From patchwork Mon Oct 7 06:28:52 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mike Rapoport X-Patchwork-Id: 1993416 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20201202 header.b=OQrnWRR3; dkim-atps=neutral Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=lists.ozlabs.org (client-ip=112.213.38.117; helo=lists.ozlabs.org; envelope-from=linuxppc-dev+bounces-1786-incoming=patchwork.ozlabs.org@lists.ozlabs.org; receiver=patchwork.ozlabs.org) Received: from lists.ozlabs.org (lists.ozlabs.org [112.213.38.117]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (secp384r1) server-digest SHA384) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4XMTlq33Tgz1xsn for ; Mon, 7 Oct 2024 17:29:59 +1100 (AEDT) Received: from boromir.ozlabs.org (localhost [127.0.0.1]) by lists.ozlabs.org (Postfix) with ESMTP id 4XMTln4gPtz2yNB; Mon, 7 Oct 2024 17:29:57 +1100 (AEDT) X-Original-To: linuxppc-dev@lists.ozlabs.org Authentication-Results: lists.ozlabs.org; arc=none smtp.remote-ip=139.178.84.217 ARC-Seal: i=1; a=rsa-sha256; d=lists.ozlabs.org; s=201707; t=1728282597; cv=none; b=Y+ULyzQ9ZmnN37NPO5+TVhRq0fiXY22eo2vM42Dq5d4Z8JJ6kwTItcrTBBcR4wQpKKU0Hmc/5c4rMY4K5SRwwsUK4xNrwr3AFkku15iC1zgLwmnwTHaX0Xswc3I44I0Kpy66Oxsz25uLSJ5jEEZ2GcZKySCCDC3e4mHXsfajgBXOwsZE8LIhxSbr3TXv2H1qYUPF2x/ZlwVKaxzcrE47wA0SL+d4qbABw+CvipAMYA/omlzEXekNJBxKcieUfcPWLYD1taXOhVo9sJiuiZbKfw7M8JvLOF2GM75UNCdgltTu/38rv/0hbFdHBrdjZWyKqScu4S/utpsjq4ylnwVnRA== ARC-Message-Signature: i=1; a=rsa-sha256; d=lists.ozlabs.org; s=201707; t=1728282597; c=relaxed/relaxed; bh=VoDjrKHpUT224dnSitnnGFqJ2by/iZ5cZnUq7cIEdF4=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=dgjpNkxXDWlfoH1IvbnIVLeLvo02t+7rEtEw6cxoTEg0f5J7eVSKmnR9DjiFSQFIRhU6Z8zvQ50ArY+5qwvoXL575Zfg+LJ3G+9NeFf/oadXFk8i6+p+9bVedonPaknH1oVurPS/Ap5az9BfcC0nBT9e1Ov1irAnS3eghPoushC7gUC9O7XaCHV0hGIj+i2SyUJIIlvki/0oT0K3ltDpn3oP4s+0YtlQgPupsnxgrPSAe5BprdmiRyVujmfPQkuLjrGNCPgYFVhLxKw7kpNMepy88caszF05vjQC5+X/bTobVcEnh3NJRIdmI+qS1BiGbsoM18lSFodeVRYdLE0cSg== ARC-Authentication-Results: i=1; lists.ozlabs.org; dmarc=pass (p=quarantine dis=none) header.from=kernel.org; dkim=pass (2048-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20201202 header.b=OQrnWRR3; dkim-atps=neutral; spf=pass (client-ip=139.178.84.217; helo=dfw.source.kernel.org; envelope-from=rppt@kernel.org; receiver=lists.ozlabs.org) smtp.mailfrom=kernel.org Authentication-Results: lists.ozlabs.org; dmarc=pass (p=quarantine dis=none) header.from=kernel.org Authentication-Results: lists.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20201202 header.b=OQrnWRR3; dkim-atps=neutral Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=kernel.org (client-ip=139.178.84.217; helo=dfw.source.kernel.org; envelope-from=rppt@kernel.org; receiver=lists.ozlabs.org) Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4XMTlm3zszz2y71 for ; Mon, 7 Oct 2024 17:29:56 +1100 (AEDT) Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by dfw.source.kernel.org (Postfix) with ESMTP id 06EF05C59DC; Mon, 7 Oct 2024 06:29:50 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id EF2BFC4CEC6; Mon, 7 Oct 2024 06:29:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1728282594; bh=FFXSlSIenlvc/JFQhdQdJ8pK7321CYQcMdI24yMcjAo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=OQrnWRR3/g7hkdwqKSPCCpC6iFIYY/d292H/OkXvsUSIeBCbNT8KZSGMgs98muJ6O hStgp6uWL5I4mPNO24G+F+cFs8u7131j/Ey2uNjues5m4rGfIl+ezO5d7V6cyfXRrB ff1uz0i8ryxaYlWwqB3Tbk2Qfaen2IbD0G0cn3eSzNqjZHyYnCmEOJkRb1lVxqWFoq uXQrayzrXN+XpU2Oiz+opHfaOrJilIbQoWVWPrD++Zkr2uZPOk/qb3+N03ykByAfhN p1iJ7Mmzt/MjewEvg+nhLagLlQ4uD909oU6Ls/cTOKl5Oc1CSXLgqfomaexJDZ7MVY yRZGKqDqoDdLw== From: Mike Rapoport To: Andrew Morton 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" , 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 v4 2/8] mm: vmalloc: don't account for number of nodes for HUGE_VMAP allocations Date: Mon, 7 Oct 2024 09:28:52 +0300 Message-ID: <20241007062858.44248-3-rppt@kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20241007062858.44248-1-rppt@kernel.org> References: <20241007062858.44248-1-rppt@kernel.org> X-Mailing-List: linuxppc-dev@lists.ozlabs.org List-Id: List-Help: List-Post: List-Subscribe: , , List-Unsubscribe: MIME-Version: 1.0 X-Spam-Status: No, score=-5.3 required=5.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_HI,SPF_HELO_NONE, SPF_PASS autolearn=disabled version=4.0.0 X-Spam-Checker-Version: SpamAssassin 4.0.0 (2022-12-13) on lists.ozlabs.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 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);