mirror of
https://github.com/torvalds/linux
synced 2024-11-05 18:23:50 +00:00
c92fcfc2ba
We use task_work for a variety of reasons, but doing completions or triggering rety after poll are by far the hottest two. Use the indirect funtion call wrappers to avoid the indirect function call if CONFIG_RETPOLINE is set. Signed-off-by: Jens Axboe <axboe@kernel.dk>
42 lines
1.1 KiB
C
42 lines
1.1 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
|
|
#include "alloc_cache.h"
|
|
|
|
enum {
|
|
IO_APOLL_OK,
|
|
IO_APOLL_ABORTED,
|
|
IO_APOLL_READY
|
|
};
|
|
|
|
struct io_poll {
|
|
struct file *file;
|
|
struct wait_queue_head *head;
|
|
__poll_t events;
|
|
int retries;
|
|
struct wait_queue_entry wait;
|
|
};
|
|
|
|
struct async_poll {
|
|
union {
|
|
struct io_poll poll;
|
|
struct io_cache_entry cache;
|
|
};
|
|
struct io_poll *double_poll;
|
|
};
|
|
|
|
int io_poll_add_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe);
|
|
int io_poll_add(struct io_kiocb *req, unsigned int issue_flags);
|
|
|
|
int io_poll_remove_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe);
|
|
int io_poll_remove(struct io_kiocb *req, unsigned int issue_flags);
|
|
|
|
struct io_cancel_data;
|
|
int io_poll_cancel(struct io_ring_ctx *ctx, struct io_cancel_data *cd,
|
|
unsigned issue_flags);
|
|
int io_arm_poll_handler(struct io_kiocb *req, unsigned issue_flags);
|
|
bool io_poll_remove_all(struct io_ring_ctx *ctx, struct task_struct *tsk,
|
|
bool cancel_all);
|
|
|
|
void io_apoll_cache_free(struct io_cache_entry *entry);
|
|
|
|
void io_poll_task_func(struct io_kiocb *req, struct io_tw_state *ts);
|