Re: [PATCH v2 06/11] cgroup/cpuset-v1: Add deprecation messages to memory_migrate

[Waiman Long]

On 3/11/25 8:36 AM, Michal Koutný wrote:
> Memory migration (between cgroups) was given up in v2 due to performance
> reasons of its implementation. Migration between NUMA nodes within one
> memcg may still make sense to modify affinity at runtime though.
>
> Signed-off-by: Michal Koutný <mkoutny@xxxxxxxx>
> ---
>   kernel/cgroup/cpuset-v1.c | 1 +
>   1 file changed, 1 insertion(+)
>
> diff --git a/kernel/cgroup/cpuset-v1.c b/kernel/cgroup/cpuset-v1.c
> index b243bdd952d78..7c37fabcf0ba8 100644
> --- a/kernel/cgroup/cpuset-v1.c
> +++ b/kernel/cgroup/cpuset-v1.c
> @@ -436,6 +436,7 @@ static int cpuset_write_u64(struct cgroup_subsys_state *css, struct cftype *cft,
>   		retval = cpuset_update_flag(CS_SCHED_LOAD_BALANCE, cs, val);
>   		break;
>   	case FILE_MEMORY_MIGRATE:
> +		pr_info_once("cpuset.%s is deprecated\n", cft->name);
>   		retval = cpuset_update_flag(CS_MEMORY_MIGRATE, cs, val);
>   		break;
>   	case FILE_MEMORY_PRESSURE_ENABLED:
Acked-by: Waiman Long <longman@xxxxxxxxxx>