From patchwork Mon Sep 9 06:47:24 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mike Rapoport X-Patchwork-Id: 13796008 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 EFC60ECE57B for ; Mon, 9 Sep 2024 06:49:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=8r9eSkgb6Fxd3uEorLuqLx0zDh08wzGjEw5xAPLAPbs=; b=Lo8Ge3o9Bx6qCE ibwgIWnarxoOVMLVh3K6TEqDJS+LtI7RigkFyoY3Wgp+6kkJNjaMc55UVLUgcS3nUpTEc7qVNObQr Bi6tD10a+0sIn2VBaXkduKOUcgJxTlGeiEBQMJQSY9KRSnCFF5LB9KQhfrsSVRoi7qCwNj60rKhFn czqZmYA0cCurr1t0zJF1QiyKy0zHXSqz685QV4AYH1me6674pwmlbSptNBZXWpFxBpFNwuwl4BVMe ABH4/a8z+NemCuPiiNtla48HPQTqpuZkoZ73txXl86uchZarBfTdlHCp9zaDN0zYW6BmLNzPvh4CM MKlBbo/mhEgs/Uh4bk9A==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1snYDl-00000000gZT-03C7; Mon, 09 Sep 2024 06:49:57 +0000 Received: from nyc.source.kernel.org ([147.75.193.91]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1snYCJ-00000000fqF-2EQe; Mon, 09 Sep 2024 06:48:29 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by nyc.source.kernel.org (Postfix) with ESMTP id 60485A42722; Mon, 9 Sep 2024 06:48:18 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id CFF6CC4CECE; Mon, 9 Sep 2024 06:48:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1725864505; bh=diG+Fv3wDftGRjrnWBdO8lGUovRExvU5pHk1HsKnyW0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=PYI0f7XXtb9IXPNGiea/h4fGD99CF60HMjieaexM2yoL8zPpSzdFJvOzXcPM4ZbW+ qW1DYS4dRYAl9aSVOznmi4EFI2YlU8K2WiL8DUJlTfcjmi8tmSSZvhRqpII5qUqDgF ByEKU1W4ipty5gGX3a0TnMk4aQWv/199I8KqIfZbMMpuWvdU9erJQljQ2oBiAX1G6f kDiZQKFgamrltHXyLuUJb54e2pwXGqtqjb8p9DIQ+kHnakm7bY5jN/JvrwXzm8g1/m oXBQM/zWx+TDu4QNrUJ9GPMzxJHJFfbGHnKF76P9WbIutT29m8MSW6aLdsPfJU0Ojk ej4bByKdSLxyw== From: Mike Rapoport To: Andrew Morton Cc: Andreas Larsson , Andy Lutomirski , 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" , Luis Chamberlain , 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 , 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 Subject: [PATCH v3 2/8] mm: vmalloc: don't account for number of nodes for HUGE_VMAP allocations Date: Mon, 9 Sep 2024 09:47:24 +0300 Message-ID: <20240909064730.3290724-3-rppt@kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240909064730.3290724-1-rppt@kernel.org> References: <20240909064730.3290724-1-rppt@kernel.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240908_234827_709213_CC895FC0 X-CRM114-Status: GOOD ( 13.18 ) X-BeenThere: linux-riscv@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-riscv" Errors-To: linux-riscv-bounces+linux-riscv=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) --- mm/vmalloc.c | 9 ++------- 1 file changed, 2 insertions(+), 7 deletions(-) diff --git a/mm/vmalloc.c b/mm/vmalloc.c index af2de36549d6..d0fbe6b2b73c 100644 --- a/mm/vmalloc.c +++ b/mm/vmalloc.c @@ -3769,8 +3769,6 @@ 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 @@ -3778,13 +3776,10 @@ 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);