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From: Yury Norov <yury.norov@gmail.com>
To: "Andy Shevchenko" <andriy.shevchenko@linux.intel.com>,
	"David Laight" <David.Laight@ACULAB.COM>,
	"Greg Kroah-Hartman" <gregkh@linuxfoundation.org>,
	"Joe Perches" <joe@perches.com>,
	"Julia Lawall" <Julia.Lawall@inria.fr>,
	"Michał Mirosław" <mirq-linux@rere.qmqm.pl>,
	"Nicholas Piggin" <npiggin@gmail.com>,
	"Nicolas Palix" <nicolas.palix@imag.fr>,
	"Peter Zijlstra" <peterz@infradead.org>,
	"Rasmus Villemoes" <linux@rasmusvillemoes.dk>,
	"Matti Vaittinen" <Matti.Vaittinen@fi.rohmeurope.com>,
	linux-kernel@vger.kernel.org
Cc: Yury Norov <yury.norov@gmail.com>,
	"David S . Miller" <davem@davemloft.net>,
	Eric Dumazet <edumazet@google.com>,
	Geetha sowjanya <gakula@marvell.com>,
	Jakub Kicinski <kuba@kernel.org>,
	Jerin Jacob <jerinj@marvell.com>,
	Linu Cherian <lcherian@marvell.com>,
	Paolo Abeni <pabeni@redhat.com>,
	Subbaraya Sundeep <sbhatta@marvell.com>,
	Sunil Goutham <sgoutham@marvell.com>,
	hariprasad <hkelam@marvell.com>,
	netdev@vger.kernel.org
Subject: [PATCH 06/22] octeontx2: use bitmap_empty() instead of bitmap_weight()
Date: Tue, 10 May 2022 08:47:34 -0700	[thread overview]
Message-ID: <20220510154750.212913-7-yury.norov@gmail.com> (raw)
In-Reply-To: <20220510154750.212913-1-yury.norov@gmail.com>

bitmap_empty() is better than bitmap_weight() because it may return
earlier, and improves on readability.

CC: David S. Miller <davem@davemloft.net>
CC: Eric Dumazet <edumazet@google.com>
CC: Geetha sowjanya <gakula@marvell.com>
CC: Jakub Kicinski <kuba@kernel.org>
CC: Jerin Jacob <jerinj@marvell.com>
CC: Linu Cherian <lcherian@marvell.com>
CC: Paolo Abeni <pabeni@redhat.com>
CC: Subbaraya Sundeep <sbhatta@marvell.com>
CC: Sunil Goutham <sgoutham@marvell.com>
CC: hariprasad <hkelam@marvell.com>
CC: netdev@vger.kernel.org
CC: linux-kernel@vger.kernel.org
Signed-off-by: Yury Norov <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 25491edc35ce..921bf9cb707b 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/cgx.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/cgx.c
@@ -615,7 +615,7 @@ 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);
@@ -870,13 +870,13 @@ 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 47e83d7a5804..f2c866825c81 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rpm.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rpm.c
@@ -109,7 +109,7 @@ 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) {
-- 
2.32.0


  parent reply	other threads:[~2022-05-10 15:48 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <20220510154750.212913-1-yury.norov@gmail.com>
2022-05-10 15:47 ` [PATCH 04/22] ice: use bitmap_empty() in ice_vf_has_no_qs_ena() Yury Norov
2022-05-10 15:47 ` Yury Norov [this message]
2022-05-10 21:31   ` [PATCH 06/22] octeontx2: use bitmap_empty() instead of bitmap_weight() Jakub Kicinski
2022-05-10 15:47 ` [PATCH 09/22] qed: replace bitmap_weight() with MANY_BITS() Yury Norov
2022-05-10 15:47 ` [PATCH 10/22] net/mlx5e: simplify mlx5e_set_fecparam() Yury Norov
2022-05-10 15:47 ` [PATCH 15/22] net/mlx5: use cpumask_weight_gt() in irq_pool_request_irq() Yury Norov

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