summaryrefslogtreecommitdiff
path: root/arch/x86/pci/bus_numa.c
AgeCommit message (Collapse)AuthorFilesLines
2017-11-02License cleanup: add SPDX GPL-2.0 license identifier to files with no licenseGreg Kroah-Hartman1-0/+1
Many source files in the tree are missing licensing information, which makes it harder for compliance tools to determine the correct license. By default all files without license information are under the default license of the kernel, which is GPL version 2. Update the files which contain no license information with the 'GPL-2.0' SPDX license identifier. The SPDX identifier is a legally binding shorthand, which can be used instead of the full boiler plate text. This patch is based on work done by Thomas Gleixner and Kate Stewart and Philippe Ombredanne. How this work was done: Patches were generated and checked against linux-4.14-rc6 for a subset of the use cases: - file had no licensing information it it. - file was a */uapi/* one with no licensing information in it, - file was a */uapi/* one with existing licensing information, Further patches will be generated in subsequent months to fix up cases where non-standard license headers were used, and references to license had to be inferred by heuristics based on keywords. The analysis to determine which SPDX License Identifier to be applied to a file was done in a spreadsheet of side by side results from of the output of two independent scanners (ScanCode & Windriver) producing SPDX tag:value files created by Philippe Ombredanne. Philippe prepared the base worksheet, and did an initial spot review of a few 1000 files. The 4.13 kernel was the starting point of the analysis with 60,537 files assessed. Kate Stewart did a file by file comparison of the scanner results in the spreadsheet to determine which SPDX license identifier(s) to be applied to the file. She confirmed any determination that was not immediately clear with lawyers working with the Linux Foundation. Criteria used to select files for SPDX license identifier tagging was: - Files considered eligible had to be source code files. - Make and config files were included as candidates if they contained >5 lines of source - File already had some variant of a license header in it (even if <5 lines). All documentation files were explicitly excluded. The following heuristics were used to determine which SPDX license identifiers to apply. - when both scanners couldn't find any license traces, file was considered to have no license information in it, and the top level COPYING file license applied. For non */uapi/* files that summary was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 11139 and resulted in the first patch in this series. If that file was a */uapi/* path one, it was "GPL-2.0 WITH Linux-syscall-note" otherwise it was "GPL-2.0". Results of that was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 WITH Linux-syscall-note 930 and resulted in the second patch in this series. - if a file had some form of licensing information in it, and was one of the */uapi/* ones, it was denoted with the Linux-syscall-note if any GPL family license was found in the file or had no licensing in it (per prior point). Results summary: SPDX license identifier # files ---------------------------------------------------|------ GPL-2.0 WITH Linux-syscall-note 270 GPL-2.0+ WITH Linux-syscall-note 169 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause) 21 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) 17 LGPL-2.1+ WITH Linux-syscall-note 15 GPL-1.0+ WITH Linux-syscall-note 14 ((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause) 5 LGPL-2.0+ WITH Linux-syscall-note 4 LGPL-2.1 WITH Linux-syscall-note 3 ((GPL-2.0 WITH Linux-syscall-note) OR MIT) 3 ((GPL-2.0 WITH Linux-syscall-note) AND MIT) 1 and that resulted in the third patch in this series. - when the two scanners agreed on the detected license(s), that became the concluded license(s). - when there was disagreement between the two scanners (one detected a license but the other didn't, or they both detected different licenses) a manual inspection of the file occurred. - In most cases a manual inspection of the information in the file resulted in a clear resolution of the license that should apply (and which scanner probably needed to revisit its heuristics). - When it was not immediately clear, the license identifier was confirmed with lawyers working with the Linux Foundation. - If there was any question as to the appropriate license identifier, the file was flagged for further research and to be revisited later in time. In total, over 70 hours of logged manual review was done on the spreadsheet to determine the SPDX license identifiers to apply to the source files by Kate, Philippe, Thomas and, in some cases, confirmation by lawyers working with the Linux Foundation. Kate also obtained a third independent scan of the 4.13 code base from FOSSology, and compared selected files where the other two scanners disagreed against that SPDX file, to see if there was new insights. The Windriver scanner is based on an older version of FOSSology in part, so they are related. Thomas did random spot checks in about 500 files from the spreadsheets for the uapi headers and agreed with SPDX license identifier in the files he inspected. For the non-uapi files Thomas did random spot checks in about 15000 files. In initial set of patches against 4.14-rc6, 3 files were found to have copy/paste license identifier errors, and have been fixed to reflect the correct identifier. Additionally Philippe spent 10 hours this week doing a detailed manual inspection and review of the 12,461 patched files from the initial patch version early this week with: - a full scancode scan run, collecting the matched texts, detected license ids and scores - reviewing anything where there was a license detected (about 500+ files) to ensure that the applied SPDX license was correct - reviewing anything where there was no detection but the patch license was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied SPDX license was correct This produced a worksheet with 20 files needing minor correction. This worksheet was then exported into 3 different .csv files for the different types of files to be modified. These .csv files were then reviewed by Greg. Thomas wrote a script to parse the csv files and add the proper SPDX tag to the file, in the format that the file expected. This script was further refined by Greg based on the output to detect more types of files automatically and to distinguish between header and source .c files (which need different comment types.) Finally Greg ran the script using the .csv files to generate the patches. Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-12-02x86/PCI/ACPI: Fix regression caused by commit 4d6b4e69a245Liu Jiang1-11/+2
Commit 4d6b4e69a245 ("x86/PCI/ACPI: Use common interface to support PCI host bridge") converted x86 to use the common interface acpi_pci_root_create, but the conversion missed on code piece in arch/x86/pci/bus_numa.c, which causes regression on some legacy AMD platforms as reported by Arthur Marsh <arthur.marsh@internode.on.net>. The root causes is that acpi_pci_root_create() fails to insert host bridge resources into iomem_resource/ioport_resource because x86_pci_root_bus_resources() has already inserted those resources. So change x86_pci_root_bus_resources() to not insert resources into iomem_resource/ioport_resource. Fixes: 4d6b4e69a245 ("x86/PCI/ACPI: Use common interface to support PCI host bridge") Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com> Reported-and-tested-by: Arthur Marsh <arthur.marsh@internode.on.net> Reported-and-tested-by: Krzysztof Kolasa <kkolasa@winsoft.pl> Reported-and-tested-by: Keith Busch <keith.busch@intel.com> Reported-and-tested-by: Hans de Bruin <jmdebruin@xmsnet.nl> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2015-02-05PCI: Use common resource list management code instead of private implementationJiang Liu1-2/+2
Use common resource list management data structure and interfaces instead of private implementation. Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com> Acked-by: Will Deacon <will.deacon@arm.com> Acked-by: Bjorn Helgaas <bhelgaas@google.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-02-03x86/PCI: Remove unnecessary list_empty(&pci_root_infos) checkBjorn Helgaas1-3/+0
list_for_each_entry() handles empty lists, so there's no need to check whether the list is empty first. Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-02-03x86/PCI: Add x86_pci_root_bus_node() to look up NUMA node from PCI busBjorn Helgaas1-0/+10
The AMD early_fill_mp_bus_info() already allocates a struct pci_root_info for each PCI host bridge it finds, and that structure contains the NUMA node number. We don't need to keep the same information in the mp_bus_to_node[] table. This adds x86_pci_root_bus_node(), which returns the NUMA node number, or NUMA_NO_NODE if the node is unknown. Note that unlike get_mp_bus_to_node(), x86_pci_root_bus_node() only works for root buses. For example, if amd_bus.c finds a host bridge on node 1 to [bus 00-0f], get_mp_bus_to_node() returns 1 for any bus between 00 and 0f, but x86_pci_root_bus_node() returns 1 for bus 00 and NUMA_NO_NODE for buses 01-0f. Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-01-04X86: drivers: remove __dev* attributes.Greg Kroah-Hartman1-2/+2
CONFIG_HOTPLUG is going away as an option. As a result, the __dev* markings need to be removed. This change removes the use of __devinit, __devexit_p, __devinitconst, and __devexit from these drivers. Based on patches originally written by Bill Pemberton, but redone by me in order to handle some of the coding style issues better, by hand. Cc: Bill Pemberton <wfp5p@virginia.edu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Daniel Drake <dsd@laptop.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-06-14x86/PCI: put busn resource in pci_root_info for native host bridge driversYinghai Lu1-3/+19
Add the host bridge bus number aperture to the resource list. Like the MMIO and I/O port apertures, this will be used when assigning resources to hot-added devices or in the case of conflicts. [bhelgaas: changelog, tidy printk] Signed-off-by: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2012-05-01x86/PCI: dynamically allocate pci_root_info for native host bridge driversYinghai Lu1-22/+47
This dynamically allocates struct pci_root_info instead of using a static array. Signed-off-by: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2012-01-07x86/PCI: convert to pci_create_root_bus() and pci_scan_root_bus()Bjorn Helgaas1-13/+18
x86 has two kinds of PCI root bus scanning: (1) ACPI-based, using _CRS resources. This used pci_create_bus(), not pci_scan_bus(), because ACPI hotplug needed to split the pci_bus_add_devices() into a separate host bridge .start() method. This patch parses the _CRS resources earlier, so we can build a list of resources and pass it to pci_create_root_bus(). Note that as before, we parse the _CRS even if we aren't going to use it so we can print it for debugging purposes. (2) All other, which used either default resources (ioport_resource and iomem_resource) or information read from the hardware via amd_bus.c or similar. This used pci_scan_bus(). This patch converts x86_pci_root_bus_res_quirks() (previously called from pcibios_fixup_bus()) to x86_pci_root_bus_resources(), which builds a list of resources before we call pci_scan_root_bus(). We also use x86_pci_root_bus_resources() if we have ACPI but are ignoring _CRS. CC: Yinghai Lu <yinghai.lu@oracle.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2010-03-03Merge branch 'x86-bootmem-for-linus' of ↵Linus Torvalds1-13/+12
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'x86-bootmem-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (30 commits) early_res: Need to save the allocation name in drop_range_partial() sparsemem: Fix compilation on PowerPC early_res: Add free_early_partial() x86: Fix non-bootmem compilation on PowerPC core: Move early_res from arch/x86 to kernel/ x86: Add find_fw_memmap_area Move round_up/down to kernel.h x86: Make 32bit support NO_BOOTMEM early_res: Enhance check_and_double_early_res x86: Move back find_e820_area to e820.c x86: Add find_early_area_size x86: Separate early_res related code from e820.c x86: Move bios page reserve early to head32/64.c sparsemem: Put mem map for one node together. sparsemem: Put usemap for one node together x86: Make 64 bit use early_res instead of bootmem before slab x86: Only call dma32_reserve_bootmem 64bit !CONFIG_NUMA x86: Make early_node_mem get mem > 4 GB if possible x86: Dynamically increase early_res array size x86: Introduce max_early_res and early_res_count ...
2010-02-23PCI: augment bus resource table with a listBjorn Helgaas1-1/+2
Previously we used a table of size PCI_BUS_NUM_RESOURCES (16) for resources forwarded to a bus by its upstream bridge. We've increased this size several times when the table overflowed. But there's no good limit on the number of resources because host bridges and subtractive decode bridges can forward any number of ranges to their secondary buses. This patch reduces the table to only PCI_BRIDGE_RESOURCE_NUM (4) entries, which corresponds to the number of windows a PCI-to-PCI (3) or CardBus (4) bridge can positively decode. Any additional resources, e.g., PCI host bridge windows or subtractively-decoded regions, are kept in a list. I'd prefer a single list rather than this split table/list approach, but that requires simultaneous changes to every architecture. This approach only requires immediate changes where we set up (a) host bridges with more than four windows and (b) subtractive-decode P2P bridges, and we can incrementally change other architectures to use the list. Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2010-02-11x86/pci: Add cap_resource()Yinghai Lu1-0/+4
Prepare for 32bit pci root bus -v2: hpa said we should compare with (resource_size_t)~0 -v3: according to Linus to use MAX_RESOURCE instead. also need need to put related patches together -v4: according to Andrew, use min in cap_resource() Signed-off-by: Yinghai Lu <yinghai@kernel.org> LKML-Reference: <1265793639-15071-8-git-send-email-yinghai@kernel.org> Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2010-02-11x86/pci: AMD one chain system to use pci read out resYinghai Lu1-5/+0
Found MSI amd k8 based laptops is hiding [0x70000000, 0x80000000) RAM from e820. enable amd one chain even for all. -v2: use bool for found, according to Andrew Signed-off-by: Yinghai Lu <yinghai@kernel.org> LKML-Reference: <1265793639-15071-6-git-send-email-yinghai@kernel.org> Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2010-02-11x86/pci: Use resource_size_t in update_resYinghai Lu1-8/+8
Prepare to enable 32bit intel and amd bus. Signed-off-by: Yinghai Lu <yinghai@kernel.org> LKML-Reference: <1265793639-15071-5-git-send-email-yinghai@kernel.org> Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2009-12-17PCI: fix section mismatch on update_res()Jiri Slaby1-1/+1
Remark update_res from __init to __devinit as it is called also from __devinit functions. This patch removes the following warning message: WARNING: vmlinux.o(.devinit.text+0x774a): Section mismatch in reference from the function pci_root_bus_res() to the function .init.text:update_res() The function __devinit pci_root_bus_res() references a function __init update_res(). If update_res is only used by pci_root_bus_res then annotate update_res with a matching annotation. Signed-off-by: Jiri Slaby <jslaby@suse.cz> Cc: Aristeu Sergio <arozansk@redhat.com> Cc: Jesse Barnes <jbarnes@virtuousgeek.org> Cc: linux-pci@vger.kernel.org Cc: x86@kernel.org Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2009-11-25x86/pci: seperate x86_pci_rootbus_res_quirks from amd_bus.cYinghai Lu1-0/+101
Those functions are used by intel_bus.c so seperate them to another file. and make amd_bus a bit smaller. Signed-off-by: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>