linux-kernel - Re: [PATCH bpf-next v3 0/3] selftests/bpf: benchmark all symbols for kprobe-multi

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Message-ID: <2797578.mvXUDI8C0e@7940hx>
Date: Thu, 04 Sep 2025 09:12:18 +0800
From: Menglong Dong <menglong.dong@...ux.dev>
To: Menglong Dong <menglong8.dong@...il.com>,
 Andrii Nakryiko <andrii.nakryiko@...il.com>
Cc: andrii@...nel.org, olsajiri@...il.com, 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, jolsa@...nel.org, 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 v3 0/3] selftests/bpf: benchmark all symbols for
 kprobe-multi

On 2025/9/4 07:50 Andrii Nakryiko <andrii.nakryiko@...il.com> write:
> On Sun, Aug 31, 2025 at 8:43 PM Menglong Dong <menglong8.dong@...il.com> wrote:
> >
> > Add the benchmark testcase "kprobe-multi-all", which will hook all the
> > kernel functions during the testing.
> >
> > This series is separated out from [1].
> >
> > Changes since V2:
> > * add some comment to attach_ksyms_all, which notes that don't run the
> >   testing on a debug kernel
> >
> > Changes since V1:
> > * introduce trace_blacklist instead of copy-pasting strcmp in the 2nd
> >   patch
> > * use fprintf() instead of printf() in 3rd patch
> >
> > Link: https://lore.kernel.org/bpf/20250817024607.296117-1-dongml2@chinatelecom.cn/ [1]
> > Menglong Dong (3):
> >   selftests/bpf: move get_ksyms and get_addrs to trace_helpers.c
> >   selftests/bpf: skip recursive functions for kprobe_multi
> >   selftests/bpf: add benchmark testing for kprobe-multi-all
> >
> 
> this doesn't apply cleanly over bpf-next, can you please rebase and
> resend to let CI run?

Yeah, I just notice that. I'll rebase and resend it now.

Thanks!
Menglong Dong

> 
> >  tools/testing/selftests/bpf/bench.c           |   4 +
> >  .../selftests/bpf/benchs/bench_trigger.c      |  61 +++++
> >  .../selftests/bpf/benchs/run_bench_trigger.sh |   4 +-
> >  .../bpf/prog_tests/kprobe_multi_test.c        | 220 +---------------
> >  .../selftests/bpf/progs/trigger_bench.c       |  12 +
> >  tools/testing/selftests/bpf/trace_helpers.c   | 234 ++++++++++++++++++
> >  tools/testing/selftests/bpf/trace_helpers.h   |   3 +
> >  7 files changed, 319 insertions(+), 219 deletions(-)
> >
> > --
> > 2.51.0
> >
> 
>