This allows us to avoid the situation where worker is increasing the GPU frequency after we've switched to idle.
v2: Do not access ->mm.busy under ->irq_lock v3: Really do not access ->mm.busy under ->irq_lock References: https://bugs.freedesktop.org/show_bug.cgi?id=89728 Cc: Chris Wilson <ch...@chris-wilson.co.uk> Cc: Imre Deak <imre.d...@intel.com> Cc: Daniel Vetter <dan...@ffwll.ch> Signed-off-by: Michał Winiarski <michal.winiar...@intel.com> --- drivers/gpu/drm/i915/i915_irq.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c index f0d9414..03af766 100644 --- a/drivers/gpu/drm/i915/i915_irq.c +++ b/drivers/gpu/drm/i915/i915_irq.c @@ -1089,6 +1089,9 @@ static void gen6_pm_rps_work(struct work_struct *work) int new_delay, adj, min, max; u32 pm_iir; + if (!dev_priv->mm.busy) + return; + spin_lock_irq(&dev_priv->irq_lock); /* Speed up work cancelation during disabling rps interrupts. */ if (!dev_priv->rps.interrupts_enabled) { -- 2.8.0 _______________________________________________ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/intel-gfx
