From patchwork Thu Aug 1 06:08:19 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mike Rapoport X-Patchwork-Id: 13749774 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 A17DA1586C7; Thu, 1 Aug 2024 06:12:29 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1722492749; cv=none; b=d4lNatcfLMts12dPfduqwa5QavwcTK45YYK0nq1ge++CmudJssvnL994qmNlXh2lB97aPhTagVNyMJrhCu+LRg9Qpy21SQYBF1F9iGK3dtCKDasVkjxRp4bHTAAzRnG8y0THI09HSHDaI3BY4y/MJUryIX+h5E4UBn+r/eJm/+8= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1722492749; c=relaxed/simple; bh=nydmRjvUm2d1wafFnDPFYAA7CHVPdBf8ubFwxDVp0cs=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=uP2iceUbAF1hWyzK+ivcGKVKK4nzdbyksbhpGNle+ZubocGzG6S5/bOJcODvMdNPg85XtW9FXVwoXkOjCJEEIBSxksOQKiKrBoRT21mrsjFDhxewBFY3SBw8bxrIIg6X3aE0VeQYJo7l30n1Q1yhomauyuUl5CEHHJ2J+RTUkwo= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=L+wJRNZM; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="L+wJRNZM" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 76C5BC4AF0D; Thu, 1 Aug 2024 06:12:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1722492749; bh=nydmRjvUm2d1wafFnDPFYAA7CHVPdBf8ubFwxDVp0cs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=L+wJRNZMTgJr6I6+BoItXEqAuy+SLsAdRKGs6NjGUx4Qt4YJ1R0Lys5OD7cYUzvSO BOO0+AD+yKoq9/KU270Kleyml66/HiOyGPrjMzH9rllhP3WUyWkAPYYXB21YVdnJwT W5DKUVCmky0YMaTD9mZbhN0Yf2Pfp2PA6aiLhCA6EZNdBZ8pI/XFxWsKAtCbKw0pzC xykfAOcMCZwkqv9qvRJo44kWT5Acm5eTeHUbBiGS0S69GTh1zFhk6Dkh4reMVC+WQ2 0IQD6wa3uxShl0BUnXgFG1VYvj6HG3CyO3plcyprTh8TyPqlgAMs25SQRyUM0D7fbU eDYxJPB98EVSQ== From: Mike Rapoport To: linux-kernel@vger.kernel.org Cc: Alexander Gordeev , Andreas Larsson , Andrew Morton , Arnd Bergmann , Borislav Petkov , Catalin Marinas , Christophe Leroy , Dan Williams , Dave Hansen , David Hildenbrand , "David S. Miller" , Davidlohr Bueso , Greg Kroah-Hartman , Heiko Carstens , Huacai Chen , Ingo Molnar , Jiaxun Yang , John Paul Adrian Glaubitz , Jonathan Cameron , Jonathan Corbet , Michael Ellerman , Mike Rapoport , Palmer Dabbelt , "Rafael J. Wysocki" , Rob Herring , Samuel Holland , Thomas Bogendoerfer , Thomas Gleixner , Vasily Gorbik , Will Deacon , Zi Yan , devicetree@vger.kernel.org, linux-acpi@vger.kernel.org, linux-arch@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-cxl@vger.kernel.org, linux-doc@vger.kernel.org, linux-mips@vger.kernel.org, linux-mm@kvack.org, linux-riscv@lists.infradead.org, linux-s390@vger.kernel.org, linux-sh@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, loongarch@lists.linux.dev, nvdimm@lists.linux.dev, sparclinux@vger.kernel.org, x86@kernel.org Subject: [PATCH v3 19/26] mm: introduce numa_emulation Date: Thu, 1 Aug 2024 09:08:19 +0300 Message-ID: <20240801060826.559858-20-rppt@kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240801060826.559858-1-rppt@kernel.org> References: <20240801060826.559858-1-rppt@kernel.org> Precedence: bulk X-Mailing-List: linux-sh@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: "Mike Rapoport (Microsoft)" Move numa_emulation codfrom arch/x86 to mm/numa_emulation.c This code will be later reused by arch_numa. No functional changes. Signed-off-by: Mike Rapoport (Microsoft) Tested-by: Zi Yan # for x86_64 and arm64 Reviewed-by: Jonathan Cameron Tested-by: Jonathan Cameron --- arch/x86/Kconfig | 8 -------- arch/x86/include/asm/numa.h | 12 ------------ arch/x86/mm/Makefile | 1 - arch/x86/mm/numa_internal.h | 11 ----------- include/linux/numa_memblks.h | 17 +++++++++++++++++ mm/Kconfig | 8 ++++++++ mm/Makefile | 1 + {arch/x86/mm => mm}/numa_emulation.c | 4 +--- 8 files changed, 27 insertions(+), 35 deletions(-) rename {arch/x86/mm => mm}/numa_emulation.c (99%) diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 74afb59c6603..acd9745bf2ae 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -1600,14 +1600,6 @@ config X86_64_ACPI_NUMA help Enable ACPI SRAT based node topology detection. -config NUMA_EMU - bool "NUMA emulation" - depends on NUMA - help - Enable NUMA emulation. A flat machine will be split - into virtual nodes when booted with "numa=fake=N", where N is the - number of nodes. This is only useful for debugging. - config NODES_SHIFT int "Maximum NUMA Nodes (as a power of 2)" if !MAXSMP range 1 10 diff --git a/arch/x86/include/asm/numa.h b/arch/x86/include/asm/numa.h index 203100500f24..5469d7a7c40f 100644 --- a/arch/x86/include/asm/numa.h +++ b/arch/x86/include/asm/numa.h @@ -65,16 +65,4 @@ static inline void init_gi_nodes(void) { } void debug_cpumask_set_cpu(unsigned int cpu, int node, bool enable); #endif -#ifdef CONFIG_NUMA_EMU -int numa_emu_cmdline(char *str); -void __init numa_emu_update_cpu_to_node(int *emu_nid_to_phys, - unsigned int nr_emu_nids); -u64 __init numa_emu_dma_end(void); -#else /* CONFIG_NUMA_EMU */ -static inline int numa_emu_cmdline(char *str) -{ - return -EINVAL; -} -#endif /* CONFIG_NUMA_EMU */ - #endif /* _ASM_X86_NUMA_H */ diff --git a/arch/x86/mm/Makefile b/arch/x86/mm/Makefile index 8d3a00e5c528..690fbf48e853 100644 --- a/arch/x86/mm/Makefile +++ b/arch/x86/mm/Makefile @@ -57,7 +57,6 @@ obj-$(CONFIG_MMIOTRACE_TEST) += testmmiotrace.o obj-$(CONFIG_NUMA) += numa.o numa_$(BITS).o obj-$(CONFIG_AMD_NUMA) += amdtopology.o obj-$(CONFIG_ACPI_NUMA) += srat.o -obj-$(CONFIG_NUMA_EMU) += numa_emulation.o obj-$(CONFIG_X86_INTEL_MEMORY_PROTECTION_KEYS) += pkeys.o obj-$(CONFIG_RANDOMIZE_MEMORY) += kaslr.o diff --git a/arch/x86/mm/numa_internal.h b/arch/x86/mm/numa_internal.h index 249e3aaeadce..11e1ff370c10 100644 --- a/arch/x86/mm/numa_internal.h +++ b/arch/x86/mm/numa_internal.h @@ -7,15 +7,4 @@ void __init x86_numa_init(void); -struct numa_meminfo; - -#ifdef CONFIG_NUMA_EMU -void __init numa_emulation(struct numa_meminfo *numa_meminfo, - int numa_dist_cnt); -#else -static inline void numa_emulation(struct numa_meminfo *numa_meminfo, - int numa_dist_cnt) -{ } -#endif - #endif /* __X86_MM_NUMA_INTERNAL_H */ diff --git a/include/linux/numa_memblks.h b/include/linux/numa_memblks.h index 968a590535ac..f81f98678074 100644 --- a/include/linux/numa_memblks.h +++ b/include/linux/numa_memblks.h @@ -34,6 +34,23 @@ int __init numa_register_meminfo(struct numa_meminfo *mi); void __init numa_nodemask_from_meminfo(nodemask_t *nodemask, const struct numa_meminfo *mi); +#ifdef CONFIG_NUMA_EMU +int numa_emu_cmdline(char *str); +void __init numa_emu_update_cpu_to_node(int *emu_nid_to_phys, + unsigned int nr_emu_nids); +u64 __init numa_emu_dma_end(void); +void __init numa_emulation(struct numa_meminfo *numa_meminfo, + int numa_dist_cnt); +#else +static inline void numa_emulation(struct numa_meminfo *numa_meminfo, + int numa_dist_cnt) +{ } +static inline int numa_emu_cmdline(char *str) +{ + return -EINVAL; +} +#endif /* CONFIG_NUMA_EMU */ + #endif /* CONFIG_NUMA_MEMBLKS */ #endif /* __NUMA_MEMBLKS_H */ diff --git a/mm/Kconfig b/mm/Kconfig index dc5912d29ed5..3b466df1d9e2 100644 --- a/mm/Kconfig +++ b/mm/Kconfig @@ -1266,6 +1266,14 @@ config EXECMEM config NUMA_MEMBLKS bool +config NUMA_EMU + bool "NUMA emulation" + depends on NUMA_MEMBLKS + help + Enable NUMA emulation. A flat machine will be split + into virtual nodes when booted with "numa=fake=N", where N is the + number of nodes. This is only useful for debugging. + source "mm/damon/Kconfig" endmenu diff --git a/mm/Makefile b/mm/Makefile index e3fac7efd880..75a189cc67ef 100644 --- a/mm/Makefile +++ b/mm/Makefile @@ -143,3 +143,4 @@ obj-$(CONFIG_SHRINKER_DEBUG) += shrinker_debug.o obj-$(CONFIG_EXECMEM) += execmem.o obj-$(CONFIG_NUMA) += numa.o obj-$(CONFIG_NUMA_MEMBLKS) += numa_memblks.o +obj-$(CONFIG_NUMA_EMU) += numa_emulation.o diff --git a/arch/x86/mm/numa_emulation.c b/mm/numa_emulation.c similarity index 99% rename from arch/x86/mm/numa_emulation.c rename to mm/numa_emulation.c index 33610026b7a3..031fb9961bf7 100644 --- a/arch/x86/mm/numa_emulation.c +++ b/mm/numa_emulation.c @@ -7,9 +7,7 @@ #include #include #include -#include - -#include "numa_internal.h" +#include #define FAKE_NODE_MIN_SIZE ((u64)32 << 20) #define FAKE_NODE_MIN_HASH_MASK (~(FAKE_NODE_MIN_SIZE - 1UL))