From: Vlastimil Babka <vbabka@suse.cz>
To: Namhyung Kim <namhyung@kernel.org>,
Alexei Starovoitov <ast@kernel.org>,
Daniel Borkmann <daniel@iogearbox.net>,
Andrii Nakryiko <andrii@kernel.org>
Cc: Martin KaFai Lau <martin.lau@linux.dev>,
Eduard Zingerman <eddyz87@gmail.com>, Song Liu <song@kernel.org>,
Yonghong Song <yonghong.song@linux.dev>,
John Fastabend <john.fastabend@gmail.com>,
KP Singh <kpsingh@kernel.org>,
Stanislav Fomichev <sdf@fomichev.me>, Hao Luo <haoluo@google.com>,
Jiri Olsa <jolsa@kernel.org>, LKML <linux-kernel@vger.kernel.org>,
bpf@vger.kernel.org, Andrew Morton <akpm@linux-foundation.org>,
Christoph Lameter <cl@linux.com>,
Pekka Enberg <penberg@kernel.org>,
David Rientjes <rientjes@google.com>,
Joonsoo Kim <iamjoonsoo.kim@lge.com>,
Roman Gushchin <roman.gushchin@linux.dev>,
Hyeonggon Yoo <42.hyeyoo@gmail.com>,
linux-mm@kvack.org, Arnaldo Carvalho de Melo <acme@kernel.org>,
Kees Cook <kees@kernel.org>,
"Paul E. McKenney" <paulmck@kernel.org>
Subject: Re: [PATCH v5 bpf-next 1/3] bpf: Add kmem_cache iterator
Date: Mon, 14 Oct 2024 17:25:52 +0200 [thread overview]
Message-ID: <99d33f0b-5991-4b23-908f-aabb9fdccb98@suse.cz> (raw)
In-Reply-To: <20241010232505.1339892-2-namhyung@kernel.org>
On 10/11/24 01:25, Namhyung Kim wrote:
> The new "kmem_cache" iterator will traverse the list of slab caches
> and call attached BPF programs for each entry. It should check the
> argument (ctx.s) if it's NULL before using it.
>
> Now the iteration grabs the slab_mutex only if it traverse the list and
> releases the mutex when it runs the BPF program. The kmem_cache entry
> is protected by a refcount during the execution.
>
> It includes the internal "mm/slab.h" header to access kmem_cache,
> slab_caches and slab_mutex. Hope it's ok to mm folks.
Yeah this paragraph can be dropped.
> Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Vlastimil Babka <vbabka@suse.cz> #slab
next prev parent reply other threads:[~2024-10-14 15:25 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-10-10 23:25 [PATCH v5 bpf-next 0/3] bpf: Add kmem_cache iterator and kfunc Namhyung Kim
2024-10-10 23:25 ` [PATCH v5 bpf-next 1/3] bpf: Add kmem_cache iterator Namhyung Kim
2024-10-11 18:33 ` Alexei Starovoitov
2024-10-11 19:13 ` Namhyung Kim
2024-10-11 18:44 ` Alexei Starovoitov
2024-10-11 19:41 ` Andrii Nakryiko
2024-10-11 19:43 ` Andrii Nakryiko
2024-10-14 15:25 ` Vlastimil Babka [this message]
2024-10-10 23:25 ` [PATCH v5 bpf-next 2/3] mm/bpf: Add bpf_get_kmem_cache() kfunc Namhyung Kim
2024-10-11 18:35 ` Alexei Starovoitov
2024-10-11 19:14 ` Namhyung Kim
2024-10-14 18:13 ` Namhyung Kim
2024-10-15 1:50 ` Alexei Starovoitov
2024-10-15 18:19 ` Namhyung Kim
2024-10-15 18:25 ` Alexei Starovoitov
2024-10-15 20:54 ` Namhyung Kim
2024-10-10 23:25 ` [PATCH v5 bpf-next 3/3] selftests/bpf: Add a test for kmem_cache_iter Namhyung Kim
2024-10-15 2:00 ` [PATCH v5 bpf-next 0/3] bpf: Add kmem_cache iterator and kfunc patchwork-bot+netdevbpf
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