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Message-Id: <20231118155105.25678-27-yury.norov@gmail.com> Date: Sat, 18 Nov 2023 07:50:57 -0800 From: Yury Norov <yury.norov@...il.com> To: linux-kernel@...r.kernel.org, Jiri Pirko <jiri@...nulli.us>, "David S. Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>, netdev@...r.kernel.org Cc: Yury Norov <yury.norov@...il.com>, Jan Kara <jack@...e.cz>, Mirsad Todorovac <mirsad.todorovac@....unizg.hr>, Matthew Wilcox <willy@...radead.org>, Rasmus Villemoes <linux@...musvillemoes.dk>, Andy Shevchenko <andriy.shevchenko@...ux.intel.com>, Maxim Kuvyrkov <maxim.kuvyrkov@...aro.org>, Alexey Klimov <klimov.linux@...il.com> Subject: [PATCH 26/34] ethernet: rocker: optimize ofdpa_port_internal_vlan_id_get() Optimize ofdpa_port_internal_vlan_id_get() by using find_and_set_bit(), instead of polling every bit from bitmap in a for-loop. Signed-off-by: Yury Norov <yury.norov@...il.com> --- drivers/net/ethernet/rocker/rocker_ofdpa.c | 11 ++++------- 1 file changed, 4 insertions(+), 7 deletions(-) diff --git a/drivers/net/ethernet/rocker/rocker_ofdpa.c b/drivers/net/ethernet/rocker/rocker_ofdpa.c index 826990459fa4..449be8af7ffc 100644 --- a/drivers/net/ethernet/rocker/rocker_ofdpa.c +++ b/drivers/net/ethernet/rocker/rocker_ofdpa.c @@ -2249,14 +2249,11 @@ static __be16 ofdpa_port_internal_vlan_id_get(struct ofdpa_port *ofdpa_port, found = entry; hash_add(ofdpa->internal_vlan_tbl, &found->entry, found->ifindex); - for (i = 0; i < OFDPA_N_INTERNAL_VLANS; i++) { - if (test_and_set_bit(i, ofdpa->internal_vlan_bitmap)) - continue; + i = find_and_set_bit(ofdpa->internal_vlan_bitmap, OFDPA_N_INTERNAL_VLANS); + if (i < OFDPA_N_INTERNAL_VLANS) found->vlan_id = htons(OFDPA_INTERNAL_VLAN_ID_BASE + i); - goto found; - } - - netdev_err(ofdpa_port->dev, "Out of internal VLAN IDs\n"); + else + netdev_err(ofdpa_port->dev, "Out of internal VLAN IDs\n"); found: found->ref_count++; -- 2.39.2
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