[PATCH 4/9] drm/amdgpu: Add a bitmask in amdgpu_ctx_mgr

[Rex Zhu]

used to manager the reserverd vm space.

Signed-off-by: Rex Zhu <Rex.Zhu at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.c | 8 ++++++--
 drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.h | 4 +++-
 drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c | 6 +++++-
 3 files changed, 14 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.c
index 8edf54b..8802ff2 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.c
@@ -529,10 +529,14 @@ int amdgpu_ctx_wait_prev_fence(struct amdgpu_ctx *ctx,
 	return 0;
 }
 
-void amdgpu_ctx_mgr_init(struct amdgpu_ctx_mgr *mgr)
+int amdgpu_ctx_mgr_init(struct amdgpu_ctx_mgr *mgr)
 {
 	mutex_init(&mgr->lock);
 	idr_init(&mgr->ctx_handles);
+	mgr->resv_vm_bitmap = kzalloc(DIV_ROUND_UP(AMDGPU_VM_MAX_NUM_CTX, BITS_PER_BYTE), GFP_KERNEL);
+	if (unlikely(!mgr->resv_vm_bitmap))
+		return -ENOMEM;
+	return 0;
 }
 
 void amdgpu_ctx_mgr_entity_flush(struct amdgpu_ctx_mgr *mgr)
@@ -601,7 +605,7 @@ void amdgpu_ctx_mgr_fini(struct amdgpu_ctx_mgr *mgr)
 		if (kref_put(&ctx->refcount, amdgpu_ctx_fini) != 1)
 			DRM_ERROR("ctx %p is still alive\n", ctx);
 	}
-
+	kfree(mgr->resv_vm_bitmap);
 	idr_destroy(&mgr->ctx_handles);
 	mutex_destroy(&mgr->lock);
 }
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.h
index b3b012c..94ac951 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.h
@@ -38,6 +38,7 @@ struct amdgpu_ctx_entity {
 struct amdgpu_ctx {
 	struct kref			refcount;
 	struct amdgpu_device		*adev;
+
 	unsigned			reset_counter;
 	unsigned			reset_counter_query;
 	uint32_t			vram_lost_counter;
@@ -56,6 +57,7 @@ struct amdgpu_ctx_mgr {
 	struct mutex		lock;
 	/* protected by lock */
 	struct idr		ctx_handles;
+	unsigned long		*resv_vm_bitmap;
 };
 
 extern const unsigned int amdgpu_ctx_num_entities[AMDGPU_HW_IP_NUM];
@@ -80,7 +82,7 @@ int amdgpu_ctx_ioctl(struct drm_device *dev, void *data,
 int amdgpu_ctx_wait_prev_fence(struct amdgpu_ctx *ctx,
 			       struct drm_sched_entity *entity);
 
-void amdgpu_ctx_mgr_init(struct amdgpu_ctx_mgr *mgr);
+int amdgpu_ctx_mgr_init(struct amdgpu_ctx_mgr *mgr);
 void amdgpu_ctx_mgr_entity_fini(struct amdgpu_ctx_mgr *mgr);
 void amdgpu_ctx_mgr_entity_flush(struct amdgpu_ctx_mgr *mgr);
 void amdgpu_ctx_mgr_fini(struct amdgpu_ctx_mgr *mgr);
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
index 52e4e90..338a091 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
@@ -988,11 +988,15 @@ int amdgpu_driver_open_kms(struct drm_device *dev, struct drm_file *file_priv)
 	mutex_init(&fpriv->bo_list_lock);
 	idr_init(&fpriv->bo_list_handles);
 
-	amdgpu_ctx_mgr_init(&fpriv->ctx_mgr);
+	if (amdgpu_ctx_mgr_init(&fpriv->ctx_mgr))
+		goto error_ctx_mgr;
 
 	file_priv->driver_priv = fpriv;
 	goto out_suspend;
 
+error_ctx_mgr:
+	idr_destroy(&fpriv->bo_list_handles);
+	mutex_destroy(&fpriv->bo_list_lock);
 error_vm:
 	amdgpu_vm_fini(adev, &fpriv->vm);
 
-- 
1.9.1