Re: [PATCH 1/3] bpf: Disable preemption when increasing per-cpu map_locked

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Subject: Re: [PATCH 1/3] bpf: Disable preemption when increasing per-cpu map_locked
From: Sebastian Andrzej Siewior <bigeasy@xxxxxxxxxxxxx>
Date: Mon, 22 Aug 2022 17:30:18 +0200
Cc: bpf@xxxxxxxxxxxxxxx, Song Liu <songliubraving@xxxxxx>, Hao Sun <sunhao.th@xxxxxxxxx>, Andrii Nakryiko <andrii@xxxxxxxxxx>, Yonghong Song <yhs@xxxxxx>, Alexei Starovoitov <ast@xxxxxxxxxx>, Daniel Borkmann <daniel@xxxxxxxxxxxxx>, Martin KaFai Lau <kafai@xxxxxx>, KP Singh <kpsingh@xxxxxxxxxx>, "David S . Miller" <davem@xxxxxxxxxxxxx>, Jakub Kicinski <kuba@xxxxxxxxxx>, Stanislav Fomichev <sdf@xxxxxxxxxx>, Hao Luo <haoluo@xxxxxxxxxx>, Jiri Olsa <jolsa@xxxxxxxxxx>, John Fastabend <john.fastabend@xxxxxxxxx>, Lorenz Bauer <oss@xxxxxx>, houtao1@xxxxxxxxxx
In-reply-to: <28f33042-2c86-87e9-bfdb-5bc312f06f71@huaweicloud.com>

On 2022-08-22 20:09:47 [+0800], Hou Tao wrote:
> Hi,
Hi,

> > But isn't the RT case still affected by the very same problem?
> As said in patch 0, the CONFIG_PREEMPT_RT && non-preallocated case is fixed in
> patch 2.

ups, sorry.

Sebastian

References:
- [PATCH 0/3] fixes for concurrent htab updates
  - From: Hou Tao
- [PATCH 1/3] bpf: Disable preemption when increasing per-cpu map_locked
  - From: Hou Tao
- Re: [PATCH 1/3] bpf: Disable preemption when increasing per-cpu map_locked
  - From: Sebastian Andrzej Siewior
- Re: [PATCH 1/3] bpf: Disable preemption when increasing per-cpu map_locked
  - From: Hou Tao

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