From c2a126a46d4c843e9e56b7cad6a14b3791ffab47 Mon Sep 17 00:00:00 2001 From: Chris Wilson Date: Tue, 22 Nov 2016 14:41:19 +0000 Subject: [PATCH] drm/i915: Disable hangcheck when wedged If the gpu reset fails and the machine is terminally wedged, further hangchecks achieve nothing but noise. Disable them, with a corollary that we re-enable hangchecking after a successful GPU reset in case the user is artificially bringing the machine back to life through the debug interface. Signed-off-by: Chris Wilson Reviewed-by: Mika Kuoppala Link: http://patchwork.freedesktop.org/patch/msgid/20161122144121.7379-2-chris@chris-wilson.co.uk --- drivers/gpu/drm/i915/i915_drv.c | 2 ++ drivers/gpu/drm/i915/intel_hangcheck.c | 3 +++ 2 files changed, 5 insertions(+) diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c index ff13503eae08..b893e67b4897 100644 --- a/drivers/gpu/drm/i915/i915_drv.c +++ b/drivers/gpu/drm/i915/i915_drv.c @@ -1822,6 +1822,8 @@ void i915_reset(struct drm_i915_private *dev_priv) goto error; } + i915_queue_hangcheck(dev_priv); + wakeup: wake_up_bit(&error->flags, I915_RESET_IN_PROGRESS); return; diff --git a/drivers/gpu/drm/i915/intel_hangcheck.c b/drivers/gpu/drm/i915/intel_hangcheck.c index c03db022a6d8..f05971f5586f 100644 --- a/drivers/gpu/drm/i915/intel_hangcheck.c +++ b/drivers/gpu/drm/i915/intel_hangcheck.c @@ -434,6 +434,9 @@ static void i915_hangcheck_elapsed(struct work_struct *work) if (!READ_ONCE(dev_priv->gt.awake)) return; + if (i915_terminally_wedged(&dev_priv->gpu_error)) + return; + /* As enabling the GPU requires fairly extensive mmio access, * periodically arm the mmio checker to see if we are triggering * any invalid access. -- 2.20.1