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author | The Android Open Source Project <initial-contribution@android.com> | 2009-03-03 19:28:35 -0800 |
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committer | The Android Open Source Project <initial-contribution@android.com> | 2009-03-03 19:28:35 -0800 |
commit | 1dc9e472e19acfe6dc7f41e429236e7eef7ceda1 (patch) | |
tree | 3be0c520fae17689bbf5584e1136fb820caef26f /libc/kernel/common/linux/spinlock.h | |
parent | 1767f908af327fa388b1c66883760ad851267013 (diff) | |
download | bionic-1dc9e472e19acfe6dc7f41e429236e7eef7ceda1.zip bionic-1dc9e472e19acfe6dc7f41e429236e7eef7ceda1.tar.gz bionic-1dc9e472e19acfe6dc7f41e429236e7eef7ceda1.tar.bz2 |
auto import from //depot/cupcake/@135843
Diffstat (limited to 'libc/kernel/common/linux/spinlock.h')
-rw-r--r-- | libc/kernel/common/linux/spinlock.h | 112 |
1 files changed, 112 insertions, 0 deletions
diff --git a/libc/kernel/common/linux/spinlock.h b/libc/kernel/common/linux/spinlock.h new file mode 100644 index 0000000..5504c9e --- /dev/null +++ b/libc/kernel/common/linux/spinlock.h @@ -0,0 +1,112 @@ +/**************************************************************************** + **************************************************************************** + *** + *** This header was automatically generated from a Linux kernel header + *** of the same name, to make information necessary for userspace to + *** call into the kernel available to libc. It contains only constants, + *** structures, and macros generated from the original header, and thus, + *** contains no copyrightable information. + *** + **************************************************************************** + ****************************************************************************/ +#ifndef __LINUX_SPINLOCK_H +#define __LINUX_SPINLOCK_H + +#include <linux/preempt.h> +#include <linux/linkage.h> +#include <linux/compiler.h> +#include <linux/thread_info.h> +#include <linux/kernel.h> +#include <linux/stringify.h> + +#include <asm/system.h> + +#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 fastcall __attribute__((section(".spinlock.text"))) + +#include <linux/spinlock_types.h> + +#include <linux/spinlock_up.h> + +#define spin_lock_init(lock) do { *(lock) = SPIN_LOCK_UNLOCKED; } while (0) + +#define rwlock_init(lock) do { *(lock) = RW_LOCK_UNLOCKED; } while (0) + +#define spin_is_locked(lock) __raw_spin_is_locked(&(lock)->raw_lock) + +#define spin_unlock_wait(lock) __raw_spin_unlock_wait(&(lock)->raw_lock) + +#include <linux/spinlock_api_up.h> + +#define _raw_spin_lock(lock) __raw_spin_lock(&(lock)->raw_lock) +#define _raw_spin_lock_flags(lock, flags) __raw_spin_lock_flags(&(lock)->raw_lock, *(flags)) +#define _raw_spin_trylock(lock) __raw_spin_trylock(&(lock)->raw_lock) +#define _raw_spin_unlock(lock) __raw_spin_unlock(&(lock)->raw_lock) +#define _raw_read_lock(rwlock) __raw_read_lock(&(rwlock)->raw_lock) +#define _raw_read_trylock(rwlock) __raw_read_trylock(&(rwlock)->raw_lock) +#define _raw_read_unlock(rwlock) __raw_read_unlock(&(rwlock)->raw_lock) +#define _raw_write_lock(rwlock) __raw_write_lock(&(rwlock)->raw_lock) +#define _raw_write_trylock(rwlock) __raw_write_trylock(&(rwlock)->raw_lock) +#define _raw_write_unlock(rwlock) __raw_write_unlock(&(rwlock)->raw_lock) + +#define read_can_lock(rwlock) __raw_read_can_lock(&(rwlock)->raw_lock) +#define write_can_lock(rwlock) __raw_write_can_lock(&(rwlock)->raw_lock) + +#define spin_trylock(lock) __cond_lock(_spin_trylock(lock)) +#define read_trylock(lock) __cond_lock(_read_trylock(lock)) +#define write_trylock(lock) __cond_lock(_write_trylock(lock)) + +#define spin_lock(lock) _spin_lock(lock) + +#define spin_lock_nested(lock, subclass) _spin_lock(lock) + +#define write_lock(lock) _write_lock(lock) +#define read_lock(lock) _read_lock(lock) + +#define spin_lock_irqsave(lock, flags) _spin_lock_irqsave(lock, flags) +#define read_lock_irqsave(lock, flags) _read_lock_irqsave(lock, flags) +#define write_lock_irqsave(lock, flags) _write_lock_irqsave(lock, flags) + +#define spin_lock_irq(lock) _spin_lock_irq(lock) +#define spin_lock_bh(lock) _spin_lock_bh(lock) + +#define read_lock_irq(lock) _read_lock_irq(lock) +#define read_lock_bh(lock) _read_lock_bh(lock) + +#define write_lock_irq(lock) _write_lock_irq(lock) +#define write_lock_bh(lock) _write_lock_bh(lock) + +#define spin_unlock(lock) _spin_unlock(lock) +#define read_unlock(lock) _read_unlock(lock) +#define write_unlock(lock) _write_unlock(lock) +#define spin_unlock_irq(lock) _spin_unlock_irq(lock) +#define read_unlock_irq(lock) _read_unlock_irq(lock) +#define write_unlock_irq(lock) _write_unlock_irq(lock) + +#define spin_unlock_irqrestore(lock, flags) _spin_unlock_irqrestore(lock, flags) +#define spin_unlock_bh(lock) _spin_unlock_bh(lock) + +#define read_unlock_irqrestore(lock, flags) _read_unlock_irqrestore(lock, flags) +#define read_unlock_bh(lock) _read_unlock_bh(lock) + +#define write_unlock_irqrestore(lock, flags) _write_unlock_irqrestore(lock, flags) +#define write_unlock_bh(lock) _write_unlock_bh(lock) + +#define spin_trylock_bh(lock) __cond_lock(_spin_trylock_bh(lock)) + +#define spin_trylock_irq(lock) ({ local_irq_disable(); _spin_trylock(lock) ? 1 : ({ local_irq_enable(); 0; }); }) + +#define spin_trylock_irqsave(lock, flags) ({ local_irq_save(flags); _spin_trylock(lock) ? 1 : ({ local_irq_restore(flags); 0; }); }) + +#include <asm/atomic.h> + +#define atomic_dec_and_lock(atomic, lock) __cond_lock(_atomic_dec_and_lock(atomic, lock)) + +#define spin_can_lock(lock) (!spin_is_locked(lock)) + +#endif |