diff options
Diffstat (limited to 'include/linux/rwsem_compat.h')
| -rw-r--r-- | include/linux/rwsem_compat.h | 68 |
1 files changed, 0 insertions, 68 deletions
diff --git a/include/linux/rwsem_compat.h b/include/linux/rwsem_compat.h deleted file mode 100644 index 7a0dcf8dc..000000000 --- a/include/linux/rwsem_compat.h +++ /dev/null @@ -1,68 +0,0 @@ -/* - * Copyright (C) 2007-2010 Lawrence Livermore National Security, LLC. - * Copyright (C) 2007 The Regents of the University of California. - * Produced at Lawrence Livermore National Laboratory (cf, DISCLAIMER). - * Written by Brian Behlendorf <[email protected]>. - * UCRL-CODE-235197 - * - * This file is part of the SPL, Solaris Porting Layer. - * For details, see <http://zfsonlinux.org/>. - * - * The SPL is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. - * - * The SPL is distributed in the hope that it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License - * for more details. - * - * You should have received a copy of the GNU General Public License along - * with the SPL. If not, see <http://www.gnu.org/licenses/>. - */ - -#ifndef _SPL_RWSEM_COMPAT_H -#define _SPL_RWSEM_COMPAT_H - -#include <linux/rwsem.h> - -#if defined(CONFIG_PREEMPT_RT_FULL) -#define SPL_RWSEM_SINGLE_READER_VALUE (1) -#define SPL_RWSEM_SINGLE_WRITER_VALUE (0) -#elif defined(CONFIG_RWSEM_GENERIC_SPINLOCK) -#define SPL_RWSEM_SINGLE_READER_VALUE (1) -#define SPL_RWSEM_SINGLE_WRITER_VALUE (-1) -#else -#define SPL_RWSEM_SINGLE_READER_VALUE (RWSEM_ACTIVE_READ_BIAS) -#define SPL_RWSEM_SINGLE_WRITER_VALUE (RWSEM_ACTIVE_WRITE_BIAS) -#endif - -/* Linux 3.16 changed activity to count for rwsem-spinlock */ -#if defined(CONFIG_PREEMPT_RT_FULL) -#define RWSEM_COUNT(sem) sem->read_depth -#elif defined(HAVE_RWSEM_ACTIVITY) -#define RWSEM_COUNT(sem) sem->activity -/* Linux 4.8 changed count to an atomic_long_t for !rwsem-spinlock */ -#elif defined(HAVE_RWSEM_ATOMIC_LONG_COUNT) -#define RWSEM_COUNT(sem) atomic_long_read(&(sem)->count) -#else -#define RWSEM_COUNT(sem) sem->count -#endif - -int rwsem_tryupgrade(struct rw_semaphore *rwsem); - -#if defined(RWSEM_SPINLOCK_IS_RAW) -#define spl_rwsem_lock_irqsave(lk, fl) raw_spin_lock_irqsave(lk, fl) -#define spl_rwsem_unlock_irqrestore(lk, fl) \ - raw_spin_unlock_irqrestore(lk, fl) -#define spl_rwsem_trylock_irqsave(lk, fl) raw_spin_trylock_irqsave(lk, fl) -#else -#define spl_rwsem_lock_irqsave(lk, fl) spin_lock_irqsave(lk, fl) -#define spl_rwsem_unlock_irqrestore(lk, fl) spin_unlock_irqrestore(lk, fl) -#define spl_rwsem_trylock_irqsave(lk, fl) spin_trylock_irqsave(lk, fl) -#endif /* RWSEM_SPINLOCK_IS_RAW */ - -#define spl_rwsem_is_locked(rwsem) rwsem_is_locked(rwsem) - -#endif /* _SPL_RWSEM_COMPAT_H */ |