From: Alexei Starovoitov <alexei.starovoitov@gmail.com>
To: Menglong Dong <menglong8.dong@gmail.com>
Cc: Steven Rostedt <rostedt@goodmis.org>,
Jiri Olsa <jolsa@kernel.org>, bpf <bpf@vger.kernel.org>,
Menglong Dong <dongml2@chinatelecom.cn>
Subject: Re: [PATCH bpf-next v2 00/18] bpf: tracing multi-link support
Date: Mon, 14 Jul 2025 19:31:49 -0700 [thread overview]
Message-ID: <CAADnVQKWjvmM2sGbnVEbbwe7nRiN6omjnjP593vdJjGsqYzL1g@mail.gmail.com> (raw)
In-Reply-To: <20250703121521.1874196-1-dongml2@chinatelecom.cn>
On Thu, Jul 3, 2025 at 5:17 AM Menglong Dong <menglong8.dong@gmail.com> wrote:
>
> Besides the performance, we also need to make the global trampoline
> collaborate with bpf trampoline. For now, FENTRY_MULTI will be attached
> to the target who already have FENTRY on it, and -EEXIST will be returned.
> So we need another series to make them work together.
This needs to be thought through from the beginning.
Without it the feature is way too limiting.
People have fentry attached 24/7. It's not merely tracing use case.
fentry-multi has to be able to co-exist.
next prev parent reply other threads:[~2025-07-15 2:32 UTC|newest]
Thread overview: 86+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-07-03 12:15 [PATCH bpf-next v2 00/18] bpf: tracing multi-link support Menglong Dong
2025-07-03 12:15 ` [PATCH bpf-next v2 01/18] bpf: add function hash table for tracing-multi Menglong Dong
2025-07-04 16:07 ` kernel test robot
2025-07-15 1:55 ` Alexei Starovoitov
2025-07-15 2:37 ` Menglong Dong
2025-07-15 2:49 ` Alexei Starovoitov
2025-07-15 3:13 ` Menglong Dong
2025-07-15 9:06 ` Menglong Dong
2025-07-15 16:22 ` Alexei Starovoitov
2025-07-03 12:15 ` [PATCH bpf-next v2 02/18] x86,bpf: add bpf_global_caller for global trampoline Menglong Dong
2025-07-15 2:25 ` Alexei Starovoitov
2025-07-15 8:36 ` Menglong Dong
2025-07-15 9:30 ` Menglong Dong
2025-07-16 16:56 ` Inlining migrate_disable/enable. Was: " Alexei Starovoitov
2025-07-16 18:24 ` Peter Zijlstra
2025-07-16 22:35 ` Alexei Starovoitov
2025-07-16 22:49 ` Steven Rostedt
2025-07-16 22:50 ` Steven Rostedt
2025-07-28 9:20 ` Menglong Dong
2025-07-31 16:15 ` Alexei Starovoitov
2025-08-01 1:42 ` Menglong Dong
2025-08-06 8:44 ` Menglong Dong
2025-08-08 0:58 ` Alexei Starovoitov
2025-08-08 5:48 ` Menglong Dong
2025-08-08 6:32 ` Menglong Dong
2025-08-08 15:47 ` Alexei Starovoitov
2025-07-15 16:35 ` Alexei Starovoitov
2025-07-16 13:05 ` Menglong Dong
2025-07-17 0:59 ` multi-fentry proposal. Was: " Alexei Starovoitov
2025-07-17 1:50 ` Menglong Dong
2025-07-17 2:13 ` Alexei Starovoitov
2025-07-17 2:37 ` Menglong Dong
2025-07-16 14:40 ` Menglong Dong
2025-07-03 12:15 ` [PATCH bpf-next v2 03/18] ftrace: factor out ftrace_direct_update from register_ftrace_direct Menglong Dong
2025-07-05 2:41 ` kernel test robot
2025-07-03 12:15 ` [PATCH bpf-next v2 04/18] ftrace: add reset_ftrace_direct_ips Menglong Dong
2025-07-03 15:30 ` Steven Rostedt
2025-07-04 1:54 ` Menglong Dong
2025-07-07 18:52 ` Steven Rostedt
2025-07-08 1:26 ` Menglong Dong
2025-07-03 12:15 ` [PATCH bpf-next v2 05/18] bpf: introduce bpf_gtramp_link Menglong Dong
2025-07-04 7:00 ` kernel test robot
2025-07-04 7:52 ` kernel test robot
2025-07-03 12:15 ` [PATCH bpf-next v2 06/18] bpf: tracing: add support to record and check the accessed args Menglong Dong
2025-07-14 22:07 ` Andrii Nakryiko
2025-07-14 23:45 ` Menglong Dong
2025-07-15 17:11 ` Andrii Nakryiko
2025-07-16 12:50 ` Menglong Dong
2025-07-03 12:15 ` [PATCH bpf-next v2 07/18] bpf: refactor the modules_array to ptr_array Menglong Dong
2025-07-03 12:15 ` [PATCH bpf-next v2 08/18] bpf: verifier: add btf to the function args of bpf_check_attach_target Menglong Dong
2025-07-03 12:15 ` [PATCH bpf-next v2 09/18] bpf: verifier: move btf_id_deny to bpf_check_attach_target Menglong Dong
2025-07-03 12:15 ` [PATCH bpf-next v2 10/18] x86,bpf: factor out arch_bpf_get_regs_nr Menglong Dong
2025-07-03 12:15 ` [PATCH bpf-next v2 11/18] bpf: tracing: add multi-link support Menglong Dong
2025-07-03 12:15 ` [PATCH bpf-next v2 12/18] libbpf: don't free btf if tracing_multi progs existing Menglong Dong
2025-07-14 22:07 ` Andrii Nakryiko
2025-07-15 1:15 ` Menglong Dong
2025-07-03 12:15 ` [PATCH bpf-next v2 13/18] libbpf: support tracing_multi Menglong Dong
2025-07-14 22:07 ` Andrii Nakryiko
2025-07-15 1:58 ` Menglong Dong
2025-07-15 17:20 ` Andrii Nakryiko
2025-07-16 12:43 ` Menglong Dong
2025-07-03 12:15 ` [PATCH bpf-next v2 14/18] libbpf: add btf type hash lookup support Menglong Dong
2025-07-14 22:07 ` Andrii Nakryiko
2025-07-15 4:40 ` Menglong Dong
2025-07-15 17:20 ` Andrii Nakryiko
2025-07-16 11:53 ` Menglong Dong
2025-07-03 12:15 ` [PATCH bpf-next v2 15/18] libbpf: add skip_invalid and attach_tracing for tracing_multi Menglong Dong
2025-07-14 22:07 ` Andrii Nakryiko
2025-07-15 5:48 ` Menglong Dong
2025-07-15 17:23 ` Andrii Nakryiko
2025-07-16 11:46 ` Menglong Dong
2025-07-03 12:15 ` [PATCH bpf-next v2 16/18] selftests/bpf: move get_ksyms and get_addrs to trace_helpers.c Menglong Dong
2025-07-03 12:15 ` [PATCH bpf-next v2 17/18] selftests/bpf: add basic testcases for tracing_multi Menglong Dong
2025-07-08 20:07 ` Alexei Starovoitov
2025-07-09 1:33 ` Menglong Dong
2025-07-14 23:49 ` Ihor Solodrai
2025-07-16 0:26 ` Ihor Solodrai
2025-07-16 0:31 ` Alexei Starovoitov
2025-07-16 0:34 ` Ihor Solodrai
2025-07-03 12:15 ` [PATCH bpf-next v2 18/18] selftests/bpf: add bench tests " Menglong Dong
2025-07-04 8:47 ` [PATCH bpf-next v2 00/18] bpf: tracing multi-link support Jiri Olsa
2025-07-04 8:52 ` Menglong Dong
2025-07-04 8:58 ` Menglong Dong
2025-07-04 9:12 ` Jiri Olsa
2025-07-15 2:31 ` Alexei Starovoitov [this message]
2025-07-15 2:44 ` Menglong Dong
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