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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 90FDCD1AD59 for ; Wed, 16 Oct 2024 13:30:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:Cc:To:From: Reply-To:Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=z91ntDsVwdZpjEjKfVCxnJdh7uWomOInGMEWm4OJYtc=; b=fTlYys9oMHAfLgSstJPOikpaIb Bkj219sClMReR7Q63efF6hTLKMQUdsaQQGQPcUXqU+n7kSvt/QdiOU0EF9n84oZFxSRLCu69lbjBr 78EcB8P0dWQCG5ieHHEOhuwXM83ujEsBQGKBLBtSpyVXUlxzBNHBScAQHUyX5eHGJjx9vu0j/Fw8k lzXSNU0R+ahbXazZmIi5EMU0/QkjsDy/AhuKLOLiYYf7W3Ygv9VzdHKA0Axs8OeaWUmuXqKiw0OW7 A42zjSlyIF1vSodTyZi9CXABHSSTSxVgalEjhQdRuTJS5XycJOgA8hFTrpxre+6t0SNGdcEngUZV0 myqQNd8w==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1t146v-0000000Bvma-3288; Wed, 16 Oct 2024 13:30:45 +0000 Received: from dfw.source.kernel.org ([2604:1380:4641:c500::1]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1t135f-0000000Biz3-1T6N; Wed, 16 Oct 2024 12:25:25 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by dfw.source.kernel.org (Postfix) with ESMTP id 4B4E05C076C; Wed, 16 Oct 2024 12:25:18 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 8ED4DC4CECF; Wed, 16 Oct 2024 12:25:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1729081522; bh=qY1WKPuZvKCisJh16UHTZvWAJ6UH0NTYbU6n2itLRWc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=g6T+kZiFSqZ4TagPYf5fsDWvIwMyVmc/rIpDws8S1OTo0y6QOWVDc5qC6gaV/ISqU UWlanIBJ5xIZe2Hfv4/v0MqxDUNOgWAOXwgGWmBdRJpC/JalXiouJtn/fWY3w9FMAu YAl7mmk+yrsbAAifUZMtOv0J1PkjMyPcGQpYYkgmYpzxRH1LefTbW+/1SlTNXu+vDF oPK7kX3o+IaknOAiReieijE3AL3ZCi1UWISEgHd3zgq0Lp6iWu3VZEAd0URT/qaF3I p+yJd1kdNmQPktmGeRMXsX6zNcmMgDX9IOZWUoJjxQ2GpJsz+2qtsgktFeijZ740Ln BTeUsUsoJGaXg== From: Mike Rapoport To: Andrew Morton , Luis Chamberlain Cc: Andreas Larsson , Andy Lutomirski , Ard Biesheuvel , Arnd Bergmann , Borislav Petkov , Brian Cain , Catalin Marinas , Christoph Hellwig , Christophe Leroy , Dave Hansen , Dinh Nguyen , Geert Uytterhoeven , Guo Ren , Helge Deller , Huacai Chen , Ingo Molnar , Johannes Berg , John Paul Adrian Glaubitz , Kent Overstreet , "Liam R. Howlett" , Mark Rutland , Masami Hiramatsu , Matt Turner , Max Filippov , Michael Ellerman , Michal Simek , Mike Rapoport , Oleg Nesterov , Palmer Dabbelt , Peter Zijlstra , Richard Weinberger , Russell King , Song Liu , Stafford Horne , Steven Rostedt , Suren Baghdasaryan , Thomas Bogendoerfer , Thomas Gleixner , Uladzislau Rezki , Vineet Gupta , Will Deacon , bpf@vger.kernel.org, linux-alpha@vger.kernel.org, linux-arch@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-csky@vger.kernel.org, linux-hexagon@vger.kernel.org, linux-kernel@vger.kernel.org, linux-m68k@lists.linux-m68k.org, linux-mips@vger.kernel.org, linux-mm@kvack.org, linux-modules@vger.kernel.org, linux-openrisc@vger.kernel.org, linux-parisc@vger.kernel.org, linux-riscv@lists.infradead.org, linux-sh@vger.kernel.org, linux-snps-arc@lists.infradead.org, linux-trace-kernel@vger.kernel.org, linux-um@lists.infradead.org, linuxppc-dev@lists.ozlabs.org, loongarch@lists.linux.dev, sparclinux@vger.kernel.org, x86@kernel.org, Christoph Hellwig Subject: [PATCH v6 2/8] mm: vmalloc: don't account for number of nodes for HUGE_VMAP allocations Date: Wed, 16 Oct 2024 15:24:18 +0300 Message-ID: <20241016122424.1655560-3-rppt@kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20241016122424.1655560-1-rppt@kernel.org> References: <20241016122424.1655560-1-rppt@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20241016_052523_516949_85DAC47B X-CRM114-Status: GOOD ( 13.49 ) X-BeenThere: linux-um@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-um" Errors-To: linux-um-bounces+linux-um=archiver.kernel.org@lists.infradead.org From: "Mike Rapoport (Microsoft)" vmalloc allocations with VM_ALLOW_HUGE_VMAP that do not explicitly specify node ID will use huge pages only if size_per_node is larger than a huge page. Still the actual allocated memory is not distributed between nodes and there is no advantage in such approach. On the contrary, BPF allocates SZ_2M * num_possible_nodes() for each new bpf_prog_pack, while it could do with a single huge page per pack. Don't account for number of nodes for VM_ALLOW_HUGE_VMAP with NUMA_NO_NODE and use huge pages whenever the requested allocation size is larger than a huge page. Signed-off-by: Mike Rapoport (Microsoft) Reviewed-by: Christoph Hellwig --- mm/vmalloc.c | 9 ++------- 1 file changed, 2 insertions(+), 7 deletions(-) diff --git a/mm/vmalloc.c b/mm/vmalloc.c index 634162271c00..86b2344d7461 100644 --- a/mm/vmalloc.c +++ b/mm/vmalloc.c @@ -3763,8 +3763,6 @@ void *__vmalloc_node_range_noprof(unsigned long size, unsigned long align, } if (vmap_allow_huge && (vm_flags & VM_ALLOW_HUGE_VMAP)) { - unsigned long size_per_node; - /* * Try huge pages. Only try for PAGE_KERNEL allocations, * others like modules don't yet expect huge pages in @@ -3772,13 +3770,10 @@ void *__vmalloc_node_range_noprof(unsigned long size, unsigned long align, * supporting them. */ - size_per_node = size; - if (node == NUMA_NO_NODE) - size_per_node /= num_online_nodes(); - if (arch_vmap_pmd_supported(prot) && size_per_node >= PMD_SIZE) + if (arch_vmap_pmd_supported(prot) && size >= PMD_SIZE) shift = PMD_SHIFT; else - shift = arch_vmap_pte_supported_shift(size_per_node); + shift = arch_vmap_pte_supported_shift(size); align = max(real_align, 1UL << shift); size = ALIGN(real_size, 1UL << shift); -- 2.43.0