mgr@xxxxxxxxxxx wrote:
Hi,
I want to write a function that detects what USB devices are connected to
the bus. How can you do that efficiently? Is it a good idea to scan the
PCI bus?
Or what do you think about the idea of using poll() and detecting changes
in the /proc/bus/usb/devices file?
Thanks.
/ Moge
a few thoughts from someone who *doesnt* know...
- notify sounds like it was meant for this.
Documentation/dnotify.txt
Documentation/filesystems/inotify.txt
- I recall something about making sysfs pollable, if it was an issue for
sysfs,
it might also be one for proc, with the additional concern that new features
are less likely to appear in procfs than sysfs.
-jimc
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