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driver core: per-subsystem multithreaded probing

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Make multithreaded probing work per subsystem instead of per driver.

It doesn't make much sense to probe the same device for multiple drivers in
parallel (after all, only one driver can bind to the device).  Instead, create
a probing thread for each device that probes the drivers one after another. 
Also make the decision to use multi-threaded probe per bus instead of per
device and adapt the pci code.

Signed-off-by: Cornelia Huck <[email protected]>
Cc: Benjamin Herrenschmidt <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
This commit is contained in:
Cornelia Huck 2007-02-05 16:15:25 -08:00 • committed by Greg Kroah-Hartman
commit 21c7f30b1d
4 changed files with 33 additions and 40 deletions
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6
drivers/pci/pci-driver.c
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@ -434,11 +434,6 @@ int __pci_register_driver(struct pci_driver *drv, struct module *owner,
drv->driver.mod_name = mod_name;
drv->driver.kobj.ktype = &pci_driver_kobj_type;
if (pci_multithread_probe)
drv->driver.multithread_probe = pci_multithread_probe;
else
drv->driver.multithread_probe = drv->multithread_probe;
spin_lock_init(&drv->dynids.lock);
INIT_LIST_HEAD(&drv->dynids.list);
@ -574,6 +569,7 @@ struct bus_type pci_bus_type = {
static int __init pci_driver_init(void)
{
pci_bus_type.multithread_probe = pci_multithread_probe;
return bus_register(&pci_bus_type);
}