1951a39d68df598db08dfced8b4707755864a0492Ying Wang/**************************************************************************** 2951a39d68df598db08dfced8b4707755864a0492Ying Wang **************************************************************************** 3951a39d68df598db08dfced8b4707755864a0492Ying Wang *** 4951a39d68df598db08dfced8b4707755864a0492Ying Wang *** This header was automatically generated from a Linux kernel header 5951a39d68df598db08dfced8b4707755864a0492Ying Wang *** of the same name, to make information necessary for userspace to 6951a39d68df598db08dfced8b4707755864a0492Ying Wang *** call into the kernel available to libc. It contains only constants, 7951a39d68df598db08dfced8b4707755864a0492Ying Wang *** structures, and macros generated from the original header, and thus, 8951a39d68df598db08dfced8b4707755864a0492Ying Wang *** contains no copyrightable information. 9951a39d68df598db08dfced8b4707755864a0492Ying Wang *** 10951a39d68df598db08dfced8b4707755864a0492Ying Wang **************************************************************************** 11951a39d68df598db08dfced8b4707755864a0492Ying Wang ****************************************************************************/ 12951a39d68df598db08dfced8b4707755864a0492Ying Wang#ifndef __LINUX_SPINLOCK_H 13951a39d68df598db08dfced8b4707755864a0492Ying Wang#define __LINUX_SPINLOCK_H 14951a39d68df598db08dfced8b4707755864a0492Ying Wang 15951a39d68df598db08dfced8b4707755864a0492Ying Wang#include <linux/preempt.h> 16951a39d68df598db08dfced8b4707755864a0492Ying Wang#include <linux/linkage.h> 17951a39d68df598db08dfced8b4707755864a0492Ying Wang#include <linux/compiler.h> 18951a39d68df598db08dfced8b4707755864a0492Ying Wang#include <linux/thread_info.h> 19951a39d68df598db08dfced8b4707755864a0492Ying Wang#include <linux/kernel.h> 20951a39d68df598db08dfced8b4707755864a0492Ying Wang#include <linux/stringify.h> 21951a39d68df598db08dfced8b4707755864a0492Ying Wang 22951a39d68df598db08dfced8b4707755864a0492Ying Wang#include <asm/system.h> 23951a39d68df598db08dfced8b4707755864a0492Ying Wang 24951a39d68df598db08dfced8b4707755864a0492Ying Wang#define LOCK_SECTION_NAME ".text.lock."KBUILD_BASENAME 25951a39d68df598db08dfced8b4707755864a0492Ying Wang 26951a39d68df598db08dfced8b4707755864a0492Ying Wang#define LOCK_SECTION_START(extra) ".subsection 1\n\t" extra ".ifndef " LOCK_SECTION_NAME "\n\t" LOCK_SECTION_NAME ":\n\t" ".endif\n" 27951a39d68df598db08dfced8b4707755864a0492Ying Wang 28951a39d68df598db08dfced8b4707755864a0492Ying Wang#define LOCK_SECTION_END ".previous\n\t" 29951a39d68df598db08dfced8b4707755864a0492Ying Wang 30951a39d68df598db08dfced8b4707755864a0492Ying Wang#define __lockfunc fastcall __attribute__((section(".spinlock.text"))) 31951a39d68df598db08dfced8b4707755864a0492Ying Wang 32951a39d68df598db08dfced8b4707755864a0492Ying Wang#include <linux/spinlock_types.h> 33951a39d68df598db08dfced8b4707755864a0492Ying Wang 34951a39d68df598db08dfced8b4707755864a0492Ying Wang#include <linux/spinlock_up.h> 35951a39d68df598db08dfced8b4707755864a0492Ying Wang 36951a39d68df598db08dfced8b4707755864a0492Ying Wang#define spin_lock_init(lock) do { *(lock) = SPIN_LOCK_UNLOCKED; } while (0) 37951a39d68df598db08dfced8b4707755864a0492Ying Wang 38951a39d68df598db08dfced8b4707755864a0492Ying Wang#define rwlock_init(lock) do { *(lock) = RW_LOCK_UNLOCKED; } while (0) 39951a39d68df598db08dfced8b4707755864a0492Ying Wang 40951a39d68df598db08dfced8b4707755864a0492Ying Wang#define spin_is_locked(lock) __raw_spin_is_locked(&(lock)->raw_lock) 41951a39d68df598db08dfced8b4707755864a0492Ying Wang 42951a39d68df598db08dfced8b4707755864a0492Ying Wang#define spin_unlock_wait(lock) __raw_spin_unlock_wait(&(lock)->raw_lock) 43951a39d68df598db08dfced8b4707755864a0492Ying Wang 44951a39d68df598db08dfced8b4707755864a0492Ying Wang#include <linux/spinlock_api_up.h> 45951a39d68df598db08dfced8b4707755864a0492Ying Wang 46951a39d68df598db08dfced8b4707755864a0492Ying Wang#define _raw_spin_lock(lock) __raw_spin_lock(&(lock)->raw_lock) 47951a39d68df598db08dfced8b4707755864a0492Ying Wang#define _raw_spin_lock_flags(lock, flags) __raw_spin_lock_flags(&(lock)->raw_lock, *(flags)) 48951a39d68df598db08dfced8b4707755864a0492Ying Wang#define _raw_spin_trylock(lock) __raw_spin_trylock(&(lock)->raw_lock) 49951a39d68df598db08dfced8b4707755864a0492Ying Wang#define _raw_spin_unlock(lock) __raw_spin_unlock(&(lock)->raw_lock) 50951a39d68df598db08dfced8b4707755864a0492Ying Wang#define _raw_read_lock(rwlock) __raw_read_lock(&(rwlock)->raw_lock) 51951a39d68df598db08dfced8b4707755864a0492Ying Wang#define _raw_read_trylock(rwlock) __raw_read_trylock(&(rwlock)->raw_lock) 52951a39d68df598db08dfced8b4707755864a0492Ying Wang#define _raw_read_unlock(rwlock) __raw_read_unlock(&(rwlock)->raw_lock) 53951a39d68df598db08dfced8b4707755864a0492Ying Wang#define _raw_write_lock(rwlock) __raw_write_lock(&(rwlock)->raw_lock) 54951a39d68df598db08dfced8b4707755864a0492Ying Wang#define _raw_write_trylock(rwlock) __raw_write_trylock(&(rwlock)->raw_lock) 55951a39d68df598db08dfced8b4707755864a0492Ying Wang#define _raw_write_unlock(rwlock) __raw_write_unlock(&(rwlock)->raw_lock) 56951a39d68df598db08dfced8b4707755864a0492Ying Wang 57951a39d68df598db08dfced8b4707755864a0492Ying Wang#define read_can_lock(rwlock) __raw_read_can_lock(&(rwlock)->raw_lock) 58951a39d68df598db08dfced8b4707755864a0492Ying Wang#define write_can_lock(rwlock) __raw_write_can_lock(&(rwlock)->raw_lock) 59951a39d68df598db08dfced8b4707755864a0492Ying Wang 60951a39d68df598db08dfced8b4707755864a0492Ying Wang#define spin_trylock(lock) __cond_lock(_spin_trylock(lock)) 61951a39d68df598db08dfced8b4707755864a0492Ying Wang#define read_trylock(lock) __cond_lock(_read_trylock(lock)) 62951a39d68df598db08dfced8b4707755864a0492Ying Wang#define write_trylock(lock) __cond_lock(_write_trylock(lock)) 63951a39d68df598db08dfced8b4707755864a0492Ying Wang 64951a39d68df598db08dfced8b4707755864a0492Ying Wang#define spin_lock(lock) _spin_lock(lock) 65951a39d68df598db08dfced8b4707755864a0492Ying Wang 66951a39d68df598db08dfced8b4707755864a0492Ying Wang#define spin_lock_nested(lock, subclass) _spin_lock(lock) 67951a39d68df598db08dfced8b4707755864a0492Ying Wang 68951a39d68df598db08dfced8b4707755864a0492Ying Wang#define write_lock(lock) _write_lock(lock) 69951a39d68df598db08dfced8b4707755864a0492Ying Wang#define read_lock(lock) _read_lock(lock) 70951a39d68df598db08dfced8b4707755864a0492Ying Wang 71951a39d68df598db08dfced8b4707755864a0492Ying Wang#define spin_lock_irqsave(lock, flags) _spin_lock_irqsave(lock, flags) 72951a39d68df598db08dfced8b4707755864a0492Ying Wang#define read_lock_irqsave(lock, flags) _read_lock_irqsave(lock, flags) 73951a39d68df598db08dfced8b4707755864a0492Ying Wang#define write_lock_irqsave(lock, flags) _write_lock_irqsave(lock, flags) 74951a39d68df598db08dfced8b4707755864a0492Ying Wang 75951a39d68df598db08dfced8b4707755864a0492Ying Wang#define spin_lock_irq(lock) _spin_lock_irq(lock) 76951a39d68df598db08dfced8b4707755864a0492Ying Wang#define spin_lock_bh(lock) _spin_lock_bh(lock) 77951a39d68df598db08dfced8b4707755864a0492Ying Wang 78951a39d68df598db08dfced8b4707755864a0492Ying Wang#define read_lock_irq(lock) _read_lock_irq(lock) 79951a39d68df598db08dfced8b4707755864a0492Ying Wang#define read_lock_bh(lock) _read_lock_bh(lock) 80951a39d68df598db08dfced8b4707755864a0492Ying Wang 81951a39d68df598db08dfced8b4707755864a0492Ying Wang#define write_lock_irq(lock) _write_lock_irq(lock) 82951a39d68df598db08dfced8b4707755864a0492Ying Wang#define write_lock_bh(lock) _write_lock_bh(lock) 83951a39d68df598db08dfced8b4707755864a0492Ying Wang 84951a39d68df598db08dfced8b4707755864a0492Ying Wang#define spin_unlock(lock) _spin_unlock(lock) 85951a39d68df598db08dfced8b4707755864a0492Ying Wang#define read_unlock(lock) _read_unlock(lock) 86951a39d68df598db08dfced8b4707755864a0492Ying Wang#define write_unlock(lock) _write_unlock(lock) 87951a39d68df598db08dfced8b4707755864a0492Ying Wang#define spin_unlock_irq(lock) _spin_unlock_irq(lock) 88951a39d68df598db08dfced8b4707755864a0492Ying Wang#define read_unlock_irq(lock) _read_unlock_irq(lock) 89951a39d68df598db08dfced8b4707755864a0492Ying Wang#define write_unlock_irq(lock) _write_unlock_irq(lock) 90951a39d68df598db08dfced8b4707755864a0492Ying Wang 91951a39d68df598db08dfced8b4707755864a0492Ying Wang#define spin_unlock_irqrestore(lock, flags) _spin_unlock_irqrestore(lock, flags) 92951a39d68df598db08dfced8b4707755864a0492Ying Wang#define spin_unlock_bh(lock) _spin_unlock_bh(lock) 93951a39d68df598db08dfced8b4707755864a0492Ying Wang 94951a39d68df598db08dfced8b4707755864a0492Ying Wang#define read_unlock_irqrestore(lock, flags) _read_unlock_irqrestore(lock, flags) 95951a39d68df598db08dfced8b4707755864a0492Ying Wang#define read_unlock_bh(lock) _read_unlock_bh(lock) 96951a39d68df598db08dfced8b4707755864a0492Ying Wang 97951a39d68df598db08dfced8b4707755864a0492Ying Wang#define write_unlock_irqrestore(lock, flags) _write_unlock_irqrestore(lock, flags) 98951a39d68df598db08dfced8b4707755864a0492Ying Wang#define write_unlock_bh(lock) _write_unlock_bh(lock) 99951a39d68df598db08dfced8b4707755864a0492Ying Wang 100951a39d68df598db08dfced8b4707755864a0492Ying Wang#define spin_trylock_bh(lock) __cond_lock(_spin_trylock_bh(lock)) 101951a39d68df598db08dfced8b4707755864a0492Ying Wang 102951a39d68df598db08dfced8b4707755864a0492Ying Wang#define spin_trylock_irq(lock) ({ local_irq_disable(); _spin_trylock(lock) ? 1 : ({ local_irq_enable(); 0; }); }) 103951a39d68df598db08dfced8b4707755864a0492Ying Wang 104951a39d68df598db08dfced8b4707755864a0492Ying Wang#define spin_trylock_irqsave(lock, flags) ({ local_irq_save(flags); _spin_trylock(lock) ? 1 : ({ local_irq_restore(flags); 0; }); }) 105951a39d68df598db08dfced8b4707755864a0492Ying Wang 106951a39d68df598db08dfced8b4707755864a0492Ying Wang#include <asm/atomic.h> 107951a39d68df598db08dfced8b4707755864a0492Ying Wang 108951a39d68df598db08dfced8b4707755864a0492Ying Wang#define atomic_dec_and_lock(atomic, lock) __cond_lock(_atomic_dec_and_lock(atomic, lock)) 109951a39d68df598db08dfced8b4707755864a0492Ying Wang 110951a39d68df598db08dfced8b4707755864a0492Ying Wang#define spin_can_lock(lock) (!spin_is_locked(lock)) 111951a39d68df598db08dfced8b4707755864a0492Ying Wang 112951a39d68df598db08dfced8b4707755864a0492Ying Wang#endif 113