diff options
| author | Chris Wilson <chris@chris-wilson.co.uk> | 2012-10-05 17:02:56 +0100 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2012-10-08 18:44:36 +0200 |
| commit | cecc21fea98cd18419e26a46e4e8123f55fead91 (patch) | |
| tree | 29c98612523c2369fbeb407d5538f0b0a9bf6676 /drivers/gpu/drm/i915/i915_drv.h | |
| parent | a9627b881680c4419c61e70f60e8f957d8ef225c (diff) | |
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>
Diffstat (limited to 'drivers/gpu/drm/i915/i915_drv.h')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_drv.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index af5ceb46e7b..7f05736c6d8 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -452,6 +452,7 @@ typedef struct drm_i915_private { /* For hangcheck timer */ #define DRM_I915_HANGCHECK_PERIOD 1500 /* in ms */ +#define DRM_I915_HANGCHECK_JIFFIES msecs_to_jiffies(DRM_I915_HANGCHECK_PERIOD) struct timer_list hangcheck_timer; int hangcheck_count; uint32_t last_acthd[I915_NUM_RINGS]; |