bybrooklyn/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-04-18 14:53:58 -04:00
Code Issues Packages Projects Releases Wiki Activity

drm/syncobj: Add a reset ioctl (v3)

Browse Source 
This just resets the dma_fence to NULL so it looks like it's never been
signaled.  This will be useful once we add the new wait API for allowing
wait on "submit and signal" behavior.

v2:
 - Take an array of sync objects (Dave Airlie)
v3:
 - Throw -EINVAL if pad != 0

Signed-off-by: Jason Ekstrand <jason@jlekstrand.net>
Reviewed-by: Christian König <christian.koenig@amd.com> (v1)
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Jason Ekstrand
2017-08-28 14:10:27 -07:00
committed by Dave Airlie
parent 3e6fb72d6c
commit aa4035d2c7
4 changed files with 44 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

33
drivers/gpu/drm/drm_syncobj.c
View File

@@ -885,3 +885,36 @@ drm_syncobj_wait_ioctl(struct drm_device *dev, void *data,
return ret;
}
int
drm_syncobj_reset_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_private)
{
struct drm_syncobj_array *args = data;
struct drm_syncobj **syncobjs;
uint32_t i;
int ret;
if (!drm_core_check_feature(dev, DRIVER_SYNCOBJ))
return -ENODEV;
if (args->pad != 0)
return -EINVAL;
if (args->count_handles == 0)
return -EINVAL;
ret = drm_syncobj_array_find(file_private,
u64_to_user_ptr(args->handles),
args->count_handles,
&syncobjs);
if (ret < 0)
return ret;
for (i = 0; i < args->count_handles; i++)
drm_syncobj_replace_fence(syncobjs[i], NULL);
drm_syncobj_array_free(syncobjs, args->count_handles);
return 0;
}