From patchwork Thu Jul 27 08:04:20 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Qi Zheng X-Patchwork-Id: 13329343 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 AF184C05051 for ; Thu, 27 Jul 2023 08:14:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233590AbjG0IOS (ORCPT ); Thu, 27 Jul 2023 04:14:18 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50120 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234245AbjG0INk (ORCPT ); Thu, 27 Jul 2023 04:13:40 -0400 Received: from mail-qk1-x72f.google.com (mail-qk1-x72f.google.com [IPv6:2607:f8b0:4864:20::72f]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7680244B7 for ; Thu, 27 Jul 2023 01:08:33 -0700 (PDT) Received: by mail-qk1-x72f.google.com with SMTP id af79cd13be357-767c5371ea3so11220985a.0 for ; Thu, 27 Jul 2023 01:08:33 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bytedance.com; s=google; t=1690445255; x=1691050055; 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=YQ2nJ797AaeiRC4tEbuFSwr/qroaEGD64TBkJX9gwcc=; b=hA1tLAWfG9E5lMYpiq31/rYnltLY2UCcKbUgiSnCT1E8X8kGoiYDuivuIXgGbNns6i rsO7OAKzrpoY/t3vXOZgk1fvXy/+glUW8j30sofzfP0QuNA4YNuHX0B3/wn/NlRfmmSp hK0N8lK0Vwhq0nUugZ8ycZKnaI5f1t5XqZDHcuhBMCyVGepXB3V/BSg7xy9+NSg2yF7l nvfFuhUDIV8bXN8mU/xg9a+bQYVrjpniBQXAE8i2q/rQWra4Kk9vlLOzfIzbvpxVTD4N dWfbnruA2iD8hNEqFED+TEFzL1fLXBGGAp+wY2U5Eafq/09DQVh/cuCBggDq6VzN1EVA wnOA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1690445255; x=1691050055; 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=YQ2nJ797AaeiRC4tEbuFSwr/qroaEGD64TBkJX9gwcc=; b=Vu2Cl+5k44B2EGhIOUl9M9xEbdBX+ZUMw2z1kX2AeTdfN9G0nyUWCDQnBCJERLezgR XGskRan/a++Tq+c+eX31Ai9VgbZh+a1CHFq7fzSggqJ3CXdEfbFknpVkRW61L04ZEqSt 1MM36D00VyEmc0+fYuRkaZAmrhn2V4enya2MwLHJs0Eu4oDQSd7FlZtxdpewnKutdX3O s9zSPcsmI4kqfjGMeouCKYr6apysD9UcFQ+Yir/v4NhjunWmKputYiv2IMZT7BrI8p5i 6m+K0YVG2RjQPoUo5Rd9BtVYrLrFrvpa14/vp8NJfXO+n+bBh7BZ55h9Q6ne0BbzRsWE EoWw== X-Gm-Message-State: ABy/qLZ1UuPw98cMfcC/RVZVkOZ2jw359XCA676R0+eestYDGv44KrfR k9PNjuNZcoBpPYdPoMQvT8xe+EKKYt4icy7rijs= X-Google-Smtp-Source: APBJJlExJjCwBoW4B5netumBOqdfs5+SJLDXxiJ/1dno6haNjCE+wUan/A+nwEsop7KuM9iLlMTgjA== X-Received: by 2002:a05:6a20:918e:b0:11a:dbb3:703b with SMTP id v14-20020a056a20918e00b0011adbb3703bmr5540739pzd.6.1690445233998; Thu, 27 Jul 2023 01:07:13 -0700 (PDT) Received: from C02DW0BEMD6R.bytedance.net ([203.208.167.147]) by smtp.gmail.com with ESMTPSA id j8-20020aa78d08000000b006828e49c04csm885872pfe.75.2023.07.27.01.07.02 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 27 Jul 2023 01:07:13 -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 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 v3 07/49] binder: dynamically allocate the android-binder shrinker Date: Thu, 27 Jul 2023 16:04:20 +0800 Message-Id: <20230727080502.77895-8-zhengqi.arch@bytedance.com> X-Mailer: git-send-email 2.24.3 (Apple Git-128) In-Reply-To: <20230727080502.77895-1-zhengqi.arch@bytedance.com> References: <20230727080502.77895-1-zhengqi.arch@bytedance.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@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..62675cedd38e 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_free(binder_shrinker); list_lru_destroy(&binder_alloc_lru); }