在 2019/7/18 21:15, Zhou, David(ChunMing) 写道: > 在 2019/7/18 21:10, Chris Wilson 写道: >> Quoting Chunming Zhou (2019-07-18 14:04:09) >>> 在 2019/7/18 19:18, Chris Wilson 写道: >>>> Quoting Chunming Zhou (2019-07-18 12:13:39) >>>>> if WAIT_FOR_SUBMIT isn't set and in the meanwhile no underlying fence on syncobj, >>>>> then return non-block error code to user sapce. >>>> Block device required? >>> Yes, if WAIT_FOR_SUBMIT is set, then that will block device. >> No, the error message is that it requires a "block device", not that it >> will block the device, which is EWOULDBLOCK. Ah, I think I don't want EWOULDBLOCK, which will try again and again ioctl, that is not my movitation. I just need a meaningful value to identify the underlying fence isn't ready on syncobj. Because it is in 'else' case, ENOTBLK is correct to say here need block but WAIT_FOR_SUBMIT isn't set. -David > OK, I got your mean. > > Any other possile value suggestted? > > -David > >> -Chris _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel
