From: Jiri Olsa <olsajiri@gmail.com>
To: Steven Rostedt <rostedt@kernel.org>
Cc: Jiri Olsa <olsajiri@gmail.com>,
Florent Revest <revest@google.com>,
Mark Rutland <mark.rutland@arm.com>,
bpf@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-trace-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
Alexei Starovoitov <ast@kernel.org>,
Daniel Borkmann <daniel@iogearbox.net>,
Andrii Nakryiko <andrii@kernel.org>,
Menglong Dong <menglong8.dong@gmail.com>
Subject: Re: [PATCH 2/9] ftrace: Add register_ftrace_direct_hash function
Date: Wed, 24 Sep 2025 18:00:26 +0200 [thread overview]
Message-ID: <aNQVmrGCW08zF9Kp@krava> (raw)
In-Reply-To: <20250924110703.2a0ced1b@batman.local.home>
On Wed, Sep 24, 2025 at 11:07:03AM -0400, Steven Rostedt wrote:
> On Wed, 24 Sep 2025 16:37:03 +0200
> Jiri Olsa <olsajiri@gmail.com> wrote:
>
> > I have bpf changes using this that I did not post yet, but even with that
> > there's probably no reason to export this.. will remove
>
> I'm interested in seeing these patches, as the ftrace hashes were
> supposed to be opaque from other parts of the kernel.
branch:
https://git.kernel.org/pub/scm/linux/kernel/git/jolsa/perf.git/log/?h=bpf/tracing_multi
used in this commit:
https://git.kernel.org/pub/scm/linux/kernel/git/jolsa/perf.git/commit/?h=bpf/tracing_multi&id=8814108949537edaae84fbeee1cbc28280590b7f
background.. it's poc code for bpf tracing-multi attachment. Most likely we will
go with Menglong change instead [1], but it could use this direct interface in a
same way for speeding up the attachment
jirka
[1] https://lore.kernel.org/bpf/20250528034712.138701-1-dongml2@chinatelecom.cn/
next prev parent reply other threads:[~2025-09-24 16:00 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-09-23 21:51 [PATCH 0/9] ftrace,bpf: Use single direct ops for bpf trampolines Jiri Olsa
2025-09-23 21:51 ` [PATCH 1/9] ftrace: Make alloc_and_copy_ftrace_hash direct friendly Jiri Olsa
2025-09-23 21:51 ` [PATCH 2/9] ftrace: Add register_ftrace_direct_hash function Jiri Olsa
2025-09-24 9:04 ` Steven Rostedt
2025-09-24 14:37 ` Jiri Olsa
2025-09-24 15:07 ` Steven Rostedt
2025-09-24 16:00 ` Jiri Olsa [this message]
2025-09-23 21:51 ` [PATCH 3/9] ftrace: Add unregister_ftrace_direct_hash function Jiri Olsa
2025-09-23 21:51 ` [PATCH 4/9] ftrace: Add modify_ftrace_direct_hash function Jiri Olsa
2025-09-23 21:51 ` [PATCH 5/9] ftrace: Export some of hash related functions Jiri Olsa
2025-09-23 21:51 ` [PATCH 6/9] ftrace: Use direct hash interface in direct functions Jiri Olsa
2025-09-23 21:51 ` [PATCH 7/9] bpf: Add trampoline ip hash table Jiri Olsa
2025-09-23 21:51 ` [PATCH 8/9] ftrace: Factor ftrace_ops ops_func interface Jiri Olsa
2025-09-23 21:51 ` [PATCH 9/9] bpf, x86: Use single ftrace_ops for direct calls Jiri Olsa
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