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Date:   Wed, 3 Aug 2022 08:53:59 +0200
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From:   Sebastian Andrzej Siewior <bigeasy@linutronix.de>
To:     David Oberhollenzer <goliath@infraroot.at>
Cc:     linux-rt-users@vger.kernel.org, williams@redhat.com, richard@nod.at
Subject: Re: [PATCH 0/4] Backport MEMCG changes from v5.17
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On 2022-07-12 13:22:34 [+0200], David Oberhollenzer 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 v5.17.

This isn't the series that was merged upstream:
| 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

any reason why not backport those?

Sebastian