This is the second part of PCI bus lock patch series, it's based on https://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci.git And the first part of the PCI bus lock patch series could be found at: http://marc.info/?l=linux-pci&m=136948986401098&w=2 You can access the git tree at: Introduce hotplug-safe PCI bus iterators as below, which hold a reference on the returned PCI bus object. bool pci_bus_exists(int domain, int busnr); struct pci_bus *pci_get_bus(int domain, int busnr); struct pci_bus *pci_get_next_bus(struct pci_bus *from); struct pci_bus *pci_get_next_root_bus(struct pci_bus *from); #define for_each_pci_bus(b) for (b = NULL; (b = pci_get_next_bus(b)); ) #define for_each_pci_root_bus(b) \ for (b = NULL; (b = pci_get_next_root_bus(b)); ) The long-term goal is to remove hotplug-unsafe pci_find_bus(), pci_find_next_bus() and the global pci_root_buses list. These new interfaces may be a little slower than existing interfaces, but it should be acceptable because they are not used on hot paths. V1->V2: 1) address review comments for V1 Jiang Liu (20): PCI: introduce hotplug-safe PCI bus iterators PCI, core: use hotplug-safe iterators to walk PCI buses PCI, hotplug: use hotplug-safe iterators to walk PCI buses PCI, IOV: hold a reference to PCI bus when creating virtual PCI devices PCI, Alpha: use hotplug-safe iterators to walk PCI buses PCI, FRV: use hotplug-safe iterators to walk PCI buses PCI, IA64: use hotplug-safe iterators to walk PCI buses PCI, Microblaze: use hotplug-safe iterators to walk PCI buses PCI, mn10300: use hotplug-safe iterators to walk PCI buses PCI, PPC: use hotplug-safe iterators to walk PCI buses PCI, SPARC: use hotplug-safe iterators to walk PCI buses PCI, x86: use hotplug-safe iterators to walk PCI buses PCI, ACPI: use hotplug-safe iterators to walk PCI buses PCI, DRM: use hotplug-safe iterators to walk PCI buses PCI, EDAC: use hotplug-safe PCI bus iterators to walk PCI buses PCI, via-camera: use hotplug-safe iterators to walk PCI buses PCI, iommu: use hotplug-safe iterators to walk PCI buses PCI, eeepc-laptop: use hotplug-safe iterators to walk PCI buses PCI, asus-wmi: use hotplug-safe iterators to walk PCI buses PCI, ARM: use hotplug-safe PCI bus iterators to walk PCI buses arch/alpha/kernel/pci.c | 2 +- arch/arm/kernel/bios32.c | 13 +-- arch/arm/mach-footbridge/dc21285.c | 12 ++- arch/frv/mb93090-mb00/pci-frv.c | 5 +- arch/frv/mb93090-mb00/pci-vdk.c | 2 +- arch/ia64/hp/common/sba_iommu.c | 2 +- arch/ia64/sn/kernel/io_common.c | 2 +- arch/ia64/sn/pci/tioca_provider.c | 3 +- arch/microblaze/pci/pci-common.c | 4 +- arch/mn10300/unit-asb2305/pci-asb2305.c | 5 +- arch/powerpc/kernel/pci-common.c | 4 +- arch/powerpc/kernel/pci_64.c | 22 ++--- arch/sparc/kernel/pci.c | 4 +- arch/x86/pci/acpi.c | 3 +- arch/x86/pci/common.c | 3 +- arch/x86/pci/i386.c | 9 +- arch/x86/pci/irq.c | 2 +- arch/x86/pci/legacy.c | 2 +- drivers/acpi/reboot.c | 3 +- drivers/edac/i7core_edac.c | 2 +- drivers/gpu/drm/drm_fops.c | 6 +- drivers/iommu/amd_iommu.c | 4 +- drivers/iommu/dmar.c | 6 +- drivers/media/platform/via-camera.c | 12 ++- drivers/pci/hotplug-pci.c | 2 +- drivers/pci/hotplug/ibmphp_core.c | 8 +- drivers/pci/hotplug/ibmphp_ebda.c | 8 +- drivers/pci/hotplug/sgi_hotplug.c | 3 +- drivers/pci/hotplug/shpchp_sysfs.c | 2 +- drivers/pci/iov.c | 14 +-- drivers/pci/pci-sysfs.c | 2 +- drivers/pci/pci.h | 1 + drivers/pci/pcie/pme.c | 5 +- drivers/pci/probe.c | 17 ++-- drivers/pci/search.c | 159 ++++++++++++++++++++++++++------ drivers/pci/setup-bus.c | 14 ++- drivers/pci/xen-pcifront.c | 3 +- drivers/platform/x86/asus-wmi.c | 9 +- drivers/platform/x86/eeepc-laptop.c | 5 +- include/linux/pci.h | 23 ++++- 40 files changed, 278 insertions(+), 129 deletions(-) -- 1.8.1.2 -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
