From: "Michal Koutný" <mkoutny@suse.com>
To: cgroups@vger.kernel.org, linux-kernel@vger.kernel.org
Cc: "Michal Koutný" <mkoutny@suse.com>,
"Waiman Long" <longman@redhat.com>, "Tejun Heo" <tj@kernel.org>,
"Johannes Weiner" <hannes@cmpxchg.org>
Subject: [PATCH v2 06/11] cgroup/cpuset-v1: Add deprecation messages to memory_migrate
Date: Tue, 11 Mar 2025 13:36:23 +0100 [thread overview]
Message-ID: <20250311123640.530377-7-mkoutny@suse.com> (raw)
In-Reply-To: <20250311123640.530377-1-mkoutny@suse.com>
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@suse.com>
---
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:
--
2.48.1
next prev parent reply other threads:[~2025-03-11 12:37 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-03-11 12:36 [PATCH v2 00/11] cgroup v1 deprecation messages Michal Koutný
2025-03-11 12:36 ` [PATCH v2 01/11] cgroup/cpuset-v1: Add deprecation messages to sched_load_balance and memory_pressure_enabled Michal Koutný
2025-03-11 14:02 ` Waiman Long
2025-03-11 12:36 ` [PATCH v2 02/11] cgroup/cpuset-v1: Add deprecation messages to memory_spread_page and memory_spread_slab Michal Koutný
2025-03-11 15:07 ` Waiman Long
2025-03-11 12:36 ` [PATCH v2 03/11] cgroup/blkio: Add deprecation messages to reset_stats Michal Koutný
2025-03-11 12:36 ` [PATCH v2 04/11] cgroup: Print message when /proc/cgroups is read on v2-only system Michal Koutný
2025-03-11 12:36 ` [PATCH v2 05/11] cgroup/cpuset-v1: Add deprecation messages to mem_exclusive and mem_hardwall Michal Koutný
2025-03-11 15:08 ` Waiman Long
2025-03-11 12:36 ` Michal Koutný [this message]
2025-03-11 15:09 ` [PATCH v2 06/11] cgroup/cpuset-v1: Add deprecation messages to memory_migrate Waiman Long
2025-03-11 12:36 ` [PATCH v2 07/11] RFC cgroup/cpuset-v1: Add deprecation messages to sched_relax_domain_level Michal Koutný
2025-03-11 15:10 ` Waiman Long
2025-03-11 15:10 ` Waiman Long
2025-03-11 12:36 ` [PATCH v2 08/11] mm: Add transformation message for per-memcg swappiness Michal Koutný
2025-03-11 12:36 ` [PATCH v2 09/11] cgroup: Add deprecation message to legacy freezer controller Michal Koutný
2025-03-11 12:36 ` [PATCH v2 10/11] cgroup: Update file naming comment Michal Koutný
2025-03-11 12:36 ` [PATCH v2 11/11] blk-cgroup: Simplify policy files registration Michal Koutný
2025-03-11 18:56 ` [PATCH v2 00/11] cgroup v1 deprecation messages Jens Axboe
2025-03-11 19:23 ` Tejun Heo
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