From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-wm1-f48.google.com (mail-wm1-f48.google.com [209.85.128.48]) (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 712E939FD9 for ; Thu, 2 Oct 2025 07:35:09 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.128.48 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1759390511; cv=none; b=SaQLhgpUFSuyEwD4/n9Y5oopoXTaP1iE1GBi/MviyR8zaskM24pacERlzX4O267z5lRZVgTc/iys2Lmqeir6319Vi/Q7/cvuPk91kCWcfACFnPj8yxnE4/p7/J0I/otHtlx8cckw+t/iZ94QrQWt6oMhXqjb3m8lwsv75kVA/GE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1759390511; c=relaxed/simple; bh=Lvem05vgsC6rqvRaieoAhCU37f116E21leOhamD1D9U=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=sVtKtKQwSFcjh4Qkup8XBAAkYTv7LoZTmCKYJc2wRAktrSGiiW/TYjbWlDIecZMFl+1YYtmt/TSjv4oSGysf6PvtuiD7HBgHAeDfCtvaEqshsl3rJVbS5HU2lxkRIX774U8unERnfG6MBLtBODitOEKWjnkQuyWPnwxe2HF6RIw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.dev; spf=pass smtp.mailfrom=gmail.com; arc=none smtp.client-ip=209.85.128.48 Authentication-Results: smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.dev Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Received: by mail-wm1-f48.google.com with SMTP id 5b1f17b1804b1-46e37d10ed2so5796475e9.2 for ; Thu, 02 Oct 2025 00:35:09 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1759390508; x=1759995308; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=Zy0m6lGq7yazke2nafMsvPVV6PQXFaV2+DO3R5bhnME=; b=OgPbsAcdArk7WxK12AEx0a+BQUzLDjW3fSXm0TLDUMwnNNnUrFp4I4DG9TO07xErB1 l2UCfH7GAtfl0g3Zlkq2iYILeM8viTr3NGNQ4qaVprQqsdVmyvr2a9biq77jUBMtoc5R v6drIJKXjIjihuaJnCS8OZSap79PWuUBk2i97tJp8tM7HgqfMDJ7oi9khAF4SrnSphiw XH9GMNtQtxEDUAulyc5sIhZb12v9lVorfZ2k2338GKr+/trdjHRPqRkErsL8IYjz7dyu c0Rz4pINLWDmwFF17VA8GzyRMh+kp9ZKD792AFGFE/z/VufXe8DhQkF/oTZ+MHUZrP5j cXfA== X-Forwarded-Encrypted: i=1; AJvYcCXyw/jG9OJOeaGRJrYv6Zo3UZG5HKNTwIHt9NXuRz55HRJ1nEjxiccbxmoNh8DlRfC3s1D4K1grgj+LDKU=@vger.kernel.org X-Gm-Message-State: AOJu0Yxsa/EBTyvUbbbUJtVezuMAaW73ddEdgLzi77RMyMNps89dQx3o NdQLKcNgWITiDi7HbLaMK4uev7yK3EZkOHP1+dRGthKHoLcowqMs+iqQ X-Gm-Gg: ASbGncvxasYw22pGK681bL3vK5cI5jy7+pNYicGr1v1FbHxIVVXBOkGyE+3+0wb5TJa CqcpalXHUsQGpM137g0+bD0AznVNd0QWDXwcHtp+DRMvmF/FZWDCPJ4SdLfY1IATm6m3W9qBmuu MrZEK22bV3965ESzTSQS1zZ37w+ki78H4LJLVDDROdPnj85iYT1NZct9wSvWt98MlqXgJObh3mL UCJOh6b18YXRiVnWm3Ndr1Tn5BQmXPKHCWtSgbpwrwVMB1L2xhSb+LtCJekYZzA74A/D1wCmhOb q8pIhe+0xbhVk4YoLnexmejK/Gq8cjELAaU7kE0M9ifOLgKeim70LTME5u8mI+ZrUimGLurhbul evvzqphU4MsExKtiT7txaduW/YS8gQSNUf1voAoo= X-Google-Smtp-Source: AGHT+IFdXedeq8zfqN8YTO4c4rG0+WopGT+gds1vJKougcSHuF83RceLKvrR4pss1nVq5M3RimSQvA== X-Received: by 2002:a05:600c:3544:b0:46e:5aac:54f9 with SMTP id 5b1f17b1804b1-46e61293e93mr47824755e9.37.1759390507589; Thu, 02 Oct 2025 00:35:07 -0700 (PDT) Received: from localhost.localdomain ([2a09:0:1:2::301b]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-46e6a692af6sm17856135e9.21.2025.10.02.00.35.00 (version=TLS1_3 cipher=TLS_CHACHA20_POLY1305_SHA256 bits=256/256); Thu, 02 Oct 2025 00:35:07 -0700 (PDT) From: Lance Yang To: akpm@linux-foundation.org, david@redhat.com, lorenzo.stoakes@oracle.com Cc: ziy@nvidia.com, baolin.wang@linux.alibaba.com, Liam.Howlett@oracle.com, npache@redhat.com, ryan.roberts@arm.com, dev.jain@arm.com, baohua@kernel.org, ioworker0@gmail.com, richard.weiyang@gmail.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: [PATCH mm-new 0/2] mm/khugepaged: refactor and merge PTE scanning logic Date: Thu, 2 Oct 2025 15:32:53 +0800 Message-ID: <20251002073255.14867-1-lance.yang@linux.dev> X-Mailer: git-send-email 2.49.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Hi all, This series cleans up the almost-duplicated PTE scanning logic in the collapse path. The first one is a preparatory step that refactors both loops to use a single if-else-if-else-if chain for checking disjoint PTEs. The second one then extracts the common logic into a shared helper. Thanks, Lance Lance Yang (2): mm/khugepaged: optimize PTE scanning with if-else-if-else-if chain mm/khugepaged: merge PTE scanning logic into a new helper mm/khugepaged.c | 171 +++++++++++++++++++++++++++++------------------- 1 file changed, 104 insertions(+), 67 deletions(-) -- 2.49.0