On 03/06/16 17:08, Chris Wilson wrote:
The queue only ever contains at most one item and has no special flags.
It is just a very simple wrapper around the system-wq - a complication
with no benefits.
v2: Use the system_long_wq as we may wish to capture the error state
after detecting the hang - which may take a bit of time.
Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/i915_drv.c | 8 --------
drivers/gpu/drm/i915/i915_drv.h | 1 -
drivers/gpu/drm/i915/i915_irq.c | 7 ++++---
3 files changed, 4 insertions(+), 12 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index 2f8b2545e3de..3c8c75c77574 100644
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -1143,15 +1143,8 @@ static int i915_workqueues_init(struct drm_i915_private *dev_priv)
if (dev_priv->hotplug.dp_wq == NULL)
goto out_free_wq;
- dev_priv->gpu_error.hangcheck_wq =
- alloc_ordered_workqueue("i915-hangcheck", 0);
- if (dev_priv->gpu_error.hangcheck_wq == NULL)
- goto out_free_dp_wq;
-
return 0;
-out_free_dp_wq:
- destroy_workqueue(dev_priv->hotplug.dp_wq);
out_free_wq:
destroy_workqueue(dev_priv->wq);
out_err:
@@ -1162,7 +1155,6 @@ out_err:
static void i915_workqueues_cleanup(struct drm_i915_private *dev_priv)
{
- destroy_workqueue(dev_priv->gpu_error.hangcheck_wq);
destroy_workqueue(dev_priv->hotplug.dp_wq);
destroy_workqueue(dev_priv->wq);
}
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index be533de7383b..9471ebc99624 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -1365,7 +1365,6 @@ struct i915_gpu_error {
/* Hang gpu twice in this window and your context gets banned */
#define DRM_I915_CTX_BAN_PERIOD DIV_ROUND_UP(8*DRM_I915_HANGCHECK_PERIOD, 1000)
- struct workqueue_struct *hangcheck_wq;
struct delayed_work hangcheck_work;
/* For reset and error_state handling. */
diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
index 1303d7c034d3..a09310701999 100644
--- a/drivers/gpu/drm/i915/i915_irq.c
+++ b/drivers/gpu/drm/i915/i915_irq.c
@@ -3248,7 +3248,7 @@ out:
void i915_queue_hangcheck(struct drm_i915_private *dev_priv)
{
- struct i915_gpu_error *e = &dev_priv->gpu_error;
+ unsigned long delay;
if (!i915.enable_hangcheck)
return;
@@ -3258,8 +3258,9 @@ void i915_queue_hangcheck(struct drm_i915_private *dev_priv)
* we will ignore a hung ring if a second ring is kept busy.
*/
- queue_delayed_work(e->hangcheck_wq, &e->hangcheck_work,
- round_jiffies_up_relative(DRM_I915_HANGCHECK_JIFFIES));
+ delay = round_jiffies_up_relative(DRM_I915_HANGCHECK_JIFFIES);
+ queue_delayed_work(system_long_wq,
+ &dev_priv->gpu_error.hangcheck_work, delay);
}
static void ibx_irq_reset(struct drm_device *dev)
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx>
Regards,
Tvrtko
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