Re: [RFC PATCH bpf-next v4 0/3] Handle immediate reuse in bpf memory allocator

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Subject: Re: [RFC PATCH bpf-next v4 0/3] Handle immediate reuse in bpf memory allocator
From: Alexei Starovoitov <alexei.starovoitov@xxxxxxxxx>
Date: Wed, 7 Jun 2023 21:30:41 -0700
Cc: "Paul E. McKenney" <paulmck@xxxxxxxxxx>, bpf <bpf@xxxxxxxxxxxxxxx>, Martin KaFai Lau <martin.lau@xxxxxxxxx>, Andrii Nakryiko <andrii@xxxxxxxxxx>, Song Liu <song@xxxxxxxxxx>, Hao Luo <haoluo@xxxxxxxxxx>, Yonghong Song <yhs@xxxxxx>, Daniel Borkmann <daniel@xxxxxxxxxxxxx>, KP Singh <kpsingh@xxxxxxxxxx>, Stanislav Fomichev <sdf@xxxxxxxxxx>, Jiri Olsa <jolsa@xxxxxxxxxx>, John Fastabend <john.fastabend@xxxxxxxxx>, rcu@xxxxxxxxxxxxxxx, "houtao1@xxxxxxxxxx" <houtao1@xxxxxxxxxx>
In-reply-to: <a12008e9-f3f7-5050-e461-344d9d86e48f@huaweicloud.com>

On Wed, Jun 7, 2023 at 8:36 PM Hou Tao <houtao@xxxxxxxxxxxxxxx> wrote:
>
> below. And Alexei, could you please also try the hack below for your
> multiple-rcu-cbs version ?

Before any further experiments... please fix the bench in patch 2.
Make sure it exits out of RCU CS after no more than 64 map_update_elem.
Just send that patch alone.

References:
- [RFC PATCH bpf-next v4 0/3] Handle immediate reuse in bpf memory allocator
  - From: Hou Tao
- Re: [RFC PATCH bpf-next v4 0/3] Handle immediate reuse in bpf memory allocator
  - From: Hou Tao
- Re: [RFC PATCH bpf-next v4 0/3] Handle immediate reuse in bpf memory allocator
  - From: Alexei Starovoitov
- Re: [RFC PATCH bpf-next v4 0/3] Handle immediate reuse in bpf memory allocator
  - From: Hou Tao
- Re: [RFC PATCH bpf-next v4 0/3] Handle immediate reuse in bpf memory allocator
  - From: Alexei Starovoitov
- Re: [RFC PATCH bpf-next v4 0/3] Handle immediate reuse in bpf memory allocator
  - From: Alexei Starovoitov
- Re: [RFC PATCH bpf-next v4 0/3] Handle immediate reuse in bpf memory allocator
  - From: Alexei Starovoitov
- Re: [RFC PATCH bpf-next v4 0/3] Handle immediate reuse in bpf memory allocator
  - From: Paul E. McKenney
- Re: [RFC PATCH bpf-next v4 0/3] Handle immediate reuse in bpf memory allocator
  - From: Alexei Starovoitov
- Re: [RFC PATCH bpf-next v4 0/3] Handle immediate reuse in bpf memory allocator
  - From: Paul E. McKenney
- Re: [RFC PATCH bpf-next v4 0/3] Handle immediate reuse in bpf memory allocator
  - From: Alexei Starovoitov
- Re: [RFC PATCH bpf-next v4 0/3] Handle immediate reuse in bpf memory allocator
  - From: Hou Tao

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