drm/i915/gvt: use hrtimer replace delayed_work in scheduler
Currently the scheduler is triggered by delayed_work, which doesn't
provide precision at microsecond level. Move to hrtimer instead for
more accurate control.
Signed-off-by: Ping Gao <ping.a.gao@intel.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
diff --git a/drivers/gpu/drm/i915/gvt/gvt.c b/drivers/gpu/drm/i915/gvt/gvt.c
index b84b7ca..894735c 100644
--- a/drivers/gpu/drm/i915/gvt/gvt.c
+++ b/drivers/gpu/drm/i915/gvt/gvt.c
@@ -144,6 +144,11 @@ static int gvt_service_thread(void *data)
intel_gvt_emulate_vblank(gvt);
mutex_unlock(&gvt->lock);
}
+
+ if (test_and_clear_bit(INTEL_GVT_REQUEST_SCHED,
+ (void *)&gvt->service_request)) {
+ intel_gvt_schedule(gvt);
+ }
}
return 0;