From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pg1-f172.google.com (mail-pg1-f172.google.com [209.85.215.172]) (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 011F62309AC; Fri, 22 Nov 2024 02:25:13 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.215.172 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1732242315; cv=none; b=nulxX4xaLYtZRRWWZ4534jlEUXWQYJv0YECNoW2Q82K5tMAwodYizKNYhHM53MlOaALmS7Zp+sgwSwZOZ29eKJk0QfUn54VC+7bLzX3RvCKJFn3pRwaGXoj6qgr+FlBxavJU3q3yHUG63lQMDgwt7BLP0C/L1t8GNEwEfOreH3U= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1732242315; c=relaxed/simple; bh=pKM4mlHB4z2bF0hncW5P/3Qmuyp7hCGw/atY1GdAfrU=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=obBR8Pa87Yug4hVJwSH6gJQXGUafHsK7+KaCNYO+P3NWMFxP+FuoBGIlDn6dScTHlti+KsctsAGbtrFWpP9ur7BB83Qh+wp5clqJJ6bWrBlBS1TfikPADoseTi8jnhUsCNK8C2EUyfYh3dQZdOu5xQDX3JKgDx7LBATsW5eXYDo= 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=RRoxEP6U; arc=none smtp.client-ip=209.85.215.172 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="RRoxEP6U" Received: by mail-pg1-f172.google.com with SMTP id 41be03b00d2f7-7fbce800ee5so229707a12.2; Thu, 21 Nov 2024 18:25:13 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1732242313; x=1732847113; darn=vger.kernel.org; h=content-transfer-encoding:in-reply-to:from:content-language :references:cc:to:subject:user-agent:mime-version:date:message-id :from:to:cc:subject:date:message-id:reply-to; bh=6gc2soC/8z+9mXZZwtqt5EFFOwjjp39gwmVDTOM8H2o=; b=RRoxEP6URNI0Yfy96bwIiJXsKM12SQOzj5mfdnwhod7p0xf3oXiAl7Qvbh78NTc/UU rgk+lpsXi1ozGDzox0fs0Iykj5eLruoKscYYHiN/qskI/FVFhipbvSMDAk8JZ7Y4ND40 tCUkt9r1xU5HLvzmGYi+CTByMYCVVxPs0UlQM1fk/8+EbM2dAgSzFdKlYRuoBXGZsTXm DoOor57lePAlBaRN6aAAPlwRaCSQ4brMPwlH3OwbO7vHJE1sZCSFtU3+D1G6HqoUY1xe /Sc0zXe/9CTDT1qzOzb0Xwk53RQTs26L2dMJIopwGZ2Umm9qNkQFKyZAlFEfM1stW46n ZW8Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1732242313; x=1732847113; h=content-transfer-encoding:in-reply-to:from:content-language :references:cc:to:subject:user-agent:mime-version:date:message-id :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=6gc2soC/8z+9mXZZwtqt5EFFOwjjp39gwmVDTOM8H2o=; b=ANIdfU7KrGZ1fH2DejWR4OfgDQpUNF4M+f2k80iNyMzZZye9wLa/NzWnQGHDzW9Bnu bO53WzL/AgE355TfVw3GI7Xokvxtp2UwvsnH16vfkHVhobxknUNQb3eyrVZacetHGr8Q hoxz7ReNFpA3zn2JH6HkA65u+kCc9KETQ/Sz4MjMbCNkRtjxuQ3AcSxbCQuaxyur4YKF UYNXk4wje/f54Z/poC5WeLHHUjtmIFr9bI7Miykjqjq5fEsrvI1S3iNGOGL0orfBCnz+ F9xCX/L1HjcaZT+/0RF3EeVDYzgeB54VDSCt94jnL7hbAD2+uWeDV5MjL76zQCDKQb/n R5uA== X-Forwarded-Encrypted: i=1; AJvYcCVjEkN3DXkoRZVEztxfjB9GFFFtFk3KqvIT0WoRV+dTfl0PWCc2hguUihRf66Wd1Fdd9+7yoBavzQONy2U5@vger.kernel.org, AJvYcCWf9kM5aBF4fRH88MVvakdipx7DeEl+sZUskAwm+Nt5Z4TS7CACoSSVYOAFMvopqROdAqNZnliOarQ=@vger.kernel.org X-Gm-Message-State: AOJu0YweF+6RzaHpRF9uuHPCMda/AgojCcsPzjHkwPQ5cxlRa3j6K8IP 0nx7ty26lLRpGWWl1KRzjy/GLYeSyVL5UG85U2WnIgvh/EYcKHmv X-Gm-Gg: ASbGncsMwd1OjBMTRu4kvXV828SAPBNFFuBG0WJqn10OHbLzsKCioVb9sJceEYC697t +qmiHOccF0WB1SDA9HIUEmW3qcXoDsnbTo3lN1mKROpkS+Oj8boIhcqqx1j5YrwmG3R9lHMeqS2 xKCOsa7fpFpiCfBphPdMZbNicdUKiWFTol8Mfs8pj1nx/YJdm1/moXXPnAygB/LD9ex0pSHRTS1 K9R4OLaxy7EiDJTIwBplSRl68Ny7V3zlck1SJJv4K5viozemYFS8SLL4g== X-Google-Smtp-Source: AGHT+IEeXMF/evqCLvxPyuGGHVMX+yhco3bGpUNgP66IZpJkIcoAuPifLVFv0cOeNBYwoDbII7iLqg== X-Received: by 2002:a05:6a20:244b:b0:1db:eeb3:d06d with SMTP id adf61e73a8af0-1e09e4576admr1697224637.21.1732242313231; Thu, 21 Nov 2024 18:25:13 -0800 (PST) Received: from [10.192.35.46] ([43.224.245.227]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-724de5763edsm483712b3a.187.2024.11.21.18.25.09 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 21 Nov 2024 18:25:12 -0800 (PST) Message-ID: <2c641b7a-4114-4cc1-b87b-052e973b33bb@gmail.com> Date: Fri, 22 Nov 2024 10:25:07 +0800 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] mm: add per-order mTHP swap-in fallback counters To: Barry Song <21cnbao@gmail.com> Cc: Jonathan Corbet , Andrew Morton , David Hildenbrand , Ryan Roberts , Baolin Wang , Usama Arif , Lance Yang , Matthew Wilcox , Peter Xu , linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org References: <20241121162735.9558-1-haowenchao22@gmail.com> Content-Language: en-US From: Wenchao Hao In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit On 2024/11/22 06:32, Barry Song wrote: > On Fri, Nov 22, 2024 at 5:28 AM Wenchao Hao wrote: >> >> Now large folio swap-in is supported, but we do not have a method >> to analyze the success ratio of large folio swap-ins. Similar to >> anon_fault_fallback, we add a per-order mTHP swpin_fallback to help >> calculate the success ratio. The new counter is located at: >> >> /sys/kernel/mm/transparent_hugepage/hugepages-/stats/swpin_fallback > > Well, this could be useful for profiling, but why not also add > MTHP_STAT_SWPIN_FALLBACK_CHARGE ? > Hi, since my current testing scenario does not involve MTHP_STAT_SWPIN_FALLBACK_CHARGE, I will soon resend a V2 version to add it. Thanks.