From: Yury Norov <yury.norov@gmail.com>
To: linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will@kernel.org>,
Yoshinori Sato <ysato@users.sourceforge.jp>,
Brian Cain <bcain@codeaurora.org>,
Geert Uytterhoeven <geert@linux-m68k.org>,
Thomas Bogendoerfer <tsbogend@alpha.franken.de>,
Jonas Bonn <jonas@southpole.se>,
Stefan Kristiansson <stefan.kristiansson@saunalahti.fi>,
"James E.J. Bottomley" <James.Bottomley@HansenPartnership.com>,
Palmer Dabbelt <palmer@dabbelt.com>,
Heiko Carstens <hca@linux.ibm.com>, Rich Felker <dalias@libc.org>,
David Hildenbrand <david@redhat.com>,
Jaegeuk Kim <jaegeuk@kernel.org>, Arnd Bergmann <arnd@arndb.de>,
Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
Rasmus Villemoes <linux@rasmusvillemoes.dk>,
Andrew Morton <akpm@linux-foundation.org>,
Alexander Lobakin <alobakin@pm.me>,
Samuel Mendoza-Jonas <sam@mendozajonas.com>,
Jakub Kicinski <kuba@kernel.org>,
Daniel Bristot de Oliveira <bristot@redhat.com>,
Alexey Klimov <aklimov@redhat.com>,
Ingo Molnar <mingo@redhat.com>
Cc: Yury Norov <yury.norov@gmail.com>
Subject: [PATCH 0/8] all: use find_next_*_bit() instead of find_first_*_bit() where possible
Date: Sat, 12 Jun 2021 05:36:31 -0700 [thread overview]
Message-ID: <20210612123639.329047-1-yury.norov@gmail.com> (raw)
find_first_*_bit() is simpler and faster than 'next' version [1], and they
work identically if start == 0. But in many cases kernel code uses the
'next' version where 'first' can be used. This series addresses this issue.
Patches 1-3 move find.h under include/linux as it simplifies development.
Patches 4-8 switch the kernel and tools to find_first_*_bit() implementation
where appropriate.
Yury Norov (8):
bitops: protect find_first_{,zero}_bit properly
bitops: move find_bit_*_le functions from le.h to find.h
include: move find.h from asm_generic to linux
arch: remove GENERIC_FIND_FIRST_BIT entirely
lib: add find_first_and_bit()
cpumask: use find_first_and_bit()
all: replace find_next{,_zero}_bit with find_first{,_zero}_bit where
appropriate
tools: sync tools/bitmap with mother linux
MAINTAINERS | 4 +-
arch/alpha/include/asm/bitops.h | 2 -
arch/arc/Kconfig | 1 -
arch/arc/include/asm/bitops.h | 1 -
arch/arm/include/asm/bitops.h | 1 -
arch/arm64/Kconfig | 1 -
arch/arm64/include/asm/bitops.h | 1 -
arch/csky/include/asm/bitops.h | 1 -
arch/h8300/include/asm/bitops.h | 1 -
arch/hexagon/include/asm/bitops.h | 1 -
arch/ia64/include/asm/bitops.h | 2 -
arch/m68k/include/asm/bitops.h | 2 -
arch/mips/Kconfig | 1 -
arch/mips/include/asm/bitops.h | 1 -
arch/openrisc/include/asm/bitops.h | 1 -
arch/parisc/include/asm/bitops.h | 2 -
arch/powerpc/include/asm/bitops.h | 2 -
arch/powerpc/platforms/pasemi/dma_lib.c | 4 +-
arch/riscv/include/asm/bitops.h | 1 -
arch/s390/Kconfig | 1 -
arch/s390/include/asm/bitops.h | 1 -
arch/s390/kvm/kvm-s390.c | 2 +-
arch/sh/include/asm/bitops.h | 1 -
arch/sparc/include/asm/bitops_32.h | 1 -
arch/sparc/include/asm/bitops_64.h | 2 -
arch/x86/Kconfig | 1 -
arch/x86/include/asm/bitops.h | 2 -
arch/x86/um/Kconfig | 1 -
arch/xtensa/include/asm/bitops.h | 1 -
drivers/block/rnbd/rnbd-clt.c | 2 +-
drivers/dma/ti/edma.c | 2 +-
drivers/iio/adc/ad7124.c | 2 +-
drivers/infiniband/hw/irdma/hw.c | 16 +-
drivers/media/cec/core/cec-core.c | 2 +-
drivers/media/mc/mc-devnode.c | 2 +-
drivers/pci/controller/dwc/pci-dra7xx.c | 2 +-
drivers/scsi/lpfc/lpfc_sli.c | 10 +-
drivers/soc/ti/k3-ringacc.c | 4 +-
drivers/tty/n_tty.c | 2 +-
drivers/virt/acrn/ioreq.c | 3 +-
fs/f2fs/segment.c | 8 +-
fs/ocfs2/cluster/heartbeat.c | 2 +-
fs/ocfs2/dlm/dlmdomain.c | 4 +-
fs/ocfs2/dlm/dlmmaster.c | 18 +--
fs/ocfs2/dlm/dlmrecovery.c | 2 +-
fs/ocfs2/dlm/dlmthread.c | 2 +-
include/asm-generic/bitops.h | 1 -
include/asm-generic/bitops/le.h | 64 --------
include/linux/bitmap.h | 1 +
include/linux/cpumask.h | 30 ++--
.../bitops => include/linux}/find.h | 149 +++++++++++++++++-
lib/Kconfig | 3 -
lib/find_bit.c | 21 +++
lib/find_bit_benchmark.c | 21 +++
lib/genalloc.c | 2 +-
net/ncsi/ncsi-manage.c | 4 +-
tools/include/asm-generic/bitops.h | 1 -
tools/include/linux/bitmap.h | 7 +-
.../bitops => tools/include/linux}/find.h | 54 +++++--
tools/lib/find_bit.c | 20 +++
60 files changed, 319 insertions(+), 185 deletions(-)
rename {tools/include/asm-generic/bitops => include/linux}/find.h (50%)
rename {include/asm-generic/bitops => tools/include/linux}/find.h (83%)
--
2.30.2
next reply other threads:[~2021-06-12 12:37 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-12 12:36 Yury Norov [this message]
2021-06-12 12:36 ` [PATCH 1/8] bitops: protect find_first_{,zero}_bit properly Yury Norov
2021-06-12 21:38 ` Andy Shevchenko
2021-06-29 1:29 ` Yury Norov
2021-06-12 12:36 ` [PATCH 2/8] bitops: move find_bit_*_le functions from le.h to find.h Yury Norov
2021-06-12 12:36 ` [PATCH 3/8] include: move find.h from asm_generic to linux Yury Norov
2021-06-12 12:36 ` [PATCH RESEND 4/8] arch: remove GENERIC_FIND_FIRST_BIT entirely Yury Norov
2021-06-12 12:36 ` [PATCH 5/8] lib: add find_first_and_bit() Yury Norov
2021-06-14 15:45 ` Alexey Klimov
2021-06-12 12:36 ` [PATCH 6/8] cpumask: use find_first_and_bit() Yury Norov
2021-06-12 12:36 ` [PATCH 7/8] all: replace find_next{,_zero}_bit with find_first{,_zero}_bit where appropriate Yury Norov
2021-06-12 21:47 ` Andy Shevchenko
2021-06-13 0:32 ` Yury Norov
[not found] ` <CAHp75VeXJcPai=w3Fbx11TPf_CZTusD6U_E2R+XSaCcebV7uBw@mail.gmail.com>
2021-06-15 1:07 ` Andrew Morton
2021-06-12 12:36 ` [PATCH 8/8] tools: sync tools/bitmap with mother linux Yury Norov
2021-06-13 23:16 ` [PATCH] cpumask: replace cpumask_next_* with cpumask_first_* where appropriate Yury Norov
2021-06-29 1:48 ` [PATCH 0/8] all: use find_next_*_bit() instead of find_first_*_bit() where possible Yury Norov
2021-06-29 16:18 ` Andy Shevchenko
2021-07-28 15:00 ` Yury Norov
2021-07-28 15:13 ` Joe Perches
2021-07-28 15:55 ` Yury Norov
2021-07-28 16:06 ` Joe Perches
2021-07-28 16:28 ` Yury Norov
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20210612123639.329047-1-yury.norov@gmail.com \
--to=yury.norov@gmail.com \
--cc=James.Bottomley@HansenPartnership.com \
--cc=aklimov@redhat.com \
--cc=akpm@linux-foundation.org \
--cc=alobakin@pm.me \
--cc=andriy.shevchenko@linux.intel.com \
--cc=arnd@arndb.de \
--cc=bcain@codeaurora.org \
--cc=benh@kernel.crashing.org \
--cc=bristot@redhat.com \
--cc=catalin.marinas@arm.com \
--cc=dalias@libc.org \
--cc=david@redhat.com \
--cc=geert@linux-m68k.org \
--cc=hca@linux.ibm.com \
--cc=jaegeuk@kernel.org \
--cc=jonas@southpole.se \
--cc=kuba@kernel.org \
--cc=linux-arch@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux@rasmusvillemoes.dk \
--cc=mingo@redhat.com \
--cc=palmer@dabbelt.com \
--cc=sam@mendozajonas.com \
--cc=stefan.kristiansson@saunalahti.fi \
--cc=tsbogend@alpha.franken.de \
--cc=will@kernel.org \
--cc=ysato@users.sourceforge.jp \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.