linux-kernel - Re: [PATCH 0/2] tracing: Fix config dependency and trigger parser

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Date:   Tue, 23 Jun 2020 16:03:48 -0500
From:   Tom Zanussi <zanussi@...nel.org>
To:     Masami Hiramatsu <mhiramat@...nel.org>,
        Steven Rostedt <rostedt@...dmis.org>
Cc:     LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 0/2] tracing: Fix config dependency and trigger parser

Hi Masami,

On Sat, 2020-06-20 at 12:45 +0900, Masami Hiramatsu wrote:
> Hi,
> 
> These are some fixes which I found recentry on ftrace.
> 
>  - Since the boot-time tracing synthetic event feature is decoupled
>    from trigger recenty, it should use CONFIG_SYNTH_EVENT.

Oops, yeah, I missed this one in the update, thanks for finding it.

>  - The parser of event trigger seems rejecting some redundant
>    spaces. But it is hard users to find the wrong point. Such
>    spaces should be accepted.
> 

Agreed, your patch makes things much better, thanks.

You can add my reviewed-by for both patches.

Reviewed-by: Tom Zanussi <zanussi@...nel.org>

Thanks,

Tom

> BTW, I also found the trigger parser accepts some inputs which
> may not correctly formatted, e.g.
> 
>  # echo "traceon 1" > events/ftrace/print/trigger
> 
> (from the document, it must be "traceon:1")
> But I think this does not decrease the usability.
> 
> Thank you,
> 
> ---
> 
> Masami Hiramatsu (2):
>       tracing/boot: Fix config dependency for synthedic event
>       tracing: Fix event trigger to accept redundant spaces
> 
> 
>  kernel/trace/trace_boot.c           |    2 +-
>  kernel/trace/trace_events_trigger.c |   21 +++++++++++++++++++--
>  2 files changed, 20 insertions(+), 3 deletions(-)
> 
> --
> Masami Hiramatsu (Linaro) <mhiramat@...nel.org>