From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5A99CC433E4 for ; Fri, 19 Mar 2021 16:39:38 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2F3BF61986 for ; Fri, 19 Mar 2021 16:39:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230274AbhCSQjL (ORCPT ); Fri, 19 Mar 2021 12:39:11 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55066 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230028AbhCSQjC (ORCPT ); Fri, 19 Mar 2021 12:39:02 -0400 Received: from mail-pj1-x1032.google.com (mail-pj1-x1032.google.com [IPv6:2607:f8b0:4864:20::1032]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C7423C06174A for ; Fri, 19 Mar 2021 09:39:02 -0700 (PDT) Received: by mail-pj1-x1032.google.com with SMTP id j6-20020a17090adc86b02900cbfe6f2c96so5141638pjv.1 for ; Fri, 19 Mar 2021 09:39:02 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bytedance-com.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=lvoDDerEyyb4UPjtZfh5TD8N4MiB2jCVDZj0evdETsk=; b=fQAZGlvsU3OmzhfCCu/HWUmLUqVlSmLNPymtXoqiH7pS5/I0Kze/+9HQ83upaFWyGx 27vF1mZmZ0JHLI8Z8wq6ozzzU8AqboHGFbaj6Czj3czD/Ua7ReM1HfpWi/ebB0rkQZJL QN3YN+xGwz+97sGV5s/Q+Wa1T2XoZP1VGv00rN5XpMUWNMkACte4/mM3cAEhUqPG9A+g AhZHHDV7js9Fx2Y1DGTvB4kSZVDdPlKTrI3wfg/n9WForsmh7tqgzJ4t0qL8Awh/oHQE cbES+FQudokbFgW0+B2pkr3ARIYPrCMFjr16euT252iBOmH1BRmJPtoRYrCBMkRwwsFF v+8g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=lvoDDerEyyb4UPjtZfh5TD8N4MiB2jCVDZj0evdETsk=; b=gNm2/UIoEYeNbkgZ54Vogw9f8cPDeQmhj1oXa0jeC40f9kP6xPTUoRrm1UpJxCL9bT DnnpNMi2VNI2MLFPBZ0sOx8wlbrRL7spnPvNVy88QZBzHx2oW1Jrpurc3L9q2Ad1X1sY Xw3I2ceEXIfvaBek9Sa+G+Pok8P1H7oglp91dNLGE9KAdCTMu5yuf4hJB1QMFkrRJlCw +UegrUVrKNYay10svCpydFQq+SBBLpDOBfu1ptB8PxwEmPQSnJOC2DOzMsIdjbsW5FL3 0KeYXx0S/mw/N+PL2JFLw06yiwvx0B/D/ZWmCIl5YSTyX+8Ee18ufmdI65/k46rdxxwV RH0A== X-Gm-Message-State: AOAM5313TgJC57JMhAVyAdVGmul62PoYqWJbgNpvDK5Kcxn3+urY9cYr biazFGyYbxlFRbuXUpTxNoheWA== X-Google-Smtp-Source: ABdhPJzTX5iyroetnM6aj9hw9+8hw65hqaf8cBYjqAVBt6aCABn+31HsHiv/OzYOJZnwh6rZk4GGaw== X-Received: by 2002:a17:90b:ece:: with SMTP id gz14mr10719879pjb.192.1616171942380; Fri, 19 Mar 2021 09:39:02 -0700 (PDT) Received: from localhost.bytedance.net ([139.177.225.231]) by smtp.gmail.com with ESMTPSA id z25sm5860239pfn.37.2021.03.19.09.38.58 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Fri, 19 Mar 2021 09:39:02 -0700 (PDT) From: Muchun Song To: guro@fb.com, hannes@cmpxchg.org, mhocko@kernel.org, akpm@linux-foundation.org, shakeelb@google.com, vdavydov.dev@gmail.com Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org, duanxiongchun@bytedance.com, Muchun Song Subject: [PATCH v5 6/7] mm: memcontrol: inline __memcg_kmem_{un}charge() into obj_cgroup_{un}charge_pages() Date: Sat, 20 Mar 2021 00:38:19 +0800 Message-Id: <20210319163821.20704-7-songmuchun@bytedance.com> X-Mailer: git-send-email 2.21.0 (Apple Git-122) In-Reply-To: <20210319163821.20704-1-songmuchun@bytedance.com> References: <20210319163821.20704-1-songmuchun@bytedance.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org There is only one user of __memcg_kmem_charge(), so manually inline __memcg_kmem_charge() to obj_cgroup_charge_pages(). Similarly manually inline __memcg_kmem_uncharge() into obj_cgroup_uncharge_pages() and call obj_cgroup_uncharge_pages() in obj_cgroup_release(). This is just code cleanup without any functionality changes. Signed-off-by: Muchun Song --- mm/memcontrol.c | 63 +++++++++++++++++++++++---------------------------------- 1 file changed, 25 insertions(+), 38 deletions(-) diff --git a/mm/memcontrol.c b/mm/memcontrol.c index 962499542531..249bf6b4d94c 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -255,10 +255,8 @@ struct cgroup_subsys_state *vmpressure_to_css(struct vmpressure *vmpr) #ifdef CONFIG_MEMCG_KMEM extern spinlock_t css_set_lock; -static int __memcg_kmem_charge(struct mem_cgroup *memcg, gfp_t gfp, - unsigned int nr_pages); -static void __memcg_kmem_uncharge(struct mem_cgroup *memcg, - unsigned int nr_pages); +static void obj_cgroup_uncharge_pages(struct obj_cgroup *objcg, + unsigned int nr_pages); static void obj_cgroup_release(struct percpu_ref *ref) { @@ -295,7 +293,7 @@ static void obj_cgroup_release(struct percpu_ref *ref) spin_lock_irqsave(&css_set_lock, flags); memcg = obj_cgroup_memcg(objcg); if (nr_pages) - __memcg_kmem_uncharge(memcg, nr_pages); + obj_cgroup_uncharge_pages(objcg, nr_pages); list_del(&objcg->list); mem_cgroup_put(memcg); spin_unlock_irqrestore(&css_set_lock, flags); @@ -3046,46 +3044,45 @@ static void memcg_free_cache_id(int id) ida_simple_remove(&memcg_cache_ida, id); } +/* + * obj_cgroup_uncharge_pages: uncharge a number of kernel pages from a objcg + * @objcg: object cgroup to uncharge + * @nr_pages: number of pages to uncharge + */ static void obj_cgroup_uncharge_pages(struct obj_cgroup *objcg, unsigned int nr_pages) { struct mem_cgroup *memcg; memcg = get_mem_cgroup_from_objcg(objcg); - __memcg_kmem_uncharge(memcg, nr_pages); - css_put(&memcg->css); -} -static int obj_cgroup_charge_pages(struct obj_cgroup *objcg, gfp_t gfp, - unsigned int nr_pages) -{ - struct mem_cgroup *memcg; - int ret; + if (!cgroup_subsys_on_dfl(memory_cgrp_subsys)) + page_counter_uncharge(&memcg->kmem, nr_pages); + refill_stock(memcg, nr_pages); - memcg = get_mem_cgroup_from_objcg(objcg); - ret = __memcg_kmem_charge(memcg, gfp, nr_pages); css_put(&memcg->css); - - return ret; } -/** - * __memcg_kmem_charge: charge a number of kernel pages to a memcg - * @memcg: memory cgroup to charge +/* + * obj_cgroup_charge_pages: charge a number of kernel pages to a objcg + * @objcg: object cgroup to charge * @gfp: reclaim mode * @nr_pages: number of pages to charge * * Returns 0 on success, an error code on failure. */ -static int __memcg_kmem_charge(struct mem_cgroup *memcg, gfp_t gfp, - unsigned int nr_pages) +static int obj_cgroup_charge_pages(struct obj_cgroup *objcg, gfp_t gfp, + unsigned int nr_pages) { struct page_counter *counter; + struct mem_cgroup *memcg; int ret; + memcg = get_mem_cgroup_from_objcg(objcg); + ret = try_charge(memcg, gfp, nr_pages); if (ret) - return ret; + goto out; if (!cgroup_subsys_on_dfl(memory_cgrp_subsys) && !page_counter_try_charge(&memcg->kmem, nr_pages, &counter)) { @@ -3097,25 +3094,15 @@ static int __memcg_kmem_charge(struct mem_cgroup *memcg, gfp_t gfp, */ if (gfp & __GFP_NOFAIL) { page_counter_charge(&memcg->kmem, nr_pages); - return 0; + goto out; } cancel_charge(memcg, nr_pages); - return -ENOMEM; + ret = -ENOMEM; } - return 0; -} - -/** - * __memcg_kmem_uncharge: uncharge a number of kernel pages from a memcg - * @memcg: memcg to uncharge - * @nr_pages: number of pages to uncharge - */ -static void __memcg_kmem_uncharge(struct mem_cgroup *memcg, unsigned int nr_pages) -{ - if (!cgroup_subsys_on_dfl(memory_cgrp_subsys)) - page_counter_uncharge(&memcg->kmem, nr_pages); +out: + css_put(&memcg->css); - refill_stock(memcg, nr_pages); + return ret; } /** -- 2.11.0