On 05/08/2017 01:25 AM, Daniel Vetter wrote: > On Sun, May 07, 2017 at 07:52:14PM -0600, Jens Axboe wrote: >> On 05/07/2017 11:56 AM, Daniel Vetter wrote: >>> On Sun, May 7, 2017 at 7:46 PM, Jens Axboe <axboe@xxxxxxxxx> wrote: >>>> On 05/07/2017 11:12 AM, ville.syrjala@xxxxxxxxxxxxxxx wrote: >>>>> From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx> >>>>> >>>>> Add a new Kconfig option to enable/disable the extra warnings >>>>> from the vblank evade code. For now we'll keep the warning >>>>> about an actually missed vblank always enabled as that can have >>>>> an actual user visible impact. But if we miss the deadline >>>>> othrwise there's no real need to bother the user with that. >>>>> We'll want these warnings enabled during development however >>>>> so that we can catch regressions. >>>>> >>>>> Based on the reports it looks like this is still very easy >>>>> to hit on SKL, so we have more work ahead of us to optimize >>>>> the crtiical section further. >>>> >>>> Shouldn't it just be a debug printk or something instead, so that normal >>>> people don't see it, but the folks that turn on debugging can get the >>>> info they need? Seems silly to add a kconfig option for this. >>> >>> I guess we could keep it as debug for users, but we want to make this >>> a hard failure on our CI machines. Kconfig knob is the easiest to roll >>> out to all machines. >> >> Wouldn't a module parameter be more useful then, as an opt-in >> to catch these violations. >> >> Nobody is going to know wtf to set this kconfig option to. > > They're all hidden behind an overall i915 debugging option which tells you > not to enable it. You won't see this. OK, that does improve things a bit. -- Jens Axboe _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel
