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Mon, 26 May 2025 06:35:49 -0700 (PDT) Date: Mon, 26 May 2025 15:35:47 +0200 From: Michal =?utf-8?Q?Koutn=C3=BD?= To: Shakeel Butt Cc: Chen Yu , peterz@infradead.org, akpm@linux-foundation.org, mingo@redhat.com, tj@kernel.org, hannes@cmpxchg.org, corbet@lwn.net, mgorman@suse.de, mhocko@kernel.org, muchun.song@linux.dev, roman.gushchin@linux.dev, tim.c.chen@intel.com, aubrey.li@intel.com, libo.chen@oracle.com, kprateek.nayak@amd.com, vineethr@linux.ibm.com, venkat88@linux.ibm.com, ayushjai@amd.com, cgroups@vger.kernel.org, linux-doc@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, yu.chen.surf@foxmail.com Subject: Re: [PATCH v5 2/2] sched/numa: add statistics of numa balance task Message-ID: References: <7ef90a88602ed536be46eba7152ed0d33bad5790.1748002400.git.yu.c.chen@intel.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="pba5ial65ghy3cht" Content-Disposition: inline In-Reply-To: X-Rspamd-Server: rspam10 X-Rspamd-Queue-Id: 9275D2000A X-Stat-Signature: r1zb3h6e1w1sztes5efwhh3us7jin9nu X-Rspam-User: X-HE-Tag: 1748266551-790186 X-HE-Meta: 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 b1wdHCii 4EycJLWTOoXzjTwErq8i51MVqlu5lh5NedvCzapLjznBju/7R2vM3ZaMDSSQBmAexvppDWxfHx71veCI= X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: --pba5ial65ghy3cht Content-Type: text/plain; protected-headers=v1; charset=us-ascii Content-Disposition: inline Subject: Re: [PATCH v5 2/2] sched/numa: add statistics of numa balance task MIME-Version: 1.0 On Fri, May 23, 2025 at 04:42:50PM -0700, Shakeel Butt wrote: > Hmm these are scheduler events, how are these relevant to memory cgroup > or vmstat? Any reason to not expose these in cpu.stat? Good point. If I take it further -- this functionality needs neither memory controller (CONFIG_MEMCG) nor CPU controller (CONFIG_CGROUP_SCHED), so it might be technically calculated and exposed in _any_ cgroup (which would be same technical solution how cpu time is counted in cpu.stat regardless of CPU controller, cpu_stat_show()). Michal --pba5ial65ghy3cht Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQTd6mfF2PbEZnpdoAkt3Wney77BSQUCaDRuMQAKCRAt3Wney77B SW8BAP4t+Hvi0LKP9OmSUAPwS3bA8QPQUvrZoDQmC08aYtF5/gD/dmVgrB6xQ1yK HAuRq6/nLpVwAY1doEUJs9ch7iqtfQk= =/lHO -----END PGP SIGNATURE----- --pba5ial65ghy3cht--