DEVTYPE=ctrl
DRIVER=ctrl
Index of /anon_sym/anon/proc/self/root/sys/class/tty/tty25/subsystem/tty10/power
Index of /anon_sym/anon/proc/self/root/sys/class/tty/tty25/subsystem/tty10/power
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d-_I|+ U /*
* Copyright 2017 Advanced Micro Devices, Inc.
*
* 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 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
* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) 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_SCHEDULER_SPSC_QUEUE_H_
#define DRM_SCHEDULER_SPSC_QUEUE_H_
#include
#include
/** SPSC lockless queue */
struct spsc_node {
/* Stores spsc_node* */
struct spsc_node *next;
};
struct spsc_queue {
struct spsc_node *head;
/* atomic pointer to struct spsc_node* */
atomic_long_t tail;
atomic_t job_count;
};
static inline void spsc_queue_init(struct spsc_queue *queue)
{
queue->head = NULL;
atomic_long_set(&queue->tail, (long)&queue->head);
atomic_set(&queue->job_count, 0);
}
static inline struct spsc_node *spsc_queue_peek(struct spsc_queue *queue)
{
return queue->head;
}
static inline int spsc_queue_count(struct spsc_queue *queue)
{
return atomic_read(&queue->job_count);
}
static inline bool spsc_queue_push(struct spsc_queue *queue, struct spsc_node *node)
{
struct spsc_node **tail;
node->next = NULL;
preempt_disable();
atomic_inc(&queue->job_