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Tue, 11 Mar 2025 05:36:59 -0700 (PDT) From: =?UTF-8?q?Michal=20Koutn=C3=BD?= To: cgroups@vger.kernel.org, linux-kernel@vger.kernel.org Cc: =?UTF-8?q?Michal=20Koutn=C3=BD?= , Waiman Long , Tejun Heo , Johannes Weiner Subject: [PATCH v2 05/11] cgroup/cpuset-v1: Add deprecation messages to mem_exclusive and mem_hardwall Date: Tue, 11 Mar 2025 13:36:22 +0100 Message-ID: <20250311123640.530377-6-mkoutny@suse.com> X-Mailer: git-send-email 2.48.1 In-Reply-To: <20250311123640.530377-1-mkoutny@suse.com> References: <20250311123640.530377-1-mkoutny@suse.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 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 --- kernel/cgroup/cpuset-v1.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/kernel/cgroup/cpuset-v1.c b/kernel/cgroup/cpuset-v1.c index fea8a0cb7ae1d..b243bdd952d78 100644 --- a/kernel/cgroup/cpuset-v1.c +++ b/kernel/cgroup/cpuset-v1.c @@ -424,9 +424,11 @@ 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: -- 2.48.1