From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: Yury Norov <yury.norov@gmail.com>
Cc: linux-kernel@vger.kernel.org,
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Subject: Re: [PATCH 3/9] all: replace bitmap_weigth() with bitmap_{empty,full,eq,gt,le}
Date: Sun, 28 Nov 2021 09:01:41 +0100 [thread overview]
Message-ID: <YaM3ZeQS4tHzsRkK@kroah.com> (raw)
In-Reply-To: <20211128035704.270739-4-yury.norov@gmail.com>
On Sat, Nov 27, 2021 at 07:56:58PM -0800, Yury Norov wrote:
> bitmap_weight() counts all set bits in the bitmap unconditionally.
> However in some cases we can traverse a part of bitmap when we
> only need to check if number of set bits is greater, less or equal
> to some number.
>
> This patch replaces bitmap_weight() with one of
> bitmap_{empty,full,eq,gt,le), as appropriate.
>
> In some places driver code has been optimized further, where it's
> trivial.
>
> Signed-off-by: Yury Norov <yury.norov@gmail.com>
> ---
> arch/nds32/kernel/perf_event_cpu.c | 4 +---
> arch/x86/kernel/cpu/resctrl/rdtgroup.c | 4 ++--
> arch/x86/kvm/hyperv.c | 8 ++++----
> drivers/crypto/ccp/ccp-dev-v5.c | 5 +----
> drivers/gpu/drm/msm/disp/mdp5/mdp5_smp.c | 2 +-
> drivers/iio/adc/mxs-lradc-adc.c | 3 +--
> drivers/iio/dummy/iio_simple_dummy_buffer.c | 4 ++--
> drivers/iio/industrialio-buffer.c | 2 +-
> drivers/iio/industrialio-trigger.c | 2 +-
> drivers/memstick/core/ms_block.c | 4 ++--
> drivers/net/dsa/b53/b53_common.c | 2 +-
> drivers/net/ethernet/broadcom/bcmsysport.c | 6 +-----
> drivers/net/ethernet/intel/ice/ice_virtchnl_pf.c | 4 ++--
> drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c | 2 +-
> .../ethernet/marvell/octeontx2/nic/otx2_ethtool.c | 2 +-
> .../ethernet/marvell/octeontx2/nic/otx2_flows.c | 8 ++++----
> .../net/ethernet/marvell/octeontx2/nic/otx2_pf.c | 2 +-
> drivers/net/ethernet/mellanox/mlx4/cmd.c | 10 +++-------
> drivers/net/ethernet/mellanox/mlx4/eq.c | 4 ++--
> drivers/net/ethernet/mellanox/mlx4/main.c | 2 +-
> .../net/ethernet/mellanox/mlx5/core/en_ethtool.c | 2 +-
> drivers/net/ethernet/qlogic/qed/qed_dev.c | 3 +--
> drivers/net/ethernet/qlogic/qed/qed_rdma.c | 4 ++--
> drivers/net/ethernet/qlogic/qed/qed_roce.c | 2 +-
> drivers/perf/arm-cci.c | 2 +-
> drivers/perf/arm_pmu.c | 4 ++--
> drivers/perf/hisilicon/hisi_uncore_pmu.c | 2 +-
> drivers/perf/thunderx2_pmu.c | 3 +--
> drivers/perf/xgene_pmu.c | 2 +-
> drivers/pwm/pwm-pca9685.c | 2 +-
> drivers/staging/media/tegra-video/vi.c | 2 +-
> drivers/thermal/intel/intel_powerclamp.c | 10 ++++------
> fs/ocfs2/cluster/heartbeat.c | 14 +++++++-------
> 33 files changed, 57 insertions(+), 75 deletions(-)
After you get the new functions added to the kernel tree, this patch
should be broken up into one-patch-per-subsystem and submitted through
the various subsystem trees.
thanks,
greg k-h
next prev parent reply other threads:[~2021-11-28 8:03 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-11-28 3:56 [PATCH 0/9] lib/bitmap: optimize bitmap_weight() usage Yury Norov
2021-11-28 3:56 ` [PATCH 1/9] lib/bitmap: add bitmap_weight_{eq,gt,le} Yury Norov
2021-11-28 3:56 ` [PATCH 2/9] lib/bitmap: implement bitmap_{empty,full} with bitmap_weight_eq() Yury Norov
2021-11-28 4:37 ` Michał Mirosław
2021-11-28 6:27 ` Yury Norov
2021-11-28 18:10 ` Michał Mirosław
2021-12-14 19:43 ` Yury Norov
2021-12-15 8:40 ` David Laight
2021-12-15 17:45 ` Yury Norov
2021-11-28 3:56 ` [PATCH 3/9] all: replace bitmap_weigth() with bitmap_{empty,full,eq,gt,le} Yury Norov
2021-11-28 4:47 ` Michał Mirosław
2021-11-28 8:01 ` Greg Kroah-Hartman [this message]
2021-11-28 3:56 ` [PATCH 4/9] tools: sync bitmap_weight() usage with the kernel Yury Norov
2021-11-28 3:57 ` [PATCH 5/9] lib/cpumask: add cpumask_weight_{eq,gt,le} Yury Norov
2021-11-28 3:57 ` [PATCH 6/9] lib/nodemask: add nodemask_weight_{eq,gt,le} Yury Norov
2021-11-28 3:57 ` [PATCH 7/9] lib/cpumask: add num_{possible,present,active}_cpus_{eq,gt,le} Yury Norov
2021-11-28 4:56 ` Michał Mirosław
2021-11-28 5:09 ` Michał Mirosław
2021-11-28 6:34 ` Yury Norov
2021-11-28 17:07 ` Joe Perches
2021-11-28 17:43 ` Yury Norov
2021-11-28 17:54 ` Dennis Zhou
2021-11-28 18:47 ` Yury Norov
2021-11-28 17:56 ` Emil Renner Berthing
2021-11-28 17:57 ` Joe Perches
2021-11-28 3:57 ` [PATCH 8/9] lib/nodemask: add num_node_state_eq() Yury Norov
2021-11-28 3:57 ` [PATCH 9/9] MAINTAINERS: add cpumask and nodemask files to BITMAP_API Yury Norov
2021-11-28 11:08 ` [PATCH 0/9] lib/bitmap: optimize bitmap_weight() usage Nicholas Piggin
2021-11-28 23:36 ` Yury Norov
2021-11-28 18:03 ` mirq-test
2021-11-28 18:05 ` Michał Mirosław
2021-11-29 6:38 ` Yury Norov
2021-11-29 16:34 ` Michał Mirosław
2021-12-02 0:31 ` Yury Norov
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