[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <9a7e0b6087540c9f868d60cbfc88ccefa8070a1b.camel@kernel.org>
Date: Mon, 13 Jun 2022 16:01:49 -0500
From: Tom Zanussi <zanussi@...nel.org>
To: Linyu Yuan <quic_linyyuan@...cinc.com>,
Steven Rostedt <rostedt@...dmis.org>,
Masami Hiramatsu <mhiramat@...nel.org>,
Ingo Molnar <mingo@...hat.com>
Cc: linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4 1/3] tracing: eprobe: remove duplicate is_good_name()
operation
Hi Linhu,
On Thu, 2022-06-02 at 20:10 +0800, Linyu Yuan wrote:
> traceprobe_parse_event_name() already validate group and event name,
> there is no need to call is_good_name() after it.
>
> Signed-off-by: Linyu Yuan <quic_linyyuan@...cinc.com>
> ---
> v2: drop v1 change as it is NACK.
> add it to remove duplicate is_good_name().
> v3: move it as first patch.
> v4: no change
>
> kernel/trace/trace_eprobe.c | 4 ----
> 1 file changed, 4 deletions(-)
>
> diff --git a/kernel/trace/trace_eprobe.c
> b/kernel/trace/trace_eprobe.c
> index 7d44785..17d64e3 100644
> --- a/kernel/trace/trace_eprobe.c
> +++ b/kernel/trace/trace_eprobe.c
> @@ -878,16 +878,12 @@ static int __trace_eprobe_create(int argc,
> const char *argv[])
> sanitize_event_name(buf1);
> event = buf1;
> }
> - if (!is_good_name(event) || !is_good_name(group))
> - goto parse_error;
traceprobe_parse_event_name() is only called if (event). In the
!event case, wouldn't the is_good_name() checks still be needed (since
in that case buf1 is assigned to event)?
>
> sys_event = argv[1];
> ret = traceprobe_parse_event_name(&sys_event, &sys_name,
> buf2,
> sys_event - argv[1]);
> if (ret || !sys_name)
> goto parse_error;
> - if (!is_good_name(sys_event) || !is_good_name(sys_name))
> - goto parse_error;
I agree this one isn't needed.
Thanks,
Tom
>
> mutex_lock(&event_mutex);
> event_call = find_and_get_event(sys_name, sys_event);
Powered by blists - more mailing lists