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

Yury Norov
2021-11-28T03:59:28Z

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(-)

diff --git a/arch/nds32/kernel/perf_event_cpu.c b/arch/nds32/kernel/perf_event_cpu.c
index a78a879e7ef1..05a1cd258356 100644
--- a/arch/nds32/kernel/perf_event_cpu.c
+++ b/arch/nds32/kernel/perf_event_cpu.c
@@ -695,10 +695,8 @@ static void nds32_pmu_enable(struct pmu *pmu)
{
struct nds32_pmu *nds32_pmu = to_nds32_pmu(pmu);
struct pmu_hw_events *hw_events = nds32_pmu->get_hw_events();
- int enabled = bitmap_weight(hw_events->used_mask,
- nds32_pmu->num_events);

- if (enabled)
+ if (!bitmap_empty(hw_events->used_mask, nds32_pmu->num_events))
nds32_pmu->start(nds32_pmu);
}

diff --git a/arch/x86/kernel/cpu/resctrl/rdtgroup.c b/arch/x86/kernel/cpu/resctrl/rdtgroup.c
index b57b3db9a6a7..94e7e6b420e4 100644
--- a/arch/x86/kernel/cpu/resctrl/rdtgroup.c
+++ b/arch/x86/kernel/cpu/resctrl/rdtgroup.c
@@ -2749,10 +2749,10 @@ static int __init_one_rdt_domain(struct rdt_domain *d, struct resctrl_schema *s,
cfg->new_ctrl = cbm_ensure_valid(cfg->new_ctrl, r);
/*
* Assign the u32 CBM to an unsigned long to ensure that
- * bitmap_weight() does not access out-of-bound memory.
+ * bitmap_weight_le() does not access out-of-bound memory.
*/
tmp_cbm = cfg->new_ctrl;
- if (bitmap_weight(&tmp_cbm, r->cache.cbm_len) < r->cache.min_cbm_bits) {
+ if (bitmap_weight_le(&tmp_cbm, r->cache.cbm_len, r->cache.min_cbm_bits) {
rdt_last_cmd_printf("No space on %s:%d\n", s->name, d->id);
return -ENOSPC;
}
diff --git a/arch/x86/kvm/hyperv.c b/arch/x86/kvm/hyperv.c
index 5e19e6e4c2ce..8b72c896e0f1 100644
--- a/arch/x86/kvm/hyperv.c
+++ b/arch/x86/kvm/hyperv.c
@@ -90,7 +90,7 @@ static void synic_update_vector(struct kvm_vcpu_hv_synic *synic,
{
struct kvm_vcpu *vcpu = hv_synic_to_vcpu(synic);
struct kvm_hv *hv = to_kvm_hv(vcpu->kvm);
- int auto_eoi_old, auto_eoi_new;
+ bool auto_eoi_old, auto_eoi_new;

if (vector < HV_SYNIC_FIRST_VALID_VECTOR)
return;
@@ -100,16 +100,16 @@ static void synic_update_vector(struct kvm_vcpu_hv_synic *synic,
else
__clear_bit(vector, synic->vec_bitmap);

- auto_eoi_old = bitmap_weight(synic->auto_eoi_bitmap, 256);
+ auto_eoi_old = bitmap_empty(synic->auto_eoi_bitmap, 256);

if (synic_has_vector_auto_eoi(synic, vector))
__set_bit(vector, synic->auto_eoi_bitmap);
else
__clear_bit(vector, synic->auto_eoi_bitmap);

- auto_eoi_new = bitmap_weight(synic->auto_eoi_bitmap, 256);
+ auto_eoi_new = bitmap_empty(synic->auto_eoi_bitmap, 256);

- if (!!auto_eoi_old == !!auto_eoi_new)
+ if (auto_eoi_old == auto_eoi_new)
return;

down_write(&vcpu->kvm->arch.apicv_update_lock);
diff --git a/drivers/crypto/ccp/ccp-dev-v5.c b/drivers/crypto/ccp/ccp-dev-v5.c
index 7b73332d6aa1..f569e8b99851 100644
--- a/drivers/crypto/ccp/ccp-dev-v5.c
+++ b/drivers/crypto/ccp/ccp-dev-v5.c
@@ -611,7 +611,6 @@ static int ccp_find_and_assign_lsb_to_q(struct ccp_device *ccp,
{
DECLARE_BITMAP(qlsb, MAX_LSB_CNT);
int bitno;
- int qlsb_wgt;
int i;

/* For each queue:
@@ -627,9 +626,7 @@ static int ccp_find_and_assign_lsb_to_q(struct ccp_device *ccp,
for (i = 0; i < ccp->cmd_q_count; i++) {
struct ccp_cmd_queue *cmd_q = &ccp->cmd_q[i];

- qlsb_wgt = bitmap_weight(cmd_q->lsbmask, MAX_LSB_CNT);
-
- if (qlsb_wgt == lsb_cnt) {
+ if (bitmap_weight_eq(cmd_q->lsbmask, MAX_LSB_CNT, lsb_cnt)) {
bitmap_copy(qlsb, cmd_q->lsbmask, MAX_LSB_CNT);

bitno = find_first_bit(qlsb, MAX_LSB_CNT);
diff --git a/drivers/gpu/drm/msm/disp/mdp5/mdp5_smp.c b/drivers/gpu/drm/msm/disp/mdp5/mdp5_smp.c
index d7fa2c49e741..56a3063545ec 100644
--- a/drivers/gpu/drm/msm/disp/mdp5/mdp5_smp.c
+++ b/drivers/gpu/drm/msm/disp/mdp5/mdp5_smp.c
@@ -68,7 +68,7 @@ static int smp_request_block(struct mdp5_smp *smp,
uint8_t reserved;

/* we shouldn't be requesting blocks for an in-use client: */
- WARN_ON(bitmap_weight(cs, cnt) > 0);
+ WARN_ON(!bitmap_empty(cs, cnt));

reserved = smp->reserved[cid];

diff --git a/drivers/iio/adc/mxs-lradc-adc.c b/drivers/iio/adc/mxs-lradc-adc.c
index bca79a93cbe4..b3ec713b9c88 100644
--- a/drivers/iio/adc/mxs-lradc-adc.c
+++ b/drivers/iio/adc/mxs-lradc-adc.c
@@ -540,7 +540,6 @@ static bool mxs_lradc_adc_validate_scan_mask(struct iio_dev *iio,
{
struct mxs_lradc_adc *adc = iio_priv(iio);
struct mxs_lradc *lradc = adc->lradc;
- const int map_chans = bitmap_weight(mask, LRADC_MAX_TOTAL_CHANS);
int rsvd_chans = 0;
unsigned long rsvd_mask = 0;

@@ -561,7 +560,7 @@ static bool mxs_lradc_adc_validate_scan_mask(struct iio_dev *iio,
return false;

/* Test for attempts to map more channels then available slots. */
- if (map_chans + rsvd_chans > LRADC_MAX_MAPPED_CHANS)
+ if (bitmap_weight_gt(mask, LRADC_MAX_TOTAL_CHANS, LRADC_MAX_MAPPED_CHAN - rsvd_chans)
return false;

return true;
diff --git a/drivers/iio/dummy/iio_simple_dummy_buffer.c b/drivers/iio/dummy/iio_simple_dummy_buffer.c
index 59aa60d4ca37..cd2470ddf82b 100644
--- a/drivers/iio/dummy/iio_simple_dummy_buffer.c
+++ b/drivers/iio/dummy/iio_simple_dummy_buffer.c
@@ -72,8 +72,8 @@ static irqreturn_t iio_simple_dummy_trigger_h(int irq, void *p)
int i, j;

for (i = 0, j = 0;
- i < bitmap_weight(indio_dev->active_scan_mask,
- indio_dev->masklength);
+ bitmap_weight_gt(indio_dev->active_scan_mask,
+ indio_dev->masklength, i);
i++, j++) {
j = find_next_bit(indio_dev->active_scan_mask,
indio_dev->masklength, j);
diff --git a/drivers/iio/industrialio-buffer.c b/drivers/iio/industrialio-buffer.c
index e180728914c0..4487ece29218 100644
--- a/drivers/iio/industrialio-buffer.c
+++ b/drivers/iio/industrialio-buffer.c
@@ -1804,7 +1804,7 @@ void iio_buffers_free_sysfs_and_mask(struct iio_dev *indio_dev)
bool iio_validate_scan_mask_onehot(struct iio_dev *indio_dev,
const unsigned long *mask)
{
- return bitmap_weight(mask, indio_dev->masklength) == 1;
+ return bitmap_weight_eq(mask, indio_dev->masklength, 1);
}
EXPORT_SYMBOL_GPL(iio_validate_scan_mask_onehot);

diff --git a/drivers/iio/industrialio-trigger.c b/drivers/iio/industrialio-trigger.c
index 93990ff1dfe3..d8cedae0d9da 100644
--- a/drivers/iio/industrialio-trigger.c
+++ b/drivers/iio/industrialio-trigger.c
@@ -298,7 +298,7 @@ int iio_trigger_detach_poll_func(struct iio_trigger *trig,
{
struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(pf->indio_dev);
bool no_other_users =
- bitmap_weight(trig->pool, CONFIG_IIO_CONSUMERS_PER_TRIGGER) == 1;
+ bitmap_weight_eq(trig->pool, CONFIG_IIO_CONSUMERS_PER_TRIGGER, 1);
int ret = 0;

if (trig->ops && trig->ops->set_trigger_state && no_other_users) {
diff --git a/drivers/memstick/core/ms_block.c b/drivers/memstick/core/ms_block.c
index 0cda6c6baefc..5cdd987e78f7 100644
--- a/drivers/memstick/core/ms_block.c
+++ b/drivers/memstick/core/ms_block.c
@@ -155,8 +155,8 @@ static int msb_validate_used_block_bitmap(struct msb_data *msb)
for (i = 0; i < msb->zone_count; i++)
total_free_blocks += msb->free_block_count[i];

- if (msb->block_count - bitmap_weight(msb->used_blocks_bitmap,
- msb->block_count) == total_free_blocks)
+ if (bitmap_weight_eq(msb->used_blocks_bitmap, msb->block_count,
+ msb->block_count - total_free_blocks))
return 0;

pr_err("BUG: free block counts don't match the bitmap");
diff --git a/drivers/net/dsa/b53/b53_common.c b/drivers/net/dsa/b53/b53_common.c
index af4761968733..bc0cc2d226a9 100644
--- a/drivers/net/dsa/b53/b53_common.c
+++ b/drivers/net/dsa/b53/b53_common.c
@@ -1620,7 +1620,7 @@ static int b53_arl_read(struct b53_device *dev, u64 mac,
return 0;
}

- if (bitmap_weight(free_bins, dev->num_arl_bins) == 0)
+ if (bitmap_empty(free_bins, dev->num_arl_bins))
return -ENOSPC;

*idx = find_first_bit(free_bins, dev->num_arl_bins);
diff --git a/drivers/net/ethernet/broadcom/bcmsysport.c b/drivers/net/ethernet/broadcom/bcmsysport.c
index 40933bf5a710..241696fdc6c7 100644
--- a/drivers/net/ethernet/broadcom/bcmsysport.c
+++ b/drivers/net/ethernet/broadcom/bcmsysport.c
@@ -2177,13 +2177,9 @@ static int bcm_sysport_rule_set(struct bcm_sysport_priv *priv,
if (nfc->fs.ring_cookie != RX_CLS_FLOW_WAKE)
return -EOPNOTSUPP;

- /* All filters are already in use, we cannot match more rules */
- if (bitmap_weight(priv->filters, RXCHK_BRCM_TAG_MAX) ==
- RXCHK_BRCM_TAG_MAX)
- return -ENOSPC;
-
index = find_first_zero_bit(priv->filters, RXCHK_BRCM_TAG_MAX);
if (index >= RXCHK_BRCM_TAG_MAX)
+ /* All filters are already in use, we cannot match more rules */
return -ENOSPC;

/* Location is the classification ID, and index is the position
diff --git a/drivers/net/ethernet/intel/ice/ice_virtchnl_pf.c b/drivers/net/ethernet/intel/ice/ice_virtchnl_pf.c
index 217ff5e9a6f1..9d3ed351d77f 100644
--- a/drivers/net/ethernet/intel/ice/ice_virtchnl_pf.c
+++ b/drivers/net/ethernet/intel/ice/ice_virtchnl_pf.c
@@ -384,8 +384,8 @@ ice_set_pfe_link(struct ice_vf *vf, struct virtchnl_pf_event *pfe,
*/
static bool ice_vf_has_no_qs_ena(struct ice_vf *vf)
{
- return (!bitmap_weight(vf->rxq_ena, ICE_MAX_RSS_QS_PER_VF) &&
- !bitmap_weight(vf->txq_ena, ICE_MAX_RSS_QS_PER_VF));
+ return bitmap_empty(vf->rxq_ena, ICE_MAX_RSS_QS_PER_VF) &&
+ bitmap_empty(vf->txq_ena, ICE_MAX_RSS_QS_PER_VF);
}

/**
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c
index 214a38de3f41..35297d8a488b 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c
@@ -246,7 +246,7 @@ int ixgbe_disable_sriov(struct ixgbe_adapter *adapter)
#endif

/* Disable VMDq flag so device will be set in VM mode */
- if (bitmap_weight(adapter->fwd_bitmask, adapter->num_rx_pools) == 1) {
+ if (bitmap_weight_eq(adapter->fwd_bitmask, adapter->num_rx_pools, 1)) {
adapter->flags &= ~IXGBE_FLAG_VMDQ_ENABLED;
adapter->flags &= ~IXGBE_FLAG_SRIOV_ENABLED;
rss = min_t(int, ixgbe_max_rss_indices(adapter),
diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_ethtool.c b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_ethtool.c
index d85db90632d6..a55fd1d0c653 100644
--- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_ethtool.c
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_ethtool.c
@@ -287,7 +287,7 @@ static int otx2_set_channels(struct net_device *dev,
if (!channel->rx_count || !channel->tx_count)
return -EINVAL;

- if (bitmap_weight(&pfvf->rq_bmap, pfvf->hw.rx_queues) > 1) {
+ if (bitmap_weight_gt(&pfvf->rq_bmap, pfvf->hw.rx_queues, 1)) {
netdev_err(dev,
"Receive queues are in use by TC police action\n");
return -EINVAL;
diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_flows.c b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_flows.c
index 77a13fb555fb..55c899a6fcdd 100644
--- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_flows.c
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_flows.c
@@ -353,7 +353,7 @@ int otx2_add_macfilter(struct net_device *netdev, const u8 *mac)
{
struct otx2_nic *pf = netdev_priv(netdev);

- if (bitmap_weight(&pf->flow_cfg->dmacflt_bmap,
+ if (!bitmap_empty(&pf->flow_cfg->dmacflt_bmap,
pf->flow_cfg->dmacflt_max_flows))
netdev_warn(netdev,
"Add %pM to CGX/RPM DMAC filters list as well\n",
@@ -436,7 +436,7 @@ int otx2_get_maxflows(struct otx2_flow_config *flow_cfg)
return 0;

if (flow_cfg->nr_flows == flow_cfg->max_flows ||
- bitmap_weight(&flow_cfg->dmacflt_bmap,
+ !bitmap_empty(&flow_cfg->dmacflt_bmap,
flow_cfg->dmacflt_max_flows))
return flow_cfg->max_flows + flow_cfg->dmacflt_max_flows;
else
@@ -1170,8 +1170,8 @@ int otx2_remove_flow(struct otx2_nic *pfvf, u32 location)
* interface mac address and configure CGX/RPM block in
* promiscuous mode
*/
- if (bitmap_weight(&flow_cfg->dmacflt_bmap,
- flow_cfg->dmacflt_max_flows) == 1)
+ if (bitmap_weight_eq(&flow_cfg->dmacflt_bmap,
+ flow_cfg->dmacflt_max_flows, 1))
otx2_update_rem_pfmac(pfvf, DMAC_ADDR_DEL);
} else {
err = otx2_remove_flow_msg(pfvf, flow->entry, false);
diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c
index 1333edf1c361..d51623ff605c 100644
--- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c
@@ -1115,7 +1115,7 @@ static int otx2_cgx_config_loopback(struct otx2_nic *pf, bool enable)
struct msg_req *msg;
int err;

- if (enable && bitmap_weight(&pf->flow_cfg->dmacflt_bmap,
+ if (enable && !bitmap_empty(&pf->flow_cfg->dmacflt_bmap,
pf->flow_cfg->dmacflt_max_flows))
netdev_warn(pf->netdev,
"CGX/RPM internal loopback might not work as DMAC filters are active\n");
diff --git a/drivers/net/ethernet/mellanox/mlx4/cmd.c b/drivers/net/ethernet/mellanox/mlx4/cmd.c
index e10b7b04b894..766128749bd0 100644
--- a/drivers/net/ethernet/mellanox/mlx4/cmd.c
+++ b/drivers/net/ethernet/mellanox/mlx4/cmd.c
@@ -2803,9 +2803,8 @@ int mlx4_slave_convert_port(struct mlx4_dev *dev, int slave, int port)
{
unsigned n;
struct mlx4_active_ports actv_ports = mlx4_get_active_ports(dev, slave);
- unsigned m = bitmap_weight(actv_ports.ports, dev->caps.num_ports);

- if (port <= 0 || port > m)
+ if (port <= 0 || bitmap_weight_le(actv_ports.ports, dev->caps.num_ports, port))
return -EINVAL;

n = find_first_bit(actv_ports.ports, dev->caps.num_ports);
@@ -3415,10 +3414,6 @@ int mlx4_vf_set_enable_smi_admin(struct mlx4_dev *dev, int slave, int port,
struct mlx4_priv *priv = mlx4_priv(dev);
struct mlx4_active_ports actv_ports = mlx4_get_active_ports(
&priv->dev, slave);
- int min_port = find_first_bit(actv_ports.ports,
- priv->dev.caps.num_ports) + 1;
- int max_port = min_port - 1 +
- bitmap_weight(actv_ports.ports, priv->dev.caps.num_ports);

if (slave == mlx4_master_func_num(dev))
return 0;
@@ -3428,7 +3423,8 @@ int mlx4_vf_set_enable_smi_admin(struct mlx4_dev *dev, int slave, int port,
enabled < 0 || enabled > 1)
return -EINVAL;

- if (min_port == max_port && dev->caps.num_ports > 1) {
+ if (bitmap_weight_eq(actv_ports.ports, priv->dev.caps.num_ports, 1) &&
+ dev->caps.num_ports > 1) {
mlx4_info(dev, "SMI access disallowed for single ported VFs\n");
return -EPROTONOSUPPORT;
}
diff --git a/drivers/net/ethernet/mellanox/mlx4/eq.c b/drivers/net/ethernet/mellanox/mlx4/eq.c
index 9e48509ed3b2..1b38c95ba4f5 100644
--- a/drivers/net/ethernet/mellanox/mlx4/eq.c
+++ b/drivers/net/ethernet/mellanox/mlx4/eq.c
@@ -1437,8 +1437,8 @@ int mlx4_is_eq_shared(struct mlx4_dev *dev, int vector)
if (vector <= 0 || (vector >= dev->caps.num_comp_vectors + 1))
return -EINVAL;

- return !!(bitmap_weight(priv->eq_table.eq[vector].actv_ports.ports,
- dev->caps.num_ports) > 1);
+ return bitmap_weight_gt(priv->eq_table.eq[vector].actv_ports.ports,
+ dev->caps.num_ports, 1);
}
EXPORT_SYMBOL(mlx4_is_eq_shared);

diff --git a/drivers/net/ethernet/mellanox/mlx4/main.c b/drivers/net/ethernet/mellanox/mlx4/main.c
index b187c210d4d6..cfbaa7ac712f 100644
--- a/drivers/net/ethernet/mellanox/mlx4/main.c
+++ b/drivers/net/ethernet/mellanox/mlx4/main.c
@@ -1383,7 +1383,7 @@ static int mlx4_mf_bond(struct mlx4_dev *dev)
dev->persist->num_vfs + 1);

/* only single port vfs are allowed */
- if (bitmap_weight(slaves_port_1_2, dev->persist->num_vfs + 1) > 1) {
+ if (bitmap_weight_gt(slaves_port_1_2, dev->persist->num_vfs + 1, 1)) {
mlx4_warn(dev, "HA mode unsupported for dual ported VFs\n");
return -EINVAL;
}
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c b/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c
index c8757c5a812b..ec81ef9299e6 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c
@@ -1670,7 +1670,7 @@ static int mlx5e_set_fecparam(struct net_device *netdev,
int err;

bitmap_from_arr32(&fec_bitmap, &fecparam->fec, sizeof(fecparam->fec) * BITS_PER_BYTE);
- if (bitmap_weight(&fec_bitmap, ETHTOOL_FEC_LLRS_BIT + 1) > 1)
+ if (bitmap_weight_gt(&fec_bitmap, ETHTOOL_FEC_LLRS_BIT + 1, 1))
return -EOPNOTSUPP;

for (mode = 0; mode < ARRAY_SIZE(pplm_fec_2_ethtool); mode++) {
diff --git a/drivers/net/ethernet/qlogic/qed/qed_dev.c b/drivers/net/ethernet/qlogic/qed/qed_dev.c
index cc4ec2bb36db..3a588decffb5 100644
--- a/drivers/net/ethernet/qlogic/qed/qed_dev.c
+++ b/drivers/net/ethernet/qlogic/qed/qed_dev.c
@@ -1702,8 +1702,7 @@ static u16 *qed_init_qm_get_idx_from_flags(struct qed_hwfn *p_hwfn,
struct qed_qm_info *qm_info = &p_hwfn->qm_info;

/* Can't have multiple flags set here */
- if (bitmap_weight(&pq_flags,
- sizeof(pq_flags) * BITS_PER_BYTE) > 1) {
+ if (bitmap_weight_gt(&pq_flags, sizeof(pq_flags) * BITS_PER_BYTE, 1)) {
DP_ERR(p_hwfn, "requested multiple pq flags 0x%lx\n", pq_flags);
goto err;
}
diff --git a/drivers/net/ethernet/qlogic/qed/qed_rdma.c b/drivers/net/ethernet/qlogic/qed/qed_rdma.c
index 23b668de4640..b6e2e17bac04 100644
--- a/drivers/net/ethernet/qlogic/qed/qed_rdma.c
+++ b/drivers/net/ethernet/qlogic/qed/qed_rdma.c
@@ -336,7 +336,7 @@ void qed_rdma_bmap_free(struct qed_hwfn *p_hwfn,

/* print aligned non-zero lines, if any */
for (item = 0, line = 0; line < last_line; line++, item += 8)
- if (bitmap_weight((unsigned long *)&pmap[item], 64 * 8))
+ if (!bitmap_empty((unsigned long *)&pmap[item], 64 * 8))
DP_NOTICE(p_hwfn,
"line 0x%04x: 0x%016llx 0x%016llx 0x%016llx 0x%016llx 0x%016llx 0x%016llx 0x%016llx 0x%016llx\n",
line,
@@ -350,7 +350,7 @@ void qed_rdma_bmap_free(struct qed_hwfn *p_hwfn,

/* print last unaligned non-zero line, if any */
if ((bmap->max_count % (64 * 8)) &&
- (bitmap_weight((unsigned long *)&pmap[item],
+ (!bitmap_empty((unsigned long *)&pmap[item],
bmap->max_count - item * 64))) {
offset = sprintf(str_last_line, "line 0x%04x: ", line);
for (; item < last_item; item++)
diff --git a/drivers/net/ethernet/qlogic/qed/qed_roce.c b/drivers/net/ethernet/qlogic/qed/qed_roce.c
index 071b4aeaddf2..134ecfca96a3 100644
--- a/drivers/net/ethernet/qlogic/qed/qed_roce.c
+++ b/drivers/net/ethernet/qlogic/qed/qed_roce.c
@@ -76,7 +76,7 @@ void qed_roce_stop(struct qed_hwfn *p_hwfn)
* We delay for a short while if an async destroy QP is still expected.
* Beyond the added delay we clear the bitmap anyway.
*/
- while (bitmap_weight(rcid_map->bitmap, rcid_map->max_count)) {
+ while (!bitmap_empty(rcid_map->bitmap, rcid_map->max_count)) {
/* If the HW device is during recovery, all resources are
* immediately reset without receiving a per-cid indication
* from HW. In this case we don't expect the cid bitmap to be
diff --git a/drivers/perf/arm-cci.c b/drivers/perf/arm-cci.c
index 54aca3a62814..96e09fa40909 100644
--- a/drivers/perf/arm-cci.c
+++ b/drivers/perf/arm-cci.c
@@ -1096,7 +1096,7 @@ static void cci_pmu_enable(struct pmu *pmu)
{
struct cci_pmu *cci_pmu = to_cci_pmu(pmu);
struct cci_pmu_hw_events *hw_events = &cci_pmu->hw_events;
- int enabled = bitmap_weight(hw_events->used_mask, cci_pmu->num_cntrs);
+ bool enabled = !bitmap_empty(hw_events->used_mask, cci_pmu->num_cntrs);
unsigned long flags;

if (!enabled)
diff --git a/drivers/perf/arm_pmu.c b/drivers/perf/arm_pmu.c
index 295cc7952d0e..a31b302b0ade 100644
--- a/drivers/perf/arm_pmu.c
+++ b/drivers/perf/arm_pmu.c
@@ -524,7 +524,7 @@ static void armpmu_enable(struct pmu *pmu)
{
struct arm_pmu *armpmu = to_arm_pmu(pmu);
struct pmu_hw_events *hw_events = this_cpu_ptr(armpmu->hw_events);
- int enabled = bitmap_weight(hw_events->used_mask, armpmu->num_events);
+ bool enabled = !bitmap_empty(hw_events->used_mask, armpmu->num_events);

/* For task-bound events we may be called on other CPUs */
if (!cpumask_test_cpu(smp_processor_id(), &armpmu->supported_cpus))
@@ -785,7 +785,7 @@ static int cpu_pm_pmu_notify(struct notifier_block *b, unsigned long cmd,
{
struct arm_pmu *armpmu = container_of(b, struct arm_pmu, cpu_pm_nb);
struct pmu_hw_events *hw_events = this_cpu_ptr(armpmu->hw_events);
- int enabled = bitmap_weight(hw_events->used_mask, armpmu->num_events);
+ bool enabled = !bitmap_empty(hw_events->used_mask, armpmu->num_events);

if (!cpumask_test_cpu(smp_processor_id(), &armpmu->supported_cpus))
return NOTIFY_DONE;
diff --git a/drivers/perf/hisilicon/hisi_uncore_pmu.c b/drivers/perf/hisilicon/hisi_uncore_pmu.c
index a738aeab5c04..358e4e284a62 100644
--- a/drivers/perf/hisilicon/hisi_uncore_pmu.c
+++ b/drivers/perf/hisilicon/hisi_uncore_pmu.c
@@ -393,7 +393,7 @@ EXPORT_SYMBOL_GPL(hisi_uncore_pmu_read);
void hisi_uncore_pmu_enable(struct pmu *pmu)
{
struct hisi_pmu *hisi_pmu = to_hisi_pmu(pmu);
- int enabled = bitmap_weight(hisi_pmu->pmu_events.used_mask,
+ bool enabled = !bitmap_empty(hisi_pmu->pmu_events.used_mask,
hisi_pmu->num_counters);

if (!enabled)
diff --git a/drivers/perf/thunderx2_pmu.c b/drivers/perf/thunderx2_pmu.c
index 05378c0fd8f3..c8fee2e1e6d4 100644
--- a/drivers/perf/thunderx2_pmu.c
+++ b/drivers/perf/thunderx2_pmu.c
@@ -623,8 +623,7 @@ static void tx2_uncore_event_start(struct perf_event *event, int flags)
return;

/* Start timer for first event */
- if (bitmap_weight(tx2_pmu->active_counters,
- tx2_pmu->max_counters) == 1) {
+ if (bitmap_weight_eq(tx2_pmu->active_counters, tx2_pmu->max_counters, 1)) {
hrtimer_start(&tx2_pmu->hrtimer,
ns_to_ktime(tx2_pmu->hrtimer_interval),
HRTIMER_MODE_REL_PINNED);
diff --git a/drivers/perf/xgene_pmu.c b/drivers/perf/xgene_pmu.c
index 2b6d476bd213..88bd100a9633 100644
--- a/drivers/perf/xgene_pmu.c
+++ b/drivers/perf/xgene_pmu.c
@@ -867,7 +867,7 @@ static void xgene_perf_pmu_enable(struct pmu *pmu)
{
struct xgene_pmu_dev *pmu_dev = to_pmu_dev(pmu);
struct xgene_pmu *xgene_pmu = pmu_dev->parent;
- int enabled = bitmap_weight(pmu_dev->cntr_assign_mask,
+ bool enabled = !bitmap_empty(pmu_dev->cntr_assign_mask,
pmu_dev->max_counters);

if (!enabled)
diff --git a/drivers/pwm/pwm-pca9685.c b/drivers/pwm/pwm-pca9685.c
index c56001a790d0..49841a5681fb 100644
--- a/drivers/pwm/pwm-pca9685.c
+++ b/drivers/pwm/pwm-pca9685.c
@@ -98,7 +98,7 @@ static bool pca9685_prescaler_can_change(struct pca9685 *pca, int channel)
if (bitmap_empty(pca->pwms_enabled, PCA9685_MAXCHAN + 1))
return true;
/* More than one PWM enabled: Change not allowed */
- if (bitmap_weight(pca->pwms_enabled, PCA9685_MAXCHAN + 1) > 1)
+ if (bitmap_weight_gt(pca->pwms_enabled, PCA9685_MAXCHAN + 1, 1))
return false;
/*
* Only one PWM enabled: Change allowed if the PWM about to
diff --git a/drivers/staging/media/tegra-video/vi.c b/drivers/staging/media/tegra-video/vi.c
index 69d9787d5338..dfb7435aca83 100644
--- a/drivers/staging/media/tegra-video/vi.c
+++ b/drivers/staging/media/tegra-video/vi.c
@@ -436,7 +436,7 @@ static int tegra_channel_enum_format(struct file *file, void *fh,
if (!IS_ENABLED(CONFIG_VIDEO_TEGRA_TPG))
fmts_bitmap = chan->fmts_bitmap;

- if (f->index >= bitmap_weight(fmts_bitmap, MAX_FORMAT_NUM))
+ if (bitmap_weight_le(fmts_bitmap, MAX_FORMAT_NUM, f->index + 1))
return -EINVAL;

for (i = 0; i < f->index + 1; i++, index++)
diff --git a/drivers/thermal/intel/intel_powerclamp.c b/drivers/thermal/intel/intel_powerclamp.c
index 9b68489a2356..72cf8925ea3c 100644
--- a/drivers/thermal/intel/intel_powerclamp.c
+++ b/drivers/thermal/intel/intel_powerclamp.c
@@ -556,12 +556,10 @@ static void end_power_clamp(void)
* stop faster.
*/
clamping = false;
- if (bitmap_weight(cpu_clamping_mask, num_possible_cpus())) {
- for_each_set_bit(i, cpu_clamping_mask, num_possible_cpus()) {
- pr_debug("clamping worker for cpu %d alive, destroy\n",
- i);
- stop_power_clamp_worker(i);
- }
+ for_each_set_bit(i, cpu_clamping_mask, num_possible_cpus()) {
+ pr_debug("clamping worker for cpu %d alive, destroy\n",
+ i);
+ stop_power_clamp_worker(i);
}
}

diff --git a/fs/ocfs2/cluster/heartbeat.c b/fs/ocfs2/cluster/heartbeat.c
index a17be1618bf7..fb2de42400e5 100644
--- a/fs/ocfs2/cluster/heartbeat.c
+++ b/fs/ocfs2/cluster/heartbeat.c
@@ -874,8 +874,8 @@ static void o2hb_set_quorum_device(struct o2hb_region *reg)
* If global heartbeat active, unpin all regions if the
* region count > CUT_OFF
*/
- if (bitmap_weight(o2hb_quorum_region_bitmap,
- O2NM_MAX_REGIONS) > O2HB_PIN_CUT_OFF)
+ if (bitmap_weight_gt(o2hb_quorum_region_bitmap,
+ O2NM_MAX_REGIONS, O2HB_PIN_CUT_OFF))
o2hb_region_unpin(NULL);
unlock:
spin_unlock(&o2hb_live_lock);
@@ -1845,7 +1845,7 @@ static ssize_t o2hb_region_dev_store(struct config_item *item,
live_threshold = O2HB_LIVE_THRESHOLD;
if (o2hb_global_heartbeat_active()) {
spin_lock(&o2hb_live_lock);
- if (bitmap_weight(o2hb_region_bitmap, O2NM_MAX_REGIONS) == 1)
+ if (bitmap_weight_eq(o2hb_region_bitmap, O2NM_MAX_REGIONS, 1))
live_threshold <<= 1;
spin_unlock(&o2hb_live_lock);
}
@@ -2120,8 +2120,8 @@ static void o2hb_heartbeat_group_drop_item(struct config_group *group,
if (!o2hb_dependent_users)
goto unlock;

- if (bitmap_weight(o2hb_quorum_region_bitmap,
- O2NM_MAX_REGIONS) <= O2HB_PIN_CUT_OFF)
+ if (bitmap_weight_le(o2hb_quorum_region_bitmap,
+ O2NM_MAX_REGIONS, O2HB_PIN_CUT_OFF + 1))
o2hb_region_pin(NULL);

unlock:
@@ -2364,8 +2364,8 @@ static int o2hb_region_inc_user(const char *region_uuid)
if (o2hb_dependent_users > 1)
goto unlock;

- if (bitmap_weight(o2hb_quorum_region_bitmap,
- O2NM_MAX_REGIONS) <= O2HB_PIN_CUT_OFF)
+ if (bitmap_weight_le(o2hb_quorum_region_bitmap,
+ O2NM_MAX_REGIONS, O2HB_PIN_CUT_OFF + 1))
ret = o2hb_region_pin(NULL);

unlock:
--
2.25.1