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[109.81.31.43]) by smtp.gmail.com with UTF8SMTPSA id ffacd0b85a97d-3d6cf485eb7sm20721268f8f.3.2025.09.05.02.17.11 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 05 Sep 2025 02:17:11 -0700 (PDT) Date: Fri, 5 Sep 2025 11:17:10 +0200 From: Michal Hocko To: kirill@shutemov.name Cc: Andrew Morton , David Hildenbrand , Lorenzo Stoakes , "Liam R . Howlett" , Vlastimil Babka , Mike Rapoport , Suren Baghdasaryan , linux-mm@kvack.org, Usama Arif , Kiryl Shutsemau Subject: Re: [PATCH] tools/mm: Add madvise tool Message-ID: References: <20250904175729.1029735-1-kirill@shutemov.name> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20250904175729.1029735-1-kirill@shutemov.name> X-Rspamd-Server: rspam12 X-Rspamd-Queue-Id: C3BC51C0006 X-Stat-Signature: eqyxo9no6zdqoxzix6oh9u7fabh99ty9 X-Rspam-User: X-HE-Tag: 1757063833-365977 X-HE-Meta: U2FsdGVkX18ByQ/l+fRd8kfanGOmQIvXfPTnOpVq7/Qdb6xdSm3dPx9gs6vY8iBs40FhnrSol6Vx9l6yWgq8Y4VEBXUulF7/OeJPDLA5wilEcHIGqPx1GBOdzvl8vFIu4jTCJAiXyiVenliz0iwbcx3iIgrf1d6AbbW5PrkIr5Ztch4w+cha6niUEVEoBqmhYdYGY2om3glmkLTZCuFU0Lj9ROAZt/m2kKJGgjj6XxpKkK6ZkJ2/ZqtA/zPtQIKrHyJnE3qmMQfDLaDLGURHCnZt7oybDmZJoEtf8+TJ1nUcO6eKMJcqiORBVgtLAfctzZDpPCi+XEa+6tY0Ug8LMyKp899Qh+T8vkuTMDYGvoJIWFOKGNfvc/nqz2yZkbe0YJoHG65GA1fGTiATQ1Xt7xjQhzX6F1rrGEcNzETG3RZL62w18rK3Dy6eOmBBcnGauUuwK2cBCt4f58SubtzgZpT3C61jZ3DxNBWOPe9OfpTZ1wfuJFGt4NIi74vI7/WNetO/WXe6eZwm+GSbBBNhhcpuXqnEvVqqH6Z+XXkFbMycZbDn/6YfBKic/Cj9uG83C250OEu9gV63kCSxo7p56yntdJDQoF/DqnYACd7TgSwROm4OW8+ar60pV7OxnItFe3a/Zv6luAoO3MY0fCJ55LM4cafB+mXyXMkQ7ljm4ikr1N5t31BMyC7zfefreJhtH0MKuoFx9v6lt07Q+xmF5wy2FMKeWJoj+5rHb8mBNvA0EloeCdxsMLp+FvDwBabsW5RoZ3MyN4sC2gvQUIJR5fcOjfV5e4rriOVm9SNPwSCJUz7DZfMq+FvcrDnaUgiaM7hLlsAcpvAm9pHuSBC7S89tZTFSq7eOsEXi/ZGWbJ0nl/Czj3VMGV8es/ezYx7lzYUW9QTSCuSjHAASDsyVE1SlSurEkCluxtwX0uxVuIKFmqblMuiYcO3hwM3qYqik5B/olp0uVTf06w+0TAa uYqUZaSm Ti0hs0/rnlzNkR6AUXdrR7iTNUiYVm3Gf9yV1E0sTDaYt4b3JKHxy9o6+xLyY0XfetZE8FT6spnWH8qWUpikBUkUd8MI0lvYL7a9TgETMibEElMHbEaiNa5S38xG7iON1mTdw3LfmRhR6RRo30xYCXQe0Kvv9YVyAQaXWsb0NqhzA7gHQiah5eqb3QueLl6iq+xU1kxepLgVMHEj458tZJsP6njdSSDnX6VCineNrO5AIkJQFKkWQZRpTFDDK1kqbzZwUJ/3X5FoAxpydxGArrFLz3hWJmDJaU4czzloebJGq4Do6hGU8XIjEoworDEAouZ0og5mMcSD+eVL80TMoTOA0nQ== 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 Thu 04-09-25 18:57:29, Kirill A. Shutemov wrote: > From: Kiryl Shutsemau > > Add a simple tool that allows to issue an advice on a process or a file. > > It can be useful to experiment with effects of an advice on a workload > without modifying the workload itself. Is there any reason to have this in the tree? This seems like a very trivial tools that doesn't really need to be in a lockstep with the kernel source. Also would it make more sense to send the pidfd fd to the tool directly so that it can benefit from a racefree pid->fd translation? -- Michal Hocko SUSE Labs