| /* |
| * Header file for reservations for dma-buf and ttm |
| * |
| * Copyright(C) 2011 Linaro Limited. All rights reserved. |
| * Copyright (C) 2012-2013 Canonical Ltd |
| * Copyright (C) 2012 Texas Instruments |
| * |
| * Authors: |
| * Rob Clark <rob.clark@linaro.org> |
| * Maarten Lankhorst <maarten.lankhorst@canonical.com> |
| * Thomas Hellstrom <thellstrom-at-vmware-dot-com> |
| * |
| * Based on bo.c which bears the following copyright notice, |
| * but is dual licensed: |
| * |
| * Copyright (c) 2006-2009 VMware, Inc., Palo Alto, CA., USA |
| * All Rights Reserved. |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a |
| * copy of this software and associated documentation files (the |
| * "Software"), to deal in the Software without restriction, including |
| * without limitation the rights to use, copy, modify, merge, publish, |
| * distribute, sub license, and/or sell copies of the Software, and to |
| * permit persons to whom the Software is furnished to do so, subject to |
| * the following conditions: |
| * |
| * The above copyright notice and this permission notice (including the |
| * next paragraph) shall be included in all copies or substantial portions |
| * of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL |
| * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, |
| * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR |
| * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE |
| * USE OR OTHER DEALINGS IN THE SOFTWARE. |
| */ |
| #ifndef _LINUX_RESERVATION_H |
| #define _LINUX_RESERVATION_H |
| |
| #include <linux/ww_mutex.h> |
| |
| extern struct ww_class reservation_ww_class; |
| |
| struct reservation_object { |
| struct ww_mutex lock; |
| }; |
| |
| static inline void |
| reservation_object_init(struct reservation_object *obj) |
| { |
| ww_mutex_init(&obj->lock, &reservation_ww_class); |
| } |
| |
| static inline void |
| reservation_object_fini(struct reservation_object *obj) |
| { |
| ww_mutex_destroy(&obj->lock); |
| } |
| |
| #endif /* _LINUX_RESERVATION_H */ |
