asm-mips/atomic.h needs above definitions) - */ -#include <linux/atomic.h> -/** - * atomic_dec_and_lock - lock on reaching reference count zero - * @atomic: the atomic counter - * @lock: the spinlock in question - * - * Decrements @atomic by 1. If the result is 0, returns true and locks - * @lock. Returns false for all other cases. - */ -extern int _atomic_dec_and_lock(atomic_t *atomic, spinlock_t *lock); -#define atomic_dec_and_lock(atomic, lock) \ - __cond_lock(lock, _atomic_dec_and_lock(atomic, lock)) - -#endif /* __LINUX_SPINLOCK_H */ |