From: patchwork-bot+netdevbpf@kernel.org
To: Andrey Grodzovsky <andrey.grodzovsky@crowdstrike.com>
Cc: bpf@vger.kernel.org, linux-trace-kernel@vger.kernel.org,
ast@kernel.org, daniel@iogearbox.net, andrii@kernel.org,
jolsa@kernel.org, rostedt@goodmis.org,
linux-open-source@crowdstrike.com
Subject: Re: [PATCH bpf-next v4 0/3] Optimize kprobe.session attachment for exact function names
Date: Thu, 05 Mar 2026 23:30:08 +0000 [thread overview]
Message-ID: <177275340855.3325345.9824882028753278157.git-patchwork-notify@kernel.org> (raw)
In-Reply-To: <20260302200837.317907-1-andrey.grodzovsky@crowdstrike.com>
Hello:
This series was applied to bpf/bpf-next.git (master)
by Andrii Nakryiko <andrii@kernel.org>:
On Mon, 2 Mar 2026 15:08:34 -0500 you wrote:
> When libbpf attaches kprobe.session programs with exact function names
> (the common case: SEC("kprobe.session/vfs_read")), the current code path
> has two independent performance bottlenecks:
>
> 1. Userspace (libbpf): attach_kprobe_session() always parses
> /proc/kallsyms to resolve function names, even when the name is exact
> (no wildcards). This takes ~150ms per function.
>
> [...]
Here is the summary with links:
- [bpf-next,v4,1/3] libbpf: Optimize kprobe.session attachment for exact function names
https://git.kernel.org/bpf/bpf-next/c/6afc431db1b4
- [bpf-next,v4,2/3] ftrace: Use kallsyms binary search for single-symbol lookup
(no matching commit)
- [bpf-next,v4,3/3] selftests/bpf: add tests for kprobe.session optimization
https://git.kernel.org/bpf/bpf-next/c/a28441dd2961
You are awesome, thank you!
--
Deet-doot-dot, I am a bot.
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prev parent reply other threads:[~2026-03-05 23:30 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-03-02 20:08 [PATCH bpf-next v4 0/3] Optimize kprobe.session attachment for exact function names Andrey Grodzovsky
2026-03-02 20:08 ` [PATCH bpf-next v4 1/3] libbpf: " Andrey Grodzovsky
2026-03-02 20:08 ` [PATCH bpf-next v4 2/3] ftrace: Use kallsyms binary search for single-symbol lookup Andrey Grodzovsky
2026-03-02 20:08 ` [PATCH bpf-next v4 3/3] selftests/bpf: add tests for kprobe.session optimization Andrey Grodzovsky
2026-03-05 23:30 ` patchwork-bot+netdevbpf [this message]
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