From: Jens Axboe <axboe@fb.com>
To: <linux-kernel@vger.kernel.org>, <linux-block@vger.kernel.org>
Cc: <osandov@osandov.com>, <bart.vanassche@sandisk.com>
Subject: [PATCHSET v6] blk-mq scheduling framework
Date: Wed, 11 Jan 2017 14:39:53 -0700 [thread overview]
Message-ID: <1484170803-9311-1-git-send-email-axboe@fb.com> (raw)
Another year, another posting of this patchset. The previous posting
was here:
https://www.spinics.net/lists/kernel/msg2406106.html
(yes, I've skipped v5, it was fixes on top of v4, not the rework).
I've reworked bits of this to get rid of the shadow requests, thanks
to Bart for the inspiration. The missing piece, for me, was the fact
that we have the tags->rqs[] indirection array already. I've done this
somewhat differently, though, by having the internal scheduler tag
map be allocated/torn down when an IO scheduler is attached or
detached. This also means that when we run without a scheduler, we
don't have to do double tag allocations, it'll work like before.
The patchset applies on top of 4.10-rc3, or can be pulled here:
git://git.kernel.dk/linux-block blk-mq-sched.6
block/Kconfig.iosched | 50 ++++
block/Makefile | 3
block/blk-core.c | 19 -
block/blk-exec.c | 3
block/blk-flush.c | 15 -
block/blk-ioc.c | 12
block/blk-merge.c | 4
block/blk-mq-sched.c | 354 +++++++++++++++++++++++++++++
block/blk-mq-sched.h | 157 ++++++++++++
block/blk-mq-sysfs.c | 13 +
block/blk-mq-tag.c | 58 ++--
block/blk-mq-tag.h | 4
block/blk-mq.c | 413 +++++++++++++++++++---------------
block/blk-mq.h | 40 +++
block/blk-tag.c | 1
block/blk.h | 26 +-
block/cfq-iosched.c | 2
block/deadline-iosched.c | 2
block/elevator.c | 247 +++++++++++++++-----
block/mq-deadline.c | 569 +++++++++++++++++++++++++++++++++++++++++++++++
block/noop-iosched.c | 2
drivers/nvme/host/pci.c | 1
include/linux/blk-mq.h | 9
include/linux/blkdev.h | 6
include/linux/elevator.h | 36 ++
25 files changed, 1732 insertions(+), 314 deletions(-)
--
Jens Axboe
next reply other threads:[~2017-01-11 21:42 UTC|newest]
Thread overview: 62+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-01-11 21:39 Jens Axboe [this message]
2017-01-11 21:39 ` [PATCH 01/10] block: move existing elevator ops to union Jens Axboe
2017-01-12 10:15 ` Johannes Thumshirn
2017-01-12 21:17 ` Bart Van Assche
2017-01-13 8:34 ` Christoph Hellwig
2017-01-13 15:00 ` Jens Axboe
2017-01-11 21:39 ` [PATCH 02/10] blk-mq: make mq_ops a const pointer Jens Axboe
2017-01-12 10:14 ` Johannes Thumshirn
2017-01-13 8:16 ` Christoph Hellwig
2017-01-11 21:39 ` [PATCH 03/10] block: move rq_ioc() to blk.h Jens Axboe
2017-01-12 10:14 ` Johannes Thumshirn
2017-01-12 21:18 ` Bart Van Assche
2017-01-13 8:33 ` Christoph Hellwig
2017-01-11 21:39 ` [PATCH 04/10] blk-mq: un-export blk_mq_free_hctx_request() Jens Axboe
2017-01-12 10:13 ` Johannes Thumshirn
2017-01-12 21:18 ` Bart Van Assche
2017-01-13 8:16 ` Christoph Hellwig
2017-01-11 21:39 ` [PATCH 05/10] blk-mq: export some helpers we need to the scheduling framework Jens Axboe
2017-01-12 10:17 ` Johannes Thumshirn
2017-01-12 21:20 ` Bart Van Assche
2017-01-13 8:17 ` Christoph Hellwig
2017-01-13 15:01 ` Jens Axboe
2017-01-11 21:39 ` [PATCH 06/10] blk-mq-tag: cleanup the normal/reserved tag allocation Jens Axboe
2017-01-12 21:22 ` Bart Van Assche
2017-01-12 22:07 ` Jens Axboe
2017-01-13 8:30 ` Christoph Hellwig
2017-01-13 15:06 ` Jens Axboe
2017-01-11 21:40 ` [PATCH 07/10] blk-mq: abstract out helpers for allocating/freeing tag maps Jens Axboe
2017-01-12 21:29 ` Bart Van Assche
2017-01-12 21:54 ` Jens Axboe
2017-01-13 8:25 ` Johannes Thumshirn
2017-01-11 21:40 ` [PATCH 08/10] blk-mq-sched: add framework for MQ capable IO schedulers Jens Axboe
2017-01-12 21:45 ` Bart Van Assche
2017-01-12 21:59 ` Jens Axboe
2017-01-13 11:15 ` Hannes Reinecke
2017-01-13 16:39 ` Bart Van Assche
2017-01-13 16:41 ` Omar Sandoval
2017-01-13 17:43 ` Hannes Reinecke
2017-01-11 21:40 ` [PATCH 09/10] mq-deadline: add blk-mq adaptation of the deadline IO scheduler Jens Axboe
2017-01-12 21:53 ` Bart Van Assche
2017-01-11 21:40 ` [PATCH 10/10] blk-mq-sched: allow setting of default " Jens Axboe
2017-01-12 21:54 ` Bart Van Assche
2017-01-12 21:16 ` [PATCHSET v6] blk-mq scheduling framework Bart Van Assche
2017-01-13 8:15 ` Hannes Reinecke
2017-01-13 11:04 ` Hannes Reinecke
2017-01-13 12:10 ` Hannes Reinecke
2017-01-13 15:05 ` Jens Axboe
2017-01-13 15:03 ` Jens Axboe
2017-01-13 15:23 ` Jens Axboe
2017-01-13 15:33 ` Hannes Reinecke
2017-01-13 15:34 ` Jens Axboe
2017-01-13 15:59 ` Hannes Reinecke
2017-01-13 16:00 ` Jens Axboe
2017-01-13 16:02 ` Jens Axboe
2017-01-13 21:45 ` Jens Axboe
2017-01-16 8:11 ` Hannes Reinecke
2017-01-16 15:12 ` Jens Axboe
2017-01-16 15:16 ` Jens Axboe
2017-01-16 15:47 ` Jens Axboe
2017-01-13 10:09 ` Hannes Reinecke
2017-01-15 10:12 ` Paolo Valente
2017-01-15 15:55 ` Jens Axboe
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