diff options
Diffstat (limited to 'drivers/gpu/drm/v3d/v3d_perfmon.c')
| -rw-r--r-- | drivers/gpu/drm/v3d/v3d_perfmon.c | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/drivers/gpu/drm/v3d/v3d_perfmon.c b/drivers/gpu/drm/v3d/v3d_perfmon.c index b4c3708ea781c..a1429b9684e09 100644 --- a/drivers/gpu/drm/v3d/v3d_perfmon.c +++ b/drivers/gpu/drm/v3d/v3d_perfmon.c @@ -313,6 +313,9 @@ static int v3d_perfmon_idr_del(int id, void *elem, void *data) if (perfmon == v3d->active_perfmon) v3d_perfmon_stop(v3d, perfmon, false); + /* If the global perfmon is being destroyed, set it to NULL */ + cmpxchg(&v3d->global_perfmon, perfmon, NULL); + v3d_perfmon_put(perfmon); return 0; @@ -398,6 +401,9 @@ int v3d_perfmon_destroy_ioctl(struct drm_device *dev, void *data, if (perfmon == v3d->active_perfmon) v3d_perfmon_stop(v3d, perfmon, false); + /* If the global perfmon is being destroyed, set it to NULL */ + cmpxchg(&v3d->global_perfmon, perfmon, NULL); + v3d_perfmon_put(perfmon); return 0; @@ -457,3 +463,34 @@ int v3d_perfmon_get_counter_ioctl(struct drm_device *dev, void *data, return 0; } + +int v3d_perfmon_set_global_ioctl(struct drm_device *dev, void *data, + struct drm_file *file_priv) +{ + struct v3d_file_priv *v3d_priv = file_priv->driver_priv; + struct drm_v3d_perfmon_set_global *req = data; + struct v3d_dev *v3d = to_v3d_dev(dev); + struct v3d_perfmon *perfmon; + + if (req->flags & ~DRM_V3D_PERFMON_CLEAR_GLOBAL) + return -EINVAL; + + perfmon = v3d_perfmon_find(v3d_priv, req->id); + if (!perfmon) + return -EINVAL; + + /* If the request is to clear the global performance monitor */ + if (req->flags & DRM_V3D_PERFMON_CLEAR_GLOBAL) { + if (!v3d->global_perfmon) + return -EINVAL; + + xchg(&v3d->global_perfmon, NULL); + + return 0; + } + + if (cmpxchg(&v3d->global_perfmon, NULL, perfmon)) + return -EBUSY; + + return 0; +} |