On Fri, Jun 04, 2004 at 11:46:42AM -0700, Pete Zaitcev wrote:
> On Fri, 4 Jun 2004 10:54:07 -0700
> Greg KH <[EMAIL PROTECTED]> wrote:
> 
> > As you already have the source code for the driver, it's probably much
> > easier just to modify the driver to have it spit out what it is doing
> > than trying to intrepret a USB stream separate from the driver.
> 
> I do not agree. The tcpdump is very useful on Linux even though
> all kernel components are easy "to modify to have it spit out
> what it is [or they are] doing".
> 
> From that angle, the tracing has to be in fact placed into HC drivers,
> not into USB core (with attendant increase in overhead, I grant).
> Placing it into usbfs borders on useless. The USB core might be
> a good compromise if HC drivers are considered sufficiently solid.

Ok, good point, I agree with this.

> Do not forget that some drivers, such as mass storage, cannot be
> made user mode, ever.
> 
> All in all I really like the idea of USBMon, but the implementation
> was horrible beyond words.

Very true.

greg k-h


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