linux-kernel - Re: [PATCH v2 0/3] uprobes: two common case speed ups

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Message-Id: <20240319132057.78e60d15e4fd07dbef3b14a9@kernel.org>
Date: Tue, 19 Mar 2024 13:20:57 +0900
From: Masami Hiramatsu (Google) <mhiramat@...nel.org>
To: Andrii Nakryiko <andrii@...nel.org>
Cc: linux-trace-kernel@...r.kernel.org, rostedt@...dmis.org,
 bpf@...r.kernel.org, mathieu.desnoyers@...icios.com,
 linux-kernel@...r.kernel.org, oleg@...hat.com, jolsa@...nel.org
Subject: Re: [PATCH v2 0/3] uprobes: two common case speed ups

Hi,

On Mon, 18 Mar 2024 11:17:25 -0700
Andrii Nakryiko <andrii@...nel.org> wrote:

> This patch set implements two speed ups for uprobe/uretprobe runtime execution
> path for some common scenarios: BPF-only uprobes (patches #1 and #2) and
> system-wide (non-PID-specific) uprobes (patch #3). Please see individual
> patches for details.

This series looks good to me. Let me pick it on probes/for-next.

Thanks!

> 
> v1->v2:
>   - rebased onto trace/core branch of tracing tree, hopefully I guessed right;
>   - simplified user_cpu_buffer usage further (Oleg Nesterov);
>   - simplified patch #3, just moved speculative check outside of lock (Oleg);
>   - added Reviewed-by from Jiri Olsa.
> 
> Andrii Nakryiko (3):
>   uprobes: encapsulate preparation of uprobe args buffer
>   uprobes: prepare uprobe args buffer lazily
>   uprobes: add speculative lockless system-wide uprobe filter check
> 
>  kernel/trace/trace_uprobe.c | 103 +++++++++++++++++++++---------------
>  1 file changed, 59 insertions(+), 44 deletions(-)
> 
> -- 
> 2.43.0
> 


-- 
Masami Hiramatsu (Google) <mhiramat@...nel.org>