linux-kernel - Re: [PATCH bpf-next v2 3/3] selftests/bpf: add benchmark testing for kprobe-multi-all

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Message-ID: <6338236.lOV4Wx5bFT@7940hx>
Date: Wed, 27 Aug 2025 14:54:29 +0800
From: Menglong Dong <menglong.dong@...ux.dev>
To: Menglong Dong <menglong8.dong@...il.com>, Jiri Olsa <olsajiri@...il.com>
Cc: andrii@...nel.org, eddyz87@...il.com, mykolal@...com, ast@...nel.org,
 daniel@...earbox.net, martin.lau@...ux.dev, song@...nel.org,
 yonghong.song@...ux.dev, john.fastabend@...il.com, kpsingh@...nel.org,
 sdf@...ichev.me, haoluo@...gle.com, shuah@...nel.org, yikai.lin@...o.com,
 memxor@...il.com, bpf@...r.kernel.org, linux-kselftest@...r.kernel.org,
 linux-kernel@...r.kernel.org
Subject:
 Re: [PATCH bpf-next v2 3/3] selftests/bpf: add benchmark testing for
 kprobe-multi-all

On 2025年8月27日星期三 02:48 Jiri Olsa <olsajiri@...il.com> write:
> On Tue, Aug 26, 2025 at 04:04:30PM +0800, Menglong Dong wrote:
> > For now, the benchmark for kprobe-multi is single, which means there is
> > only 1 function is hooked during testing. Add the testing
> > "kprobe-multi-all", which will hook all the kernel functions during
> > the benchmark. And the "kretprobe-multi-all" is added too.
> 
> hi,
> fyi this bench causes panic on my setup.. very silent, so not sure
> yet which function we should blacklist next, attaching my .config
> 

Yeah, I can reproduce it easily with your config. Let me have a
debug on this problem.

Thanks!
Menglong Dong

> jirka
>