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83 lines
2.0 KiB
83 lines
2.0 KiB
#ifndef INTERNAL_IO_WQ_H |
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#define INTERNAL_IO_WQ_H |
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#include <linux/refcount.h> |
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#include <linux/io_uring_types.h> |
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struct io_wq; |
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enum { |
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IO_WQ_WORK_CANCEL = 1, |
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IO_WQ_WORK_HASHED = 2, |
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IO_WQ_WORK_UNBOUND = 4, |
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IO_WQ_WORK_CONCURRENT = 16, |
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IO_WQ_HASH_SHIFT = 24, /* upper 8 bits are used for hash key */ |
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}; |
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enum io_wq_cancel { |
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IO_WQ_CANCEL_OK, /* cancelled before started */ |
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IO_WQ_CANCEL_RUNNING, /* found, running, and attempted cancelled */ |
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IO_WQ_CANCEL_NOTFOUND, /* work not found */ |
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}; |
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typedef struct io_wq_work *(free_work_fn)(struct io_wq_work *); |
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typedef void (io_wq_work_fn)(struct io_wq_work *); |
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struct io_wq_hash { |
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refcount_t refs; |
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unsigned long map; |
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struct wait_queue_head wait; |
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}; |
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static inline void io_wq_put_hash(struct io_wq_hash *hash) |
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{ |
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if (refcount_dec_and_test(&hash->refs)) |
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kfree(hash); |
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} |
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struct io_wq_data { |
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struct io_wq_hash *hash; |
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struct task_struct *task; |
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io_wq_work_fn *do_work; |
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free_work_fn *free_work; |
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}; |
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struct io_wq *io_wq_create(unsigned bounded, struct io_wq_data *data); |
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void io_wq_exit_start(struct io_wq *wq); |
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void io_wq_put_and_exit(struct io_wq *wq); |
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void io_wq_enqueue(struct io_wq *wq, struct io_wq_work *work); |
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void io_wq_hash_work(struct io_wq_work *work, void *val); |
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int io_wq_cpu_affinity(struct io_wq *wq, cpumask_var_t mask); |
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int io_wq_max_workers(struct io_wq *wq, int *new_count); |
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static inline bool io_wq_is_hashed(struct io_wq_work *work) |
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{ |
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return work->flags & IO_WQ_WORK_HASHED; |
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} |
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typedef bool (work_cancel_fn)(struct io_wq_work *, void *); |
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enum io_wq_cancel io_wq_cancel_cb(struct io_wq *wq, work_cancel_fn *cancel, |
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void *data, bool cancel_all); |
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#if defined(CONFIG_IO_WQ) |
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extern void io_wq_worker_sleeping(struct task_struct *); |
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extern void io_wq_worker_running(struct task_struct *); |
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#else |
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static inline void io_wq_worker_sleeping(struct task_struct *tsk) |
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{ |
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} |
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static inline void io_wq_worker_running(struct task_struct *tsk) |
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{ |
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} |
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#endif |
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static inline bool io_wq_current_is_worker(void) |
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{ |
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return in_task() && (current->flags & PF_IO_WORKER) && |
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current->worker_private; |
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} |
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#endif
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