mirror of https://github.com/Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
83 lines
2.6 KiB
83 lines
2.6 KiB
/* |
|
* Internal Header for the Direct Rendering Manager |
|
* |
|
* Copyright 2018 Intel Corporation |
|
* |
|
* 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, sublicense, |
|
* 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 NONINFRINGEMENT. IN NO EVENT SHALL |
|
* VA LINUX SYSTEMS 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 _DRM_UTIL_H_ |
|
#define _DRM_UTIL_H_ |
|
|
|
/** |
|
* DOC: drm utils |
|
* |
|
* Macros and inline functions that does not naturally belong in other places |
|
*/ |
|
|
|
#include <linux/interrupt.h> |
|
#include <linux/kgdb.h> |
|
#include <linux/preempt.h> |
|
#include <linux/smp.h> |
|
|
|
/* |
|
* Use EXPORT_SYMBOL_FOR_TESTS_ONLY() for functions that shall |
|
* only be visible for drmselftests. |
|
*/ |
|
#if defined(CONFIG_DRM_EXPORT_FOR_TESTS) |
|
#define EXPORT_SYMBOL_FOR_TESTS_ONLY(x) EXPORT_SYMBOL(x) |
|
#else |
|
#define EXPORT_SYMBOL_FOR_TESTS_ONLY(x) |
|
#endif |
|
|
|
/** |
|
* for_each_if - helper for handling conditionals in various for_each macros |
|
* @condition: The condition to check |
|
* |
|
* Typical use:: |
|
* |
|
* #define for_each_foo_bar(x, y) \' |
|
* list_for_each_entry(x, y->list, head) \' |
|
* for_each_if(x->something == SOMETHING) |
|
* |
|
* The for_each_if() macro makes the use of for_each_foo_bar() less error |
|
* prone. |
|
*/ |
|
#define for_each_if(condition) if (!(condition)) {} else |
|
|
|
/** |
|
* drm_can_sleep - returns true if currently okay to sleep |
|
* |
|
* This function shall not be used in new code. |
|
* The check for running in atomic context may not work - see linux/preempt.h. |
|
* |
|
* FIXME: All users of drm_can_sleep should be removed (see todo.rst) |
|
* |
|
* Returns: |
|
* False if kgdb is active, we are in atomic context or irqs are disabled. |
|
*/ |
|
static inline bool drm_can_sleep(void) |
|
{ |
|
if (in_atomic() || in_dbg_master() || irqs_disabled()) |
|
return false; |
|
return true; |
|
} |
|
|
|
#endif
|
|
|