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cgroup/cpuset-v1: Add deprecation messages to mem_exclusive and mem_hardwall

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The concept of exclusive memory affinity may require complex approaches
like with cpuset v2 cpu partitions. There is so far no implementation in
cpuset v2.
Specific kernel memory affinity may cause unintended (global)
bottlenecks like kmem limits.

Signed-off-by: Michal Koutný <mkoutny@suse.com>
Acked-by: Waiman Long <longman@redhat.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
This commit is contained in:
Michal Koutný 2025-03-11 13:36:22 +01:00 committed by Tejun Heo
parent a0ab145322
commit 3138192792
1 changed files with 2 additions and 0 deletions
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kernel/cgroup/cpuset-v1.c
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@ -465,9 +465,11 @@ static int cpuset_write_u64(struct cgroup_subsys_state *css, struct cftype *cft,
retval = cpuset_update_flag(CS_CPU_EXCLUSIVE, cs, val);
break;
case FILE_MEM_EXCLUSIVE:
pr_info_once("cpuset.%s is deprecated\n", cft->name);
retval = cpuset_update_flag(CS_MEM_EXCLUSIVE, cs, val);
break;
case FILE_MEM_HARDWALL:
pr_info_once("cpuset.%s is deprecated\n", cft->name);
retval = cpuset_update_flag(CS_MEM_HARDWALL, cs, val);
break;
case FILE_SCHED_LOAD_BALANCE: