From patchwork Mon Aug 7 11:09:08 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Qi Zheng X-Patchwork-Id: 13343548 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 E75BDC001DF for ; Mon, 7 Aug 2023 11:17:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232119AbjHGLRC (ORCPT ); Mon, 7 Aug 2023 07:17:02 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53998 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232245AbjHGLQm (ORCPT ); Mon, 7 Aug 2023 07:16:42 -0400 Received: from mail-pf1-x429.google.com (mail-pf1-x429.google.com [IPv6:2607:f8b0:4864:20::429]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E67931984 for ; Mon, 7 Aug 2023 04:15:21 -0700 (PDT) Received: by mail-pf1-x429.google.com with SMTP id d2e1a72fcca58-6878db91494so757979b3a.0 for ; Mon, 07 Aug 2023 04:15:21 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bytedance.com; s=google; t=1691406854; x=1692011654; 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=UfFRGPeE2ZLo8C9JFiR7wWvNCzDdrS4O9P7I0rwozQE=; b=ONEUI0IfFZms4FG9PetOl8bvKenOqN1nU77N5Qte1+jcUcBw58bz7f+hU+R7TeYF+V lh6zqoEeFSpZcpg8mRig+kmjWUt6kfXbSu+9NeAXYfo3N+VsjNhMLOsuKkNQEOPAjcDK uUyV00OaSrfiIXIqqcl52eWZs37Xm/4rryCSVvHnIArrw8ERrhcN4eSxoW+GqcL8/yIb KwF9HiN5U8S+9tgj6CAiBWcQ9gvQLYdhSLPDQ8D4Yya1PGPZvz8SVg49P9ivLovoYGLT Rib8AROfQ3COlCK0yM55x9RlvasI2HVvqoY8nt3eQf4jmVmec6kkSrsQ1MGHdEx91QwE bHJA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1691406854; x=1692011654; 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=UfFRGPeE2ZLo8C9JFiR7wWvNCzDdrS4O9P7I0rwozQE=; b=BD+u7PYMaPUSVWTMMDdUaQQVnBftV0dj3O20CBzI08/e/iFD3q5Tq+9Nkgrf4SZR03 NtnZ3mvgzE6YC5t7hJlS3XRdqgUL8cU0gHwGC6+6EUrfsqwb0UOG0gyCjn2yjWe1Jy5e NWGrT573LzmIhIza4NHdIQm/mODiU/KXdYR7EoRqbHv9xBrckNn0mS5HPvK30SrdJoKo +SXqPl2PZUN1BhMqAh7+1X6YNzLbe4Pw3vL5GNN7g3pODv+JqJASGWyjTWtHmdDMHSRn AIltOJkaza85yq2J8GcgDZJc86DdAHlpaVB44LSEgDrLO+Zbbfzm7UQ7h0SeMW8OaSzY W9ew== X-Gm-Message-State: ABy/qLaHV/5tF/VxnIj39OVgU7M2fm8UkIfSsk8NmtlZ/t2nvG5iB71P M9/C60A1Tj1gj2GUMT8A1j4Uxw== X-Google-Smtp-Source: APBJJlFKEuLPG6rXvjHQ/xhYlF3mJA1G+qTCCufEjWmHi053bG2lxjJC7FtDeUsrnl72QxE+YEuj1g== X-Received: by 2002:a17:902:d503:b0:1bb:83ec:832 with SMTP id b3-20020a170902d50300b001bb83ec0832mr32625772plg.2.1691406854020; Mon, 07 Aug 2023 04:14:14 -0700 (PDT) Received: from C02DW0BEMD6R.bytedance.net ([203.208.167.146]) by smtp.gmail.com with ESMTPSA id y13-20020a17090aca8d00b0025be7b69d73sm5861191pjt.12.2023.08.07.04.14.01 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 07 Aug 2023 04:14:13 -0700 (PDT) From: Qi Zheng To: akpm@linux-foundation.org, david@fromorbit.com, tkhai@ya.ru, vbabka@suse.cz, roman.gushchin@linux.dev, djwong@kernel.org, brauner@kernel.org, paulmck@kernel.org, tytso@mit.edu, steven.price@arm.com, cel@kernel.org, senozhatsky@chromium.org, yujie.liu@intel.com, gregkh@linuxfoundation.org, muchun.song@linux.dev, simon.horman@corigine.com, dlemoal@kernel.org Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org, x86@kernel.org, kvm@vger.kernel.org, xen-devel@lists.xenproject.org, linux-erofs@lists.ozlabs.org, linux-f2fs-devel@lists.sourceforge.net, cluster-devel@redhat.com, linux-nfs@vger.kernel.org, linux-mtd@lists.infradead.org, rcu@vger.kernel.org, netdev@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-arm-msm@vger.kernel.org, dm-devel@redhat.com, linux-raid@vger.kernel.org, linux-bcache@vger.kernel.org, virtualization@lists.linux-foundation.org, linux-fsdevel@vger.kernel.org, linux-ext4@vger.kernel.org, linux-xfs@vger.kernel.org, linux-btrfs@vger.kernel.org, Qi Zheng Subject: [PATCH v4 20/48] mm: thp: dynamically allocate the thp-related shrinkers Date: Mon, 7 Aug 2023 19:09:08 +0800 Message-Id: <20230807110936.21819-21-zhengqi.arch@bytedance.com> X-Mailer: git-send-email 2.24.3 (Apple Git-128) In-Reply-To: <20230807110936.21819-1-zhengqi.arch@bytedance.com> References: <20230807110936.21819-1-zhengqi.arch@bytedance.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org Use new APIs to dynamically allocate the thp-zero and thp-deferred_split shrinkers. Signed-off-by: Qi Zheng --- mm/huge_memory.c | 69 +++++++++++++++++++++++++++++++----------------- 1 file changed, 45 insertions(+), 24 deletions(-) diff --git a/mm/huge_memory.c b/mm/huge_memory.c index 947001a7cd42..5d0c7a0b651c 100644 --- a/mm/huge_memory.c +++ b/mm/huge_memory.c @@ -65,7 +65,11 @@ unsigned long transparent_hugepage_flags __read_mostly = (1<count_objects = shrink_huge_zero_page_count; + huge_zero_page_shrinker->scan_objects = shrink_huge_zero_page_scan; + huge_zero_page_shrinker->seeks = DEFAULT_SEEKS; + shrinker_register(huge_zero_page_shrinker); + + deferred_split_shrinker->count_objects = deferred_split_count; + deferred_split_shrinker->scan_objects = deferred_split_scan; + deferred_split_shrinker->seeks = DEFAULT_SEEKS; + shrinker_register(deferred_split_shrinker); + + return 0; +} + +static void __init thp_shrinker_exit(void) +{ + shrinker_free(huge_zero_page_shrinker); + shrinker_free(deferred_split_shrinker); +} + static int __init hugepage_init(void) { int err; @@ -482,12 +516,9 @@ static int __init hugepage_init(void) if (err) goto err_slab; - err = register_shrinker(&huge_zero_page_shrinker, "thp-zero"); - if (err) - goto err_hzp_shrinker; - err = register_shrinker(&deferred_split_shrinker, "thp-deferred_split"); + err = thp_shrinker_init(); if (err) - goto err_split_shrinker; + goto err_shrinker; /* * By default disable transparent hugepages on smaller systems, @@ -505,10 +536,8 @@ static int __init hugepage_init(void) return 0; err_khugepaged: - unregister_shrinker(&deferred_split_shrinker); -err_split_shrinker: - unregister_shrinker(&huge_zero_page_shrinker); -err_hzp_shrinker: + thp_shrinker_exit(); +err_shrinker: khugepaged_destroy(); err_slab: hugepage_exit_sysfs(hugepage_kobj); @@ -2834,7 +2863,7 @@ void deferred_split_folio(struct folio *folio) #ifdef CONFIG_MEMCG if (memcg) set_shrinker_bit(memcg, folio_nid(folio), - deferred_split_shrinker.id); + deferred_split_shrinker->id); #endif } spin_unlock_irqrestore(&ds_queue->split_queue_lock, flags); @@ -2908,14 +2937,6 @@ static unsigned long deferred_split_scan(struct shrinker *shrink, return split; } -static struct shrinker deferred_split_shrinker = { - .count_objects = deferred_split_count, - .scan_objects = deferred_split_scan, - .seeks = DEFAULT_SEEKS, - .flags = SHRINKER_NUMA_AWARE | SHRINKER_MEMCG_AWARE | - SHRINKER_NONSLAB, -}; - #ifdef CONFIG_DEBUG_FS static void split_huge_pages_all(void) {