From nobody Fri Jan 2 18:51:20 2026 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 1D775CD68EA for ; Tue, 10 Oct 2023 03:21:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1441991AbjJJDVc (ORCPT ); Mon, 9 Oct 2023 23:21:32 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37672 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1441967AbjJJDV0 (ORCPT ); Mon, 9 Oct 2023 23:21:26 -0400 Received: from mail-yb1-xb49.google.com (mail-yb1-xb49.google.com [IPv6:2607:f8b0:4864:20::b49]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A7AF59E for ; Mon, 9 Oct 2023 20:21:24 -0700 (PDT) Received: by mail-yb1-xb49.google.com with SMTP id 3f1490d57ef6-d9a4a89ab5fso789591276.3 for ; Mon, 09 Oct 2023 20:21:24 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1696908084; x=1697512884; darn=vger.kernel.org; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:from:to:cc:subject:date:message-id:reply-to; bh=hC1pWunCMBCtxVf3YGG9j/q6Xl3rVbI2nQig93EJD1c=; b=yJL49vSJJ4IGXvINefEv9WQidpmtBVzYC6kKfAJ4r62g3i0soq5k5DBOcEv/Jfvg4b PpiV7IkuaHNDFyvHkDdUOhhQbcXN/OkwnsgYpQ3xuCtLxKn0ObQWP+RiCgYwQXPPWH4m 42DZvp5VZQQpDhVbD3SQYoeHoAIknD8NcNYSyAOl31isjOMXEmozxbblWsrIFjirPfEI lwBoTPshl2GSB5kxC6SPLir6nUQYpjMiVD1jW5taP2CmmJL5xTUMP3kG9IlSev42XwnQ zONR2NHp8+QKb5+B3o4562VgWZkbU4aW54d0NKQNBYaZoJOUPjIfJnbZ3S5AhY14Jlen MsTg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1696908084; x=1697512884; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=hC1pWunCMBCtxVf3YGG9j/q6Xl3rVbI2nQig93EJD1c=; b=rUr32wM+tXbzu6iW/dZ5DK+2strRctRpghKsenbVWIgD1m2uthjB83/s4xLL2yILEA KFTXAd2qmnYxt9RgtdAu1ypfsM88tPqnqhET3/kWD2C35W79z7xbw2X26pSJAkDjRhDw PO6wHjK/YEIg7xaCUgK3BvDhq44Pd6Jw8+u0E+UhdthFtUhUfoPL7X8Jg0UZ+ZtaX4sU s1z6WdnIX/k0krOEF4f9jlXAO8zF8zDeEAFRTEYxvNFQH63Iunu5hvGFXWdhKhSRAEV3 0yBnRMcWdP+cMdM8ACPXJGtUm4iWpGAZ+PQCsiiFGoL8O0VledkTytkxXfo0Zhn2OpQW xUww== X-Gm-Message-State: AOJu0YwkGh4cH1hYBCCq1YGAzbAI60Clqbyd4Gxp/FgLAnaj56jQCDff yAYqrVJkUxCC5H5E2B4PjG6WK+GT16IPn1I4 X-Google-Smtp-Source: AGHT+IFIrbr9jnt8AKgjFXbiV/tkMci7vpdggI/qLBKz9UQMIl0xyavjRIGPF8xVVyjEs532DFKybC2OPjpal40i X-Received: from yosry.c.googlers.com ([fda3:e722:ac3:cc00:20:ed76:c0a8:29b4]) (user=yosryahmed job=sendgmr) by 2002:a5b:b50:0:b0:d80:904d:c211 with SMTP id b16-20020a5b0b50000000b00d80904dc211mr250724ybr.7.1696908083837; Mon, 09 Oct 2023 20:21:23 -0700 (PDT) Date: Tue, 10 Oct 2023 03:21:13 +0000 In-Reply-To: <20231010032117.1577496-1-yosryahmed@google.com> Mime-Version: 1.0 References: <20231010032117.1577496-1-yosryahmed@google.com> X-Mailer: git-send-email 2.42.0.609.gbb76f46606-goog Message-ID: <20231010032117.1577496-3-yosryahmed@google.com> Subject: [PATCH v2 2/5] mm: memcg: move vmstats structs definition above flushing code From: Yosry Ahmed To: Andrew Morton Cc: Johannes Weiner , Michal Hocko , Roman Gushchin , Shakeel Butt , Muchun Song , Ivan Babrou , Tejun Heo , "=?UTF-8?q?Michal=20Koutn=C3=BD?=" , Waiman Long , kernel-team@cloudflare.com, Wei Xu , Greg Thelen , linux-mm@kvack.org, cgroups@vger.kernel.org, linux-kernel@vger.kernel.org, Yosry Ahmed Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" The following patch will make use of those structs in the flushing code, so move their definitions (and a few other dependencies) a little bit up to reduce the diff noise in the following patch. No functional change intended. Signed-off-by: Yosry Ahmed --- mm/memcontrol.c | 146 ++++++++++++++++++++++++------------------------ 1 file changed, 73 insertions(+), 73 deletions(-) diff --git a/mm/memcontrol.c b/mm/memcontrol.c index 4a194fcc9533..a393f1399a2b 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -570,6 +570,79 @@ mem_cgroup_largest_soft_limit_node(struct mem_cgroup_t= ree_per_node *mctz) return mz; } =20 +/* Subset of vm_event_item to report for memcg event stats */ +static const unsigned int memcg_vm_event_stat[] =3D { + PGPGIN, + PGPGOUT, + PGSCAN_KSWAPD, + PGSCAN_DIRECT, + PGSCAN_KHUGEPAGED, + PGSTEAL_KSWAPD, + PGSTEAL_DIRECT, + PGSTEAL_KHUGEPAGED, + PGFAULT, + PGMAJFAULT, + PGREFILL, + PGACTIVATE, + PGDEACTIVATE, + PGLAZYFREE, + PGLAZYFREED, +#if defined(CONFIG_MEMCG_KMEM) && defined(CONFIG_ZSWAP) + ZSWPIN, + ZSWPOUT, +#endif +#ifdef CONFIG_TRANSPARENT_HUGEPAGE + THP_FAULT_ALLOC, + THP_COLLAPSE_ALLOC, + THP_SWPOUT, + THP_SWPOUT_FALLBACK, +#endif +}; + +#define NR_MEMCG_EVENTS ARRAY_SIZE(memcg_vm_event_stat) +static int mem_cgroup_events_index[NR_VM_EVENT_ITEMS] __read_mostly; + +static void init_memcg_events(void) +{ + int i; + + for (i =3D 0; i < NR_MEMCG_EVENTS; ++i) + mem_cgroup_events_index[memcg_vm_event_stat[i]] =3D i + 1; +} + +static inline int memcg_events_index(enum vm_event_item idx) +{ + return mem_cgroup_events_index[idx] - 1; +} + +struct memcg_vmstats_percpu { + /* Local (CPU and cgroup) page state & events */ + long state[MEMCG_NR_STAT]; + unsigned long events[NR_MEMCG_EVENTS]; + + /* Delta calculation for lockless upward propagation */ + long state_prev[MEMCG_NR_STAT]; + unsigned long events_prev[NR_MEMCG_EVENTS]; + + /* Cgroup1: threshold notifications & softlimit tree updates */ + unsigned long nr_page_events; + unsigned long targets[MEM_CGROUP_NTARGETS]; +}; + +struct memcg_vmstats { + /* Aggregated (CPU and subtree) page state & events */ + long state[MEMCG_NR_STAT]; + unsigned long events[NR_MEMCG_EVENTS]; + + /* Non-hierarchical (CPU aggregated) page state & events */ + long state_local[MEMCG_NR_STAT]; + unsigned long events_local[NR_MEMCG_EVENTS]; + + /* Pending child counts during tree propagation */ + long state_pending[MEMCG_NR_STAT]; + unsigned long events_pending[NR_MEMCG_EVENTS]; +}; + /* * memcg and lruvec stats flushing * @@ -681,79 +754,6 @@ static void flush_memcg_stats_dwork(struct work_struct= *w) queue_delayed_work(system_unbound_wq, &stats_flush_dwork, FLUSH_TIME); } =20 -/* Subset of vm_event_item to report for memcg event stats */ -static const unsigned int memcg_vm_event_stat[] =3D { - PGPGIN, - PGPGOUT, - PGSCAN_KSWAPD, - PGSCAN_DIRECT, - PGSCAN_KHUGEPAGED, - PGSTEAL_KSWAPD, - PGSTEAL_DIRECT, - PGSTEAL_KHUGEPAGED, - PGFAULT, - PGMAJFAULT, - PGREFILL, - PGACTIVATE, - PGDEACTIVATE, - PGLAZYFREE, - PGLAZYFREED, -#if defined(CONFIG_MEMCG_KMEM) && defined(CONFIG_ZSWAP) - ZSWPIN, - ZSWPOUT, -#endif -#ifdef CONFIG_TRANSPARENT_HUGEPAGE - THP_FAULT_ALLOC, - THP_COLLAPSE_ALLOC, - THP_SWPOUT, - THP_SWPOUT_FALLBACK, -#endif -}; - -#define NR_MEMCG_EVENTS ARRAY_SIZE(memcg_vm_event_stat) -static int mem_cgroup_events_index[NR_VM_EVENT_ITEMS] __read_mostly; - -static void init_memcg_events(void) -{ - int i; - - for (i =3D 0; i < NR_MEMCG_EVENTS; ++i) - mem_cgroup_events_index[memcg_vm_event_stat[i]] =3D i + 1; -} - -static inline int memcg_events_index(enum vm_event_item idx) -{ - return mem_cgroup_events_index[idx] - 1; -} - -struct memcg_vmstats_percpu { - /* Local (CPU and cgroup) page state & events */ - long state[MEMCG_NR_STAT]; - unsigned long events[NR_MEMCG_EVENTS]; - - /* Delta calculation for lockless upward propagation */ - long state_prev[MEMCG_NR_STAT]; - unsigned long events_prev[NR_MEMCG_EVENTS]; - - /* Cgroup1: threshold notifications & softlimit tree updates */ - unsigned long nr_page_events; - unsigned long targets[MEM_CGROUP_NTARGETS]; -}; - -struct memcg_vmstats { - /* Aggregated (CPU and subtree) page state & events */ - long state[MEMCG_NR_STAT]; - unsigned long events[NR_MEMCG_EVENTS]; - - /* Non-hierarchical (CPU aggregated) page state & events */ - long state_local[MEMCG_NR_STAT]; - unsigned long events_local[NR_MEMCG_EVENTS]; - - /* Pending child counts during tree propagation */ - long state_pending[MEMCG_NR_STAT]; - unsigned long events_pending[NR_MEMCG_EVENTS]; -}; - unsigned long memcg_page_state(struct mem_cgroup *memcg, int idx) { long x =3D READ_ONCE(memcg->vmstats->state[idx]); --=20 2.42.0.609.gbb76f46606-goog