On Tue, Feb 02, 2016 at 02:46:58PM +0000, Tvrtko Ursulin wrote: > From: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx> > > RPS lock must be taken before the struct_mutex to avoid > locking inversion. So stop grabbing it for the whole > powersave initialization and instead only take it during > the sections which need it. > > Also, struct_mutex is not needed any more since dedicated > RPS lock was added in: > > commit 4fc688ce79772496503d22263d61b071a8fb596e > Author: Jesse Barnes <jbarnes@xxxxxxxxxxxxxxxx> > Date: Fri Nov 2 11:14:01 2012 -0700 > > drm/i915: protect RPS/RC6 related accesses (including PCU) with a new mutex > > Based on prototype patch by Chris Wilson and a subsequent > mailing list discussion involving Ville, Imre, Chris and > Daniel. > > v2: More details in the commit. > > v3: Use drm_gem_object_unreference_unlocked. (Chris Wilson) > > Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx> > Cc: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> > Cc: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx> > Cc: Imre Deak <imre.deak@xxxxxxxxx> > Cc: Daniel Vetter <daniel.vetter@xxxxxxxx> Reviewed-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> -Chris -- Chris Wilson, Intel Open Source Technology Centre _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
