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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 <cornelia.huck@de.ibm.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Cornelia Huck 2007-02-05 16:15:25 -08:00 • committed by Greg Kroah-Hartman
parent 460f7e9a1b
commit 21c7f30b1d
4 changed files with 33 additions and 40 deletions
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3
include/linux/device.h
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@ -80,6 +80,7 @@ struct bus_type {
int (*resume)(struct device * dev);
unsigned int drivers_autoprobe:1;
unsigned int multithread_probe:1;
};
extern int __must_check bus_register(struct bus_type * bus);
@ -139,8 +140,6 @@ struct device_driver {
void (*shutdown) (struct device * dev);
int (*suspend) (struct device * dev, pm_message_t state);
int (*resume) (struct device * dev);
unsigned int multithread_probe:1;
};