On Thu 13-08-20 20:31:21, Peter Zijlstra wrote: > On Thu, Aug 13, 2020 at 09:29:04AM -0700, Paul E. McKenney wrote: [...] > > 3. Reusing existing GFP_ flags/values/whatever to communicate > > the raw-context information that was to be communicated by > > the new GFP_ flag. > > > > 4. Making lockdep forgive acquiring spinlocks while holding > > raw spinlocks, but only in CONFIG_PREEMPT_NONE=y kernels. > > > > Am I missing anything? > > How would 4 solve anything?
Nothing on its own but along with http://lkml.kernel.org/r/20200813075027.gd9...@dhcp22.suse.cz it would allow at least _some_ NOWAIT semantic for RT atomic contexts and prevent from lockdep false positives for !RT trees. -- Michal Hocko SUSE Labs
