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 39D7BC6FA82 for ; Fri, 2 Sep 2022 02:30:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235090AbiIBCac (ORCPT ); Thu, 1 Sep 2022 22:30:32 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58312 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235049AbiIBCaV (ORCPT ); Thu, 1 Sep 2022 22:30:21 -0400 Received: from mail-pl1-x62f.google.com (mail-pl1-x62f.google.com [IPv6:2607:f8b0:4864:20::62f]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 89A073342A; Thu, 1 Sep 2022 19:30:18 -0700 (PDT) Received: by mail-pl1-x62f.google.com with SMTP id c2so571538plo.3; Thu, 01 Sep 2022 19:30:18 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date; bh=4M2wIpbTEjtveSWIAJbVEhxb96NjEAIn1cqGJw9nWyA=; b=jzt0LFNt/yVYD/3NUXzIBoEoI9rvRu241Gab6qFW2E6IBiyGaWJo2ZbTstkJc00kFU 9pZPZRV9AJV3QOLgrCv3w0o+0Zz6uTS264NCkTYPkC1JfBWOvOR9S/q6z3QfpqL91hZc Gw3YnTYgM5ch+cMtv6X6YSKgZFeHqM5lAc0gvuZUP6goEJJhbrHBcgfQHPcp/Hsa0J64 +mB9/MkbcbHohZh88cJ3YPci73xopvwgOehe+rNkUxm4HG3wIVKo9q/fsO4eN9/sJLWH 7EiEn2lzWBAUsRbZFv3jPcIH8tsIo6MVCShqoy1P8lviU8jjl7rXfdx2Su2uGv7ACgRC t22g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; 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; bh=4M2wIpbTEjtveSWIAJbVEhxb96NjEAIn1cqGJw9nWyA=; b=OCyxvjtg8o8czYCgoCPq2GJHwNVMzPPxsJsodoS9DqbpJBd4rJVE9e505aVudoDE54 nRe31cOitg+ilkKWbGtNeltBOKyw3d/Zv/EoYwPq0Kz3sCtVsko9UjZJLd8axTMkj1vi Rj7ffBkETXv5AYtHnfYdEpaI4/zvjInfyy6JsjdhYjrDZTTiibSCIWi8S6Pyay9to4rR DpDyyvoO3MZeE9Facc6NtYnSTIOrwKkoLjkHBziU4aGvfYI9eeE1VKgSL0SV6btB3lxN yiYNkSDdQfui+RoJFn/w3B4IV3ZdX2qJYHMl86aIXL9lbUCQbNQukJdXPhFymekdC3zh KbOg== X-Gm-Message-State: ACgBeo2q9eDj6gtym4l+G/41+fsqFUqOanknZbou19+ZUqJN2hPOmrRY dcRmduSYwkBw8dFwKudzZ4E= X-Google-Smtp-Source: AA6agR7FG/Tgj/X3jzFMLSjqn8xywcVs0S+evyTTodrZ7Ljz0USgvqGYM2KFO6GT0BcGn+RNK9ts3A== X-Received: by 2002:a17:902:db12:b0:16e:eaf9:e98d with SMTP id m18-20020a170902db1200b0016eeaf9e98dmr33174440plx.172.1662085817212; Thu, 01 Sep 2022 19:30:17 -0700 (PDT) Received: from vultr.guest ([2001:19f0:6001:50ea:5400:4ff:fe1f:fbe2]) by smtp.gmail.com with ESMTPSA id j4-20020a170902da8400b0017297a6b39dsm269719plx.265.2022.09.01.19.30.15 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 01 Sep 2022 19:30:16 -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, sdf@google.com, haoluo@google.com, jolsa@kernel.org, hannes@cmpxchg.org, mhocko@kernel.org, roman.gushchin@linux.dev, shakeelb@google.com, songmuchun@bytedance.com, akpm@linux-foundation.org, tj@kernel.org, lizefan.x@bytedance.com Cc: cgroups@vger.kernel.org, netdev@vger.kernel.org, bpf@vger.kernel.org, linux-mm@kvack.org, Yafang Shao Subject: [PATCH bpf-next v3 03/13] bpf: Define bpf_map_{get,put}_memcg for !CONFIG_MEMCG_KMEM Date: Fri, 2 Sep 2022 02:29:53 +0000 Message-Id: <20220902023003.47124-4-laoar.shao@gmail.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20220902023003.47124-1-laoar.shao@gmail.com> References: <20220902023003.47124-1-laoar.shao@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org We can use this helper when CONFIG_MEMCG_KMEM or CONFIG_MEMCG is not set. It also moves bpf_map_{get,put}_memcg into include/linux/bpf.h, so these two helpers can be used in other source files. Signed-off-by: Yafang Shao --- include/linux/bpf.h | 26 ++++++++++++++++++++++++++ include/linux/memcontrol.h | 10 ++++++++++ kernel/bpf/syscall.c | 13 ------------- 3 files changed, 36 insertions(+), 13 deletions(-) diff --git a/include/linux/bpf.h b/include/linux/bpf.h index 9c16749..a50d29c 100644 --- a/include/linux/bpf.h +++ b/include/linux/bpf.h @@ -27,6 +27,7 @@ #include #include #include +#include struct bpf_verifier_env; struct bpf_verifier_log; @@ -2594,4 +2595,29 @@ static inline void bpf_cgroup_atype_get(u32 attach_btf_id, int cgroup_atype) {} static inline void bpf_cgroup_atype_put(int cgroup_atype) {} #endif /* CONFIG_BPF_LSM */ +#ifdef CONFIG_MEMCG_KMEM +static inline struct mem_cgroup *bpf_map_get_memcg(const struct bpf_map *map) +{ + if (map->objcg) + return get_mem_cgroup_from_objcg(map->objcg); + + return root_mem_cgroup; +} + +static inline void bpf_map_put_memcg(struct mem_cgroup *memcg) +{ + mem_cgroup_put(memcg); +} + +#else +static inline struct mem_cgroup *bpf_map_get_memcg(const struct bpf_map *map) +{ + return root_memcg(); +} + +static inline void bpf_map_put_memcg(struct mem_cgroup *memcg) +{ +} +#endif + #endif /* _LINUX_BPF_H */ diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h index 4d31ce5..6040b5c 100644 --- a/include/linux/memcontrol.h +++ b/include/linux/memcontrol.h @@ -361,6 +361,11 @@ struct mem_cgroup { extern struct mem_cgroup *root_mem_cgroup; +static inline struct mem_cgroup *root_memcg(void) +{ + return root_mem_cgroup; +} + enum page_memcg_data_flags { /* page->memcg_data is a pointer to an objcgs vector */ MEMCG_DATA_OBJCGS = (1UL << 0), @@ -1147,6 +1152,11 @@ unsigned long mem_cgroup_soft_limit_reclaim(pg_data_t *pgdat, int order, #define MEM_CGROUP_ID_SHIFT 0 #define MEM_CGROUP_ID_MAX 0 +static inline struct mem_cgroup *root_memcg(void) +{ + return NULL; +} + static inline struct mem_cgroup *folio_memcg(struct folio *folio) { return NULL; diff --git a/kernel/bpf/syscall.c b/kernel/bpf/syscall.c index 7ce024c..eaf1906 100644 --- a/kernel/bpf/syscall.c +++ b/kernel/bpf/syscall.c @@ -433,19 +433,6 @@ static void bpf_map_release_memcg(struct bpf_map *map) obj_cgroup_put(map->objcg); } -static struct mem_cgroup *bpf_map_get_memcg(const struct bpf_map *map) -{ - if (map->objcg) - return get_mem_cgroup_from_objcg(map->objcg); - - return root_mem_cgroup; -} - -static void bpf_map_put_memcg(struct mem_cgroup *memcg) -{ - mem_cgroup_put(memcg); -} - void *bpf_map_kmalloc_node(const struct bpf_map *map, size_t size, gfp_t flags, int node) { -- 1.8.3.1