On Wed, Jun 15, 2016 at 01:18:27PM +0100, Chris Wilson wrote: > Some hardware requires a valid render context before it can initiate > rc6 power gating of the GPU; the default state of the GPU is not > sufficient and may lead to undefined behaviour. The first execution of > any batch will load the "golden render state", at which point it is safe > to enable rc6. As we do not forcibly load the kernel context at resume, > we have to hook into the batch submission to be sure that the render > state is setup before enabling rc6. > > However, since we don't enable powersaving until that first batch, we > queued a delayed task in order to guarantee that the batch is indeed > submitted. > > v2: Rearrange intel_disable_gt_powersave() to match. > v3: Apply user specified cur_freq (or idle_freq if not set). > v4: Give in, and supply a delayed work to autoenable rc6 > > Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> > Cc: Mika Kuoppala <mika.kuoppala@xxxxxxxxx> > Cc: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx> Mika, you complained about this, does this address your needs? -Chris -- Chris Wilson, Intel Open Source Technology Centre _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
