On Wed, Apr 10, 2013 at 03:27:05PM +0100, Chris Wilson wrote: > On Fri, Sep 07, 2012 at 10:51:44AM -0700, Ben Widawsky wrote: > > On Fri, 7 Sep 2012 12:03:37 +0200 > > Daniel Vetter <daniel at ffwll.ch> wrote: > > > > > On Thu, Sep 06, 2012 at 01:54:10PM -0700, Ben Widawsky wrote: > > > > From: Jesse Barnes <jbarnes at virtuousgeek.org> > > > > > > > > On SNB and IVB, there's an MSR (also exposed through MCHBAR) we can use > > > > to read out the amount of energy used over time. Expose this in sysfs > > > > to make it easy to do power comparisons with different configurations. > > > > > > > > If the platform supports it, the file will show up under the > > > > drm/card0/power subdirectory of the PCI device in sysfs as gt_energy_uJ. > > > > The value in the file is a running total of energy (in microjoules) > > > > consumed by the graphics device. > > > > > > > > v2: move to sysfs (Ben, Daniel) > > > > expose a simple value (Chris) > > > > drop unrelated hunk (Ben) > > > > > > > > Signed-off-by: Jesse Barnes <jbarnes at virtuousgeek.org> > > > > > > > > v3: by Ben > > > > Tied it into existing rc6 sysfs entries and named that a more generic > > > > "power attrs." Fixed rebase conflicts. > > > > > > > > Signed-off-by: Ben Widawsky <ben at bwidawsk.net> > > A reminder that we never finished this patch. > -Chris > > -- > Chris Wilson, Intel Open Source Technology Centre This will be supported in the RAPL driver, so I think we don't need it. The latest version of that can be found: https://lkml.org/lkml/2013/4/9/812 -- Ben Widawsky, Intel Open Source Technology Center
