PAL.C.T MINI SHELL
/* -*- linux-c -*-
* Locking helper function api to support preempt-rt variant raw locks
* and keep legacy locking compatibility intact.
*
* Author: Santosh Shukla <sshukla@mvista.com>
*
* Copyright (C) 2014 Red Hat Inc.
*
* This file is part of systemtap, and is free software. You can
* redistribute it and/or modify it under the terms of the GNU General
* Public License (GPL); either version 2, or (at your option) any
* later version.
* */
#ifndef _STP_HELPER_LOCK_H_
#define _STP_HELPER_LOCK_H_
#include <linux/spinlock.h>
#ifdef CONFIG_PREEMPT_RT_FULL
#define stp_spinlock_t raw_spinlock_t
#define STP_DEFINE_SPINLOCK(lock) DEFINE_RAW_SPINLOCK(lock)
static inline void stp_spin_lock_init(raw_spinlock_t *lock) { raw_spin_lock_init(lock); }
static inline void stp_spin_lock(raw_spinlock_t *lock) { raw_spin_lock(lock); }
static inline void stp_spin_unlock(raw_spinlock_t *lock) { raw_spin_unlock(lock); }
static inline void stp_spin_unlock_wait(raw_spinlock_t *lock) { raw_spin_unlock_wait(lock); }
#define stp_spin_lock_irqsave(lock, flags) raw_spin_lock_irqsave(lock, flags)
#define stp_spin_unlock_irqrestore(lock, flags) raw_spin_unlock_irqrestore(lock, flags)
#define STP_DEFINE_RWLOCK(lock) DEFINE_RAW_SPINLOCK(lock)
static inline void stp_read_lock(raw_spinlock_t *lock) { raw_spin_lock(lock); }
static inline void stp_read_unlock(raw_spinlock_t *lock) { raw_spin_unlock(lock); }
static inline void stp_write_lock(raw_spinlock_t *lock) { raw_spin_lock(lock); }
static inline void stp_write_unlock(raw_spinlock_t *lock) { raw_spin_unlock(lock); }
#define stp_read_lock_irqsave(lock, flags) raw_spin_lock_irqsave(lock, flags)
#define stp_read_unlock_irqrestore(lock, flags) raw_spin_unlock_irqrestore(lock, flags)
#define stp_write_lock_irqsave(lock, flags) raw_spin_lock_irqsave(lock, flags)
#define stp_write_unlock_irqrestore(lock, flags) raw_spin_unlock_irqrestore(lock, flags)
#else
#define stp_spinlock_t spinlock_t
#define STP_DEFINE_SPINLOCK(lock) DEFINE_SPINLOCK(lock)
static inline void stp_spin_lock_init(spinlock_t *lock) { spin_lock_init(lock); }
static inline void stp_spin_lock(spinlock_t *lock) { spin_lock(lock); }
static inline void stp_spin_unlock(spinlock_t *lock) { spin_unlock(lock); }
static inline void stp_spin_unlock_wait(spinlock_t *lock) { spin_unlock_wait(lock); }
#define stp_spin_lock_irqsave(lock, flags) spin_lock_irqsave(lock, flags)
#define stp_spin_unlock_irqrestore(lock, flags) spin_unlock_irqrestore(lock, flags)
#define STP_DEFINE_RWLOCK(lock) DEFINE_RWLOCK(lock)
static inline void stp_read_lock(rwlock_t *lock) { read_lock(lock); }
static inline void stp_read_unlock(rwlock_t *lock) { read_unlock(lock); }
static inline void stp_write_lock(rwlock_t *lock) { write_lock(lock); }
static inline void stp_write_unlock(rwlock_t *lock) { write_unlock(lock); }
#define stp_read_lock_irqsave(lock, flags) read_lock_irqsave(lock, flags)
#define stp_read_unlock_irqrestore(lock, flags) read_unlock_irqrestore(lock, flags)
#define stp_write_lock_irqsave(lock, flags) write_lock_irqsave(lock, flags)
#define stp_write_unlock_irqrestore(lock, flags) write_unlock_irqrestore(lock, flags)
#endif
#endif /* _STP_HELPER_LOCK_H_ */
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