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2025 04:14:22 +0000 Date: Tue, 8 Apr 2025 21:14:18 -0700 From: Dan Williams To: Yuquan Wang , Dan Williams CC: kernel test robot , , , , , , , , , , , , , , , , , , , Subject: Re: [PATCH v2] mm: numa_memblks: introduce numa_add_reserved_memblk Message-ID: <67f5f41ae7a87_720529463@dwillia2-xfh.jf.intel.com.notmuch> References: <20250328092132.2695299-1-wangyuquan1236@phytium.com.cn> <202503282026.QNaOAK79-lkp@intel.com> <67eef72411bec_464ec29434@dwillia2-xfh.jf.intel.com.notmuch> <54b74f06.68e1.19618bc860e.Coremail.wangyuquan1236@phytium.com.cn> Content-Type: text/plain; charset="us-ascii" Content-Disposition: inline In-Reply-To: <54b74f06.68e1.19618bc860e.Coremail.wangyuquan1236@phytium.com.cn> X-ClientProxiedBy: MW4PR03CA0191.namprd03.prod.outlook.com (2603:10b6:303:b8::16) To PH8PR11MB8107.namprd11.prod.outlook.com (2603:10b6:510:256::6) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: PH8PR11MB8107:EE_|DS0PR11MB6496:EE_ 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 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Yuquan Wang wrote: > > > [add loongarch folks, cc linux-cxl ] > > > > kernel test robot wrote: > > > Hi Yuquan, > > > > > > kernel test robot noticed the following build errors: > > > > > > [auto build test ERROR on akpm-mm/mm-everything] > > > > > > url: https://github.com/intel-lab-lkp/linux/commits/Yuquan-Wang/mm-numa_memblks-introduce-numa_add_reserved_memblk/20250328-172428 > > > base: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything > > > patch link: https://lore.kernel.org/r/20250328092132.2695299-1-wangyuquan1236%40phytium.com.cn > > > patch subject: [PATCH v2] mm: numa_memblks: introduce numa_add_reserved_memblk > > > config: loongarch-randconfig-002-20250328 (https://download.01.org/0day-ci/archive/20250328/202503282026.QNaOAK79-lkp@intel.com/config) > > > compiler: loongarch64-linux-gcc (GCC) 14.2.0 > > > reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250328/202503282026.QNaOAK79-lkp@intel.com/reproduce) > > > > > > If you fix the issue in a separate patch/commit (i.e. not just a new version of > > > the same patch/commit), kindly add following tags > > > | Reported-by: kernel test robot > > > | Closes: https://lore.kernel.org/oe-kbuild-all/202503282026.QNaOAK79-lkp@intel.com/ > > > > > > All errors (new ones prefixed by >>): > > > > > > In file included from include/linux/build_bug.h:5, > > > from include/linux/container_of.h:5, > > > from include/linux/list.h:5, > > > from include/linux/module.h:12, > > > from drivers/acpi/numa/srat.c:10: > > > drivers/acpi/numa/srat.c: In function 'acpi_parse_cfmws': > > > >> drivers/acpi/numa/srat.c:461:13: error: implicit declaration of function 'numa_add_reserved_memblk' [-Wimplicit-function-declaration] > > > 461 | if (numa_add_reserved_memblk(node, start, end) < 0) { > > > | ^~~~~~~~~~~~~~~~~~~~~~~~ > > > > So it looks like loongarch was left out of the numa_memblks conversion: > > 87482708210f ("mm: introduce numa_memblks") > > > > I think the update needed is something like this (untested): > > > > diff --git a/arch/loongarch/Kconfig b/arch/loongarch/Kconfig > > index 2b8bd27a852f..cac16c827159 100644 > > --- a/arch/loongarch/Kconfig > > +++ b/arch/loongarch/Kconfig > > @@ -183,6 +183,7 @@ config LOONGARCH > > select MODULES_USE_ELF_RELA if MODULES > > select NEED_PER_CPU_EMBED_FIRST_CHUNK > > select NEED_PER_CPU_PAGE_FIRST_CHUNK > > + select NUMA_MEMBLKS > > select OF > > select OF_EARLY_FLATTREE > > select PCI > > diff --git a/arch/loongarch/include/asm/numa.h b/arch/loongarch/include/asm/numa.h > > index b5f9de9f102e..bbf9f70bd25f 100644 > > --- a/arch/loongarch/include/asm/numa.h > > +++ b/arch/loongarch/include/asm/numa.h > > @@ -22,20 +22,6 @@ extern int numa_off; > > extern s16 __cpuid_to_node[CONFIG_NR_CPUS]; > > extern nodemask_t numa_nodes_parsed __initdata; > > > > -struct numa_memblk { > > - u64 start; > > - u64 end; > > - int nid; > > -}; > > - > > -#define NR_NODE_MEMBLKS (MAX_NUMNODES*2) > > -struct numa_meminfo { > > - int nr_blks; > > - struct numa_memblk blk[NR_NODE_MEMBLKS]; > > -}; > > - > > -extern int __init numa_add_memblk(int nodeid, u64 start, u64 end); > > - > > extern void __init early_numa_add_cpu(int cpuid, s16 node); > > extern void numa_add_cpu(unsigned int cpu); > > extern void numa_remove_cpu(unsigned int cpu); > > diff --git a/arch/loongarch/kernel/numa.c b/arch/loongarch/kernel/numa.c > > index 84fe7f854820..57b21082e893 100644 > > --- a/arch/loongarch/kernel/numa.c > > +++ b/arch/loongarch/kernel/numa.c > > @@ -18,6 +18,7 @@ > > #include > > #include > > #include > > +#include > > #include > > #include > > #include > > > > Could someone from the loongarch side propose the fixups needed here so > > Yuquan can land this patch? > > Hi, Dan > > Should I wait for Loongarch folks's replies or draft a new patch for Loongarch > to introduce numa_memblks according to your suggested code? I would say go ahead and introduce the suggested changes. I think the risk is low that copying what is done for numa_add_memblk() will break something, and they can always jump in to fix that up if the worst case happens.