On Tue, May 14, 2013 at 9:51 AM, Jiang Liu <liuj97@xxxxxxxxx> wrote: > 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 littler slower than existing interfaces, > but it should be acceptable because they are not used on hot paths. > > Signed-off-by: Jiang Liu <jiang.liu@xxxxxxxxxx> > Cc: linux-pci@xxxxxxxxxxxxxxx > Cc: linux-kernel@xxxxxxxxxxxxxxx Acked-by: Yinghai Lu <yinghai@xxxxxxxxxx> -- 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
