Re: Lockmetering a custom kernel module

["John Hawkes" <jrhawkes@xxxxxxxxx>]

From: "Florian Boelstler" <euphoria@xxxxxxxx>
> Florian Boelstler schrieb:
> > Is it really true that lockmeter does not work for kernel modules loaded 
> > at runtime? Or is it "hidden" behind some symbol denoted by an address?
>
> Just wanted to let you know that when the driver is built into the kernel 
> I get all expected spinlock profiles.

Yes, this is true.  An already-built kernel module was compiled against the 
unpatched versions of routines like spin_lock() and spin_unlock() which 
don't perform any lockmetering.  It seems to me that a kernel module that is 
compiled against lockmeter-patched kernel source should link to the 
lockmeter'ing locking/unlocking routines.  Are you saying that these 
post-patch-built modules do not 'meter' correctly, either?

John Hawkes