Date: Thu, 21 Nov 2019 19:54:50 +0100 From: Hans Petter Selasky <hps@selasky.org> To: Warner Losh <imp@bsdimp.com>, "freebsd-arch@freebsd.org" <freebsd-arch@freebsd.org> Subject: Re: Killing Giant for 13 Message-ID: <9460794e-9992-1b80-5bfc-e807204bd22f@selasky.org> In-Reply-To: <CANCZdfr0CpDBQ6QWJ_CTtOLW6EwAke_Vr_imqa5=GBzRAoa6eA@mail.gmail.com> References: <CANCZdfr0CpDBQ6QWJ_CTtOLW6EwAke_Vr_imqa5=GBzRAoa6eA@mail.gmail.com>
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On 2019-11-21 18:43, Warner Losh wrote: > I'd like to kill Giant in 13 and schedule a firm removal date. > > The issues are (a) old drivers that aren't MP safe (b) some console / ATKBD > interactions (c) newbus and (d) a few stays that haven't been characterized. > > (a) should be deleted or updated before the deadline > (b) should be fixed by $SOMEONE[tm] > (c) there's some work underway to refine the locking protocols to allow one > to not have Giant held (there's real questions about how effective it is > when things sleep or contend) > (d) I'm researching. > > Would there be support for setting a firm deadline for Giant removal of > around June 2020? This would be months ahead of a speculative 13.0 timeline > (Earliest would be December 2020, latest would be maybe October 2021, the > exact details aren't super relevant for a June target date). > > This is a preliminary inquiry to get a feel for support for this option and > to gather additional issues and requirements. Comments? > +1 I'd like to be added as reviewer for Giant removal patches. --HPS
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