From: Simon Horman <horms@kernel.org>
To: "Yury Norov (NVIDIA)" <yury.norov@gmail.com>
Cc: Tony Nguyen <anthony.l.nguyen@intel.com>,
Przemek Kitszel <przemyslaw.kitszel@intel.com>,
Andrew Lunn <andrew+netdev@lunn.ch>,
"David S. Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
intel-wired-lan@lists.osuosl.org, netdev@vger.kernel.org,
linux-kernel@vger.kernel.org, "Loktionov,
Aleksandr" <aleksandr.loktionov@intel.com>
Subject: Re: [Intel-wired-lan] [PATCH v2] i40e: drop useless bitmap_weight() call in i40e_set_rxfh_fields()
Date: Mon, 5 Jan 2026 15:41:33 +0000 [thread overview]
Message-ID: <aVvbrXplVVKWQL3F@horms.kernel.org> (raw)
In-Reply-To: <20251218015758.682498-1-yury.norov@gmail.com>
On Wed, Dec 17, 2025 at 08:57:57PM -0500, Yury Norov (NVIDIA) wrote:
> bitmap_weight() is O(N) and useless here, because the following
> for_each_set_bit() returns immediately in case of empty flow_pctypes.
>
> Signed-off-by: Yury Norov (NVIDIA) <yury.norov@gmail.com>
> ---
> v1: https://lore.kernel.org/all/20251216002852.334561-1-yury.norov@gmail.com/
> v2: don't drop flow_id (Aleksandr).
Reviewed-by: Simon Horman <horms@kernel.org>
WARNING: multiple messages have this Message-ID (diff)
From: Simon Horman <horms@kernel.org>
To: "Yury Norov (NVIDIA)" <yury.norov@gmail.com>
Cc: Tony Nguyen <anthony.l.nguyen@intel.com>,
Przemek Kitszel <przemyslaw.kitszel@intel.com>,
Andrew Lunn <andrew+netdev@lunn.ch>,
"David S. Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
intel-wired-lan@lists.osuosl.org, netdev@vger.kernel.org,
linux-kernel@vger.kernel.org, "Loktionov,
Aleksandr" <aleksandr.loktionov@intel.com>
Subject: Re: [PATCH v2] i40e: drop useless bitmap_weight() call in i40e_set_rxfh_fields()
Date: Mon, 5 Jan 2026 15:41:33 +0000 [thread overview]
Message-ID: <aVvbrXplVVKWQL3F@horms.kernel.org> (raw)
In-Reply-To: <20251218015758.682498-1-yury.norov@gmail.com>
On Wed, Dec 17, 2025 at 08:57:57PM -0500, Yury Norov (NVIDIA) wrote:
> bitmap_weight() is O(N) and useless here, because the following
> for_each_set_bit() returns immediately in case of empty flow_pctypes.
>
> Signed-off-by: Yury Norov (NVIDIA) <yury.norov@gmail.com>
> ---
> v1: https://lore.kernel.org/all/20251216002852.334561-1-yury.norov@gmail.com/
> v2: don't drop flow_id (Aleksandr).
Reviewed-by: Simon Horman <horms@kernel.org>
next prev parent reply other threads:[~2026-01-05 15:41 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-12-18 1:57 [Intel-wired-lan] [PATCH v2] i40e: drop useless bitmap_weight() call in i40e_set_rxfh_fields() Yury Norov (NVIDIA)
2025-12-18 1:57 ` Yury Norov (NVIDIA)
2026-01-05 15:41 ` Simon Horman [this message]
2026-01-05 15:41 ` Simon Horman
2026-01-27 6:22 ` [Intel-wired-lan] " Rinitha, SX
2026-01-27 6:22 ` Rinitha, SX
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