| 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 __rcu *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 | u64 work_time; |
| 20 | unsigned long state; |
| 21 | struct completion exited; |
| 22 | }; |
| 23 | |
| 24 | int io_sq_offload_create(struct io_ring_ctx *ctx, struct io_uring_params *p); |
| 25 | void io_sq_thread_finish(struct io_ring_ctx *ctx); |
| 26 | void io_sq_thread_stop(struct io_sq_data *sqd); |
| 27 | void io_sq_thread_park(struct io_sq_data *sqd); |
| 28 | void io_sq_thread_unpark(struct io_sq_data *sqd); |
| 29 | void io_put_sq_data(struct io_sq_data *sqd); |
| 30 | void io_sqpoll_wait_sq(struct io_ring_ctx *ctx); |
| 31 | int io_sqpoll_wq_cpu_affinity(struct io_ring_ctx *ctx, cpumask_var_t mask); |
| 32 | u64 io_sq_cpu_usec(struct task_struct *tsk); |
| 33 | |
| 34 | static inline struct task_struct *sqpoll_task_locked(struct io_sq_data *sqd) |
| 35 | { |
| 36 | return rcu_dereference_protected(sqd->thread, |
| 37 | lockdep_is_held(&sqd->lock)); |
| 38 | } |
| 39 |