CONFIG_PCI_MULTITHREAD_PROBE: PCI Multi-threaded probe (EXPERIMENTAL)

General informations

The Linux kernel configuration item CONFIG_PCI_MULTITHREAD_PROBE:

• prompt: PCI Multi-threaded probe (EXPERIMENTAL)
• type: bool
• depends on: CONFIG_PCI && CONFIG_EXPERIMENTAL && CONFIG_BROKEN
• defined in drivers/pci/Kconfig
• found in Linux kernels: 2.6.19–2.6.21

Help text

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.

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.

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.

Again, use this option at your own risk, you have been warned!

When in doubt, say N.

Hardware

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The data is retrived from:

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• Linux Kernel Driver DataBase (LKDDb)

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