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b=kly87QeWZT/wrbptR1YPxy1l9gyVEOhvNZZmEaevtRPT9WyrvZ0TX/4+fp6YZ7aiQ afAh/kZ7hLMkf8CdrnaxRQeBQ+vnOjBT4liAml1ERCct5+1CFWyxZ4uBOdQicDrROD gRjB2u5eTm/qsBQse/skOXLuIfmS6EB7pL6ZkklPLOBw5wiIX00+2l5CRJrtz2QLlA hvNVejusVTbhm3bvR/PInaoduM3LlFHlrAFsoFTmFlQRRf59XWc4E1QguZkSoAwF1k sbn+dhQN1ND+j3porT3PrSJizbAMCdW/Y8zn8uT4C7Qf290YS0GAHbcfQHpyC6CaU6 UB+VG3EAUGLqQ== From: Pratyush Yadav To: Pasha Tatashin Cc: Pratyush Yadav , jasonmiu@google.com, graf@amazon.com, changyuanl@google.com, rppt@kernel.org, dmatlack@google.com, rientjes@google.com, corbet@lwn.net, rdunlap@infradead.org, ilpo.jarvinen@linux.intel.com, kanie@linux.alibaba.com, ojeda@kernel.org, aliceryhl@google.com, masahiroy@kernel.org, akpm@linux-foundation.org, tj@kernel.org, yoann.congal@smile.fr, mmaurer@google.com, roman.gushchin@linux.dev, chenridong@huawei.com, axboe@kernel.dk, mark.rutland@arm.com, jannh@google.com, vincent.guittot@linaro.org, hannes@cmpxchg.org, dan.j.williams@intel.com, david@redhat.com, joel.granados@kernel.org, rostedt@goodmis.org, anna.schumaker@oracle.com, song@kernel.org, zhangguopeng@kylinos.cn, linux@weissschuh.net, linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, linux-mm@kvack.org, gregkh@linuxfoundation.org, tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, dave.hansen@linux.intel.com, x86@kernel.org, hpa@zytor.com, rafael@kernel.org, dakr@kernel.org, bartosz.golaszewski@linaro.org, cw00.choi@samsung.com, myungjoo.ham@samsung.com, yesanishhere@gmail.com, Jonathan.Cameron@huawei.com, quic_zijuhu@quicinc.com, aleksander.lobakin@intel.com, ira.weiny@intel.com, andriy.shevchenko@linux.intel.com, leon@kernel.org, lukas@wunner.de, bhelgaas@google.com, wagi@kernel.org, djeffery@redhat.com, stuart.w.hayes@gmail.com Subject: Re: [RFC v2 11/16] luo: luo_sysfs: add sysfs state monitoring In-Reply-To: References: <20250515182322.117840-1-pasha.tatashin@soleen.com> <20250515182322.117840-12-pasha.tatashin@soleen.com> Date: Fri, 13 Jun 2025 17:13:43 +0200 Message-ID: User-Agent: Gnus/5.13 (Gnus v5.13) MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-Rspamd-Server: rspam12 X-Rspamd-Queue-Id: 506A118001E X-Stat-Signature: cy1j85hd9wph7pjnwpbywg8kfsmuktwf X-Rspam-User: X-HE-Tag: 1749827633-532428 X-HE-Meta: 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 ZxSYYkQX vaiOtRLCgFV3msEzXcXjSPmvaT29rGxovgaZv8usx1Lc/aTtkI1LLYg0gZIE6qgW/WVQNGHsXO9JHNBpKFY7Tn87ZfYddS0Jnlkjr8vx4eoB9T272bw1Pu5isCKE4vMfvh2A2Pu5IZPD0m1QkJsa3ZiXglhclsyV+jHdiXmJn29wi4ej0uWGZCMrJN40LIe9gAvonTLSA5fcNFa02b89CEtWEBNJQ5FU1TmidYQXA/h6g0U6PJSRiT52ZRyLbFvBrNSNveA1e30s459RlegKpuczJ9Xils5f1bVKaAeVUZZLwKU9zyfGWcpaSBAw6aOwN8Z9o6Ob9Rw5fkhowjSzhakIbFOUmbMBRNNfblX0kuW3/gl8= 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: On Sun, Jun 08 2025, Pasha Tatashin wrote: > On Thu, Jun 5, 2025 at 12:20=E2=80=AFPM Pratyush Yadav wrote: >> >> On Thu, May 15 2025, Pasha Tatashin wrote: >> >> > Introduce a sysfs interface for the Live Update Orchestrator >> > under /sys/kernel/liveupdate/. This interface provides a way for >> > userspace tools and scripts to monitor the current state of the LUO >> > state machine. >> >> I am not sure if adding and maintaining a new UAPI that does the same >> thing is worth it. Can't we just have commandline utilities that can do >> the ioctls and fetch the LUO state, and those can be called from tools >> and scripts? >> > > This is based on discussion from SystemD people. It is much simpler > for units to check the current 'state' via sysfs, and act accordingly. Ok, fair enough. [...] --=20 Regards, Pratyush Yadav