From a27d2baa0c1a2ec70f47ea9199b1dd6762c8a349 Mon Sep 17 00:00:00 2001 From: The Android Open Source Project Date: Tue, 21 Oct 2008 07:00:00 -0700 Subject: Initial Contribution --- libc/kernel/common/linux/spinlock_up.h | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+) create mode 100644 libc/kernel/common/linux/spinlock_up.h (limited to 'libc/kernel/common/linux/spinlock_up.h') diff --git a/libc/kernel/common/linux/spinlock_up.h b/libc/kernel/common/linux/spinlock_up.h new file mode 100644 index 0000000..b4958dc --- /dev/null +++ b/libc/kernel/common/linux/spinlock_up.h @@ -0,0 +1,30 @@ +/**************************************************************************** + **************************************************************************** + *** + *** 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_UP_H +#define __LINUX_SPINLOCK_UP_H + +#ifndef __LINUX_SPINLOCK_H +#error "please don't include this file directly" +#endif + +#define __raw_spin_is_locked(lock) ((void)(lock), 0) + +#define __raw_spin_lock(lock) do { (void)(lock); } while (0) +#define __raw_spin_unlock(lock) do { (void)(lock); } while (0) +#define __raw_spin_trylock(lock) ({ (void)(lock); 1; }) + +#define __raw_read_can_lock(lock) (((void)(lock), 1)) +#define __raw_write_can_lock(lock) (((void)(lock), 1)) + +#define __raw_spin_unlock_wait(lock) do { cpu_relax(); } while (__raw_spin_is_locked(lock)) + +#endif -- cgit v1.1