111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert/**************************************************************************** 211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert **************************************************************************** 311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert *** 411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert *** This header was automatically generated from a Linux kernel header 511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert *** of the same name, to make information necessary for userspace to 611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert *** call into the kernel available to libc. It contains only constants, 711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert *** structures, and macros generated from the original header, and thus, 811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert *** contains no copyrightable information. 911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert *** 1011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert **************************************************************************** 1111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert ****************************************************************************/ 1211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#ifndef __LINUX_SPINLOCK_H 1311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __LINUX_SPINLOCK_H 1411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 1511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#include <linux/preempt.h> 1611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#include <linux/linkage.h> 1711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#include <linux/compiler.h> 1811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#include <linux/thread_info.h> 1911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#include <linux/kernel.h> 2011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#include <linux/stringify.h> 2111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 2211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#include <asm/system.h> 2311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 2411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define LOCK_SECTION_NAME ".text.lock."KBUILD_BASENAME 2511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 2611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define LOCK_SECTION_START(extra) ".subsection 1\n\t" extra ".ifndef " LOCK_SECTION_NAME "\n\t" LOCK_SECTION_NAME ":\n\t" ".endif\n" 2711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 2811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define LOCK_SECTION_END ".previous\n\t" 2911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 3011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __lockfunc fastcall __attribute__((section(".spinlock.text"))) 3111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 3211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#include <linux/spinlock_types.h> 3311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 3411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#include <linux/spinlock_up.h> 3511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 3611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define spin_lock_init(lock) do { *(lock) = SPIN_LOCK_UNLOCKED; } while (0) 3711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 3811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define rwlock_init(lock) do { *(lock) = RW_LOCK_UNLOCKED; } while (0) 3911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 4011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define spin_is_locked(lock) __raw_spin_is_locked(&(lock)->raw_lock) 4111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 4211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define spin_unlock_wait(lock) __raw_spin_unlock_wait(&(lock)->raw_lock) 4311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 4411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#include <linux/spinlock_api_up.h> 4511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 4611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define _raw_spin_lock(lock) __raw_spin_lock(&(lock)->raw_lock) 4711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define _raw_spin_lock_flags(lock, flags) __raw_spin_lock_flags(&(lock)->raw_lock, *(flags)) 4811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define _raw_spin_trylock(lock) __raw_spin_trylock(&(lock)->raw_lock) 4911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define _raw_spin_unlock(lock) __raw_spin_unlock(&(lock)->raw_lock) 5011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define _raw_read_lock(rwlock) __raw_read_lock(&(rwlock)->raw_lock) 5111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define _raw_read_trylock(rwlock) __raw_read_trylock(&(rwlock)->raw_lock) 5211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define _raw_read_unlock(rwlock) __raw_read_unlock(&(rwlock)->raw_lock) 5311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define _raw_write_lock(rwlock) __raw_write_lock(&(rwlock)->raw_lock) 5411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define _raw_write_trylock(rwlock) __raw_write_trylock(&(rwlock)->raw_lock) 5511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define _raw_write_unlock(rwlock) __raw_write_unlock(&(rwlock)->raw_lock) 5611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 5711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define read_can_lock(rwlock) __raw_read_can_lock(&(rwlock)->raw_lock) 5811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define write_can_lock(rwlock) __raw_write_can_lock(&(rwlock)->raw_lock) 5911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 6011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define spin_trylock(lock) __cond_lock(_spin_trylock(lock)) 6111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define read_trylock(lock) __cond_lock(_read_trylock(lock)) 6211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define write_trylock(lock) __cond_lock(_write_trylock(lock)) 6311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 6411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define spin_lock(lock) _spin_lock(lock) 6511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 6611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define spin_lock_nested(lock, subclass) _spin_lock(lock) 6711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 6811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define write_lock(lock) _write_lock(lock) 6911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define read_lock(lock) _read_lock(lock) 7011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 7111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define spin_lock_irqsave(lock, flags) _spin_lock_irqsave(lock, flags) 7211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define read_lock_irqsave(lock, flags) _read_lock_irqsave(lock, flags) 7311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define write_lock_irqsave(lock, flags) _write_lock_irqsave(lock, flags) 7411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 7511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define spin_lock_irq(lock) _spin_lock_irq(lock) 7611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define spin_lock_bh(lock) _spin_lock_bh(lock) 7711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 7811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define read_lock_irq(lock) _read_lock_irq(lock) 7911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define read_lock_bh(lock) _read_lock_bh(lock) 8011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 8111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define write_lock_irq(lock) _write_lock_irq(lock) 8211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define write_lock_bh(lock) _write_lock_bh(lock) 8311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 8411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define spin_unlock(lock) _spin_unlock(lock) 8511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define read_unlock(lock) _read_unlock(lock) 8611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define write_unlock(lock) _write_unlock(lock) 8711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define spin_unlock_irq(lock) _spin_unlock_irq(lock) 8811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define read_unlock_irq(lock) _read_unlock_irq(lock) 8911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define write_unlock_irq(lock) _write_unlock_irq(lock) 9011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 9111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define spin_unlock_irqrestore(lock, flags) _spin_unlock_irqrestore(lock, flags) 9211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define spin_unlock_bh(lock) _spin_unlock_bh(lock) 9311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 9411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define read_unlock_irqrestore(lock, flags) _read_unlock_irqrestore(lock, flags) 9511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define read_unlock_bh(lock) _read_unlock_bh(lock) 9611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 9711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define write_unlock_irqrestore(lock, flags) _write_unlock_irqrestore(lock, flags) 9811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define write_unlock_bh(lock) _write_unlock_bh(lock) 9911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 10011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define spin_trylock_bh(lock) __cond_lock(_spin_trylock_bh(lock)) 10111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 10211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define spin_trylock_irq(lock) ({ local_irq_disable(); _spin_trylock(lock) ? 1 : ({ local_irq_enable(); 0; }); }) 10311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 10411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define spin_trylock_irqsave(lock, flags) ({ local_irq_save(flags); _spin_trylock(lock) ? 1 : ({ local_irq_restore(flags); 0; }); }) 10511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 10611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#include <asm/atomic.h> 10711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 10811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define atomic_dec_and_lock(atomic, lock) __cond_lock(_atomic_dec_and_lock(atomic, lock)) 10911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 11011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define spin_can_lock(lock) (!spin_is_locked(lock)) 11111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 11211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#endif 113