From patchwork Mon Jul 24 09:43:12 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Qi Zheng X-Patchwork-Id: 13323710 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 037E6C04A94 for ; Mon, 24 Jul 2023 09:47:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232383AbjGXJr1 (ORCPT ); Mon, 24 Jul 2023 05:47:27 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45932 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231403AbjGXJrE (ORCPT ); Mon, 24 Jul 2023 05:47:04 -0400 Received: from mail-pl1-x635.google.com (mail-pl1-x635.google.com [IPv6:2607:f8b0:4864:20::635]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 36EE0E57 for ; Mon, 24 Jul 2023 02:46:07 -0700 (PDT) Received: by mail-pl1-x635.google.com with SMTP id d9443c01a7336-1b867f9198dso8893925ad.0 for ; Mon, 24 Jul 2023 02:46:07 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bytedance.com; s=google; t=1690191966; x=1690796766; 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=vu9DfqGDIkVtY7CS+mn/8y6VlhAfp+/Q2ofuaCWar5Q=; b=At3xco+o52slbk+Wt2XjpJ6Cu9i6sYrBgnCMc/5CS86ucLHJsGEmN+KJGEE3nRi6sH tP3qBPXEcwpvnQz66wRWSap6a1c2U02VEHsWoEgBKOJ+J1jRKgicNVIHL7YJb/2E7nTO mH8QuWqeK2DOxQytNGG5waBMmbk4L4jbPvrdsdxuK9v3y/Gywd5CYYO64IbHl7UYCZKj 8Q8aIDwesLUsAzLtg/KQ6AQafF3z6VJJ9ci5NRM3KksRfjknsFWZGEpbW519fA18aLaX x2A/u6CY/jHlR9bkZrq6ZtCOein2LXegx+J7Hclhb+m/DWqNAehg6T+OKXqpv2vIgzAt zKew== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1690191966; x=1690796766; 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=vu9DfqGDIkVtY7CS+mn/8y6VlhAfp+/Q2ofuaCWar5Q=; b=b12l40ikLePXNFT9nx85Fe5jip3XHXe5zw+Kh0f2DKQTMVIRMEwX2AaAs6k7IIZbyl 51mOOdkk+hGV6w2rdJAxz7yj+eF9Lv0qQ1V6BBvt7/3MRysGMfgaCyq0lcuQ+m6Z2A5j YD+p528uTgau6r6r0Poj3FG8ZWw3vfx7jAbLvOgKfvlWipogVjs/1lZaQyi0Mue0+Ede ca4HnZE3DLqhbaC7tof+OqiREUnD5+BGxJz+H90PO4r7p5ceN1mDSTgZzMoSU3bxR2Fx aXDHOFBFnFhmTIHbpJQuK1Am5CIr/ZDNHUcfz/hZgsxzTRfmGGi49UwoTItkWYF5GQek oqLA== X-Gm-Message-State: ABy/qLbhSzWV12fdIe2SUyB1fBqa2Fb2yLLozX6lTcbcnfg4tVVNQ02i ZFyShiaeI+2x/ErEyTYs52xbew== X-Google-Smtp-Source: APBJJlGrsdFKJ71ukJT79kDa1W+M4ztJszdSUa3mf2ArYfnWEb5YwD/wtpSbLXe4wEi7ibAUftTBwg== X-Received: by 2002:a17:902:ecd2:b0:1b8:b4f6:1327 with SMTP id a18-20020a170902ecd200b001b8b4f61327mr12288935plh.6.1690191966684; Mon, 24 Jul 2023 02:46:06 -0700 (PDT) Received: from C02DW0BEMD6R.bytedance.net ([203.208.167.147]) by smtp.gmail.com with ESMTPSA id d5-20020a170902c18500b001bb20380bf2sm8467233pld.13.2023.07.24.02.45.55 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 24 Jul 2023 02:46:06 -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 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 v2 05/47] binder: dynamically allocate the android-binder shrinker Date: Mon, 24 Jul 2023 17:43:12 +0800 Message-Id: <20230724094354.90817-6-zhengqi.arch@bytedance.com> X-Mailer: git-send-email 2.24.3 (Apple Git-128) In-Reply-To: <20230724094354.90817-1-zhengqi.arch@bytedance.com> References: <20230724094354.90817-1-zhengqi.arch@bytedance.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: rcu@vger.kernel.org Use new APIs to dynamically allocate the android-binder shrinker. Signed-off-by: Qi Zheng --- drivers/android/binder_alloc.c | 31 +++++++++++++++++++------------ 1 file changed, 19 insertions(+), 12 deletions(-) diff --git a/drivers/android/binder_alloc.c b/drivers/android/binder_alloc.c index e3db8297095a..019981d65e1e 100644 --- a/drivers/android/binder_alloc.c +++ b/drivers/android/binder_alloc.c @@ -1053,11 +1053,7 @@ binder_shrink_scan(struct shrinker *shrink, struct shrink_control *sc) NULL, sc->nr_to_scan); } -static struct shrinker binder_shrinker = { - .count_objects = binder_shrink_count, - .scan_objects = binder_shrink_scan, - .seeks = DEFAULT_SEEKS, -}; +static struct shrinker *binder_shrinker; /** * binder_alloc_init() - called by binder_open() for per-proc initialization @@ -1077,19 +1073,30 @@ void binder_alloc_init(struct binder_alloc *alloc) int binder_alloc_shrinker_init(void) { - int ret = list_lru_init(&binder_alloc_lru); + int ret; - if (ret == 0) { - ret = register_shrinker(&binder_shrinker, "android-binder"); - if (ret) - list_lru_destroy(&binder_alloc_lru); + ret = list_lru_init(&binder_alloc_lru); + if (ret) + return ret; + + binder_shrinker = shrinker_alloc(0, "android-binder"); + if (!binder_shrinker) { + list_lru_destroy(&binder_alloc_lru); + return -ENOMEM; } - return ret; + + binder_shrinker->count_objects = binder_shrink_count; + binder_shrinker->scan_objects = binder_shrink_scan; + binder_shrinker->seeks = DEFAULT_SEEKS; + + shrinker_register(binder_shrinker); + + return 0; } void binder_alloc_shrinker_exit(void) { - unregister_shrinker(&binder_shrinker); + shrinker_unregister(binder_shrinker); list_lru_destroy(&binder_alloc_lru); }