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 0uebZ6sr 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 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 15-Aug-25 7:26 AM, Huang, Ying wrote: > Bharata B Rao writes: > >> This introduces a sub-system for collecting memory access >> information from different sources. It maintains the hotness >> information based on the access history and time of access. >> >> Additionally, it provides per-lowertier-node kernel threads >> (named kpromoted) that periodically promote the pages that >> are eligible for promotion. >> >> Sub-systems that generate hot page access info can report that >> using this API: >> >> int pghot_record_access(u64 pfn, int nid, int src, >> unsigned long time) >> >> @pfn: The PFN of the memory accessed >> @nid: The accessing NUMA node ID >> @src: The temperature source (sub-system) that generated the >> access info >> @time: The access time in jiffies > > How will the page hotness information gather with NUMA balancing hint > page fault be expressed with this interface? Something like this can be done for reporting accesses detected by NUMA balancing - https://lore.kernel.org/linux-mm/20250616133931.206626-5-bharata@amd.com/ However we need to bypass the hot page threshold detection and rate limiting and have the same or similar functionality implemented within this patchset. Regards, Bharata.