From: Omar Sandoval <osandov@osandov.com>
To: Jens Axboe <axboe@fb.com>, linux-block@vger.kernel.org
Cc: linux-kernel@vger.kernel.org, kernel-team@fb.com,
Alexei Starovoitov <ast@fb.com>
Subject: [PATCH v3 0/5] blk-mq: abstract tag allocation out into sbitmap library
Date: Fri, 9 Sep 2016 11:42:06 -0700 [thread overview]
Message-ID: <cover.1473446095.git.osandov@fb.com> (raw)
From: Omar Sandoval <osandov@fb.com>
This is v3 of the scalable bitmap library derived from blk-mq's tag
allocation code. v1 is here [1], v2 is here [2].
Changes in v3:
- Renamed scale_bitmap to sbitmap
Changes in v2:
- Return -EINVAL instead of BUG_ON() if an invalid shift is passed to
the initialization functions.
- Rename last_cache to alloc_hint.
- Split the wait queue allocation change into a separate patch. Patch 1
should now be a no-op.
- Add patches 3 and 4 to make the API cleaner by pushing some context
from the blk-mq data structures into the common scale_bitmap code.
- Add patch 5 to randomize the allocation hint on initialization like
was intended originally for blk-mq.
Applies to v4.8-rc5.
1: http://marc.info/?l=linux-block&m=147251402805405
2: http://marc.info/?l=linux-block&m=147329198222482
Omar Sandoval (5):
blk-mq: abstract tag allocation out into sbitmap library
sbitmap: allocate wait queues on a specific node
sbitmap: push per-cpu last_tag into sbitmap_queue
sbitmap: push alloc policy into sbitmap_queue
sbitmap: randomize initial last_cache values
MAINTAINERS | 1 +
block/Kconfig | 1 +
block/blk-mq-tag.c | 503 +++++++++++-------------------------------------
block/blk-mq-tag.h | 42 ++--
block/blk-mq.c | 114 ++++-------
block/blk-mq.h | 11 --
include/linux/blk-mq.h | 9 +-
include/linux/sbitmap.h | 379 ++++++++++++++++++++++++++++++++++++
lib/Kconfig | 3 +
lib/Makefile | 2 +
lib/sbitmap.c | 320 ++++++++++++++++++++++++++++++
11 files changed, 868 insertions(+), 517 deletions(-)
create mode 100644 include/linux/sbitmap.h
create mode 100644 lib/sbitmap.c
--
2.9.3
next reply other threads:[~2016-09-09 18:42 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-09-09 18:42 Omar Sandoval [this message]
2016-09-09 18:42 ` [PATCH v3 1/5] blk-mq: abstract tag allocation out into sbitmap library Omar Sandoval
2016-09-09 18:42 ` [PATCH v3 2/5] sbitmap: allocate wait queues on a specific node Omar Sandoval
2016-09-09 18:42 ` [PATCH v3 3/5] sbitmap: push per-cpu last_tag into sbitmap_queue Omar Sandoval
2016-09-09 18:42 ` [PATCH v3 4/5] sbitmap: push alloc policy " Omar Sandoval
2016-09-09 18:42 ` [PATCH v3 5/5] sbitmap: randomize initial last_cache values Omar Sandoval
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