On Thu, Apr 21, 2016 at 03:04:52PM +0100, Tvrtko Ursulin wrote: > > Hi, > > On 20/04/16 12:17, ankitprasad.r.sharma@xxxxxxxxx wrote: > >+ mutex_unlock(&dev->struct_mutex); > >+ > >+ seq_printf(m, "Total size of the GTT: %llu bytes\n", > >+ arg.aper_size); > >+ seq_printf(m, "Available space in the GTT: %llu bytes\n", > >+ arg.aper_available_size); > >+ seq_printf(m, "Total space in the mappable aperture: %llu bytes\n", > >+ arg.map_total_size); > >+ seq_printf(m, "Available space in the mappable aperture: %llu bytes\n", > >+ map_space); > >+ seq_printf(m, "Single largest space in the mappable aperture: %llu bytes\n", > >+ map_largest); > >+ seq_printf(m, "Available space for fences: %llu bytes\n", > >+ fence_space); > >+ seq_printf(m, "Single largest fence available: %llu bytes\n", > >+ fence_largest); > >+ > >+ return 0; > >+} > >+ > > In general I find this a lot of code for a feature of questionable > utility. As such I would prefer someone really stated the need for > this and explained how it really is useful - even though whetever > number they get from this may be completely irrelevant by the time > it is acted upon. Yes, with the exception of the size of the mappable aperture, this is really is debug info. It will get automatically dumped by userspace when it sees an ENOSPC, and that may prove enough to solve the riddle of why it failed. However, this information is terrible outdated and now longer of such relevance. As for the mappable aperture size, there has been a request many years ago! could we provide it without resorting to a privilege operation. I guess by know that request has died out - but there is still the issue with libpciassess that make it unsuitable for use inside a library where one may want to avoid it and use a simple ioctl on the device you already have open. Yes, it is meh. -Chris -- Chris Wilson, Intel Open Source Technology Centre _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
