drivers/md/dm-vdo/funnel-workqueue.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  * Copyright 2023 Red Hat
   4  */
   5
   6 #ifndef VDO_WORK_QUEUE_H
   7 #define VDO_WORK_QUEUE_H
   8
   9 #include <linux/sched.h> /* for TASK_COMM_LEN */
  10
  11 #include "types.h"
  12
  13 enum {
  14         MAX_VDO_WORK_QUEUE_NAME_LEN = TASK_COMM_LEN,
  15 };
  16
  17 struct vdo_work_queue_type {
  18         void (*start)(void *context);
  19         void (*finish)(void *context);
  20         enum vdo_completion_priority max_priority;
  21         enum vdo_completion_priority default_priority;
  22 };
  23
  24 struct vdo_completion;
  25 struct vdo_thread;
  26 struct vdo_work_queue;
  27
  28 int vdo_make_work_queue(const char *thread_name_prefix, const char *name,
  29                         struct vdo_thread *owner, const struct vdo_work_queue_type *type,
  30                         unsigned int thread_count, void *thread_privates[],
  31                         struct vdo_work_queue **queue_ptr);
  32
  33 void vdo_enqueue_work_queue(struct vdo_work_queue *queue, struct vdo_completion *completion);
  34
  35 void vdo_finish_work_queue(struct vdo_work_queue *queue);
  36
  37 void vdo_free_work_queue(struct vdo_work_queue *queue);
  38
  39 void vdo_dump_work_queue(struct vdo_work_queue *queue);
  40
  41 void vdo_dump_completion_to_buffer(struct vdo_completion *completion, char *buffer,
  42                                    size_t length);
  43
  44 void *vdo_get_work_queue_private_data(void);
  45 struct vdo_work_queue *vdo_get_current_work_queue(void);
  46 struct vdo_thread *vdo_get_work_queue_owner(struct vdo_work_queue *queue);
  47
  48 bool __must_check vdo_work_queue_type_is(struct vdo_work_queue *queue,
  49                                          const struct vdo_work_queue_type *type);
  50
  51 #endif /* VDO_WORK_QUEUE_H */