Contributors: 19
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Jens Axboe |
331 |
72.27% |
18 |
39.13% |
| Christoph Hellwig |
20 |
4.37% |
4 |
8.70% |
| Omar Sandoval |
19 |
4.15% |
4 |
8.70% |
| Kent Overstreet |
15 |
3.28% |
1 |
2.17% |
| Pavel Begunkov |
15 |
3.28% |
2 |
4.35% |
| Bart Van Assche |
14 |
3.06% |
1 |
2.17% |
| Ming Lei |
5 |
1.09% |
2 |
4.35% |
| Tejun Heo |
5 |
1.09% |
1 |
2.17% |
| Keith Busch |
5 |
1.09% |
1 |
2.17% |
| John Garry |
5 |
1.09% |
3 |
6.52% |
| Jan Kara |
5 |
1.09% |
1 |
2.17% |
| Tahsin Erdogan |
5 |
1.09% |
1 |
2.17% |
| Linus Torvalds (pre-git) |
4 |
0.87% |
1 |
2.17% |
| Stephen Rothwell |
3 |
0.66% |
1 |
2.17% |
| Divyesh Shah |
2 |
0.44% |
1 |
2.17% |
| Damien Le Moal |
2 |
0.44% |
1 |
2.17% |
| Andrew Morton |
1 |
0.22% |
1 |
2.17% |
| Martin K. Petersen |
1 |
0.22% |
1 |
2.17% |
| Greg Kroah-Hartman |
1 |
0.22% |
1 |
2.17% |
| Total |
458 |
|
46 |
|
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef BLK_MQ_SCHED_H
#define BLK_MQ_SCHED_H
#include "elevator.h"
#include "blk-mq.h"
#define MAX_SCHED_RQ (16 * BLKDEV_DEFAULT_RQ)
bool blk_mq_sched_try_merge(struct request_queue *q, struct bio *bio,
unsigned int nr_segs, struct request **merged_request);
bool blk_mq_sched_bio_merge(struct request_queue *q, struct bio *bio,
unsigned int nr_segs);
bool blk_mq_sched_try_insert_merge(struct request_queue *q, struct request *rq,
struct list_head *free);
void blk_mq_sched_mark_restart_hctx(struct blk_mq_hw_ctx *hctx);
void __blk_mq_sched_restart(struct blk_mq_hw_ctx *hctx);
void blk_mq_sched_dispatch_requests(struct blk_mq_hw_ctx *hctx);
int blk_mq_init_sched(struct request_queue *q, struct elevator_type *e);
void blk_mq_exit_sched(struct request_queue *q, struct elevator_queue *e);
void blk_mq_sched_free_rqs(struct request_queue *q);
static inline void blk_mq_sched_restart(struct blk_mq_hw_ctx *hctx)
{
if (test_bit(BLK_MQ_S_SCHED_RESTART, &hctx->state))
__blk_mq_sched_restart(hctx);
}
static inline bool bio_mergeable(struct bio *bio)
{
return !(bio->bi_opf & REQ_NOMERGE_FLAGS);
}
static inline bool
blk_mq_sched_allow_merge(struct request_queue *q, struct request *rq,
struct bio *bio)
{
if (rq->rq_flags & RQF_USE_SCHED) {
struct elevator_queue *e = q->elevator;
if (e->type->ops.allow_merge)
return e->type->ops.allow_merge(q, rq, bio);
}
return true;
}
static inline void blk_mq_sched_completed_request(struct request *rq, u64 now)
{
if (rq->rq_flags & RQF_USE_SCHED) {
struct elevator_queue *e = rq->q->elevator;
if (e->type->ops.completed_request)
e->type->ops.completed_request(rq, now);
}
}
static inline void blk_mq_sched_requeue_request(struct request *rq)
{
if (rq->rq_flags & RQF_USE_SCHED) {
struct request_queue *q = rq->q;
struct elevator_queue *e = q->elevator;
if (e->type->ops.requeue_request)
e->type->ops.requeue_request(rq);
}
}
static inline bool blk_mq_sched_has_work(struct blk_mq_hw_ctx *hctx)
{
struct elevator_queue *e = hctx->queue->elevator;
if (e && e->type->ops.has_work)
return e->type->ops.has_work(hctx);
return false;
}
static inline bool blk_mq_sched_needs_restart(struct blk_mq_hw_ctx *hctx)
{
return test_bit(BLK_MQ_S_SCHED_RESTART, &hctx->state);
}
#endif