[PATCH v1 0/9] mm: memcg: put cgroup v1-specific memcg data under CONFIG_MEMCG_V1

Roman Gushchin
2024-06-28T21:03:53Z

This patchset puts all cgroup v1's members of struct mem_cgroup,
struct mem_cgroup_per_node and struct task_struct under
the CONFIG_MEMCG_V1 config option. If cgroup v1 support is not
required (and it's true for many cgroup users these days), it
allows to save a bit of memory and compile out some code, some
of which is on relatively hot paths. It also structures the code
a bit better by grouping cgroup v1-specific stuff in one place.

Roman Gushchin (9):
mm: memcg: move memcg_account_kmem() to memcontrol-v1.c
mm: memcg: factor out legacy socket memory accounting code
mm: memcg: guard cgroup v1-specific code in
mem_cgroup_print_oom_meminfo()
mm: memcg: gather memcg1-specific fields initialization in
memcg1_memcg_init()
mm: memcg: guard memcg1-specific fields accesses in mm/memcontrol.c
mm: memcg: put memcg1-specific struct mem_cgroup's members under
CONFIG_MEMCG_V1
mm: memcg: guard memcg1-specific members of struct mem_cgroup_per_node
mm: memcg: put struct task_struct::memcg_in_oom under CONFIG_MEMCG_V1
mm: memcg: put struct task_struct::in_user_fault under CONFIG_MEMCG_V1

include/linux/memcontrol.h | 147 +++++++++++++++++++------------------
include/linux/sched.h | 6 +-
mm/memcontrol-v1.c | 38 ++++++++++
mm/memcontrol-v1.h | 20 +++++
mm/memcontrol.c | 70 +++++++-----------
5 files changed, 164 insertions(+), 117 deletions(-)

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2.45.2.803.g4e1b14247a-goog