1c817c5210e4207908b83faaf08a2c5b95251f871David 'Digit' Turner/**************************************************************************** 2c817c5210e4207908b83faaf08a2c5b95251f871David 'Digit' Turner **************************************************************************** 3c817c5210e4207908b83faaf08a2c5b95251f871David 'Digit' Turner *** 4c817c5210e4207908b83faaf08a2c5b95251f871David 'Digit' Turner *** This header was automatically generated from a Linux kernel header 5c817c5210e4207908b83faaf08a2c5b95251f871David 'Digit' Turner *** of the same name, to make information necessary for userspace to 6c817c5210e4207908b83faaf08a2c5b95251f871David 'Digit' Turner *** call into the kernel available to libc. It contains only constants, 7c817c5210e4207908b83faaf08a2c5b95251f871David 'Digit' Turner *** structures, and macros generated from the original header, and thus, 8c817c5210e4207908b83faaf08a2c5b95251f871David 'Digit' Turner *** contains no copyrightable information. 9c817c5210e4207908b83faaf08a2c5b95251f871David 'Digit' Turner *** 10c817c5210e4207908b83faaf08a2c5b95251f871David 'Digit' Turner **************************************************************************** 11c817c5210e4207908b83faaf08a2c5b95251f871David 'Digit' Turner ****************************************************************************/ 12c817c5210e4207908b83faaf08a2c5b95251f871David 'Digit' Turner#ifndef __ASM_SPINLOCK_H 13c817c5210e4207908b83faaf08a2c5b95251f871David 'Digit' Turner#define __ASM_SPINLOCK_H 14c817c5210e4207908b83faaf08a2c5b95251f871David 'Digit' Turner 15c817c5210e4207908b83faaf08a2c5b95251f871David 'Digit' Turner#if __LINUX_ARM_ARCH__ < 6 16c817c5210e4207908b83faaf08a2c5b95251f871David 'Digit' Turner#error SMP not supported on pre-ARMv6 CPUs 17c817c5210e4207908b83faaf08a2c5b95251f871David 'Digit' Turner#endif 18c817c5210e4207908b83faaf08a2c5b95251f871David 'Digit' Turner 19c817c5210e4207908b83faaf08a2c5b95251f871David 'Digit' Turner#define __raw_spin_is_locked(x) ((x)->lock != 0) 20c817c5210e4207908b83faaf08a2c5b95251f871David 'Digit' Turner#define __raw_spin_unlock_wait(lock) do { while (__raw_spin_is_locked(lock)) cpu_relax(); } while (0) 21c817c5210e4207908b83faaf08a2c5b95251f871David 'Digit' Turner 22c817c5210e4207908b83faaf08a2c5b95251f871David 'Digit' Turner#define __raw_spin_lock_flags(lock, flags) __raw_spin_lock(lock) 23c817c5210e4207908b83faaf08a2c5b95251f871David 'Digit' Turner 24c817c5210e4207908b83faaf08a2c5b95251f871David 'Digit' Turner#define rwlock_is_locked(x) (*((volatile unsigned int *)(x)) != 0) 25c817c5210e4207908b83faaf08a2c5b95251f871David 'Digit' Turner#define __raw_write_can_lock(x) ((x)->lock == 0x80000000) 26c817c5210e4207908b83faaf08a2c5b95251f871David 'Digit' Turner#define __raw_read_can_lock(x) ((x)->lock < 0x80000000) 27c817c5210e4207908b83faaf08a2c5b95251f871David 'Digit' Turner#endif 28