From nobody Tue Dec 16 14:34:58 2025 Received: from mail-yx1-f49.google.com (mail-yx1-f49.google.com [74.125.224.49]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 1D34A2C11E1 for ; Sun, 14 Dec 2025 23:54:43 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=74.125.224.49 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1765756484; cv=none; b=OUt56njYwDTDUGNJQmg3lym35Y1M/De1NplbJT1KolNj9HcL/+ImYcqgc5NIb2NYfzXTzbLJtQWPAhOTX5wXRfgeYUoDqYIzhEaGeuHO72LSoaefAOa9F6i/0kIsr0QfbIXLVc6L3RZLOWZ/KgpBn72wdMpPsu51R6rDZMwu10c= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1765756484; c=relaxed/simple; bh=todWKbOR7N5gkgfOJpwxDdxg2ATxNMsCp3twnm07uRg=; h=From:To:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=BNE/0KNU/1va7Imug+X6clrw3j3DG+uSdzEQqwwzOy07T5KQTf5QdBdV2yZf4OTao5GXdzhdkT03x2IlYQ3QOKNDVu5DGpLySOz43oQ2UKbPTqY4K7pjC3donjNZ4o+22HWoiz0JJ9eqcFQjuhbpANpRqeTzMp8PqvP0gRxjgiY= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=apXfRp0r; arc=none smtp.client-ip=74.125.224.49 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="apXfRp0r" Received: by mail-yx1-f49.google.com with SMTP id 956f58d0204a3-6432842cafdso2623963d50.2 for ; Sun, 14 Dec 2025 15:54:43 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1765756482; x=1766361282; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:to:from:from:to:cc:subject:date:message-id :reply-to; bh=cev0oRj6wUiS0nFoJ8xzMynhHv3YKEaPiWJaJeat0/I=; b=apXfRp0rGgVK6TgBWIzCLrXOhtUilRc1ioCxoVS/TPRWy6oYHw7Wa11gKnOiOmGn/y X2GYylx7d7qzD3nXAtHalmr/cXVAPNyTd3SZ4gJcx09L6XHpf3W4kGiiNWivO7s/OzF5 fjOenKrXWolJxmPW7q9AyCwqDeTqa/wL6hWgb0XyKGdmCr2X76DAUG2GJkKyAkgxlyfk 5otq9a5O1F94bVXUHfftJnOibVsGphrWiXuXZ3KRD1yqR1iSqqfwA3M6BQ5lzfMXVoSl TNdxESjl3nhKhL2IA1FZJwqNKIFWEy5X1U0mRp5h2FzzhJ0Z2w9yswXtZNMXwP8kZAD6 acKg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1765756482; x=1766361282; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:to:from:x-gm-gg:x-gm-message-state:from:to :cc:subject:date:message-id:reply-to; bh=cev0oRj6wUiS0nFoJ8xzMynhHv3YKEaPiWJaJeat0/I=; b=aO0dinYKhnYVibEaBl96/8WmHJhQ1OO1NihLkey2V38S0R/X1uQ6UqJsR9m4yeNpBM f5ajVaWMmjg3sI3MqjUsWuMFNJxJr53d3B4P6jtCSZXUkMMpMwvJjrOuD0VbdeHB1pB/ lmBNkF1TGQveBYFjbqX1qG3y/+B2TDlGHEio0g3IDaKO3trWqw3e9OyO9K3JmV4D6CFD LVp1HUy/R2zrl4xu2pcE0+yU5vEZfjZjcl48F14qYRHAEp69z/+y8spx9FzZ03ZjN0Xf k9fFw8q5ic9/0OXKfSSV+Gok66ipkwGIPBm6IzlW0GvWG+6696cyv3Bf5KI457NgOBoE Z2eQ== X-Forwarded-Encrypted: i=1; AJvYcCWOp35DBZtQqVWBTMe/TyJDSGsCkv1oxueEiWkjuGwbk2eU4YROlVs/xR1bglRh6MVSIDYd00jntwdn1w8=@vger.kernel.org X-Gm-Message-State: AOJu0YzinGoEU0FfZCySvcOh5QvrrdTi+nzc+Y7X7/yaT2hkyMA2icjl KPpxgDvTAmN/1k22vgUS70B34udsvKESh+79Ph8hIINo+MX4u+9OS7NM X-Gm-Gg: AY/fxX6BAuJXoOl+HQa9YugJbQpTiCk6RNZ1uX7F2kuoYPtMsQRqGEgsoY6DU/bwEtx 4abElkhryV0OaSPb9awdqMgsF8dglJmbojc1wLj21K7cp8Mw5AMBrRvWTecGyA3O2/Q1w3//cME 8THJqGQODtgzIZqsgSVsgrCMa8xv66/J+1P+BTiBTuHMZ1kpQe0/5ZeRxf6wN8Lpf+AJu1YNUpb uQNi6h9yMc0hudF2sFq7ILDw+VcK5Km0PfdK8iKRj60cskdi7b8KeBA+Y2UIXV8apJ0zs8JBQ5l Q4z8lFvkva1JfJCLdpvgvcEB3RQkrSY8lHXbPCwnLxCCdJVekgTo+wayFQxhEsObTH2glbTSkOA btOinD+lseASNyG5LtgaopEW2PD3WZrO5fPKPpNgRfOnvLNrJKLOYM7ggVzxIDCjKf3QtR6Bke9 hE39e1KrA= X-Google-Smtp-Source: AGHT+IHOwOhzF1Cxte+xsv8znV1uRxQYp3ADxrPCFMHa4D3hoXVO+mGZMOSQbxROajW+HDGwM06zKQ== X-Received: by 2002:a05:690e:1482:b0:645:68e5:11df with SMTP id 956f58d0204a3-64568e5137emr1781442d50.12.1765756482216; Sun, 14 Dec 2025 15:54:42 -0800 (PST) Received: from localhost ([2601:346:0:79bd:3037:17e6:9976:d6ea]) by smtp.gmail.com with ESMTPSA id 00721157ae682-78e749e55edsm22187097b3.33.2025.12.14.15.54.41 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 14 Dec 2025 15:54:42 -0800 (PST) From: "Yury Norov (NVIDIA)" To: Ingo Molnar , Thomas Gleixner , Borislav Petkov , Dave Hansen , x86@kernel.org, "H. Peter Anvin" , Yury Norov , Rasmus Villemoes , Andrew Morton , "Peter Zijlstra (Intel)" , =?UTF-8?q?Ilpo=20J=C3=A4rvinen?= , Tony Luck , "Xin Li (Intel)" , "Chang S. Bae" , linux-kernel@vger.kernel.org Subject: [PATCH 2/2] x86/topology: use bitmap_weight_from() Date: Sun, 14 Dec 2025 18:54:36 -0500 Message-ID: <20251214235437.244125-3-yury.norov@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20251214235437.244125-1-yury.norov@gmail.com> References: <20251214235437.244125-1-yury.norov@gmail.com> 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 Content-Type: text/plain; charset="utf-8" Switch topo_unit_count() to use bitmap_weight_from(). Signed-off-by: Yury Norov (NVIDIA) --- arch/x86/kernel/cpu/topology.c | 8 ++------ 1 file changed, 2 insertions(+), 6 deletions(-) diff --git a/arch/x86/kernel/cpu/topology.c b/arch/x86/kernel/cpu/topology.c index f55ea3cdbf88..ba7142f417ad 100644 --- a/arch/x86/kernel/cpu/topology.c +++ b/arch/x86/kernel/cpu/topology.c @@ -204,15 +204,11 @@ static __init bool check_for_real_bsp(u32 apic_id) static unsigned int topo_unit_count(u32 lvlid, enum x86_topology_domains a= t_level, unsigned long *map) { - unsigned int id, end, cnt =3D 0; + unsigned int end; =20 /* Calculate the exclusive end */ end =3D lvlid + (1U << x86_topo_system.dom_shifts[at_level]); - - /* Unfortunately there is no bitmap_weight_range() */ - for (id =3D find_next_bit(map, end, lvlid); id < end; id =3D find_next_bi= t(map, end, ++id)) - cnt++; - return cnt; + return bitmap_weight_from(map, lvlid, end); } =20 static __init void topo_register_apic(u32 apic_id, u32 acpi_id, bool prese= nt) --=20 2.43.0