| 1 | /* SPDX-License-Identifier: (GPL-2.0 or LGPL-2.1) |
| 2 | * |
| 3 | * wrapper/spinlock.h |
| 4 | * |
| 5 | * Copyright (C) 2011-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com> |
| 6 | */ |
| 7 | |
| 8 | #ifndef _LTTNG_WRAPPER_SPINLOCK_H |
| 9 | #define _LTTNG_WRAPPER_SPINLOCK_H |
| 10 | |
| 11 | #include <linux/version.h> |
| 12 | |
| 13 | #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,33)) |
| 14 | |
| 15 | #include <linux/string.h> |
| 16 | |
| 17 | #define raw_spin_lock_init(lock) \ |
| 18 | do { \ |
| 19 | raw_spinlock_t __lock = __RAW_SPIN_LOCK_UNLOCKED; \ |
| 20 | memcpy(lock, &__lock, sizeof(lock)); \ |
| 21 | } while (0) |
| 22 | |
| 23 | #define raw_spin_is_locked(lock) __raw_spin_is_locked(lock) |
| 24 | |
| 25 | #define wrapper_desc_spin_lock(lock) spin_lock(lock) |
| 26 | #define wrapper_desc_spin_unlock(lock) spin_unlock(lock) |
| 27 | |
| 28 | #else |
| 29 | |
| 30 | #define wrapper_desc_spin_lock(lock) raw_spin_lock(lock) |
| 31 | #define wrapper_desc_spin_unlock(lock) raw_spin_unlock(lock) |
| 32 | |
| 33 | #endif |
| 34 | #endif /* _LTTNG_WRAPPER_SPINLOCK_H */ |