Am 21.08.2017 um 14:31 schrieb Emil Velikov:
> Hi all,
>
> Can anyone skim through this patch?
>
> Thanks
> Emil
>
> On 22 January 2017 at 18:48, Emil Velikov <emil.l.velikov at gmail.com> wrote:
>> All one needs is to establish if dev->fd is the flink (primary/card)
>> node, rather than use DRM_IOCTL_GET_CLIENT to query the auth status.
>>
>> The latter is [somewhat] deprecated and incorrect. We need to know [and
>> store] the primary node FD, since we're going to use it [at a later
>> stage] for buffer import/export sharing.
>>
>> Cc: amd-gfx at lists.freedesktop.org
>> Signed-off-by: Emil Velikov <emil.l.velikov at gmail.com>
>> ---
>> Again not 100% sure but things look quite fishy as-is... The
>> conditionals might be off.
>>
>> Note: original code [and this one] do not consider if flink_fd is
>> already set, thus as we dup we'll leak it.
>> ---
>> amdgpu/amdgpu_device.c | 43 ++-----------------------------------------
>> 1 file changed, 2 insertions(+), 41 deletions(-)
>>
>> diff --git a/amdgpu/amdgpu_device.c b/amdgpu/amdgpu_device.c
>> index f4ede031..6f04d936 100644
>> --- a/amdgpu/amdgpu_device.c
>> +++ b/amdgpu/amdgpu_device.c
>> @@ -101,34 +101,6 @@ static int fd_compare(void *key1, void *key2)
>> return result;
>> }
>>
>> -/**
>> -* Get the authenticated form fd,
>> -*
>> -* \param fd - \c [in] File descriptor for AMD GPU device
>> -* \param auth - \c [out] Pointer to output the fd is authenticated or not
>> -* A render node fd, output auth = 0
>> -* A legacy fd, get the authenticated for compatibility root
>> -*
>> -* \return 0 on success\n
>> -* >0 - AMD specific error code\n
>> -* <0 - Negative POSIX Error code
>> -*/
>> -static int amdgpu_get_auth(int fd, int *auth)
>> -{
>> - int r = 0;
>> - drm_client_t client = {};
>> -
>> - if (drmGetNodeTypeFromFd(fd) == DRM_NODE_RENDER)
>> - *auth = 0;
>> - else {
>> - client.idx = 0;
>> - r = drmIoctl(fd, DRM_IOCTL_GET_CLIENT, &client);
>> - if (!r)
>> - *auth = client.auth;
>> - }
>> - return r;
>> -}
>> -
>> static void amdgpu_device_free_internal(amdgpu_device_handle dev)
>> {
>> amdgpu_vamgr_deinit(dev->vamgr);
>> @@ -175,8 +147,6 @@ int amdgpu_device_initialize(int fd,
>> struct amdgpu_device *dev;
>> drmVersionPtr version;
>> int r;
>> - int flag_auth = 0;
>> - int flag_authexist=0;
>> uint32_t accel_working = 0;
>> uint64_t start, max;
>>
>> @@ -185,19 +155,10 @@ int amdgpu_device_initialize(int fd,
>> pthread_mutex_lock(&fd_mutex);
>> if (!fd_tab)
>> fd_tab = util_hash_table_create(fd_hash, fd_compare);
>> - r = amdgpu_get_auth(fd, &flag_auth);
>> - if (r) {
>> - pthread_mutex_unlock(&fd_mutex);
>> - return r;
>> - }
>> dev = util_hash_table_get(fd_tab, UINT_TO_PTR(fd));
>> if (dev) {
>> - r = amdgpu_get_auth(dev->fd, &flag_authexist);
>> - if (r) {
>> - pthread_mutex_unlock(&fd_mutex);
>> - return r;
>> - }
>> - if ((flag_auth) && (!flag_authexist)) {
>> + if (drmGetNodeTypeFromFd(fd) == DRM_NODE_RENDER &&
>> + drmGetNodeTypeFromFd(dev->fd) == DRM_NODE_PRIMARY) {
First of all that looks inversed the logic. In other words we want to
keep the primary as flink_fd, not the render node one.
Second you are relaxing the test here which I can't judge if it's a good
idea or not.
Sorry that I can't help much more,
Christian.
>> dev->flink_fd = dup(fd);
>> }
>> *major_version = dev->major_version;
>> --
>> 2.11.0
>>
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