linux-kernel - Re: [PATCH] tracing: use ring_buffer_record_is_set_on() in tracer_tracing_is

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Message-ID: <20240206060113.39c0f5bc@rorschach.local.home>
Date: Tue, 6 Feb 2024 06:01:13 -0500
From: Steven Rostedt <rostedt@...dmis.org>
To: Sven Schnelle <svens@...ux.ibm.com>
Cc: Masami Hiramatsu <mhiramat@...nel.org>, Mathieu Desnoyers
 <mathieu.desnoyers@...icios.com>, linux-kernel@...r.kernel.org,
 linux-trace-kernel@...r.kernel.org, Mete Durlu <meted@...ux.ibm.com>
Subject: Re: [PATCH] tracing: use ring_buffer_record_is_set_on() in
 tracer_tracing_is_on()

On Tue, 06 Feb 2024 09:48:16 +0100
Sven Schnelle <svens@...ux.ibm.com> wrote:

> I added some logging, and the test is not triggering this issue. So i
> assume the default of 128 cmdline entries is just to small. Sorry for
> the noise. Lets see whether we're still triggering some failures with
> the other fix applied in CI. If we do, maybe we want to increase the
> saved_cmdline_size for the ftrace test suite.

I wonder if it is a good idea to increase the size when tracing starts,
like the ring buffer expanding code. Maybe to 1024? Or is that still
too small?

-- Steve