[v5.15 0/4] Backport MEMCG changes from v5.16

[Richard Weinberger <richard@xxxxxx>]

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.

 init/Kconfig    |    1 -
 mm/memcontrol.c | 1257 +++++++++++++++++++++++++----------------------
 2 files changed, 672 insertions(+), 586 deletions(-)

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2.26.2