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([2601:188:c100:5710:315f:57b3:b997:5fca]) by smtp.gmail.com with ESMTPSA id d75a77b69052e-4765f877398sm50151521cf.4.2025.03.11.08.07.04 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 11 Mar 2025 08:07:04 -0700 (PDT) From: Waiman Long X-Google-Original-From: Waiman Long Message-ID: Date: Tue, 11 Mar 2025 11:07:03 -0400 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2 02/11] cgroup/cpuset-v1: Add deprecation messages to memory_spread_page and memory_spread_slab To: =?UTF-8?Q?Michal_Koutn=C3=BD?= , cgroups@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Tejun Heo , Johannes Weiner References: <20250311123640.530377-1-mkoutny@suse.com> <20250311123640.530377-3-mkoutny@suse.com> Content-Language: en-US In-Reply-To: <20250311123640.530377-3-mkoutny@suse.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit On 3/11/25 8:36 AM, Michal Koutný wrote: > 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 > --- > 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 9d47b20c03c4b..fea8a0cb7ae1d 100644 > --- a/kernel/cgroup/cpuset-v1.c > +++ b/kernel/cgroup/cpuset-v1.c > @@ -441,9 +441,11 @@ 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: Acked-by: Waiman Long