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b=gaPhbL6t25/sEwNHAQ8Jy6wjqqMQ3/XZr0GQ9LPMxKKjS4pGqdErRE+c9rUfkrTtW 92pJXY2ZAP/Rqkb+a29RM9/y87g2m5f5P8obeyqdJJnvAK2kbPZlelcWD13cfbWLEJ RE3ocbRigecZBv1DEmMVONjbyxbNInaOgXBQj+Fttvk8DbIMc970U1zmycsYnHU3e0 /zKw/SznJRo3R/pOyD0legGS/Elx7xNmij7zL1QxL5g+yu16f2FF7m9kuf7KbxIFu0 muqxxfB8Q573cUOR7BkD6I+R8o+UuBa0Vg0vmj5pw5BDMOJvC9N0bkA1Xh5+QP343j pUVud4AafvE/w== Message-ID: Date: Tue, 7 Jul 2026 17:30:19 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v12 2/4] mm/page_owner: add NUMA node filter Content-Language: en-US To: Zhen Ni , akpm@linux-foundation.org Cc: surenb@google.com, mhocko@suse.com, jackmanb@google.com, hannes@cmpxchg.org, ziy@nvidia.com, linux-mm@kvack.org, linux-kernel@vger.kernel.org References: <20260707115411.1714314-1-zhen.ni@easystack.cn> <20260707115411.1714314-3-zhen.ni@easystack.cn> From: "Vlastimil Babka (SUSE)" Autocrypt: addr=vbabka@kernel.org; keydata= xsFNBFZdmxYBEADsw/SiUSjB0dM+vSh95UkgcHjzEVBlby/Fg+g42O7LAEkCYXi/vvq31JTB KxRWDHX0R2tgpFDXHnzZcQywawu8eSq0LxzxFNYMvtB7sV1pxYwej2qx9B75qW2plBs+7+YB 87tMFA+u+L4Z5xAzIimfLD5EKC56kJ1CsXlM8S/LHcmdD9Ctkn3trYDNnat0eoAcfPIP2OZ+ 9oe9IF/R28zmh0ifLXyJQQz5ofdj4bPf8ecEW0rhcqHfTD8k4yK0xxt3xW+6Exqp9n9bydiy tcSAw/TahjW6yrA+6JhSBv1v2tIm+itQc073zjSX8OFL51qQVzRFr7H2UQG33lw2QrvHRXqD Ot7ViKam7v0Ho9wEWiQOOZlHItOOXFphWb2yq3nzrKe45oWoSgkxKb97MVsQ+q2SYjJRBBH4 8qKhphADYxkIP6yut/eaj9ImvRUZZRi0DTc8xfnvHGTjKbJzC2xpFcY0DQbZzuwsIZ8OPJCc LM4S7mT25NE5kUTG/TKQCk922vRdGVMoLA7dIQrgXnRXtyT61sg8PG4wcfOnuWf8577aXP1x 6mzw3/jh3F+oSBHb/GcLC7mvWreJifUL2gEdssGfXhGWBo6zLS3qhgtwjay0Jl+kza1lo+Cv BB2T79D4WGdDuVa4eOrQ02TxqGN7G0Biz5ZLRSFzQSQwLn8fbwARAQABzSNWbGFzdGltaWwg QmFia2EgPHZiYWJrYUBrZXJuZWwub3JnPsLBsAQTAQoAWhYhBKlA1DSZLC6OmRA9UCJPp+fM gqZkBQJqFFy6GxSAAAAAAAQADm1hbnUyLDIuNSsxLjEyLDIsMgIbAwUJGtCBUAULCQgHAwUV CgkICwUWAgMBAAIeBQIXgAAKCRAiT6fnzIKmZJIUEADFx/tREzUImHrEwVHeSvDFmA7tJysI UVrlvrM09E7GIuzphzv7jYmo8n3ANpCczLEVr4G0syYQdTigaZgv3+FQDIIzhKih1IHhu1Ei XHlywNWKnQxxQEUNi5Mwx43wQz5XVw9F1A7gtKBKNtfogO511hAbrzagrYajyQacEJ/+sfhZ 9Da8ltHIXD8pcYaHUfQgEusCgmEd9+KrUwrTbckFKmYq5chuE6yJ4J0EmWknL096jIE6CnzF FRslQ3B1UKDjxVsm1ZHfir5NeWszLkTvGFsddFaWTgh8UycESG6VQzKXjjewXu2pG7YQYRpj QKm1W5X2TkwWkXRBZTmfmbhxIUMh3+zf5wQ463rSmDN/8v81tdqBtAW6rH/kzg1GvkaTHXn0 507yEHFzBksk2viAuIxxr7km8+/KARYLIdGtx30EG8cKzAUZOK6WqxtNCsXUJNrVE8CWrCaD icoNu7Fs1c5hmPHdSTnU48ce67449DdnO4neLSNhRiGlMHJgfJUmgrxu/hcYeOZ3haWmEQ2w uW1Mh01OHi8QZHCEyAbABrPs9GUgccc/4eYXX9hIgxfSkYzn8f+8NuIFPWl/0uTvjgqU29FQ SbzOLxHq9439Ox40G5mS5eZXRGxITYR+6TXvRGI6P/264jvflnr/pDGUttaikU+0W+1uxgKH cmYbEc7ATQRbGTU1AQgAn0H6UrFiWcovkh6EXVcl+SeqyO6JHOPm+e9Wu0Vw+VIUvXZVUVVQ La1PQDUi6j00ChlcR66g9/V0sPIcSutacPKfdKYOBvzd4rlhL8rfrdEsQw5ApZxrA8kYZVMh FmBRKAa6wos25moTlMKpCWzTH84+WO5+ziCTsTUZASAToz3RdunTD+vQcHj0GqNTPAHK63sf bAB2I0BslZkXkY1RLb/YhuA6E7JyEd2pilZOrIuBGl/5q2qSakgnAVFWFBR/DO27JuAksYnq +aH8vI0xGvwn75KqSk4UzAkDzWSmO4ZHuahKtQgZNsMYV+PGayRBX9b9zbldzopoLBdqHc4n jQARAQABwsF8BBgBCgAmAhsMFiEEqUDUNJksLo6ZED1QIk+n58yCpmQFAmfIHFQFCRYU6J8A CgkQIk+n58yCpmS2PA//bqN1LfcotmArgElsa+0EGZSQlYgK48pm8WAeTXTngudP9IJ4SuKY HR5RNjHcBeqN+Me0zxRqYzRb8nGanHEkDyf4Im8DQM8d6vbyU+FcPmG4skud4kgS1zMHnlVd SXfSIwKC/hKgdHG8aBV7545Lz9X6Iohea+94wneD0aw/hqF+QWewGZhWJriWAZtvEkzNjQOi 4U9F/trLten/x7bpphDSnDMKJtITbtzATT1Dq7o7VpIUK1nCTQALMuMjKCdi8OdU/+V+R3O4 0PXWvX8qrvqYapVbZ+9KqT74FsuB0Ya9uXwgBF2Q6cRuETZk5vqaqKxzqoQZCO8AOz/58j6O 2RHNy/mZEN+7tJ5Tsq42zVJ4jxsT8b9YplavCMsnBgDeRWhcbYhCyttoL7nYISyWg4kQYZ/P wIV3OuNv2f8iKYsxNsRuClOAF82+gvqOy1/1pprFjy8uo2pkoOrb63aOP3vO5VHnRKgra6dq NcaZ+c6J4H+nEJGi2SkHAUJz5oBzuThvPudLvPA/SK8sKoM01IRxSihev/S/5WLazXB1PGem OCbvzC1IjWJJraxiDJ5IygokapUa2RP7+WBR22skQ3SSl6G107QgWKSyTOGWEaRmV53vxQLV jXuCmzSSasTL60zq5yGrT4/DYQVSNEUiUbG4pYekxJujNeEDkUlky0Y= In-Reply-To: <20260707115411.1714314-3-zhen.ni@easystack.cn> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Rspam-User: X-Rspamd-Server: rspam08 X-Rspamd-Queue-Id: 4532380013 X-Stat-Signature: p98bt3bq93d75g1izuymy8gbyzygctuq X-HE-Tag: 1783438223-912562 X-HE-Meta: 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 IAlJgbIJ LkWGtFadwHZL+aqXu75q4tSDm5EayE6QaX2Lv1G2VD9ITtgnppVhxGVii7NLdZT1cdsw3+zh9kdg7uUoaqlZmE714KFlmoUGvEFl2MgQG2k5FHfnAcqWE1XgK0zAz+xlums9Nb1TKB4eDnkrCdRoqIak/f9v1AvuTfl1ELDbAvjeeW/R/4mzOYY9xSIHOnQHXwe1LNTXp45xxX72T7+U7slZUvEEX8ybDZ6qv/dYvy5n/FDs0mMoyG4wR5RngArQ4z25og5S6ySYJNNAdjqdIMxTZvefijmnzRKqrGqsIZ/PxQTOI34Tcix6Hg585xAs4/bINWvOB2pKYMhDNIBuOppL2qh6//v3zuCOH Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On 7/7/26 13:54, Zhen Ni wrote: > Add NUMA node filtering functionality to page_owner to allow filtering > pages by specific NUMA node(s). This is useful for NUMA-aware memory > allocation analysis and debugging. > > The filter supports flexible input formats: > - Single node: nid=0 > - Multiple nodes: nid=0,2,3 > - Node range: nid=0-3 > - Mixed format: nid=0,2-4,7 > > Example usage: > # Using the page_owner_filter tool (recommended) > ./page_owner_filter -n 0-3 > ./page_owner_filter -m stack_handle -n 0,2-4,7 > > The implementation uses per-file-descriptor filter state stored in > file->private_data, allowing each opener to have independent filter > configuration. It uses nodemask_t for efficient multi-node filtering and > nodelist_parse() for flexible input parsing. Node validity is verified > using nodes_subset() to reject nodes without memory. > > Signed-off-by: Zhen Ni > Tested-by: Zi Yan > Acked-by: Zi Yan Reviewed-by: Vlastimil Babka (SUSE)