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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 95E0DCCA47F for ; Sun, 19 Jun 2022 15:50:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232649AbiFSPuq (ORCPT ); Sun, 19 Jun 2022 11:50:46 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42542 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229490AbiFSPuq (ORCPT ); Sun, 19 Jun 2022 11:50:46 -0400 Received: from mail-pj1-x102c.google.com (mail-pj1-x102c.google.com [IPv6:2607:f8b0:4864:20::102c]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 37068BC94 for ; Sun, 19 Jun 2022 08:50:45 -0700 (PDT) Received: by mail-pj1-x102c.google.com with SMTP id w19-20020a17090a8a1300b001ec79064d8dso5326877pjn.2 for ; Sun, 19 Jun 2022 08:50:45 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=pbJcR0JCgnnBinC8hqBQ8PqrT65xvYVhQt3SCbh4L30=; b=gL00DEY/pyx6xquZdsMWkhU03MRL9mGCjCzvdQLvuCKP+h0F+pUJpIDb/Fok05wmTd 2+CfJ8htUDSpBIWHUdOUWZDWShYErmlvKY3bZtamer8ejyjCB/hXwyjExzv6synKSlRs 8IQp9bwHIZhN1pxPrkMCIbL9fzBCKegJ3aAxkT1SuGFDU6Upkuza0BdySmGk/VIQC3nz RiYOA7kjCPEnstqkceUyef3q7WKD5xMbvP/9EPQ5yRxnxpt13eziLgEEHUKqzjxM8QwR HANv+Klf9VzXVYgF6saPC9cZFvotG47okLI1KN63Koldz7qt8xAz+8tuWfWejJNZl5YA 12JQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=pbJcR0JCgnnBinC8hqBQ8PqrT65xvYVhQt3SCbh4L30=; b=2K9omQ3VaUhhXJ6wKJrEqSP186YVsII6FRUOTKAS8kGoQDlm0Vx6+gPHNpts0E712p VEwocV63fc4da7ax7iNuaanmpXKKZ1gdf/AVz5zp0rOVQW6pA7Julst06aM76Rknag6W xaEyo6aZRYfCfcEVpXlj0s8UOzC37U4JUL1JBr9m0WeZcsqtM1GOR7Phv00Yl4iGqM8U b1+HtR3MbZ8B7c1Ccc2eF2bfQUdhBh0hK3BdNQvjSXinrQeifOnEEUQR3uc5u81jYy2A 7B1dtB2edFhi2/a9nHWNj9rG6XkD+KfYrhKdo81w9F4lDAPcOska+ATkoRbXw3EWf41S vMxw== X-Gm-Message-State: AJIora/fyDAzphdl7hAlKjYcOjMCzSW3D59LTlhQPBtNOfqLl1t2T9Bc gDHA1SUHTPrMwg3ZzgONz5g= X-Google-Smtp-Source: AGRyM1sijBY2x0OKk+fpSwQADGBG+54XL0sh/Ig4fH5KnHiRM32aoKLh3IZrhd4oeJ52rbEU+RGMGw== X-Received: by 2002:a17:90a:740e:b0:1e2:a631:87e6 with SMTP id a14-20020a17090a740e00b001e2a63187e6mr21950473pjg.115.1655653844671; Sun, 19 Jun 2022 08:50:44 -0700 (PDT) Received: from vultr.guest ([2001:19f0:6001:2b24:5400:4ff:fe09:b144]) by smtp.gmail.com with ESMTPSA id z10-20020a1709027e8a00b001690a7df347sm6381761pla.96.2022.06.19.08.50.42 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 19 Jun 2022 08:50:43 -0700 (PDT) From: Yafang Shao To: ast@kernel.org, daniel@iogearbox.net, andrii@kernel.org, kafai@fb.com, songliubraving@fb.com, yhs@fb.com, john.fastabend@gmail.com, kpsingh@kernel.org, quentin@isovalent.com, hannes@cmpxchg.org, mhocko@kernel.org, roman.gushchin@linux.dev, shakeelb@google.com, songmuchun@bytedance.com, akpm@linux-foundation.org, cl@linux.com, penberg@kernel.org, rientjes@google.com, iamjoonsoo.kim@lge.com, vbabka@suse.cz Cc: linux-mm@kvack.org, bpf@vger.kernel.org, Yafang Shao Subject: [RFC PATCH bpf-next 01/10] mm, memcg: Add a new helper memcg_should_recharge() Date: Sun, 19 Jun 2022 15:50:23 +0000 Message-Id: <20220619155032.32515-2-laoar.shao@gmail.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20220619155032.32515-1-laoar.shao@gmail.com> References: <20220619155032.32515-1-laoar.shao@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: bpf@vger.kernel.org Currently we only recharge pages from an offline memcg or reparented memcg. In the future we may explicitly introduce a need_recharge state for the memcg which should be recharged. Signed-off-by: Yafang Shao --- include/linux/memcontrol.h | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h index 9ecead1042b9..cf074156c6ac 100644 --- a/include/linux/memcontrol.h +++ b/include/linux/memcontrol.h @@ -1755,6 +1755,18 @@ static inline void count_objcg_event(struct obj_cgroup *objcg, rcu_read_unlock(); } +static inline bool memcg_need_recharge(struct mem_cgroup *memcg) +{ + if (!memcg || memcg == root_mem_cgroup) + return false; + /* + * Currently we only recharge pages from an offline memcg, + * in the future we may explicitly introduce a need_recharge + * state for the memcg which should be recharged. + */ + return memcg->kmemcg_id == memcg->id.id ? false : true; +} + #else static inline bool mem_cgroup_kmem_disabled(void) { @@ -1806,6 +1818,11 @@ static inline void count_objcg_event(struct obj_cgroup *objcg, { } +static inline bool memcg_need_recharge(struct mem_cgroup *memcg) +{ + return false; +} + #endif /* CONFIG_MEMCG_KMEM */ #if defined(CONFIG_MEMCG_KMEM) && defined(CONFIG_ZSWAP) -- 2.17.1