linux-kernel - Re: [RFC PATCH 0/3] tracing/boot: Add histogram syntax support in boot-time tracing

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Message-ID: <20210802123417.54b263ec@oasis.local.home>
Date:   Mon, 2 Aug 2021 12:34:17 -0400
From:   Steven Rostedt <rostedt@...dmis.org>
To:     Masami Hiramatsu <mhiramat@...nel.org>
Cc:     linux-kernel@...r.kernel.org, Tom Zanussi <zanussi@...nel.org>
Subject: Re: [RFC PATCH 0/3] tracing/boot: Add histogram syntax support in
 boot-time tracing

On Tue,  3 Aug 2021 00:30:10 +0900
Masami Hiramatsu <mhiramat@...nel.org> wrote:

> Hi,
> 
> Here is a series of patches for boot-time tracing to add histogram
> syntax extension and fixes a build issue.

Cool, I'll try to look at this, this week.

Thanks Masami!

-- Steve


> 
> Currently, the boot-time tracing only supports per-event actions
> for setting trigger actions. This is enough for short actions
> like 'traceon', 'traceoff', 'snapshot' etc. However, it is not good
> for the 'hist' trigger action because it is usually too long to write
> it in a single string especially if it has an 'onmatch' action.
>