From nobody Sat Oct 4 12:45:44 2025 Received: from out-186.mta1.migadu.com (out-186.mta1.migadu.com [95.215.58.186]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 69425306D54 for ; Fri, 15 Aug 2025 15:41:40 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=95.215.58.186 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755272503; cv=none; b=VUKtmoy4S70Kjt6I/iwOmChmvf5HQ8RA73a/2+T6seUZMW7DXDDqkVq0QWegMb4po2ujoMpzYRQ8smW3rwPfpdAcvKImPsg6x5N1PUvL5H3riLn2jHJu6+FCfMJKNre8yWCS3O84IsgvwJ+pg32ifA1b+OyR4A/bDMPSxxZtXpk= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755272503; c=relaxed/simple; bh=kWIeKW/3+LZqeCGlBxC1tJztJxOj/OGJgM+qI//Vx9I=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=hUJHKaVasrg/hh++YWdWzUVLbRjEVYvcnsbso1WQZCGzmTMlajU1+NuztjTQtCAoY2t33JDXRlUtaM2rp0friI20Tl6vIqbW1Y8sjnO93VLd43WDT0F/h1WdVA8gNgXJIFFB4VQPHI70O4QStCLwduE7ILxg4jfR4VdM1tJ4TlE= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev; spf=pass smtp.mailfrom=linux.dev; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b=uIPcYaWT; arc=none smtp.client-ip=95.215.58.186 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.dev Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b="uIPcYaWT" X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1755272498; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding; bh=XoTQC/MqUTM2TQEXO9Dy4N6Bkcqbv/50Gl4TO7GZo+k=; b=uIPcYaWTHp3Ue8B4JNxoYifSJQXbTMFYo9VBbbhuUTSstk5ZvuJdzCAtUuFfOurlsrUn3c +K51SfEV+p6egayGXTyYZc6XuCNDDCg7z2eA4M3TrXfYExajEDUOl/nPNByW2irNW20+Ks +xwwM/CUWKRjRbiQ5cAqOTW74MUjhDc= From: Thorsten Blum To: "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Simon Horman , Peter Seiderer , =?UTF-8?q?Toke=20H=C3=B8iland-J=C3=B8rgensen?= Cc: Thorsten Blum , netdev@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH net-next v2] net: pktgen: Use min()/min_t() to improve pktgen_finalize_skb() Date: Fri, 15 Aug 2025 17:33:33 +0200 Message-ID: <20250815153334.295431-3-thorsten.blum@linux.dev> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Migadu-Flow: FLOW_OUT Content-Type: text/plain; charset="utf-8" Use min() and min_t() to improve pktgen_finalize_skb() and avoid calculating 'datalen / frags' twice. Signed-off-by: Thorsten Blum --- Changes in v2: - Use min_t(int,,) to prevent a signedness error - Link to v1: https://lore.kernel.org/lkml/20250814172242.231633-2-thorsten= .blum@linux.dev/ --- net/core/pktgen.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) diff --git a/net/core/pktgen.c b/net/core/pktgen.c index 0ebe5461d4d9..d41b03fd1f63 100644 --- a/net/core/pktgen.c +++ b/net/core/pktgen.c @@ -114,6 +114,7 @@ =20 #include #include +#include #include #include #include @@ -2841,8 +2842,7 @@ static void pktgen_finalize_skb(struct pktgen_dev *pk= t_dev, struct sk_buff *skb, } =20 i =3D 0; - frag_len =3D (datalen/frags) < PAGE_SIZE ? - (datalen/frags) : PAGE_SIZE; + frag_len =3D min_t(int, datalen / frags, PAGE_SIZE); while (datalen > 0) { if (unlikely(!pkt_dev->page)) { int node =3D numa_node_id(); @@ -2859,8 +2859,7 @@ static void pktgen_finalize_skb(struct pktgen_dev *pk= t_dev, struct sk_buff *skb, if (i =3D=3D (frags - 1)) skb_frag_fill_page_desc(&skb_shinfo(skb)->frags[i], pkt_dev->page, 0, - (datalen < PAGE_SIZE ? - datalen : PAGE_SIZE)); + min(datalen, PAGE_SIZE)); else skb_frag_fill_page_desc(&skb_shinfo(skb)->frags[i], pkt_dev->page, 0, frag_len); --=20 2.50.1