From patchwork Mon Nov 6 18:31:57 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nhat Pham X-Patchwork-Id: 13447290 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id C7C81C4332F for ; Mon, 6 Nov 2023 18:32:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232646AbjKFScR (ORCPT ); Mon, 6 Nov 2023 13:32:17 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35396 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232371AbjKFScH (ORCPT ); Mon, 6 Nov 2023 13:32:07 -0500 Received: from mail-pf1-x42e.google.com (mail-pf1-x42e.google.com [IPv6:2607:f8b0:4864:20::42e]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 44AABD49; Mon, 6 Nov 2023 10:32:05 -0800 (PST) Received: by mail-pf1-x42e.google.com with SMTP id d2e1a72fcca58-6c3077984e8so4053981b3a.0; Mon, 06 Nov 2023 10:32:05 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1699295525; x=1699900325; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=CKTpKLeSBdUqUozne8dOLG7XHxiGHFR4EgqMwDuCKlY=; b=DQEAu/8T6Zlvmk8QXgJb+oVwN1lFWiAgQOtG7oTLgE1ZxOtDfHeodJk9Cn4bjZGGk6 y7ThCkWVBjkbDUHInA/cNizKDmk3bFaEtOqsu59AlgQoMeIlimbwtr5unijvmHuct2Vm a7FNUxcWLeYX+QZAfVpWCNxBV6YZwCw601B7Ju4iT854fJuRKaaysVOxBDBPhktKZw2D K9JbGPzPZteaccjDLGvkx2556K20tfRVetEiRRFUj2QQrORyk8tWEVapQY+bsmfiUtEm BsaS254XNN6zZDg9kuEHBiCXeBCGAVW+wBV3KEBHwWCVukc9tTf0svfADm9znEPzl6sH bRaA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1699295525; x=1699900325; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=CKTpKLeSBdUqUozne8dOLG7XHxiGHFR4EgqMwDuCKlY=; b=UbHiq0lBH/wSkMsiVzQWE5BQRgckF/oVh12lpFWAV5nAErJKQSaHCxZxhm9YRXDqRq PztjEzjmIDeUF18gHK0HQZeJ7VpgKpYcBNw7Gd7zVkJVMPCyTG7CLfNUc5mx1tiJGujk m+s3SuoSy2EFtaB4LLFnRl/mYQuuHCD9XskjPyeUYhMrcVSKz/TjyJS/VKfKND+cV0am kQGpf8nJmyH0yd3r+rD6KLQ725bzJUeqGh8jPG26gCDvrg3nT/bHeMru7cmUWL8UwG8J tAejssRgyhoAr2wFgFIB7EXoAvX5ogDzT4jivpUHuB0la+1BbDzLNxqC51ONZTYEd6nT qEeQ== X-Gm-Message-State: AOJu0YyRkQEH1r4GLPa5uMMDNhLoK/jBBg7cZyYYd5yfpqb951iSdK8A wC2aZFOABemMiOT9MNWzut4= X-Google-Smtp-Source: AGHT+IEajdjXne5TgvRI7wLvY5VaXI1+x16n9o7YmP2T+LGhqO+wFg1B1TlhqVvjHYOcgf56WSD/SA== X-Received: by 2002:a05:6a20:914e:b0:172:83b8:67f8 with SMTP id x14-20020a056a20914e00b0017283b867f8mr26904604pzc.29.1699295524682; Mon, 06 Nov 2023 10:32:04 -0800 (PST) Received: from localhost (fwdproxy-prn-119.fbsv.net. [2a03:2880:ff:77::face:b00c]) by smtp.gmail.com with ESMTPSA id j8-20020a170903024800b001c9d968563csm6161658plh.79.2023.11.06.10.32.03 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 06 Nov 2023 10:32:04 -0800 (PST) From: Nhat Pham To: akpm@linux-foundation.org Cc: hannes@cmpxchg.org, cerasuolodomenico@gmail.com, yosryahmed@google.com, sjenning@redhat.com, ddstreet@ieee.org, vitaly.wool@konsulko.com, mhocko@kernel.org, roman.gushchin@linux.dev, shakeelb@google.com, muchun.song@linux.dev, chrisl@kernel.org, linux-mm@kvack.org, kernel-team@meta.com, linux-kernel@vger.kernel.org, cgroups@vger.kernel.org, linux-doc@vger.kernel.org, linux-kselftest@vger.kernel.org, shuah@kernel.org Subject: [PATCH v5 4/6] mm: memcg: add per-memcg zswap writeback stat Date: Mon, 6 Nov 2023 10:31:57 -0800 Message-Id: <20231106183159.3562879-5-nphamcs@gmail.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20231106183159.3562879-1-nphamcs@gmail.com> References: <20231106183159.3562879-1-nphamcs@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@vger.kernel.org From: Domenico Cerasuolo Since zswap now writes back pages from memcg-specific LRUs, we now need a new stat to show writebacks count for each memcg. Suggested-by: Nhat Pham Signed-off-by: Domenico Cerasuolo Signed-off-by: Nhat Pham --- include/linux/vm_event_item.h | 1 + mm/memcontrol.c | 1 + mm/vmstat.c | 1 + mm/zswap.c | 3 +++ 4 files changed, 6 insertions(+) diff --git a/include/linux/vm_event_item.h b/include/linux/vm_event_item.h index 8abfa1240040..3153359c3841 100644 --- a/include/linux/vm_event_item.h +++ b/include/linux/vm_event_item.h @@ -145,6 +145,7 @@ enum vm_event_item { PGPGIN, PGPGOUT, PSWPIN, PSWPOUT, #ifdef CONFIG_ZSWAP ZSWPIN, ZSWPOUT, + ZSWP_WB, #endif #ifdef CONFIG_X86 DIRECT_MAP_LEVEL2_SPLIT, diff --git a/mm/memcontrol.c b/mm/memcontrol.c index 2ef49b471a16..e43b5aba8efc 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -593,6 +593,7 @@ static const unsigned int memcg_vm_event_stat[] = { #if defined(CONFIG_MEMCG_KMEM) && defined(CONFIG_ZSWAP) ZSWPIN, ZSWPOUT, + ZSWP_WB, #endif #ifdef CONFIG_TRANSPARENT_HUGEPAGE THP_FAULT_ALLOC, diff --git a/mm/vmstat.c b/mm/vmstat.c index 359460deb377..5e5572f3b456 100644 --- a/mm/vmstat.c +++ b/mm/vmstat.c @@ -1401,6 +1401,7 @@ const char * const vmstat_text[] = { #ifdef CONFIG_ZSWAP "zswpin", "zswpout", + "zswp_wb", #endif #ifdef CONFIG_X86 "direct_map_level2_splits", diff --git a/mm/zswap.c b/mm/zswap.c index 2654b0d214cc..03ee41a8b884 100644 --- a/mm/zswap.c +++ b/mm/zswap.c @@ -755,6 +755,9 @@ static enum lru_status shrink_memcg_cb(struct list_head *item, struct list_lru_o } zswap_written_back_pages++; + if (entry->objcg) + count_objcg_event(entry->objcg, ZSWP_WB); + /* * Writeback started successfully, the page now belongs to the * swapcache. Drop the entry from zswap - unless invalidate already