* Steven Rostedt <rostedt@xxxxxxxxxxx> wrote: > On Tue, 19 Sep 2023 20:31:50 +0200 > Thomas Gleixner <tglx@xxxxxxxxxxxxx> wrote: > > > The removal of cond_resched() might cause latencies, but then I doubt > > that these museus pieces are used for real work :) > > We could simply leave the cond_resched() around but defined as nops for > everything but the "nostalgia club" to keep them from having any regressions. That's not a good idea IMO, it's an invitation for accelerated rate bitrot turning cond_resched() meaningless very quickly. We should remove cond_resched() - but probably not as the first step. They are conceptually independent of NEED_RESCHED_LAZY and we don't *have to* remove them straight away. By removing cond_resched() separately there's an easily bisectable point to blame for any longer latencies on legacy platforms, should any of them still be used with recent kernels. Thanks, Ingo
