drm_util.h

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/*
 * 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_
 
#include <linux/interrupt.h>
#include <linux/kgdb.h>
#include <linux/preempt.h>
#include <linux/smp.h>
#include <linux/util_macros.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
 
static inline bool drm_can_sleep(void)
{
    if (in_atomic() || in_dbg_master() || irqs_disabled())
        return false;
    return true;
}
 
#endif