[PATCH] Octeontx2-af: use bitmap_empty() where appropriate

[PATCH] Octeontx2-af: use bitmap_empty() where appropriate

[Yury Norov (NVIDIA)]

bitmap_empty() is more verbose and efficient, as it stops traversing
bitmap as soon as the 1st set bit found.

Switch the driver from bitmap_weight() to bitmap_empty() where
appropriate.

Signed-off-by: Yury Norov (NVIDIA) <yury.norov@gmail.com>
---
 drivers/net/ethernet/marvell/octeontx2/af/cgx.c | 6 +++---
 drivers/net/ethernet/marvell/octeontx2/af/rpm.c | 2 +-
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/net/ethernet/marvell/octeontx2/af/cgx.c b/drivers/net/ethernet/marvell/octeontx2/af/cgx.c
index 42044cd810b1..2958522f3198 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/cgx.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/cgx.c
@@ -672,7 +672,7 @@ void cgx_lmac_enadis_rx_pause_fwding(void *cgxd, int lmac_id, bool enable)
 		return;
 
 	/* Pause frames are not enabled just return */
-	if (!bitmap_weight(lmac->rx_fc_pfvf_bmap.bmap, lmac->rx_fc_pfvf_bmap.max))
+	if (bitmap_empty(lmac->rx_fc_pfvf_bmap.bmap, lmac->rx_fc_pfvf_bmap.max))
 		return;
 
 	cgx_lmac_get_pause_frm_status(cgx, lmac_id, &rx_pause, &tx_pause);
@@ -970,13 +970,13 @@ int verify_lmac_fc_cfg(void *cgxd, int lmac_id, u8 tx_pause, u8 rx_pause,
 		set_bit(pfvf_idx, lmac->tx_fc_pfvf_bmap.bmap);
 
 	/* check if other pfvfs are using flow control */
-	if (!rx_pause && bitmap_weight(lmac->rx_fc_pfvf_bmap.bmap, lmac->rx_fc_pfvf_bmap.max)) {
+	if (!rx_pause && !bitmap_empty(lmac->rx_fc_pfvf_bmap.bmap, lmac->rx_fc_pfvf_bmap.max)) {
 		dev_warn(&cgx->pdev->dev,
 			 "Receive Flow control disable not permitted as its used by other PFVFs\n");
 		return -EPERM;
 	}
 
-	if (!tx_pause && bitmap_weight(lmac->tx_fc_pfvf_bmap.bmap, lmac->tx_fc_pfvf_bmap.max)) {
+	if (!tx_pause && !bitmap_empty(lmac->tx_fc_pfvf_bmap.bmap, lmac->tx_fc_pfvf_bmap.max)) {
 		dev_warn(&cgx->pdev->dev,
 			 "Transmit Flow control disable not permitted as its used by other PFVFs\n");
 		return -EPERM;
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rpm.c b/drivers/net/ethernet/marvell/octeontx2/af/rpm.c
index 2e9945446199..fba76846fcbb 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rpm.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rpm.c
@@ -178,7 +178,7 @@ void rpm_lmac_enadis_rx_pause_fwding(void *rpmd, int lmac_id, bool enable)
 		return;
 
 	/* Pause frames are not enabled just return */
-	if (!bitmap_weight(lmac->rx_fc_pfvf_bmap.bmap, lmac->rx_fc_pfvf_bmap.max))
+	if (bitmap_empty(lmac->rx_fc_pfvf_bmap.bmap, lmac->rx_fc_pfvf_bmap.max))
 		return;
 
 	if (enable) {
-- 
2.43.0

Re: [PATCH] Octeontx2-af: use bitmap_empty() where appropriate

[Paolo Abeni]

On 12/16/25 1:47 AM, Yury Norov (NVIDIA) wrote:
> bitmap_empty() is more verbose and efficient, as it stops traversing
> bitmap as soon as the 1st set bit found.
> 
> Switch the driver from bitmap_weight() to bitmap_empty() where
> appropriate.
> 
> Signed-off-by: Yury Norov (NVIDIA) <yury.norov@gmail.com>

## Form letter - net-next-closed

The net-next tree is closed for new drivers, features, code refactoring
and optimizations due to the merge window and the winter break. We are
currently accepting bug fixes only.

Please repost when net-next reopens after Jan 2nd.

RFC patches sent for review only are obviously welcome at any time.