linux-kernel - [PATCH v2 for-next 0/4] optimise sbitmap deferred clear

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <cover.1606058975.git.asml.silence@gmail.com>
Date:   Sun, 22 Nov 2020 15:35:44 +0000
From:   Pavel Begunkov <asml.silence@...il.com>
To:     Jens Axboe <axboe@...nel.dk>, linux-block@...r.kernel.org,
        Omar Sandoval <osandov@...ndov.com>
Cc:     linux-kernel@...r.kernel.org
Subject: [PATCH v2 for-next 0/4] optimise sbitmap deferred clear

sbitmap takes away some cycles for my tag-deficient test, removal of
locking in sbitmap_deferred_clear() gives +~1% throuhput.

[1/4] and [4/4] are simple, it'd be great if someone could double
check for ordering issues for other two patches.

v2: add 3rd (CAS -> atomic and) and 4th patches

Pavel Begunkov (4):
  sbitmap: optimise sbitmap_deferred_clear()
  sbitmap: remove swap_lock
  sbitmap: replace CAS with atomic and
  sbitmap: simplify wrap check

 include/linux/sbitmap.h |  5 -----
 lib/sbitmap.c           | 44 +++++++++++++++++------------------------
 2 files changed, 18 insertions(+), 31 deletions(-)

-- 
2.24.0