From patchwork Tue Feb 13 21:55:16 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Zi Yan X-Patchwork-Id: 13555718 Received: from out5-smtp.messagingengine.com (out5-smtp.messagingengine.com [66.111.4.29]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 5964B6214D; Tue, 13 Feb 2024 21:55:50 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=66.111.4.29 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1707861352; cv=none; b=MISIKfJGDbki8WY/Ge/kZlgaRJXSDub7enexA2jv4v1iSvO7XUbK3Difot5n5h6qVC1L78sYWN78qtdMqCC3SP7vcD0HIf+lakh9JEDP4PWOevS+h41vYDlhS6cZIYsUTrgxstS3UeOEKxxP6UgptHIxGAiHYFJqrxmml4WNq0I= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1707861352; c=relaxed/simple; bh=UqNu37izsdBNbfTcNTy5md1Flo14ewszOLHxEmwptdg=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=H/FdOxVoLSb517b3svt4cE8Lj47jBMbCfaZ4p2OXJf4sSDERkZq5JkExqGoz6oyZtYd9ABgCOGRB6V51zgfd+ZNOJTB5ZtTCtlIEop5pB/8Y20HcTanGqOSWMn11i2CW2VSh/9SPafTkJQt1bdCokGRN3/oOBUbZ1RvgLRCVIBo= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=sent.com; spf=pass smtp.mailfrom=sent.com; dkim=pass (2048-bit key) header.d=sent.com header.i=@sent.com header.b=C70tT3/h; dkim=pass (2048-bit key) header.d=messagingengine.com header.i=@messagingengine.com header.b=mfJ6oPkF; arc=none smtp.client-ip=66.111.4.29 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=sent.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=sent.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=sent.com header.i=@sent.com header.b="C70tT3/h"; dkim=pass (2048-bit key) header.d=messagingengine.com header.i=@messagingengine.com header.b="mfJ6oPkF" Received: from compute3.internal (compute3.nyi.internal [10.202.2.43]) by mailout.nyi.internal (Postfix) with ESMTP id 632325C0112; Tue, 13 Feb 2024 16:55:49 -0500 (EST) Received: from mailfrontend2 ([10.202.2.163]) by compute3.internal (MEProxy); Tue, 13 Feb 2024 16:55:49 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sent.com; h=cc :cc:content-transfer-encoding:content-type:content-type:date :date:from:from:in-reply-to:in-reply-to:message-id:mime-version :references:reply-to:reply-to:subject:subject:to:to; s=fm3; t= 1707861349; x=1707947749; bh=w6VhDK8TXvu8VmS0cIwR/bVucmXbgvOXS24 MFWRb9kQ=; b=C70tT3/hxvmwRWrVgxnS8fozz4YHtS6gPhAjMZn75BqWt0l64Kq 6NAknIY8hodeTZXxf1TcFW+hmSrY8Ez6UcvgHwAYCo/PzX/kaod9FkQg4YxM6Qap +Q0U0w8f96uywhMHVijq7849z79hzfhu9xT1WBbNjbnqePwm5/ZmuWlXZzd9dWG1 Ihah9K6AUWgSgv9aAkOqam/jPngyvV2GhLW2LtwWP+KQJ+smHMCekknDEyUOxKUI uL233jsmWJ9skW3QUzLrpOgUlN4+wsNmJGn6/f3rdboztQfhMVpqShelgfvJGMBK BzByecW+/ekBdo0qS4Pd0bLg+VuomGNJegA== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:cc:content-transfer-encoding :content-type:content-type:date:date:feedback-id:feedback-id :from:from:in-reply-to:in-reply-to:message-id:mime-version :references:reply-to:reply-to:subject:subject:to:to:x-me-proxy :x-me-proxy:x-me-sender:x-me-sender:x-sasl-enc; s=fm3; t= 1707861349; x=1707947749; bh=w6VhDK8TXvu8VmS0cIwR/bVucmXbgvOXS24 MFWRb9kQ=; b=mfJ6oPkFyNA+mLkOP/AUEVBP9KImpo/pDaBA8WA4QMCAq03CiTz 492X3jwKiuTbKwuWwNH62NYygt2WBIlP2hxakQ6u0PuV2KIigxiRUrBfckunC0MP nt/aNZDy4MAzjFvlZ6uLK75/N92HY+cpE2wE0m34hVBxGSzd/XcVGP8Fya3eleTG OdN/SgRo6balkm91Wog9MxEYiVA742kmaYLsnDsEPH9WryD4QW9km77C9HyraNOY ktQRHTwI//dgaj4iVwiDumZjJirsDYev9o0Uv1zHeLkNIc7VjvRc0XXR/UwtChiu Z5/e6Y2a0o5yXwC0zyZf0TbF28RyZw1gxnQ== X-ME-Sender: X-ME-Received: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgedvledrudehgdduheegucetufdoteggodetrfdotf fvucfrrhhofhhilhgvmecuhfgrshhtofgrihhlpdfqfgfvpdfurfetoffkrfgpnffqhgen uceurghilhhouhhtmecufedttdenucesvcftvggtihhpihgvnhhtshculddquddttddmne cujfgurhephffvvefufffkofgjfhhrgggtgfesthekredtredtjeenucfhrhhomhepkghi ucgjrghnuceoiihirdihrghnsehsvghnthdrtghomheqnecuggftrfgrthhtvghrnhepje ekteekffelleekudfftdefvddtjeejuedtuedtteegjefgvedtfedujeekieevnecuvehl uhhsthgvrhfuihiivgeptdenucfrrghrrghmpehmrghilhhfrhhomhepiihirdihrghnse hsvghnthdrtghomh X-ME-Proxy: Feedback-ID: iccd040f4:Fastmail Received: by mail.messagingengine.com (Postfix) with ESMTPA; Tue, 13 Feb 2024 16:55:48 -0500 (EST) From: Zi Yan To: "Pankaj Raghav (Samsung)" , linux-mm@kvack.org Cc: Zi Yan , "Matthew Wilcox (Oracle)" , David Hildenbrand , Yang Shi , Yu Zhao , "Kirill A . Shutemov" , Ryan Roberts , =?utf-8?q?Michal_Koutn=C3=BD?= , Roman Gushchin , "Zach O'Keefe" , Hugh Dickins , Mcgrof Chamberlain , Andrew Morton , linux-kernel@vger.kernel.org, cgroups@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kselftest@vger.kernel.org Subject: [PATCH v4 3/7] mm: memcg: make memcg huge page split support any order split. Date: Tue, 13 Feb 2024 16:55:16 -0500 Message-ID: <20240213215520.1048625-4-zi.yan@sent.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240213215520.1048625-1-zi.yan@sent.com> References: <20240213215520.1048625-1-zi.yan@sent.com> Reply-To: Zi Yan Precedence: bulk X-Mailing-List: linux-kselftest@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Zi Yan It sets memcg information for the pages after the split. A new parameter new_order is added to tell the order of subpages in the new page, always 0 for now. It prepares for upcoming changes to support split huge page to any lower order. Signed-off-by: Zi Yan Acked-by: David Hildenbrand --- include/linux/memcontrol.h | 4 ++-- mm/huge_memory.c | 2 +- mm/memcontrol.c | 11 ++++++----- mm/page_alloc.c | 4 ++-- 4 files changed, 11 insertions(+), 10 deletions(-) diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h index 173bbb53c1ec..9a2dea92be0e 100644 --- a/include/linux/memcontrol.h +++ b/include/linux/memcontrol.h @@ -1163,7 +1163,7 @@ static inline void memcg_memory_event_mm(struct mm_struct *mm, rcu_read_unlock(); } -void split_page_memcg(struct page *head, int order); +void split_page_memcg(struct page *head, int old_order, int new_order); unsigned long mem_cgroup_soft_limit_reclaim(pg_data_t *pgdat, int order, gfp_t gfp_mask, @@ -1621,7 +1621,7 @@ void count_memcg_event_mm(struct mm_struct *mm, enum vm_event_item idx) { } -static inline void split_page_memcg(struct page *head, int order) +static inline void split_page_memcg(struct page *head, int old_order, int new_order) { } diff --git a/mm/huge_memory.c b/mm/huge_memory.c index f079b02f1f59..3d30eccd3a7f 100644 --- a/mm/huge_memory.c +++ b/mm/huge_memory.c @@ -2880,7 +2880,7 @@ static void __split_huge_page(struct page *page, struct list_head *list, int order = folio_order(folio); /* complete memcg works before add pages to LRU */ - split_page_memcg(head, order); + split_page_memcg(head, order, 0); if (folio_test_anon(folio) && folio_test_swapcache(folio)) { offset = swp_offset(folio->swap); diff --git a/mm/memcontrol.c b/mm/memcontrol.c index 404e529644c0..27d53715d8dc 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -3608,23 +3608,24 @@ void obj_cgroup_uncharge(struct obj_cgroup *objcg, size_t size) /* * Because page_memcg(head) is not set on tails, set it now. */ -void split_page_memcg(struct page *head, int order) +void split_page_memcg(struct page *head, int old_order, int new_order) { struct folio *folio = page_folio(head); struct mem_cgroup *memcg = folio_memcg(folio); int i; - unsigned int nr = 1 << order; + unsigned int old_nr = 1 << old_order; + unsigned int new_nr = 1 << new_order; if (mem_cgroup_disabled() || !memcg) return; - for (i = 1; i < nr; i++) + for (i = new_nr; i < old_nr; i += new_nr) folio_page(folio, i)->memcg_data = folio->memcg_data; if (folio_memcg_kmem(folio)) - obj_cgroup_get_many(__folio_objcg(folio), nr - 1); + obj_cgroup_get_many(__folio_objcg(folio), old_nr / new_nr - 1); else - css_get_many(&memcg->css, nr - 1); + css_get_many(&memcg->css, old_nr / new_nr - 1); } #ifdef CONFIG_SWAP diff --git a/mm/page_alloc.c b/mm/page_alloc.c index b6e8fe6fed67..9d4dd41d0647 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -2653,7 +2653,7 @@ void split_page(struct page *page, unsigned int order) for (i = 1; i < (1 << order); i++) set_page_refcounted(page + i); split_page_owner(page, order); - split_page_memcg(page, order); + split_page_memcg(page, order, 0); } EXPORT_SYMBOL_GPL(split_page); @@ -4838,7 +4838,7 @@ static void *make_alloc_exact(unsigned long addr, unsigned int order, struct page *last = page + nr; split_page_owner(page, order); - split_page_memcg(page, order); + split_page_memcg(page, order, 0); while (page < --last) set_page_refcounted(last);