From: Yafang Shao <laoar.shao@gmail.com>
To: Christoph Hellwig <hch@infradead.org>
Cc: ast@kernel.org, daniel@iogearbox.net, andrii@kernel.org,
kafai@fb.com, songliubraving@fb.com, yhs@fb.com,
john.fastabend@gmail.com, kpsingh@kernel.org, sdf@google.com,
haoluo@google.com, jolsa@kernel.org, tj@kernel.org,
dennis@kernel.org, cl@linux.com, akpm@linux-foundation.org,
penberg@kernel.org, rientjes@google.com, iamjoonsoo.kim@lge.com,
roman.gushchin@linux.dev, 42.hyeyoo@gmail.com, vbabka@suse.cz,
urezki@gmail.com, linux-mm@kvack.org, bpf@vger.kernel.org
Subject: Re: [PATCH bpf-next 3/7] mm: vmalloc: introduce vsize()
Date: Thu, 2 Feb 2023 22:10:12 +0800 [thread overview]
Message-ID: <CALOAHbBttv8YEFkqQkpeHnJ8kDAmxHPnK1DEv_ZNOvnK9=BGWw@mail.gmail.com> (raw)
In-Reply-To: <Y9uPORBkVlMZFzk3@infradead.org>
On Thu, Feb 2, 2023 at 6:23 PM Christoph Hellwig <hch@infradead.org> wrote:
>
> On Thu, Feb 02, 2023 at 01:41:54AM +0000, Yafang Shao wrote:
> > Introduce a helper to report full size of underlying allocation of a
> > vmalloc'ed address.
>
> What is the use case for it?
The use case is in patch #4 and patch #7, to get the bpf memory usage
from the pointers.
#4: https://lore.kernel.org/bpf/20230202014158.19616-5-laoar.shao@gmail.com/T/#u
#7: https://lore.kernel.org/bpf/20230202014158.19616-8-laoar.shao@gmail.com/T/#u
I forgot to Cc you the full patchset. Sorry about that.
The full patchset is at
https://lore.kernel.org/bpf/20230202014158.19616-1-laoar.shao@gmail.com/
--
Regards
Yafang
next prev parent reply other threads:[~2023-02-02 14:10 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-02-02 1:41 [PATCH bpf-next 0/7] bpf, mm: bpf memory usage Yafang Shao
2023-02-02 1:41 ` [PATCH bpf-next 1/7] mm: percpu: fix incorrect size in pcpu_obj_full_size() Yafang Shao
2023-02-02 1:41 ` [PATCH bpf-next 2/7] mm: percpu: introduce percpu_size() Yafang Shao
2023-02-02 14:32 ` Christoph Lameter
2023-02-02 15:01 ` Yafang Shao
2023-02-02 1:41 ` [PATCH bpf-next 3/7] mm: vmalloc: introduce vsize() Yafang Shao
2023-02-02 10:23 ` Christoph Hellwig
2023-02-02 14:10 ` Yafang Shao [this message]
2023-02-02 1:41 ` [PATCH bpf-next 4/7] mm: util: introduce kvsize() Yafang Shao
2023-02-02 1:41 ` [PATCH bpf-next 5/7] bpf: add new map ops ->map_mem_usage Yafang Shao
2023-02-02 1:41 ` [PATCH bpf-next 6/7] bpf: introduce bpf_mem_alloc_size() Yafang Shao
2023-02-02 4:53 ` kernel test robot
2023-02-02 14:11 ` Yafang Shao
2023-02-02 1:41 ` [PATCH bpf-next 7/7] bpf: hashtab memory usage Yafang Shao
2023-02-04 2:01 ` John Fastabend
2023-02-05 3:55 ` Yafang Shao
2023-02-08 1:56 ` Alexei Starovoitov
2023-02-08 3:33 ` Yafang Shao
2023-02-08 4:29 ` Alexei Starovoitov
2023-02-08 14:22 ` Yafang Shao
2023-02-05 22:14 ` Cong Wang
2023-02-06 11:52 ` Yafang Shao
2023-02-04 2:15 ` [PATCH bpf-next 0/7] bpf, mm: bpf " John Fastabend
2023-02-05 4:03 ` Yafang Shao
2023-02-07 0:48 ` Ho-Ren Chuang
2023-02-07 7:02 ` Yafang Shao
2023-02-07 0:53 ` Ho-Ren Chuang
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