X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=drivers%2Fpci%2FKconfig;h=5a1fbda482330bb322b1b4999b74fac99b34a735;hb=refs%2Fheads%2Fvserver;hp=421c93f1f899091a5bb1902d5a9230362136808e;hpb=6a77f38946aaee1cd85eeec6cf4229b204c15071;p=linux-2.6.git diff --git a/drivers/pci/Kconfig b/drivers/pci/Kconfig index 421c93f1f..5a1fbda48 100644 --- a/drivers/pci/Kconfig +++ b/drivers/pci/Kconfig @@ -3,47 +3,61 @@ # config PCI_MSI bool "Message Signaled Interrupts (MSI and MSI-X)" + depends on PCI depends on (X86_LOCAL_APIC && X86_IO_APIC) || IA64 - default n + depends on !XEN help This allows device drivers to enable MSI (Message Signaled Interrupts). Message Signaled Interrupts enable a device to generate an interrupt using an inbound Memory Write on its PCI bus instead of asserting a device IRQ pin. + Use of PCI MSI interrupts can be disabled at kernel boot time + by using the 'pci=nomsi' option. This disables MSI for the + entire system. + If you don't know what to do here, say N. -config PCI_LEGACY_PROC - bool "Legacy /proc/pci interface" - depends on PCI - ---help--- - This feature enables a procfs file -- /proc/pci -- that provides a - summary of PCI devices in the system. +config PCI_MULTITHREAD_PROBE + bool "PCI Multi-threaded probe (EXPERIMENTAL)" + depends on PCI && EXPERIMENTAL && BROKEN + help + Say Y here if you want the PCI core to spawn a new thread for + every PCI device that is probed. This can cause a huge + speedup in boot times on multiprocessor machines, and even a + smaller speedup on single processor machines. - This feature has been deprecated as of v2.5.53, in favor of using the - tool lspci(8). This feature may be removed at a future date. + But it can also cause lots of bad things to happen. A number + of PCI drivers cannot properly handle running in this way, + some will just not work properly at all, while others might + decide to blow up power supplies with a huge load all at once, + so use this option at your own risk. - lspci can provide the same data, as well as much more. lspci is a part of - the pci-utils package, which should be installed by your distribution. - See for information on where to get the latest - version. + It is very unwise to use this option if you are not using a + boot process that can handle devices being created in any + order. A program that can create persistent block and network + device names (like udev) is a good idea if you wish to use + this option. - When in doubt, say N. + Again, use this option at your own risk, you have been warned! -config PCI_NAMES - bool "PCI device name database" - depends on PCI - ---help--- - By default, the kernel contains a database of all known PCI device - names to make the information in /proc/pci, /proc/ioports and - similar files comprehensible to the user. + When in doubt, say N. - This database increases size of the kernel image by about 80KB. This - memory is freed after the system boots up if CONFIG_HOTPLUG is not set. +config PCI_DEBUG + bool "PCI Debugging" + depends on PCI && DEBUG_KERNEL + help + Say Y here if you want the PCI core to produce a bunch of debug + messages to the system log. Select this if you are having a + problem with PCI support and want to see more of what is going on. - Anyway, if you are building an installation floppy or kernel for an - embedded system where kernel image size really matters, you can disable - this feature and you'll get device ID numbers instead of names. + When in doubt, say N. - When in doubt, say Y. +config HT_IRQ + bool "Interrupts on hypertransport devices" + default y + depends on PCI && X86_LOCAL_APIC && X86_IO_APIC && !XEN + help + This allows native hypertransport devices to use interrupts. + If unsure say Y.