Sebastian, ----- Ursprüngliche Mail ----- > Von: "bigeasy" <bigeasy@xxxxxxxxxxxxx> > An: "richard" <richard@xxxxxx> > CC: linux-rt-users@xxxxxxxxxxxxxxx, williams@xxxxxxxxxx > Gesendet: Donnerstag, 23. Juni 2022 13:23:18 > Betreff: Re: [v5.15 0/4] Backport MEMCG changes from v5.16 > On 2022-06-22 13:05:02 [+0200], Richard Weinberger wrote: >> This is a backport of Sebastian's MEMCG changes to v5.15, with these patches >> applied, >> it is possible to use memory cgroups together with PREEMPT_RT on v5.15, just >> like on v5.16. >> >> Richard Weinberger (1): >> Allow MEMCG on PREEMPT_RT >> >> Sebastian Andrzej Siewior (3): >> mm/memcg: Disable threshold event handlers on PREEMPT_RT >> mm/memcg: Protect per-CPU counter by disabling preemption on >> PREEMPT_RT where needed. >> mm/memcg: Add a local_lock_t for IRQ and TASK object. > > So you took the four patches from v5.16 and added it to v5.15. Exactly. > I would prefer taking what ended up in v5.17 as of v5.17.1-rt17 > > - 0001-mm-memcg-Revert-mm-memcg-optimize-user-context-objec.patch > - 0002-mm-memcg-Disable-threshold-event-handlers-on-PREEMPT.patch > - 0003-mm-memcg-Protect-per-CPU-counter-by-disabling-preemp.patch > - 0004-mm-memcg-Opencode-the-inner-part-of-obj_cgroup_uncha.patch > - 0005-mm-memcg-Protect-memcg_stock-with-a-local_lock_t.patch > - 0006-mm-memcg-Disable-migration-instead-of-preemption-in-.patch > - 0007-mm-memcg-Add-missing-counter-index-which-are-not-upd.patch > - 0008-mm-memcg-Add-a-comment-regarding-the-release-obj.patch > - mm-memcg-Only-perform-the-debug-checks-on-PREEMPT_RT.patch > > since this is what finally landed upstream. So we don't have an > intermediate step from an not supported kernel in a supported one. Okay. Thanks, //richard
