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Thu, 29 Feb 2024 06:27:00 -0800 Received: from pek-lpd-ccm6.wrs.com (147.11.1.11) by ala-exchng01.corp.ad.wrs.com (147.11.82.252) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.35 via Frontend Transport; Thu, 29 Feb 2024 06:26:56 -0800 From: Xiongwei Song To: , , , , CC: , , , , , , , , , Subject: [PATCH RESEND 2/2] cgroup/cpuset: Mark memory_spread_slab as obsolete Date: Thu, 29 Feb 2024 22:26:45 +0800 Message-ID: <20240229142645.1327831-2-xiongwei.song@windriver.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240229142645.1327831-1-xiongwei.song@windriver.com> References: <20240229142645.1327831-1-xiongwei.song@windriver.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Proofpoint-ORIG-GUID: musNlEUIeLC4UiknxofRDHvGthDzMcmt X-Proofpoint-GUID: musNlEUIeLC4UiknxofRDHvGthDzMcmt X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.1011,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2024-02-29_02,2024-02-29_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 phishscore=0 priorityscore=1501 suspectscore=0 impostorscore=0 mlxscore=0 spamscore=0 adultscore=0 malwarescore=0 bulkscore=0 mlxlogscore=985 lowpriorityscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2402120000 definitions=main-2402290111 X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1792243845294756408 X-GMAIL-MSGID: 1792243845294756408 We've removed the SLAG allocator, cpuset_do_slab_mem_spread() and SLAB_MEM_SPREAD, memory_spread_slab is a no-op now. We can mark memory_spread_slab as obsolete in case someone still wants to use it after cpuset_do_slab_mem_spread() removed. For more details, please check [1]. [1] https://lore.kernel.org/lkml/32bc1403-49da-445a-8c00-9686a3b0d6a3@redhat.com/T/#m8e292e21b00f95a4bb8086371fa7387fa4ea8f60 Signed-off-by: Xiongwei Song --- Sorry, I made a mistake with linux-mm list. Correct linux-mmc to linux-mm. --- Documentation/admin-guide/cgroup-v1/cpusets.rst | 2 +- kernel/cgroup/cpuset.c | 3 +++ 2 files changed, 4 insertions(+), 1 deletion(-) diff --git a/Documentation/admin-guide/cgroup-v1/cpusets.rst b/Documentation/admin-guide/cgroup-v1/cpusets.rst index ae646d621a8a..88d0e7fa2ee0 100644 --- a/Documentation/admin-guide/cgroup-v1/cpusets.rst +++ b/Documentation/admin-guide/cgroup-v1/cpusets.rst @@ -179,7 +179,7 @@ files describing that cpuset: - cpuset.mem_hardwall flag: is memory allocation hardwalled - cpuset.memory_pressure: measure of how much paging pressure in cpuset - cpuset.memory_spread_page flag: if set, spread page cache evenly on allowed nodes - - cpuset.memory_spread_slab flag: if set, spread slab cache evenly on allowed nodes + - cpuset.memory_spread_slab flag: IT'S OBSOLETE. Please don't use it anymore - cpuset.sched_load_balance flag: if set, load balance within CPUs on that cpuset - cpuset.sched_relax_domain_level: the searching range when migrating tasks diff --git a/kernel/cgroup/cpuset.c b/kernel/cgroup/cpuset.c index ba36c073304a..728d06fe9382 100644 --- a/kernel/cgroup/cpuset.c +++ b/kernel/cgroup/cpuset.c @@ -3897,6 +3897,9 @@ static struct cftype legacy_files[] = { }, { + /* It's obsolete. Please don't use it anymore. We will remove it + * in the future. + */ .name = "memory_spread_slab", .read_u64 = cpuset_read_u64, .write_u64 = cpuset_write_u64,