Re: Patch to add usbmon

[Greg KH]

On Tue, Feb 01, 2005 at 10:25:13PM -0800, Pete Zaitcev wrote:
> This patch adds so-called "usbmon", or USB monitoring framework, similar
> to what tcpdump provides for Ethernet. This is an initial version, but
> it should be safe and useful. It adds an overhead of an if () statement
> into submission and giveback paths even when not monitoring, but this
> was deemed a lesser evil than stealth manipulation of function pointers.
> 
> The patch makes two changes to hcd.c which make usbmon more useful:
>  - Change the way we determine that DMA should not be mapped for root
>    hubs, so that usbmon knows easily when it's safe to capture data.
>  - Return exports of usb_bus_list and usb_bus_list_lock for those who
>    wish to build usbmon as a module.
> 
> This version of the patch changes #define to inlines for hooks and
> drops extra mod_ops.
> 
> Signed-off-by: Pete Zaitcev

Applied, thanks.

greg k-h
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