[PATCH libdrm 2/2] [RFC] amdgpu: do not free flink bo for flink_fd

[PATCH libdrm 2/2] [RFC] amdgpu: do not free flink bo for flink_fd

[Junwei Zhang]

the flink bo is used to export

Signed-off-by: Junwei Zhang <Jerry.Zhang@amd.com>
---
 amdgpu/amdgpu_bo.c | 6 ------
 1 file changed, 6 deletions(-)

diff --git a/amdgpu/amdgpu_bo.c b/amdgpu/amdgpu_bo.c
index 2947715..0d0c73b 100644
--- a/amdgpu/amdgpu_bo.c
+++ b/amdgpu/amdgpu_bo.c
@@ -219,12 +219,6 @@ static int amdgpu_bo_export_flink(amdgpu_bo_handle bo)
 
 	bo->flink_name = flink.name;
 
-	if (bo->dev->flink_fd != bo->dev->fd) {
-		struct drm_gem_close args = {};
-		args.handle = handle;
-		drmIoctl(bo->dev->flink_fd, DRM_IOCTL_GEM_CLOSE, &args);
-	}
-
 	pthread_mutex_lock(&bo->dev->bo_table_mutex);
 	r = handle_table_insert(&bo->dev->bo_flink_names, bo->flink_name, bo);
 	pthread_mutex_unlock(&bo->dev->bo_table_mutex);
-- 
1.9.1

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[PATCH libdrm 1/2] amdgpu: add a function to create amdgpu bo internally (v3)

[Junwei Zhang]

a helper function to create and initialize amdgpu bo

v2: update error handling: add label and free bo
v3: update error handling: separate each error label

Signed-off-by: Junwei Zhang <Jerry.Zhang@amd.com>
---
 amdgpu/amdgpu_bo.c | 196 ++++++++++++++++++++++++++---------------------------
 1 file changed, 95 insertions(+), 101 deletions(-)

diff --git a/amdgpu/amdgpu_bo.c b/amdgpu/amdgpu_bo.c
index b790e9b..6f0baf1 100644
--- a/amdgpu/amdgpu_bo.c
+++ b/amdgpu/amdgpu_bo.c
@@ -48,11 +48,31 @@ static void amdgpu_close_kms_handle(amdgpu_device_handle dev,
 	drmIoctl(dev->fd, DRM_IOCTL_GEM_CLOSE, &args);
 }
 
+static int amdgpu_bo_create(amdgpu_device_handle dev,
+			    uint64_t size,
+			    uint32_t handle,
+			    amdgpu_bo_handle *buf_handle)
+{
+	struct amdgpu_bo *bo;
+
+	bo = calloc(1, sizeof(struct amdgpu_bo));
+	if (!bo)
+		return -ENOMEM;
+
+	atomic_set(&bo->refcount, 1);
+	bo->dev = dev;
+	bo->alloc_size = size;
+	bo->handle = handle;
+	pthread_mutex_init(&bo->cpu_access_mutex, NULL);
+
+	*buf_handle = bo;
+	return 0;
+}
+
 int amdgpu_bo_alloc(amdgpu_device_handle dev,
 		    struct amdgpu_bo_alloc_request *alloc_buffer,
 		    amdgpu_bo_handle *buf_handle)
 {
-	struct amdgpu_bo *bo;
 	union drm_amdgpu_gem_create args;
 	unsigned heap = alloc_buffer->preferred_heap;
 	int r = 0;
@@ -61,14 +81,6 @@ int amdgpu_bo_alloc(amdgpu_device_handle dev,
 	if (!(heap & (AMDGPU_GEM_DOMAIN_GTT | AMDGPU_GEM_DOMAIN_VRAM)))
 		return -EINVAL;
 
-	bo = calloc(1, sizeof(struct amdgpu_bo));
-	if (!bo)
-		return -ENOMEM;
-
-	atomic_set(&bo->refcount, 1);
-	bo->dev = dev;
-	bo->alloc_size = alloc_buffer->alloc_size;
-
 	memset(&args, 0, sizeof(args));
 	args.in.bo_size = alloc_buffer->alloc_size;
 	args.in.alignment = alloc_buffer->phys_alignment;
@@ -80,24 +92,23 @@ int amdgpu_bo_alloc(amdgpu_device_handle dev,
 	/* Allocate the buffer with the preferred heap. */
 	r = drmCommandWriteRead(dev->fd, DRM_AMDGPU_GEM_CREATE,
 				&args, sizeof(args));
+	if (r)
+		goto out;
+
+	r = amdgpu_bo_create(dev, alloc_buffer->alloc_size, args.out.handle,
+			     buf_handle);
 	if (r) {
-		free(bo);
-		return r;
+		amdgpu_close_kms_handle(dev, args.out.handle);
+		goto out;
 	}
 
-	bo->handle = args.out.handle;
-
-	pthread_mutex_lock(&bo->dev->bo_table_mutex);
-	r = handle_table_insert(&bo->dev->bo_handles, bo->handle, bo);
-	pthread_mutex_unlock(&bo->dev->bo_table_mutex);
-
-	pthread_mutex_init(&bo->cpu_access_mutex, NULL);
-
+	pthread_mutex_lock(&dev->bo_table_mutex);
+	r = handle_table_insert(&dev->bo_handles, (*buf_handle)->handle,
+				*buf_handle);
+	pthread_mutex_unlock(&dev->bo_table_mutex);
 	if (r)
-		amdgpu_bo_free(bo);
-	else
-		*buf_handle = bo;
-
+		amdgpu_bo_free(*buf_handle);
+out:
 	return r;
 }
 
@@ -256,7 +267,9 @@ int amdgpu_bo_import(amdgpu_device_handle dev,
 {
 	struct drm_gem_open open_arg = {};
 	struct amdgpu_bo *bo = NULL;
-	int r;
+	uint32_t handle = 0, flink_name = 0;
+	uint64_t alloc_size = 0;
+	int r = 0;
 	int dma_fd;
 	uint64_t dma_buf_size = 0;
 
@@ -266,22 +279,18 @@ int amdgpu_bo_import(amdgpu_device_handle dev,
 
 	/* Convert a DMA buf handle to a KMS handle now. */
 	if (type == amdgpu_bo_handle_type_dma_buf_fd) {
-		uint32_t handle;
 		off_t size;
 
 		/* Get a KMS handle. */
 		r = drmPrimeFDToHandle(dev->fd, shared_handle, &handle);
-		if (r) {
-			pthread_mutex_unlock(&dev->bo_table_mutex);
-			return r;
-		}
+		if (r)
+			goto unlock;
 
 		/* Query the buffer size. */
 		size = lseek(shared_handle, 0, SEEK_END);
 		if (size == (off_t)-1) {
-			pthread_mutex_unlock(&dev->bo_table_mutex);
-			amdgpu_close_kms_handle(dev, handle);
-			return -errno;
+			r = -errno;
+			goto close_handle;
 		}
 		lseek(shared_handle, 0, SEEK_SET);
 
@@ -302,12 +311,12 @@ int amdgpu_bo_import(amdgpu_device_handle dev,
 	case amdgpu_bo_handle_type_kms:
 	case amdgpu_bo_handle_type_kms_noimport:
 		/* Importing a KMS handle in not allowed. */
-		pthread_mutex_unlock(&dev->bo_table_mutex);
-		return -EPERM;
+		r = -EPERM;
+		goto unlock;
 
 	default:
-		pthread_mutex_unlock(&dev->bo_table_mutex);
-		return -EINVAL;
+		r = -EINVAL;
+		goto unlock;
 	}
 
 	if (bo) {
@@ -320,58 +329,32 @@ int amdgpu_bo_import(amdgpu_device_handle dev,
 		return 0;
 	}
 
-	bo = calloc(1, sizeof(struct amdgpu_bo));
-	if (!bo) {
-		pthread_mutex_unlock(&dev->bo_table_mutex);
-		if (type == amdgpu_bo_handle_type_dma_buf_fd) {
-			amdgpu_close_kms_handle(dev, shared_handle);
-		}
-		return -ENOMEM;
-	}
-
 	/* Open the handle. */
 	switch (type) {
 	case amdgpu_bo_handle_type_gem_flink_name:
 		open_arg.name = shared_handle;
 		r = drmIoctl(dev->flink_fd, DRM_IOCTL_GEM_OPEN, &open_arg);
-		if (r) {
-			free(bo);
-			pthread_mutex_unlock(&dev->bo_table_mutex);
-			return r;
-		}
+		if (r)
+			goto unlock;
 
-		bo->handle = open_arg.handle;
+		flink_name = shared_handle;
+		handle = open_arg.handle;
+		alloc_size = open_arg.size;
 		if (dev->flink_fd != dev->fd) {
-			r = drmPrimeHandleToFD(dev->flink_fd, bo->handle, DRM_CLOEXEC, &dma_fd);
-			if (r) {
-				free(bo);
-				pthread_mutex_unlock(&dev->bo_table_mutex);
-				return r;
-			}
-			r = drmPrimeFDToHandle(dev->fd, dma_fd, &bo->handle );
-
+			r = drmPrimeHandleToFD(dev->flink_fd, handle,
+					       DRM_CLOEXEC, &dma_fd);
+			if (r)
+				goto close_handle;
+			r = drmPrimeFDToHandle(dev->fd, dma_fd, &handle);
 			close(dma_fd);
-
-			if (r) {
-				free(bo);
-				pthread_mutex_unlock(&dev->bo_table_mutex);
-				return r;
-			}
-		}
-		bo->flink_name = shared_handle;
-		bo->alloc_size = open_arg.size;
-		r = handle_table_insert(&dev->bo_flink_names, shared_handle,
-					bo);
-		if (r) {
-			pthread_mutex_unlock(&dev->bo_table_mutex);
-			amdgpu_bo_free(bo);
-			return r;
+			if (r)
+				goto close_handle;
 		}
 		break;
 
 	case amdgpu_bo_handle_type_dma_buf_fd:
-		bo->handle = shared_handle;
-		bo->alloc_size = dma_buf_size;
+		handle = shared_handle;
+		alloc_size = dma_buf_size;
 		break;
 
 	case amdgpu_bo_handle_type_kms:
@@ -380,16 +363,35 @@ int amdgpu_bo_import(amdgpu_device_handle dev,
 	}
 
 	/* Initialize it. */
-	atomic_set(&bo->refcount, 1);
-	bo->dev = dev;
-	pthread_mutex_init(&bo->cpu_access_mutex, NULL);
+	r = amdgpu_bo_create(dev, alloc_size, handle, &bo);
+	if (r)
+		goto close_handle;
 
-	handle_table_insert(&dev->bo_handles, bo->handle, bo);
-	pthread_mutex_unlock(&dev->bo_table_mutex);
+	r = handle_table_insert(&dev->bo_handles, bo->handle, bo);
+	if (r)
+		goto bo_free;
+	if (flink_name) {
+		bo->flink_name = flink_name;
+		r = handle_table_insert(&dev->bo_flink_names, flink_name,
+					bo);
+		if (r)
+			goto remove_handle;
+	}
 
 	output->buf_handle = bo;
 	output->alloc_size = bo->alloc_size;
+	pthread_mutex_unlock(&dev->bo_table_mutex);
 	return 0;
+
+remove_handle:
+	handle_table_remove(&dev->bo_handles, bo->handle);
+bo_free:
+	amdgpu_bo_free(bo);
+close_handle:
+	amdgpu_close_kms_handle(dev, handle);
+unlock:
+	pthread_mutex_unlock(&dev->bo_table_mutex);
+	return r;
 }
 
 int amdgpu_bo_free(amdgpu_bo_handle buf_handle)
@@ -574,7 +576,6 @@ int amdgpu_create_bo_from_user_mem(amdgpu_device_handle dev,
 				    amdgpu_bo_handle *buf_handle)
 {
 	int r;
-	struct amdgpu_bo *bo;
 	struct drm_amdgpu_gem_userptr args;
 
 	args.addr = (uintptr_t)cpu;
@@ -584,28 +585,21 @@ int amdgpu_create_bo_from_user_mem(amdgpu_device_handle dev,
 	r = drmCommandWriteRead(dev->fd, DRM_AMDGPU_GEM_USERPTR,
 				&args, sizeof(args));
 	if (r)
-		return r;
-
-	bo = calloc(1, sizeof(struct amdgpu_bo));
-	if (!bo)
-		return -ENOMEM;
+		goto out;
 
-	atomic_set(&bo->refcount, 1);
-	bo->dev = dev;
-	bo->alloc_size = size;
-	bo->handle = args.handle;
-
-	pthread_mutex_lock(&bo->dev->bo_table_mutex);
-	r = handle_table_insert(&bo->dev->bo_handles, bo->handle, bo);
-	pthread_mutex_unlock(&bo->dev->bo_table_mutex);
-
-	pthread_mutex_init(&bo->cpu_access_mutex, NULL);
+	r = amdgpu_bo_create(dev, size, args.handle, buf_handle);
+	if (r) {
+		amdgpu_close_kms_handle(dev, args.handle);
+		goto out;
+	}
 
+	pthread_mutex_lock(&dev->bo_table_mutex);
+	r = handle_table_insert(&dev->bo_handles, (*buf_handle)->handle,
+				*buf_handle);
+	pthread_mutex_unlock(&dev->bo_table_mutex);
 	if (r)
-		amdgpu_bo_free(bo);
-	else
-		*buf_handle = bo;
-
+		amdgpu_bo_free(*buf_handle);
+out:
 	return r;
 }
 
-- 
1.9.1

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[PATCH libdrm 2/2] [RFC] amdgpu: do not free flink bo for flink_fd

[Junwei Zhang]

the flink bo is used to export

Signed-off-by: Junwei Zhang <Jerry.Zhang@amd.com>
---
 amdgpu/amdgpu_bo.c | 6 ------
 1 file changed, 6 deletions(-)

diff --git a/amdgpu/amdgpu_bo.c b/amdgpu/amdgpu_bo.c
index 6f0baf1..5b91cfc 100644
--- a/amdgpu/amdgpu_bo.c
+++ b/amdgpu/amdgpu_bo.c
@@ -219,12 +219,6 @@ static int amdgpu_bo_export_flink(amdgpu_bo_handle bo)
 
 	bo->flink_name = flink.name;
 
-	if (bo->dev->flink_fd != bo->dev->fd) {
-		struct drm_gem_close args = {};
-		args.handle = handle;
-		drmIoctl(bo->dev->flink_fd, DRM_IOCTL_GEM_CLOSE, &args);
-	}
-
 	pthread_mutex_lock(&bo->dev->bo_table_mutex);
 	r = handle_table_insert(&bo->dev->bo_flink_names, bo->flink_name, bo);
 	pthread_mutex_unlock(&bo->dev->bo_table_mutex);
-- 
1.9.1

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Re: [PATCH libdrm 2/2] [RFC] amdgpu: do not free flink bo for flink_fd

[Christian König]

Am 10.08.2018 um 07:05 schrieb Junwei Zhang:
> the flink bo is used to export

Why should we do this? That makes no sense, this way we would create a 
memory leak.

Christian.

>
> Signed-off-by: Junwei Zhang <Jerry.Zhang@amd.com>
> ---
>   amdgpu/amdgpu_bo.c | 6 ------
>   1 file changed, 6 deletions(-)
>
> diff --git a/amdgpu/amdgpu_bo.c b/amdgpu/amdgpu_bo.c
> index 6f0baf1..5b91cfc 100644
> --- a/amdgpu/amdgpu_bo.c
> +++ b/amdgpu/amdgpu_bo.c
> @@ -219,12 +219,6 @@ static int amdgpu_bo_export_flink(amdgpu_bo_handle bo)
>   
>   	bo->flink_name = flink.name;
>   
> -	if (bo->dev->flink_fd != bo->dev->fd) {
> -		struct drm_gem_close args = {};
> -		args.handle = handle;
> -		drmIoctl(bo->dev->flink_fd, DRM_IOCTL_GEM_CLOSE, &args);
> -	}
> -
>   	pthread_mutex_lock(&bo->dev->bo_table_mutex);
>   	r = handle_table_insert(&bo->dev->bo_flink_names, bo->flink_name, bo);
>   	pthread_mutex_unlock(&bo->dev->bo_table_mutex);

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Re: [PATCH libdrm 2/2] [RFC] amdgpu: do not free flink bo for flink_fd

[Zhang, Jerry (Junwei)]

On 08/10/2018 10:20 PM, Christian König wrote:
> Am 10.08.2018 um 07:05 schrieb Junwei Zhang:
>> the flink bo is used to export
>
> Why should we do this? That makes no sense, this way we would create a memory leak.

Get the thought from bo_import code, but neglected the detail of DRM_IOCTL_GEM_CLOSE IOCTL,
that will remove the bo handle from filp->object_idr rather than filp->dev->object_name_idr.
Then make sense now. Sorry for the noise.

Jerry

>
> Christian.
>
>>
>> Signed-off-by: Junwei Zhang <Jerry.Zhang@amd.com>
>> ---
>>   amdgpu/amdgpu_bo.c | 6 ------
>>   1 file changed, 6 deletions(-)
>>
>> diff --git a/amdgpu/amdgpu_bo.c b/amdgpu/amdgpu_bo.c
>> index 6f0baf1..5b91cfc 100644
>> --- a/amdgpu/amdgpu_bo.c
>> +++ b/amdgpu/amdgpu_bo.c
>> @@ -219,12 +219,6 @@ static int amdgpu_bo_export_flink(amdgpu_bo_handle bo)
>>       bo->flink_name = flink.name;
>> -    if (bo->dev->flink_fd != bo->dev->fd) {
>> -        struct drm_gem_close args = {};
>> -        args.handle = handle;
>> -        drmIoctl(bo->dev->flink_fd, DRM_IOCTL_GEM_CLOSE, &args);
>> -    }
>> -
>>       pthread_mutex_lock(&bo->dev->bo_table_mutex);
>>       r = handle_table_insert(&bo->dev->bo_flink_names, bo->flink_name, bo);
>>       pthread_mutex_unlock(&bo->dev->bo_table_mutex);
>
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Re: [PATCH libdrm 2/2] [RFC] amdgpu: do not free flink bo for flink_fd

[Zhang, Jerry (Junwei)]

On 08/13/2018 11:03 AM, Zhang, Jerry (Junwei) wrote:
> On 08/10/2018 10:20 PM, Christian König wrote:
>> Am 10.08.2018 um 07:05 schrieb Junwei Zhang:
>>> the flink bo is used to export
>>
>> Why should we do this? That makes no sense, this way we would create a memory leak.
>
> Get the thought from bo_import code, but neglected the detail of DRM_IOCTL_GEM_CLOSE IOCTL,
> that will remove the bo handle from filp->object_idr rather than filp->dev->object_name_idr.

If so, shall we close the flink bo handle(open_arg.handle) in bo import, when fails to find bo in flink handle table?
{{{
args.handle = open_arg.handle;
drmIoctl(dev->flink_fd, DRM_IOCTL_GEM_CLOSE, &args);
}}}

Regards,
Jerry

> Then make sense now. Sorry for the noise.
>
> Jerry
>
>>
>> Christian.
>>
>>>
>>> Signed-off-by: Junwei Zhang <Jerry.Zhang@amd.com>
>>> ---
>>>   amdgpu/amdgpu_bo.c | 6 ------
>>>   1 file changed, 6 deletions(-)
>>>
>>> diff --git a/amdgpu/amdgpu_bo.c b/amdgpu/amdgpu_bo.c
>>> index 6f0baf1..5b91cfc 100644
>>> --- a/amdgpu/amdgpu_bo.c
>>> +++ b/amdgpu/amdgpu_bo.c
>>> @@ -219,12 +219,6 @@ static int amdgpu_bo_export_flink(amdgpu_bo_handle bo)
>>>       bo->flink_name = flink.name;
>>> -    if (bo->dev->flink_fd != bo->dev->fd) {
>>> -        struct drm_gem_close args = {};
>>> -        args.handle = handle;
>>> -        drmIoctl(bo->dev->flink_fd, DRM_IOCTL_GEM_CLOSE, &args);
>>> -    }
>>> -
>>>       pthread_mutex_lock(&bo->dev->bo_table_mutex);
>>>       r = handle_table_insert(&bo->dev->bo_flink_names, bo->flink_name, bo);
>>>       pthread_mutex_unlock(&bo->dev->bo_table_mutex);
>>
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Re: [PATCH libdrm 2/2] [RFC] amdgpu: do not free flink bo for flink_fd

[Christian König]

Am 13.08.2018 um 08:43 schrieb Zhang, Jerry (Junwei):
> On 08/13/2018 11:03 AM, Zhang, Jerry (Junwei) wrote:
>> On 08/10/2018 10:20 PM, Christian König wrote:
>>> Am 10.08.2018 um 07:05 schrieb Junwei Zhang:
>>>> the flink bo is used to export
>>>
>>> Why should we do this? That makes no sense, this way we would create 
>>> a memory leak.
>>
>> Get the thought from bo_import code, but neglected the detail of 
>> DRM_IOCTL_GEM_CLOSE IOCTL,
>> that will remove the bo handle from filp->object_idr rather than 
>> filp->dev->object_name_idr.
>
> If so, shall we close the flink bo handle(open_arg.handle) in bo 
> import, when fails to find bo in flink handle table?

Yeah, that's what I've meant with that looks like we forgot to close the 
handle there.

Christian.

> {{{
> args.handle = open_arg.handle;
> drmIoctl(dev->flink_fd, DRM_IOCTL_GEM_CLOSE, &args);
> }}}
>
> Regards,
> Jerry
>
>> Then make sense now. Sorry for the noise.
>>
>> Jerry
>>
>>>
>>> Christian.
>>>
>>>>
>>>> Signed-off-by: Junwei Zhang <Jerry.Zhang@amd.com>
>>>> ---
>>>>   amdgpu/amdgpu_bo.c | 6 ------
>>>>   1 file changed, 6 deletions(-)
>>>>
>>>> diff --git a/amdgpu/amdgpu_bo.c b/amdgpu/amdgpu_bo.c
>>>> index 6f0baf1..5b91cfc 100644
>>>> --- a/amdgpu/amdgpu_bo.c
>>>> +++ b/amdgpu/amdgpu_bo.c
>>>> @@ -219,12 +219,6 @@ static int 
>>>> amdgpu_bo_export_flink(amdgpu_bo_handle bo)
>>>>       bo->flink_name = flink.name;
>>>> -    if (bo->dev->flink_fd != bo->dev->fd) {
>>>> -        struct drm_gem_close args = {};
>>>> -        args.handle = handle;
>>>> -        drmIoctl(bo->dev->flink_fd, DRM_IOCTL_GEM_CLOSE, &args);
>>>> -    }
>>>> -
>>>> pthread_mutex_lock(&bo->dev->bo_table_mutex);
>>>>       r = handle_table_insert(&bo->dev->bo_flink_names, 
>>>> bo->flink_name, bo);
>>>> pthread_mutex_unlock(&bo->dev->bo_table_mutex);
>>>
>> _______________________________________________
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Re: [PATCH libdrm 2/2] [RFC] amdgpu: do not free flink bo for flink_fd

[Zhang, Jerry (Junwei)]

On 08/13/2018 04:29 PM, Christian König wrote:
> Am 13.08.2018 um 08:43 schrieb Zhang, Jerry (Junwei):
>> On 08/13/2018 11:03 AM, Zhang, Jerry (Junwei) wrote:
>>> On 08/10/2018 10:20 PM, Christian König wrote:
>>>> Am 10.08.2018 um 07:05 schrieb Junwei Zhang:
>>>>> the flink bo is used to export
>>>>
>>>> Why should we do this? That makes no sense, this way we would create a memory leak.
>>>
>>> Get the thought from bo_import code, but neglected the detail of DRM_IOCTL_GEM_CLOSE IOCTL,
>>> that will remove the bo handle from filp->object_idr rather than filp->dev->object_name_idr.
>>
>> If so, shall we close the flink bo handle(open_arg.handle) in bo import, when fails to find bo in flink handle table?
>
> Yeah, that's what I've meant with that looks like we forgot to close the handle there.

Try to fix it in bo create patch.

Jerry

>
> Christian.
>
>> {{{
>> args.handle = open_arg.handle;
>> drmIoctl(dev->flink_fd, DRM_IOCTL_GEM_CLOSE, &args);
>> }}}
>>
>> Regards,
>> Jerry
>>
>>> Then make sense now. Sorry for the noise.
>>>
>>> Jerry
>>>
>>>>
>>>> Christian.
>>>>
>>>>>
>>>>> Signed-off-by: Junwei Zhang <Jerry.Zhang@amd.com>
>>>>> ---
>>>>>   amdgpu/amdgpu_bo.c | 6 ------
>>>>>   1 file changed, 6 deletions(-)
>>>>>
>>>>> diff --git a/amdgpu/amdgpu_bo.c b/amdgpu/amdgpu_bo.c
>>>>> index 6f0baf1..5b91cfc 100644
>>>>> --- a/amdgpu/amdgpu_bo.c
>>>>> +++ b/amdgpu/amdgpu_bo.c
>>>>> @@ -219,12 +219,6 @@ static int amdgpu_bo_export_flink(amdgpu_bo_handle bo)
>>>>>       bo->flink_name = flink.name;
>>>>> -    if (bo->dev->flink_fd != bo->dev->fd) {
>>>>> -        struct drm_gem_close args = {};
>>>>> -        args.handle = handle;
>>>>> -        drmIoctl(bo->dev->flink_fd, DRM_IOCTL_GEM_CLOSE, &args);
>>>>> -    }
>>>>> -
>>>>> pthread_mutex_lock(&bo->dev->bo_table_mutex);
>>>>>       r = handle_table_insert(&bo->dev->bo_flink_names, bo->flink_name, bo);
>>>>> pthread_mutex_unlock(&bo->dev->bo_table_mutex);
>>>>
>>> _______________________________________________
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>>> amd-gfx@lists.freedesktop.org
>>> https://lists.freedesktop.org/mailman/listinfo/amd-gfx
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>
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Re: [PATCH libdrm 2/2] [RFC] amdgpu: do not free flink bo for flink_fd

[Christian König]

Am 13.08.2018 um 12:08 schrieb Zhang, Jerry (Junwei):
> On 08/13/2018 04:29 PM, Christian König wrote:
>> Am 13.08.2018 um 08:43 schrieb Zhang, Jerry (Junwei):
>>> On 08/13/2018 11:03 AM, Zhang, Jerry (Junwei) wrote:
>>>> On 08/10/2018 10:20 PM, Christian König wrote:
>>>>> Am 10.08.2018 um 07:05 schrieb Junwei Zhang:
>>>>>> the flink bo is used to export
>>>>>
>>>>> Why should we do this? That makes no sense, this way we would 
>>>>> create a memory leak.
>>>>
>>>> Get the thought from bo_import code, but neglected the detail of 
>>>> DRM_IOCTL_GEM_CLOSE IOCTL,
>>>> that will remove the bo handle from filp->object_idr rather than 
>>>> filp->dev->object_name_idr.
>>>
>>> If so, shall we close the flink bo handle(open_arg.handle) in bo 
>>> import, when fails to find bo in flink handle table?
>>
>> Yeah, that's what I've meant with that looks like we forgot to close 
>> the handle there.
>
> Try to fix it in bo create patch.

NO! Please make a separate patch for that.

Could be that somebody wants to backport this.

Christian.

>
> Jerry
>
>>
>> Christian.
>>
>>> {{{
>>> args.handle = open_arg.handle;
>>> drmIoctl(dev->flink_fd, DRM_IOCTL_GEM_CLOSE, &args);
>>> }}}
>>>
>>> Regards,
>>> Jerry
>>>
>>>> Then make sense now. Sorry for the noise.
>>>>
>>>> Jerry
>>>>
>>>>>
>>>>> Christian.
>>>>>
>>>>>>
>>>>>> Signed-off-by: Junwei Zhang <Jerry.Zhang@amd.com>
>>>>>> ---
>>>>>>   amdgpu/amdgpu_bo.c | 6 ------
>>>>>>   1 file changed, 6 deletions(-)
>>>>>>
>>>>>> diff --git a/amdgpu/amdgpu_bo.c b/amdgpu/amdgpu_bo.c
>>>>>> index 6f0baf1..5b91cfc 100644
>>>>>> --- a/amdgpu/amdgpu_bo.c
>>>>>> +++ b/amdgpu/amdgpu_bo.c
>>>>>> @@ -219,12 +219,6 @@ static int 
>>>>>> amdgpu_bo_export_flink(amdgpu_bo_handle bo)
>>>>>>       bo->flink_name = flink.name;
>>>>>> -    if (bo->dev->flink_fd != bo->dev->fd) {
>>>>>> -        struct drm_gem_close args = {};
>>>>>> -        args.handle = handle;
>>>>>> -        drmIoctl(bo->dev->flink_fd, DRM_IOCTL_GEM_CLOSE, &args);
>>>>>> -    }
>>>>>> -
>>>>>> pthread_mutex_lock(&bo->dev->bo_table_mutex);
>>>>>>       r = handle_table_insert(&bo->dev->bo_flink_names, 
>>>>>> bo->flink_name, bo);
>>>>>> pthread_mutex_unlock(&bo->dev->bo_table_mutex);
>>>>>
>>>> _______________________________________________
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>>
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