[PATCH 08/12] drm/i915/gvt: Stop checking for impossible interrupts from a kthread

Chris Wilson
2016-10-19T10:12:03Z

The kthread will not be interrupted, don't even bother checking.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Zhenyu Wang <zhenyuw@linux.intel.com>
---
drivers/gpu/drm/i915/gvt/scheduler.c | 9 ++-------
1 file changed, 2 insertions(+), 7 deletions(-)

diff --git a/drivers/gpu/drm/i915/gvt/scheduler.c b/drivers/gpu/drm/i915/gvt/scheduler.c
index 224f19ae61ab..310435498932 100644
--- a/drivers/gpu/drm/i915/gvt/scheduler.c
+++ b/drivers/gpu/drm/i915/gvt/scheduler.c
@@ -423,12 +423,7 @@ static int workload_thread(void *priv)
/*
* Always take i915 big lock first
*/
- ret = i915_mutex_lock_interruptible(&gvt->dev_priv->drm);
- if (ret < 0) {
- gvt_err("i915 submission is not available, retry\n");
- schedule_timeout(1);
- continue;
- }
+ mutex_lock(&gvt->dev_priv->drm.struct_mutex);

gvt_dbg_sched("ring id %d will dispatch workload %p\n",
workload->ring_id, workload);
@@ -447,7 +442,7 @@ static int workload_thread(void *priv)
workload->ring_id, workload);

workload->status = i915_wait_request(workload->req,
- I915_WAIT_INTERRUPTIBLE | I915_WAIT_LOCKED,
+ I915_WAIT_LOCKED,
NULL, NULL);
if (workload->status != 0)
gvt_err("fail to wait workload, skip\n");
--
2.9.3