linux-kernel - Re: [PATCH] tracing: Export tracing_start() and tracing

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Message-ID: <YL3X7yRr1+yW/PHU@infradead.org>
Date:   Mon, 7 Jun 2021 09:25:19 +0100
From:   Christoph Hellwig <hch@...radead.org>
To:     Vincent Whitchurch <vincent.whitchurch@...s.com>
Cc:     Steven Rostedt <rostedt@...dmis.org>,
        Ingo Molnar <mingo@...hat.com>, kernel@...s.com,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] tracing: Export tracing_start() and tracing_stop()

On Wed, Jun 02, 2021 at 10:01:18AM +0200, Vincent Whitchurch wrote:
> tracing_stop() is very useful during hands-on debugging for getting the
> trace to stop exactly when the problem is detected.  Export this to
> modules.
> 
> Personally, I haven't yet found the need to use tracing_start() from
> code since I usually start tracing via tracefs, but export that too for
> symmetry since it may have its uses together with tracing_stop().

NAK, no exports for unused symbols.