[PATCH] powerpc: Instrument Hypervisor Calls

[Geoff Levand]

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?

-Geoff