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_irq.c b/drivers/gpu/drm/i915/i915_irq.c
index 337c5cd..1406d79 100644
--- a/drivers/gpu/drm/i915/i915_irq.c
+++ b/drivers/gpu/drm/i915/i915_irq.c
@@ -353,8 +353,7 @@
if (i915_enable_hangcheck) {
dev_priv->hangcheck_count = 0;
mod_timer(&dev_priv->hangcheck_timer,
- jiffies +
- msecs_to_jiffies(DRM_I915_HANGCHECK_PERIOD));
+ round_jiffies_up(jiffies + DRM_I915_HANGCHECK_JIFFIES));
}
}
@@ -1752,7 +1751,7 @@
repeat:
/* Reset timer case chip hangs without another request being added */
mod_timer(&dev_priv->hangcheck_timer,
- jiffies + msecs_to_jiffies(DRM_I915_HANGCHECK_PERIOD));
+ round_jiffies_up(jiffies + DRM_I915_HANGCHECK_JIFFIES));
}
/* drm_dma.h hooks