Commit ff7ea4c0 authored by Chris Wilson's avatar Chris Wilson

drm/i915: Re-arm the idle timers if the device is still busy

Don't post a downclocking task if the device is still active when the
idle timer fires. A pathological process could queue up several seconds
worth of processing and then go to sleep, during which time the idle
timer would kick in and downclock the GPU.
Signed-off-by: default avatarChris Wilson <chris@chris-wilson.co.uk>
parent c5780270
...@@ -4758,8 +4758,14 @@ static void intel_gpu_idle_timer(unsigned long arg) ...@@ -4758,8 +4758,14 @@ static void intel_gpu_idle_timer(unsigned long arg)
struct drm_device *dev = (struct drm_device *)arg; struct drm_device *dev = (struct drm_device *)arg;
drm_i915_private_t *dev_priv = dev->dev_private; drm_i915_private_t *dev_priv = dev->dev_private;
dev_priv->busy = false; if (!list_empty(&dev_priv->mm.active_list)) {
/* Still processing requests, so just re-arm the timer. */
mod_timer(&dev_priv->idle_timer, jiffies +
msecs_to_jiffies(GPU_IDLE_TIMEOUT));
return;
}
dev_priv->busy = false;
queue_work(dev_priv->wq, &dev_priv->idle_work); queue_work(dev_priv->wq, &dev_priv->idle_work);
} }
...@@ -4770,9 +4776,17 @@ static void intel_crtc_idle_timer(unsigned long arg) ...@@ -4770,9 +4776,17 @@ static void intel_crtc_idle_timer(unsigned long arg)
struct intel_crtc *intel_crtc = (struct intel_crtc *)arg; struct intel_crtc *intel_crtc = (struct intel_crtc *)arg;
struct drm_crtc *crtc = &intel_crtc->base; struct drm_crtc *crtc = &intel_crtc->base;
drm_i915_private_t *dev_priv = crtc->dev->dev_private; drm_i915_private_t *dev_priv = crtc->dev->dev_private;
struct intel_framebuffer *intel_fb;
intel_crtc->busy = false; intel_fb = to_intel_framebuffer(crtc->fb);
if (intel_fb && intel_fb->obj->active) {
/* The framebuffer is still being accessed by the GPU. */
mod_timer(&intel_crtc->idle_timer, jiffies +
msecs_to_jiffies(CRTC_IDLE_TIMEOUT));
return;
}
intel_crtc->busy = false;
queue_work(dev_priv->wq, &dev_priv->idle_work); queue_work(dev_priv->wq, &dev_priv->idle_work);
} }
......
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