Re: [PATCH 3/9] all: replace bitmap_weigth() with bitmap_{empty,full,eq,gt,le}

Greg Kroah-Hartman
2021-11-28T08:03:52Z

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