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t=1783438591; bh=4C7m57sAU2ajhrVz3LWwibeLymdgwyRapN4fL3ROCgg=; h=Date:Subject:To:Cc:References:From:In-Reply-To; b=Q85y9eWlkd19L9q3iVIFvdYAaNenM4MJZS6TC/0pjT/UDCvgPodlCDcSxpTkcey03 9tKPHBkYzanpRQmeN+v6Bcaz5orxgOrHhMMXv8/MqPoudU8nVZA4A8Ea3U5RafqcnT +9TkbCyi8UQ1VsspPRgXM33y0nk3uMJgXLx/gwxxYLDyTUA2Uo43bqrzVcW60UeawL XsifpcDHbrpcYsXVG/XTmPB1lG32da44Ty9hWXBMHjbf5+GO3B/BT92q6BLJqslPD+ U03yv3t3UvhKq2QO3hUNQwnsf58MppwbvDmC6lsGW4e5Z/kxsJGqRahScxnAMtZeOU YDkTGGayVPxnQ== Message-ID: <56608c36-634a-4b30-b29b-b3bcb5067ce1@kernel.org> Date: Tue, 7 Jul 2026 17:36:27 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v12 3/4] tools/mm: add page_owner_filter userspace tool 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> <20260707115411.1714314-4-zhen.ni@easystack.cn> From: "Vlastimil Babka (SUSE)" Autocrypt: addr=vbabka@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit X-Rspam-User: X-Rspamd-Server: rspam11 X-Rspamd-Queue-Id: 7843814001A X-Stat-Signature: ca544x8ruxnzh3y4zrrd69xiypuhz5wu X-HE-Tag: 1783438592-83157 X-HE-Meta: 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 WSMSNsD1 RpugKxJ9HjcBU1I9CkC5z1IVlThTzCyO/yuqQ2aoX4t5rkdnfoMHvRfQgtcBdX9qb7BDDJCi72oE4IUCnbVifbv+u84zw1agq1cRQaAesCfJX4LGA4yYkE/UxLrmTkdPCMVfCPmDDIl5G70nrkQG86bfKj3blA4xxzHsy/zHZLDCLBJ+Vf5rmPJcElP9ga6KwUOOoIPVZlDPXvm9huA7vnsopSGIBoKGYCmsSrZtLMcg5CD1j8PIzxoILAJT4FxO4EooCXKPAG/nyY0GnQhDh74aj9k9bbOEVIP6os5fwF0v0uzs3+i7zvW1Bp0cqaxe3H0ag9coCtcNLJmFIbfJKbH8nEMMhDBiguL/X 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 a userspace filtering tool for page_owner that supports per-fd > filtering with print_mode and NUMA node filters. > > Features: > - Three print modes: stack (default), handle, stack_handle > - NUMA node filtering with flexible formats (single: 0, multiple: 0,1,2, > range: 0-3, mixed: 0,2-3) > - Per-file-descriptor filter state for independent filtering > > Usage examples: > # Filter by print mode > ./page_owner_filter -m handle > ./page_owner_filter -m stack_handle > > # Filter by NUMA node > ./page_owner_filter -n 0 > ./page_owner_filter -n 0-3 > > # Combined filters > ./page_owner_filter -m stack -n 0,1,2 > ./page_owner_filter -m handle -n 0,2-3 > > The tool validates inputs before sending commands to the kernel and > provides clear error messages when the kernel does not support > per-fd filtering. > > Signed-off-by: Zhen Ni > Tested-by: Zi Yan Acked-by: Vlastimil Babka (SUSE)