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From: Roman Gushchin To: Namhyung Kim Cc: Alexei Starovoitov , Daniel Borkmann , Andrii Nakryiko , Martin KaFai Lau , Eduard Zingerman , Song Liu , Yonghong Song , John Fastabend , KP Singh , Stanislav Fomichev , Hao Luo , Jiri Olsa , LKML , bpf@vger.kernel.org, Andrew Morton , Christoph Lameter , Pekka Enberg , David Rientjes , Joonsoo Kim , Vlastimil Babka , Hyeonggon Yoo <42.hyeyoo@gmail.com>, linux-mm@kvack.org Subject: Re: [RFC/PATCH bpf-next 0/3] bpf: Add slab iterator and kfunc (v1) Message-ID: References: <20240925223023.735947-1-namhyung@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20240925223023.735947-1-namhyung@kernel.org> X-Migadu-Flow: FLOW_OUT X-Rspamd-Server: rspam12 X-Rspamd-Queue-Id: 15893C0006 X-Stat-Signature: 7u87dntaqcc18byaoh3nu81x1rodft6h X-Rspam-User: X-HE-Tag: 1727309785-962428 X-HE-Meta: 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 d1UrGO+x nTeCuynJqjpgEGyWjojwG63MgDa5M4q6lnQ1GuVis9I8Lu2HVNCtX/1AuYaBZco6kf4Dm9LFfxnr9EKxuJk2La/q8vMj9BEZ8vu6IzW0+6RePXGlze9yxa3kQeC6iCaqBW4QyJ+ZrB1JXMkFniBVNToBMNfUfL8qe+0QxgRzrvVBeslYKzDynLdhTEdd3wzzBcT/LtxYV03S8dkDdlvgluNDi0HrVN9WlmsAKmsHG9gL2VqbIsQvGDpbnv7PgLLyezmS9 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 Wed, Sep 25, 2024 at 03:30:20PM -0700, Namhyung Kim wrote: > Hello, > > I'm proposing a new iterator and a kfunc for the slab memory allocator > to get information of each kmem_cache like in /proc/slabinfo or > /sys/kernel/slab. Hello, Namhyung! I personally like the idea very much. With a growing number of kmem_caches /proc/slabinfo getting close to it's limit, so having a more flexible interface makes a lot of sense. > Maybe I need to call it kmem_cache iter but slab > was short and easier to call. :) I'd personally prefer kmem_cache or slab_cache, just in case somebody later would propose an iterator over individual slab objects within a kmem_cache. Acked-by: Roman Gushchin (mm/*) Thanks!