drm/i915: Align the hangcheck wakeup to the nearest second
round_jiffies() aligns the wakeup time to the nearest second in order to
batch wakeups and reduce system load, which is useful for unimportant
coarse timers like our hangcheck.
v2: round_jiffies_relative() returns the relative jiffie value, whereas
we need the absolute value for the timer.
Suggested-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index 2f76905..ca3ab04 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -2015,8 +2015,7 @@
if (!dev_priv->mm.suspended) {
if (i915_enable_hangcheck) {
mod_timer(&dev_priv->hangcheck_timer,
- jiffies +
- msecs_to_jiffies(DRM_I915_HANGCHECK_PERIOD));
+ round_jiffies_up(jiffies + DRM_I915_HANGCHECK_JIFFIES));
}
if (was_empty) {
queue_delayed_work(dev_priv->wq,