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Date: Thu, 24 Feb 2022 09:16:58 +0800 From: kernel test robot <lkp@...el.com> To: Ingo Molnar <mingo@...nel.org> Cc: kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org Subject: [mingo-tip:sched/headers 2170/2340] arch/x86/pci/bus_numa.c:24:5: warning: no previous prototype for 'x86_pci_root_bus_node' tree: git://git.kernel.org/pub/scm/linux/kernel/git/mingo/tip.git sched/headers head: 97c5eeb4de3ad324ed2a4656b46465299cfd010a commit: d1464f1f51594b5388839a7fd0f4701ff84c3092 [2170/2340] headers/deps: pci: Optimize <linux/pci.h> dependencies, remove <linux/topology.h> inclusion config: i386-randconfig-a003 (https://download.01.org/0day-ci/archive/20220224/202202240933.QRPHsCZw-lkp@intel.com/config) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce (this is a W=1 build): # https://git.kernel.org/pub/scm/linux/kernel/git/mingo/tip.git/commit/?id=d1464f1f51594b5388839a7fd0f4701ff84c3092 git remote add mingo-tip git://git.kernel.org/pub/scm/linux/kernel/git/mingo/tip.git git fetch --no-tags mingo-tip sched/headers git checkout d1464f1f51594b5388839a7fd0f4701ff84c3092 # save the config file to linux build tree mkdir build_dir make W=1 O=build_dir ARCH=i386 SHELL=/bin/bash If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@...el.com> All warnings (new ones prefixed by >>): >> arch/x86/pci/bus_numa.c:24:5: warning: no previous prototype for 'x86_pci_root_bus_node' [-Wmissing-prototypes] 24 | int x86_pci_root_bus_node(int bus) | ^~~~~~~~~~~~~~~~~~~~~ >> arch/x86/pci/bus_numa.c:34:6: warning: no previous prototype for 'x86_pci_root_bus_resources' [-Wmissing-prototypes] 34 | void x86_pci_root_bus_resources(int bus, struct list_head *resources) | ^~~~~~~~~~~~~~~~~~~~~~~~~~ vim +/x86_pci_root_bus_node +24 arch/x86/pci/bus_numa.c 67f241f4579651 Yinghai Lu 2009-11-11 23 afcf21c2beca66 Bjorn Helgaas 2014-01-24 @24 int x86_pci_root_bus_node(int bus) afcf21c2beca66 Bjorn Helgaas 2014-01-24 25 { afcf21c2beca66 Bjorn Helgaas 2014-01-24 26 struct pci_root_info *info = x86_find_pci_root_info(bus); afcf21c2beca66 Bjorn Helgaas 2014-01-24 27 afcf21c2beca66 Bjorn Helgaas 2014-01-24 28 if (!info) afcf21c2beca66 Bjorn Helgaas 2014-01-24 29 return NUMA_NO_NODE; afcf21c2beca66 Bjorn Helgaas 2014-01-24 30 afcf21c2beca66 Bjorn Helgaas 2014-01-24 31 return info->node; afcf21c2beca66 Bjorn Helgaas 2014-01-24 32 } afcf21c2beca66 Bjorn Helgaas 2014-01-24 33 d28e5ac2a07e27 Yinghai Lu 2012-04-02 @34 void x86_pci_root_bus_resources(int bus, struct list_head *resources) d28e5ac2a07e27 Yinghai Lu 2012-04-02 35 { d28e5ac2a07e27 Yinghai Lu 2012-04-02 36 struct pci_root_info *info = x86_find_pci_root_info(bus); d28e5ac2a07e27 Yinghai Lu 2012-04-02 37 struct pci_root_res *root_res; 14d76b68f2819a Jiang Liu 2015-02-05 38 struct resource_entry *window; a10bb128b64fe0 Yinghai Lu 2012-05-17 39 bool found = false; d28e5ac2a07e27 Yinghai Lu 2012-04-02 40 d28e5ac2a07e27 Yinghai Lu 2012-04-02 41 if (!info) 2cd6975a4ff92a Bjorn Helgaas 2011-10-28 42 goto default_resources; 67f241f4579651 Yinghai Lu 2009-11-11 43 2cd6975a4ff92a Bjorn Helgaas 2011-10-28 44 printk(KERN_DEBUG "PCI: root bus %02x: hardware-probed resources\n", 2cd6975a4ff92a Bjorn Helgaas 2011-10-28 45 bus); 67f241f4579651 Yinghai Lu 2009-11-11 46 a10bb128b64fe0 Yinghai Lu 2012-05-17 47 /* already added by acpi ? */ 14d76b68f2819a Jiang Liu 2015-02-05 48 resource_list_for_each_entry(window, resources) a10bb128b64fe0 Yinghai Lu 2012-05-17 49 if (window->res->flags & IORESOURCE_BUS) { a10bb128b64fe0 Yinghai Lu 2012-05-17 50 found = true; a10bb128b64fe0 Yinghai Lu 2012-05-17 51 break; a10bb128b64fe0 Yinghai Lu 2012-05-17 52 } a10bb128b64fe0 Yinghai Lu 2012-05-17 53 a10bb128b64fe0 Yinghai Lu 2012-05-17 54 if (!found) a10bb128b64fe0 Yinghai Lu 2012-05-17 55 pci_add_resource(resources, &info->busn); a10bb128b64fe0 Yinghai Lu 2012-05-17 56 727ae8be30b428 Liu Jiang 2015-11-27 57 list_for_each_entry(root_res, &info->resources, list) 727ae8be30b428 Liu Jiang 2015-11-27 58 pci_add_resource(resources, &root_res->res); 727ae8be30b428 Liu Jiang 2015-11-27 59 2cd6975a4ff92a Bjorn Helgaas 2011-10-28 60 return; 2cd6975a4ff92a Bjorn Helgaas 2011-10-28 61 2cd6975a4ff92a Bjorn Helgaas 2011-10-28 62 default_resources: 2cd6975a4ff92a Bjorn Helgaas 2011-10-28 63 /* 2cd6975a4ff92a Bjorn Helgaas 2011-10-28 64 * We don't have any host bridge aperture information from the 2cd6975a4ff92a Bjorn Helgaas 2011-10-28 65 * "native host bridge drivers," e.g., amd_bus or broadcom_bus, 2cd6975a4ff92a Bjorn Helgaas 2011-10-28 66 * so fall back to the defaults historically used by pci_create_bus(). 2cd6975a4ff92a Bjorn Helgaas 2011-10-28 67 */ 2cd6975a4ff92a Bjorn Helgaas 2011-10-28 68 printk(KERN_DEBUG "PCI: root bus %02x: using default resources\n", bus); 2cd6975a4ff92a Bjorn Helgaas 2011-10-28 69 pci_add_resource(resources, &ioport_resource); 2cd6975a4ff92a Bjorn Helgaas 2011-10-28 70 pci_add_resource(resources, &iomem_resource); 67f241f4579651 Yinghai Lu 2009-11-11 71 } 67f241f4579651 Yinghai Lu 2009-11-11 72 :::::: The code at line 24 was first introduced by commit :::::: afcf21c2beca6604dbdc24fed1624c2499a85e7d x86/PCI: Add x86_pci_root_bus_node() to look up NUMA node from PCI bus :::::: TO: Bjorn Helgaas <bhelgaas@...gle.com> :::::: CC: Bjorn Helgaas <bhelgaas@...gle.com> --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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