[PATCH] powerpc: Instrument Hypervisor Calls
kravetz at us.ibm.com
Tue Aug 15 09:41:46 EST 2006
On Mon, Aug 14, 2006 at 04:35:12PM -0700, Geoff Levand wrote:
> Mike Kravetz wrote:
> > +config HCALL_STATS
> > + bool "Hypervisor call instrumentation"
> > + depends on PPC_PSERIES && DEBUG_FS
> > + help
> > + Adds code to keep track of the number of hypervisor calls made and
> > + the amount of time spent in hypervisor calls: both wall time (based
> > + on time base) and cpu time (based on PURR). A directory named
> > + hcall_inst is added at the root of the debugfs filesystem.
> Could we keep this more generic and not mention platform specific
> things like PURR?
Not sure if I follow. PURR will be used/displayed if available. Time
based statistics will always be available.
I can change the description to make this clear. Or, are you asking
that this not be mentioned at all? Based on previous discussions, I
added the ability to display both wall and cpu time if available.
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