io_uring/sqpoll.h

   1 // SPDX-License-Identifier: GPL-2.0
   2
   3 struct io_sq_data {
   4         refcount_t              refs;
   5         atomic_t                park_pending;
   6         struct mutex            lock;
   7
   8         /* ctx's that are using this sqd */
   9         struct list_head        ctx_list;
  10
  11         struct task_struct      *thread;
  12         struct wait_queue_head  wait;
  13
  14         unsigned                sq_thread_idle;
  15         int                     sq_cpu;
  16         pid_t                   task_pid;
  17         pid_t                   task_tgid;
  18
  19         unsigned long           state;
  20         struct completion       exited;
  21 };
  22
  23 int io_sq_offload_create(struct io_ring_ctx *ctx, struct io_uring_params *p);
  24 void io_sq_thread_finish(struct io_ring_ctx *ctx);
  25 void io_sq_thread_stop(struct io_sq_data *sqd);
  26 void io_sq_thread_park(struct io_sq_data *sqd);
  27 void io_sq_thread_unpark(struct io_sq_data *sqd);
  28 void io_put_sq_data(struct io_sq_data *sqd);
  29 void io_sqpoll_wait_sq(struct io_ring_ctx *ctx);
  30 int io_sqpoll_wq_cpu_affinity(struct io_ring_ctx *ctx, cpumask_var_t mask);