From 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 Mon Sep 17 00:00:00 2001 From: Yunhong Jiang Date: Tue, 4 Aug 2015 12:17:53 -0700 Subject: Add the rt linux 4.1.3-rt3 as base Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang --- kernel/include/linux/rwlock_api_smp.h | 278 ++++++++++++++++++++++++++++++++++ 1 file changed, 278 insertions(+) create mode 100644 kernel/include/linux/rwlock_api_smp.h (limited to 'kernel/include/linux/rwlock_api_smp.h') diff --git a/kernel/include/linux/rwlock_api_smp.h b/kernel/include/linux/rwlock_api_smp.h new file mode 100644 index 000000000..5b9b84b20 --- /dev/null +++ b/kernel/include/linux/rwlock_api_smp.h @@ -0,0 +1,278 @@ +#ifndef __LINUX_RWLOCK_API_SMP_H +#define __LINUX_RWLOCK_API_SMP_H + +#ifndef __LINUX_SPINLOCK_API_SMP_H +# error "please don't include this file directly" +#endif + +/* + * include/linux/rwlock_api_smp.h + * + * spinlock API declarations on SMP (and debug) + * (implemented in kernel/spinlock.c) + * + * portions Copyright 2005, Red Hat, Inc., Ingo Molnar + * Released under the General Public License (GPL). + */ + +void __lockfunc _raw_read_lock(rwlock_t *lock) __acquires(lock); +void __lockfunc _raw_write_lock(rwlock_t *lock) __acquires(lock); +void __lockfunc _raw_read_lock_bh(rwlock_t *lock) __acquires(lock); +void __lockfunc _raw_write_lock_bh(rwlock_t *lock) __acquires(lock); +void __lockfunc _raw_read_lock_irq(rwlock_t *lock) __acquires(lock); +void __lockfunc _raw_write_lock_irq(rwlock_t *lock) __acquires(lock); +unsigned long __lockfunc _raw_read_lock_irqsave(rwlock_t *lock) + __acquires(lock); +unsigned long __lockfunc _raw_write_lock_irqsave(rwlock_t *lock) + __acquires(lock); +int __lockfunc _raw_read_trylock(rwlock_t *lock); +int __lockfunc _raw_write_trylock(rwlock_t *lock); +void __lockfunc _raw_read_unlock(rwlock_t *lock) __releases(lock); +void __lockfunc _raw_write_unlock(rwlock_t *lock) __releases(lock); +void __lockfunc _raw_read_unlock_bh(rwlock_t *lock) __releases(lock); +void __lockfunc _raw_write_unlock_bh(rwlock_t *lock) __releases(lock); +void __lockfunc _raw_read_unlock_irq(rwlock_t *lock) __releases(lock); +void __lockfunc _raw_write_unlock_irq(rwlock_t *lock) __releases(lock); +void __lockfunc +_raw_read_unlock_irqrestore(rwlock_t *lock, unsigned long flags) + __releases(lock); +void __lockfunc +_raw_write_unlock_irqrestore(rwlock_t *lock, unsigned long flags) + __releases(lock); + +#ifdef CONFIG_INLINE_READ_LOCK +#define _raw_read_lock(lock) __raw_read_lock(lock) +#endif + +#ifdef CONFIG_INLINE_WRITE_LOCK +#define _raw_write_lock(lock) __raw_write_lock(lock) +#endif + +#ifdef CONFIG_INLINE_READ_LOCK_BH +#define _raw_read_lock_bh(lock) __raw_read_lock_bh(lock) +#endif + +#ifdef CONFIG_INLINE_WRITE_LOCK_BH +#define _raw_write_lock_bh(lock) __raw_write_lock_bh(lock) +#endif + +#ifdef CONFIG_INLINE_READ_LOCK_IRQ +#define _raw_read_lock_irq(lock) __raw_read_lock_irq(lock) +#endif + +#ifdef CONFIG_INLINE_WRITE_LOCK_IRQ +#define _raw_write_lock_irq(lock) __raw_write_lock_irq(lock) +#endif + +#ifdef CONFIG_INLINE_READ_LOCK_IRQSAVE +#define _raw_read_lock_irqsave(lock) __raw_read_lock_irqsave(lock) +#endif + +#ifdef CONFIG_INLINE_WRITE_LOCK_IRQSAVE +#define _raw_write_lock_irqsave(lock) __raw_write_lock_irqsave(lock) +#endif + +#ifdef CONFIG_INLINE_READ_TRYLOCK +#define _raw_read_trylock(lock) __raw_read_trylock(lock) +#endif + +#ifdef CONFIG_INLINE_WRITE_TRYLOCK +#define _raw_write_trylock(lock) __raw_write_trylock(lock) +#endif + +#ifdef CONFIG_INLINE_READ_UNLOCK +#define _raw_read_unlock(lock) __raw_read_unlock(lock) +#endif + +#ifdef CONFIG_INLINE_WRITE_UNLOCK +#define _raw_write_unlock(lock) __raw_write_unlock(lock) +#endif + +#ifdef CONFIG_INLINE_READ_UNLOCK_BH +#define _raw_read_unlock_bh(lock) __raw_read_unlock_bh(lock) +#endif + +#ifdef CONFIG_INLINE_WRITE_UNLOCK_BH +#define _raw_write_unlock_bh(lock) __raw_write_unlock_bh(lock) +#endif + +#ifdef CONFIG_INLINE_READ_UNLOCK_IRQ +#define _raw_read_unlock_irq(lock) __raw_read_unlock_irq(lock) +#endif + +#ifdef CONFIG_INLINE_WRITE_UNLOCK_IRQ +#define _raw_write_unlock_irq(lock) __raw_write_unlock_irq(lock) +#endif + +#ifdef CONFIG_INLINE_READ_UNLOCK_IRQRESTORE +#define _raw_read_unlock_irqrestore(lock, flags) \ + __raw_read_unlock_irqrestore(lock, flags) +#endif + +#ifdef CONFIG_INLINE_WRITE_UNLOCK_IRQRESTORE +#define _raw_write_unlock_irqrestore(lock, flags) \ + __raw_write_unlock_irqrestore(lock, flags) +#endif + +static inline int __raw_read_trylock(rwlock_t *lock) +{ + preempt_disable(); + if (do_raw_read_trylock(lock)) { + rwlock_acquire_read(&lock->dep_map, 0, 1, _RET_IP_); + return 1; + } + preempt_enable(); + return 0; +} + +static inline int __raw_write_trylock(rwlock_t *lock) +{ + preempt_disable(); + if (do_raw_write_trylock(lock)) { + rwlock_acquire(&lock->dep_map, 0, 1, _RET_IP_); + return 1; + } + preempt_enable(); + return 0; +} + +/* + * If lockdep is enabled then we use the non-preemption spin-ops + * even on CONFIG_PREEMPT, because lockdep assumes that interrupts are + * not re-enabled during lock-acquire (which the preempt-spin-ops do): + */ +#if !defined(CONFIG_GENERIC_LOCKBREAK) || defined(CONFIG_DEBUG_LOCK_ALLOC) + +static inline void __raw_read_lock(rwlock_t *lock) +{ + preempt_disable(); + rwlock_acquire_read(&lock->dep_map, 0, 0, _RET_IP_); + LOCK_CONTENDED(lock, do_raw_read_trylock, do_raw_read_lock); +} + +static inline unsigned long __raw_read_lock_irqsave(rwlock_t *lock) +{ + unsigned long flags; + + local_irq_save(flags); + preempt_disable(); + rwlock_acquire_read(&lock->dep_map, 0, 0, _RET_IP_); + LOCK_CONTENDED_FLAGS(lock, do_raw_read_trylock, do_raw_read_lock, + do_raw_read_lock_flags, &flags); + return flags; +} + +static inline void __raw_read_lock_irq(rwlock_t *lock) +{ + local_irq_disable(); + preempt_disable(); + rwlock_acquire_read(&lock->dep_map, 0, 0, _RET_IP_); + LOCK_CONTENDED(lock, do_raw_read_trylock, do_raw_read_lock); +} + +static inline void __raw_read_lock_bh(rwlock_t *lock) +{ + __local_bh_disable_ip(_RET_IP_, SOFTIRQ_LOCK_OFFSET); + rwlock_acquire_read(&lock->dep_map, 0, 0, _RET_IP_); + LOCK_CONTENDED(lock, do_raw_read_trylock, do_raw_read_lock); +} + +static inline unsigned long __raw_write_lock_irqsave(rwlock_t *lock) +{ + unsigned long flags; + + local_irq_save(flags); + preempt_disable(); + rwlock_acquire(&lock->dep_map, 0, 0, _RET_IP_); + LOCK_CONTENDED_FLAGS(lock, do_raw_write_trylock, do_raw_write_lock, + do_raw_write_lock_flags, &flags); + return flags; +} + +static inline void __raw_write_lock_irq(rwlock_t *lock) +{ + local_irq_disable(); + preempt_disable(); + rwlock_acquire(&lock->dep_map, 0, 0, _RET_IP_); + LOCK_CONTENDED(lock, do_raw_write_trylock, do_raw_write_lock); +} + +static inline void __raw_write_lock_bh(rwlock_t *lock) +{ + __local_bh_disable_ip(_RET_IP_, SOFTIRQ_LOCK_OFFSET); + rwlock_acquire(&lock->dep_map, 0, 0, _RET_IP_); + LOCK_CONTENDED(lock, do_raw_write_trylock, do_raw_write_lock); +} + +static inline void __raw_write_lock(rwlock_t *lock) +{ + preempt_disable(); + rwlock_acquire(&lock->dep_map, 0, 0, _RET_IP_); + LOCK_CONTENDED(lock, do_raw_write_trylock, do_raw_write_lock); +} + +#endif /* CONFIG_PREEMPT */ + +static inline void __raw_write_unlock(rwlock_t *lock) +{ + rwlock_release(&lock->dep_map, 1, _RET_IP_); + do_raw_write_unlock(lock); + preempt_enable(); +} + +static inline void __raw_read_unlock(rwlock_t *lock) +{ + rwlock_release(&lock->dep_map, 1, _RET_IP_); + do_raw_read_unlock(lock); + preempt_enable(); +} + +static inline void +__raw_read_unlock_irqrestore(rwlock_t *lock, unsigned long flags) +{ + rwlock_release(&lock->dep_map, 1, _RET_IP_); + do_raw_read_unlock(lock); + local_irq_restore(flags); + preempt_enable(); +} + +static inline void __raw_read_unlock_irq(rwlock_t *lock) +{ + rwlock_release(&lock->dep_map, 1, _RET_IP_); + do_raw_read_unlock(lock); + local_irq_enable(); + preempt_enable(); +} + +static inline void __raw_read_unlock_bh(rwlock_t *lock) +{ + rwlock_release(&lock->dep_map, 1, _RET_IP_); + do_raw_read_unlock(lock); + __local_bh_enable_ip(_RET_IP_, SOFTIRQ_LOCK_OFFSET); +} + +static inline void __raw_write_unlock_irqrestore(rwlock_t *lock, + unsigned long flags) +{ + rwlock_release(&lock->dep_map, 1, _RET_IP_); + do_raw_write_unlock(lock); + local_irq_restore(flags); + preempt_enable(); +} + +static inline void __raw_write_unlock_irq(rwlock_t *lock) +{ + rwlock_release(&lock->dep_map, 1, _RET_IP_); + do_raw_write_unlock(lock); + local_irq_enable(); + preempt_enable(); +} + +static inline void __raw_write_unlock_bh(rwlock_t *lock) +{ + rwlock_release(&lock->dep_map, 1, _RET_IP_); + do_raw_write_unlock(lock); + __local_bh_enable_ip(_RET_IP_, SOFTIRQ_LOCK_OFFSET); +} + +#endif /* __LINUX_RWLOCK_API_SMP_H */ -- cgit 1.2.3-korg