projects / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 40786717 DW |
1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
| 2 | /* | |
| 3 | * Copyright (C) 2019 Oracle. All Rights Reserved. | |
| 4 | * Author: Darrick J. Wong <[email protected]> | |
| 5 | */ | |
| 6 | #ifndef __XFS_PWORK_H__ | |
| 7 | #define __XFS_PWORK_H__ | |
| 8 | ||
| 9 | struct xfs_pwork; | |
| 10 | struct xfs_mount; | |
| 11 | ||
| 12 | typedef int (*xfs_pwork_work_fn)(struct xfs_mount *mp, struct xfs_pwork *pwork); | |
| 13 | ||
| 14 | /* | |
| 15 | * Parallel work coordination structure. | |
| 16 | */ | |
| 17 | struct xfs_pwork_ctl { | |
| 18 | struct workqueue_struct *wq; | |
| 19 | struct xfs_mount *mp; | |
| 20 | xfs_pwork_work_fn work_fn; | |
| 3e5a428b DW |
21 | struct wait_queue_head poll_wait; |
| 22 | atomic_t nr_work; | |
| 40786717 DW |
23 | int error; |
| 24 | }; | |
| 25 | ||
| 26 | /* | |
| 27 | * Embed this parallel work control item inside your own work structure, | |
| 28 | * then queue work with it. | |
| 29 | */ | |
| 30 | struct xfs_pwork { | |
| 31 | struct work_struct work; | |
| 32 | struct xfs_pwork_ctl *pctl; | |
| 33 | }; | |
| 34 | ||
| 35 | #define XFS_PWORK_SINGLE_THREADED { .pctl = NULL } | |
| 36 | ||
| 37 | /* Have we been told to abort? */ | |
| 38 | static inline bool | |
| 39 | xfs_pwork_ctl_want_abort( | |
| 40 | struct xfs_pwork_ctl *pctl) | |
| 41 | { | |
| 42 | return pctl && pctl->error; | |
| 43 | } | |
| 44 | ||
| 45 | /* Have we been told to abort? */ | |
| 46 | static inline bool | |
| 47 | xfs_pwork_want_abort( | |
| 48 | struct xfs_pwork *pwork) | |
| 49 | { | |
| 50 | return xfs_pwork_ctl_want_abort(pwork->pctl); | |
| 51 | } | |
| 52 | ||
| 53 | int xfs_pwork_init(struct xfs_mount *mp, struct xfs_pwork_ctl *pctl, | |
| 54 | xfs_pwork_work_fn work_fn, const char *tag, | |
| 55 | unsigned int nr_threads); | |
| 56 | void xfs_pwork_queue(struct xfs_pwork_ctl *pctl, struct xfs_pwork *pwork); | |
| 57 | int xfs_pwork_destroy(struct xfs_pwork_ctl *pctl); | |
| 3e5a428b | 58 | void xfs_pwork_poll(struct xfs_pwork_ctl *pctl); |
| 40786717 DW |
59 | unsigned int xfs_pwork_guess_datadev_parallelism(struct xfs_mount *mp); |
| 60 | ||
| 61 | #endif /* __XFS_PWORK_H__ */ |