diff options
| -rw-r--r-- | Documentation/admin-guide/cgroup-v1/memory.rst | 8 | ||||
| -rw-r--r-- | mm/memcontrol-v1.c | 3 |
2 files changed, 9 insertions, 2 deletions
diff --git a/Documentation/admin-guide/cgroup-v1/memory.rst b/Documentation/admin-guide/cgroup-v1/memory.rst index 0042206414c8..270501db9f4e 100644 --- a/Documentation/admin-guide/cgroup-v1/memory.rst +++ b/Documentation/admin-guide/cgroup-v1/memory.rst @@ -86,6 +86,8 @@ Brief summary of control files. used. memory.force_empty trigger forced page reclaim memory.pressure_level set memory pressure notifications + This knob is deprecated and shouldn't be + used. memory.swappiness set/show swappiness parameter of vmscan (See sysctl's vm.swappiness) memory.move_charge_at_immigrate set/show controls of moving charges @@ -898,8 +900,10 @@ At reading, current status of OOM is shown. The number of processes belonging to this cgroup killed by any kind of OOM killer. -11. Memory Pressure -=================== +11. Memory Pressure (DEPRECATED) +================================ + +THIS IS DEPRECATED! The pressure level notifications can be used to monitor the memory allocation cost; based on the pressure, applications can implement diff --git a/mm/memcontrol-v1.c b/mm/memcontrol-v1.c index 3240f930d5f7..b37c0d870816 100644 --- a/mm/memcontrol-v1.c +++ b/mm/memcontrol-v1.c @@ -2000,6 +2000,9 @@ static ssize_t memcg_write_event_control(struct kernfs_open_file *of, event->register_event = mem_cgroup_oom_register_event; event->unregister_event = mem_cgroup_oom_unregister_event; } else if (!strcmp(name, "memory.pressure_level")) { + pr_warn_once("pressure_level is deprecated and will be removed. " + "Please report your usecase to [email protected] " + "if you depend on this functionality. \n"); event->register_event = vmpressure_register_event; event->unregister_event = vmpressure_unregister_event; } else if (!strcmp(name, "memory.memsw.usage_in_bytes")) { |