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Mon, 15 Sep 2025 20:34:43 -0700 (PDT) MIME-Version: 1.0 References: <20250915230224.4115531-1-surenb@google.com> <20250915171112.f71a7606a7f9fd3054662bed@linux-foundation.org> <20250915195633.96236cecebd8777243a770bc@linux-foundation.org> In-Reply-To: <20250915195633.96236cecebd8777243a770bc@linux-foundation.org> From: Suren Baghdasaryan Date: Mon, 15 Sep 2025 20:34:33 -0700 X-Gm-Features: AS18NWAkqXfW0D9syyeJP9E39KHxrmmhUpYaOE7SM5QDAEH2ZhD9dv2yJcaAuws Message-ID: Subject: Re: [PATCH v2 1/1] alloc_tag: mark inaccurate allocation counters in /proc/allocinfo output To: Andrew Morton Cc: kent.overstreet@linux.dev, vbabka@suse.cz, hannes@cmpxchg.org, usamaarif642@gmail.com, rientjes@google.com, roman.gushchin@linux.dev, harry.yoo@oracle.com, shakeel.butt@linux.dev, 00107082@163.com, pyyjason@gmail.com, pasha.tatashin@soleen.com, souravpanda@google.com, linux-mm@kvack.org, linux-kernel@vger.kernel.org Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Stat-Signature: p5sed3cyiqq43nz91edqcy48emmsf9xz X-Rspam-User: X-Rspamd-Queue-Id: 38E7A1C0004 X-Rspamd-Server: rspam04 X-HE-Tag: 1757993685-829244 X-HE-Meta: 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 rREGz1cU fSNRxNJwQBQ6HRwFSiyjOMq6f7AZdW8tsu8mEWS2/KpUYZ/b87EZkvPelVeJaJB9GNNe1GNEOtSa4J3QT9ZsE+0MyoabeBkp8hyVa3gYqi+nnZm4wbRoBBiuv2F+rM8Lve1kbZzUtX3paoz4i+WraYEi5MyLHPQSCdyga+A9AUECYHexVJX+TCtAVXG8tnhvyz0WdtqhsKjQJPgGFI7iQ3TWbUqQlhB2Ec2JxKIC3X7W0ILDuUW0kLCa0MgAn3mGME5tkNX0GXdw/6Fd388FYTnvOK9qr3sAX58BF0CvP9JKrpeddsyV1/f2C03HnwiTgb/6/ 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 Mon, Sep 15, 2025 at 7:56=E2=80=AFPM Andrew Morton wrote: > > On Mon, 15 Sep 2025 19:48:14 -0700 Suren Baghdasaryan = wrote: > > > > > > Perhaps we can tell people what accurate:no actually means. It is a > > > rather disturbing thing to see! How worried should our users be abou= t > > > it? > > > > Right. How about adding a section like this: > > > > Supported markers in v2: > > accurate:no > > Absolute values of the counters in this line are not > > accurate because of the failure to allocate storage requi= red > > to track some of the allocations made at this location. > > Deltas in these counters are accurate, therefore counters > > can be used to track allocation size and count changes. > > > > > > If this looks good, > > looks awesome ;) > > > could you fold it into the existing patch or > > should I respin? > > A little fixlet would be preferred (by me, at least). Ok, should I post a fixup patch or you will do that in-place?