linux-kernel - Re: [PATCH v3 2/5] tracing: fprobe: require explicit [GROUP/]EVENT for list/wildcard

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Message-Id: <20251008095316.cf24f13a84a454ddbf530120@kernel.org>
Date: Wed, 8 Oct 2025 09:53:16 +0900
From: Masami Hiramatsu (Google) <mhiramat@...nel.org>
To: Ryan Chung <seokwoo.chung130@...il.com>
Cc: rostedt@...dmis.org, mathieu.desnoyers@...icios.com, shuah@...nel.org,
 hca@...ux.ibm.com, corbet@....net, linux-trace-kernel@...r.kernel.org,
 linux-kernel@...r.kernel.org, linux-kselftest@...r.kernel.org,
 linux-doc@...r.kernel.org
Subject: Re: [PATCH v3 2/5] tracing: fprobe: require explicit [GROUP/]EVENT
 for list/wildcard

This should be a part of [3/5], because when bisecting, the test will check the
README file and check the feature.

Thank you,

On Sun,  5 Oct 2025 08:46:56 +0900
Ryan Chung <seokwoo.chung130@...il.com> wrote:

> Signed-off-by: Ryan Chung <seokwoo.chung130@...il.com>
> ---
>  kernel/trace/trace.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
> index b3c94fbaf002..ac0d3acc337e 100644
> --- a/kernel/trace/trace.c
> +++ b/kernel/trace/trace.c
> @@ -5524,7 +5524,8 @@ static const char readme_msg[] =
>  	"\t           r[maxactive][:[<group>/][<event>]] <place> [<args>]\n"
>  #endif
>  #ifdef CONFIG_FPROBE_EVENTS
> -	"\t           f[:[<group>/][<event>]] <func-name>[%return] [<args>]\n"
> +	"\t           f[:[<group>/][<event>]] <func-name>[:entry|:exit] [<args>]\n"
> +	"\t                (single symbols still accept %return)\n"
>  	"\t           t[:[<group>/][<event>]] <tracepoint> [<args>]\n"
>  #endif
>  #ifdef CONFIG_HIST_TRIGGERS
> -- 
> 2.43.0
> 


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