Re: [Intel-gfx] [PATCH 2/3] drm/i915/hwmon: Add HWMON energy support

["Gupta, Anshuman" <anshuman.gupta@intel.com>]

> -----Original Message-----
> From: Dixit, Ashutosh <ashutosh.dixit@intel.com>
> Sent: Wednesday, May 25, 2022 10:27 AM
> To: Nilawar, Badal <badal.nilawar@intel.com>
> Cc: intel-gfx@lists.freedesktop.org; Gupta, Anshuman
> <anshuman.gupta@intel.com>; Ewins, Jon <jon.ewins@intel.com>; Tauro,
> Riana <riana.tauro@intel.com>; Joonas Lahtinen
> <joonas.lahtinen@linux.intel.com>
> Subject: Re: [PATCH 2/3] drm/i915/hwmon: Add HWMON energy support
> 
> On Mon, 23 May 2022 04:08:40 -0700, Badal Nilawar wrote:
> >
> > From: Dale B Stimson <dale.b.stimson@intel.com>
> >
> > As part of the System Managemenent Interface (SMI), use the HWMON
> > subsystem to display energy utilization
> 
> Energy seems to be hardly ever exposed in the kernel. Searching for
> 'hwmon_energy' shows only a single hit in drivers/hwmon/scmi-hwmon.c.
> We should see if there are real consumers for this and the reason for
> exposing this.
rc6_idle test opens energy sys fs to test the Entergy numbers via rapl interface(AFAIR that interface is via x86 MSR) but that interface is not available to use for dgfx. If we can use hwmon energy interface. It can be leverage for IGT tests?

Thanks,
Anshuman Gupta.