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cgroup/cpuset-v1: Add deprecation messages to memory_spread_page and memory_spread_slab

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There is MPOL_INTERLEAVE for user explicit allocations.
Deprecate spreading of allocations that users carry out unwittingly.
Use straight warning level for slab spreading since such a knob is
unnecessarily intertwined with slab allocator.

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 13:36:19 +01:00 committed by Tejun Heo
parent a0dd846257
commit 012c419f8d
1 changed files with 2 additions and 0 deletions
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kernel/cgroup/cpuset-v1.c
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@ -482,9 +482,11 @@ static int cpuset_write_u64(struct cgroup_subsys_state *css, struct cftype *cft,
cpuset_memory_pressure_enabled = !!val;
break;
case FILE_SPREAD_PAGE:
pr_info_once("cpuset.%s is deprecated\n", cft->name);
retval = cpuset_update_flag(CS_SPREAD_PAGE, cs, val);
break;
case FILE_SPREAD_SLAB:
pr_warn_once("cpuset.%s is deprecated\n", cft->name);
retval = cpuset_update_flag(CS_SPREAD_SLAB, cs, val);
break;
default: