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0350276168
In a later change we will first collect all PCI functions from the CLP List PCI functions call, then register them to/creating the relevant zbus. Then only after we've created our virtual bus structure will we scan all zbusses iterating over the zbus list. Since scanning is relatively slow a spinlock is a bad fit for protecting the loop over the devices on the zbus. Furthermore doing the probing on the bus we need to use pci_lock_rescan_remove() as devices are added to the PCI subsystem and that is a mutex which can't be locked nested inside a spinlock section. Note that the contention of this lock should be very low either way as zbusses are only added/removed concurrently on hotplug events. Reviewed-by: Matthew Rosato <mjrosato@linux.ibm.com> Reviewed-by: Pierre Morel <pmorel@linux.ibm.com> Signed-off-by: Niklas Schnelle <schnelle@linux.ibm.com> Signed-off-by: Heiko Carstens <hca@linux.ibm.com> |
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| .. | ||
| Makefile | ||
| pci.c | ||
| pci_bus.c | ||
| pci_bus.h | ||
| pci_clp.c | ||
| pci_debug.c | ||
| pci_dma.c | ||
| pci_event.c | ||
| pci_insn.c | ||
| pci_iov.c | ||
| pci_iov.h | ||
| pci_irq.c | ||
| pci_mmio.c | ||
| pci_sysfs.c | ||