mirror of
https://github.com/torvalds/linux.git
synced 2024-11-18 10:01:43 +00:00
3e5a428b26
Create a pwork destroy function that uses polling instead of uninterruptible sleep to wait for work items to finish so that we can touch the softlockup watchdog. IOWs, gross hack. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Brian Foster <bfoster@redhat.com>
62 lines
1.5 KiB
C
62 lines
1.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
|
|
/*
|
|
* Copyright (C) 2019 Oracle. All Rights Reserved.
|
|
* Author: Darrick J. Wong <darrick.wong@oracle.com>
|
|
*/
|
|
#ifndef __XFS_PWORK_H__
|
|
#define __XFS_PWORK_H__
|
|
|
|
struct xfs_pwork;
|
|
struct xfs_mount;
|
|
|
|
typedef int (*xfs_pwork_work_fn)(struct xfs_mount *mp, struct xfs_pwork *pwork);
|
|
|
|
/*
|
|
* Parallel work coordination structure.
|
|
*/
|
|
struct xfs_pwork_ctl {
|
|
struct workqueue_struct *wq;
|
|
struct xfs_mount *mp;
|
|
xfs_pwork_work_fn work_fn;
|
|
struct wait_queue_head poll_wait;
|
|
atomic_t nr_work;
|
|
int error;
|
|
};
|
|
|
|
/*
|
|
* Embed this parallel work control item inside your own work structure,
|
|
* then queue work with it.
|
|
*/
|
|
struct xfs_pwork {
|
|
struct work_struct work;
|
|
struct xfs_pwork_ctl *pctl;
|
|
};
|
|
|
|
#define XFS_PWORK_SINGLE_THREADED { .pctl = NULL }
|
|
|
|
/* Have we been told to abort? */
|
|
static inline bool
|
|
xfs_pwork_ctl_want_abort(
|
|
struct xfs_pwork_ctl *pctl)
|
|
{
|
|
return pctl && pctl->error;
|
|
}
|
|
|
|
/* Have we been told to abort? */
|
|
static inline bool
|
|
xfs_pwork_want_abort(
|
|
struct xfs_pwork *pwork)
|
|
{
|
|
return xfs_pwork_ctl_want_abort(pwork->pctl);
|
|
}
|
|
|
|
int xfs_pwork_init(struct xfs_mount *mp, struct xfs_pwork_ctl *pctl,
|
|
xfs_pwork_work_fn work_fn, const char *tag,
|
|
unsigned int nr_threads);
|
|
void xfs_pwork_queue(struct xfs_pwork_ctl *pctl, struct xfs_pwork *pwork);
|
|
int xfs_pwork_destroy(struct xfs_pwork_ctl *pctl);
|
|
void xfs_pwork_poll(struct xfs_pwork_ctl *pctl);
|
|
unsigned int xfs_pwork_guess_datadev_parallelism(struct xfs_mount *mp);
|
|
|
|
#endif /* __XFS_PWORK_H__ */
|