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From: Chris Wilson <chris@chris-wilson.co.uk>
To: intel-gfx@lists.freedesktop.org
Subject: [PATCH 1/2] drm/i915/gvt: Wean off struct_mutex
Date: Wed, 16 Oct 2019 19:39:01 +0100	[thread overview]
Message-ID: <20191016183902.13614-1-chris@chris-wilson.co.uk> (raw)

Use the local vgpu_lock while preparing workloads to avoid taking the
obsolete i915->drm.struct_mutex

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
---
 drivers/gpu/drm/i915/gvt/scheduler.c | 16 +++-------------
 1 file changed, 3 insertions(+), 13 deletions(-)

diff --git a/drivers/gpu/drm/i915/gvt/scheduler.c b/drivers/gpu/drm/i915/gvt/scheduler.c
index 6850f1f40241..ae3e56247576 100644
--- a/drivers/gpu/drm/i915/gvt/scheduler.c
+++ b/drivers/gpu/drm/i915/gvt/scheduler.c
@@ -415,10 +415,9 @@ int intel_gvt_scan_and_shadow_workload(struct intel_vgpu_workload *workload)
 {
 	struct intel_vgpu *vgpu = workload->vgpu;
 	struct intel_vgpu_submission *s = &vgpu->submission;
-	struct drm_i915_private *dev_priv = vgpu->gvt->dev_priv;
 	int ret;
 
-	lockdep_assert_held(&dev_priv->drm.struct_mutex);
+	lockdep_assert_held(&vgpu->vgpu_lock);
 
 	if (workload->shadow)
 		return 0;
@@ -580,8 +579,6 @@ static void update_vreg_in_ctx(struct intel_vgpu_workload *workload)
 
 static void release_shadow_batch_buffer(struct intel_vgpu_workload *workload)
 {
-	struct intel_vgpu *vgpu = workload->vgpu;
-	struct drm_i915_private *dev_priv = vgpu->gvt->dev_priv;
 	struct intel_vgpu_shadow_bb *bb, *pos;
 
 	if (list_empty(&workload->shadow_bb))
@@ -590,8 +587,6 @@ static void release_shadow_batch_buffer(struct intel_vgpu_workload *workload)
 	bb = list_first_entry(&workload->shadow_bb,
 			struct intel_vgpu_shadow_bb, list);
 
-	mutex_lock(&dev_priv->drm.struct_mutex);
-
 	list_for_each_entry_safe(bb, pos, &workload->shadow_bb, list) {
 		if (bb->obj) {
 			if (bb->accessing)
@@ -609,8 +604,6 @@ static void release_shadow_batch_buffer(struct intel_vgpu_workload *workload)
 		list_del(&bb->list);
 		kfree(bb);
 	}
-
-	mutex_unlock(&dev_priv->drm.struct_mutex);
 }
 
 static int prepare_workload(struct intel_vgpu_workload *workload)
@@ -685,7 +678,6 @@ static int prepare_workload(struct intel_vgpu_workload *workload)
 static int dispatch_workload(struct intel_vgpu_workload *workload)
 {
 	struct intel_vgpu *vgpu = workload->vgpu;
-	struct drm_i915_private *dev_priv = vgpu->gvt->dev_priv;
 	struct i915_request *rq;
 	int ring_id = workload->ring_id;
 	int ret;
@@ -694,7 +686,6 @@ static int dispatch_workload(struct intel_vgpu_workload *workload)
 		ring_id, workload);
 
 	mutex_lock(&vgpu->vgpu_lock);
-	mutex_lock(&dev_priv->drm.struct_mutex);
 
 	ret = intel_gvt_workload_req_alloc(workload);
 	if (ret)
@@ -729,7 +720,6 @@ static int dispatch_workload(struct intel_vgpu_workload *workload)
 err_req:
 	if (ret)
 		workload->status = ret;
-	mutex_unlock(&dev_priv->drm.struct_mutex);
 	mutex_unlock(&vgpu->vgpu_lock);
 	return ret;
 }
@@ -1594,9 +1584,9 @@ intel_vgpu_create_workload(struct intel_vgpu *vgpu, int ring_id,
 	 */
 	if (list_empty(workload_q_head(vgpu, ring_id))) {
 		intel_runtime_pm_get(&dev_priv->runtime_pm);
-		mutex_lock(&dev_priv->drm.struct_mutex);
+		mutex_lock(&vgpu->vgpu_lock);
 		ret = intel_gvt_scan_and_shadow_workload(workload);
-		mutex_unlock(&dev_priv->drm.struct_mutex);
+		mutex_unlock(&vgpu->vgpu_lock);
 		intel_runtime_pm_put_unchecked(&dev_priv->runtime_pm);
 	}
 
-- 
2.23.0

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             reply	other threads:[~2019-10-16 18:39 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-10-16 18:39 Chris Wilson [this message]
2019-10-16 18:39 ` [PATCH 2/2] drm/i915/gvt: Wean gvt off dev_priv->engine[] Chris Wilson
2019-10-21  5:37   ` Zhenyu Wang
2019-10-21  8:03     ` Chris Wilson
2020-01-17 15:15       ` [Intel-gfx] " Jani Nikula
2020-01-19  2:37         ` Zhenyu Wang
2019-10-17  1:38 ` ✗ Fi.CI.CHECKPATCH: warning for series starting with [1/2] drm/i915/gvt: Wean off struct_mutex Patchwork
2019-10-17  2:08 ` ✗ Fi.CI.BAT: failure " Patchwork
2019-10-21  5:28 ` [PATCH 1/2] " Zhenyu Wang

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