Contributors: 19
Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
Jens Axboe |
334 |
71.67% |
18 |
39.13% |
Omar Sandoval |
27 |
5.79% |
5 |
10.87% |
Christoph Hellwig |
17 |
3.65% |
3 |
6.52% |
Pavel Begunkov |
15 |
3.22% |
2 |
4.35% |
Kent Overstreet |
15 |
3.22% |
1 |
2.17% |
Bart Van Assche |
14 |
3.00% |
1 |
2.17% |
Tejun Heo |
5 |
1.07% |
1 |
2.17% |
John Garry |
5 |
1.07% |
3 |
6.52% |
Keith Busch |
5 |
1.07% |
1 |
2.17% |
Jan Kara |
5 |
1.07% |
1 |
2.17% |
Tahsin Erdogan |
5 |
1.07% |
1 |
2.17% |
Ming Lei |
5 |
1.07% |
2 |
4.35% |
Linus Torvalds (pre-git) |
4 |
0.86% |
1 |
2.17% |
Stephen Rothwell |
3 |
0.64% |
1 |
2.17% |
Divyesh Shah |
2 |
0.43% |
1 |
2.17% |
Damien Le Moal |
2 |
0.43% |
1 |
2.17% |
Greg Kroah-Hartman |
1 |
0.21% |
1 |
2.17% |
Andrew Morton |
1 |
0.21% |
1 |
2.17% |
Martin K. Petersen |
1 |
0.21% |
1 |
2.17% |
Total |
466 |
|
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_ELV) {
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_ELV) {
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_ELV) {
struct request_queue *q = rq->q;
struct elevator_queue *e = q->elevator;
if ((rq->rq_flags & RQF_ELVPRIV) && 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