linux-kernel - Re: [PATCH] tracing: Have memmapped ring buffer use ioctl of "R" range 0x20-2F

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Message-ID: <20240702154146.754e2ad5@rorschach.local.home>
Date: Tue, 2 Jul 2024 15:41:46 -0400
From: Steven Rostedt <rostedt@...dmis.org>
To: Mathieu Desnoyers <mathieu.desnoyers@...icios.com>
Cc: LKML <linux-kernel@...r.kernel.org>, Linux trace kernel
 <linux-trace-kernel@...r.kernel.org>, Masami Hiramatsu
 <mhiramat@...nel.org>, "Dmitry V. Levin" <ldv@...ace.io>, Jonathan Corbet
 <corbet@....net>, linux-doc@...r.kernel.org
Subject: Re: [PATCH] tracing: Have memmapped ring buffer use ioctl of "R"
 range 0x20-2F

On Tue, 2 Jul 2024 15:38:10 -0400
Mathieu Desnoyers <mathieu.desnoyers@...icios.com> wrote:

> On 2024-07-02 15:33, Steven Rostedt wrote:
> > From: "Steven Rostedt (Google)" <rostedt@...dmis.org>
> > 
> > To prevent conflicts with other ioctl numbers to allow strace to have an
> > idea of what is happening, add the rang of ioctls for the trace buffer

Hmm, someone "rang an ioctl" ;-)

I'll update the change log before pulling this in.

> > mapping from _IO("T", 0x1) to the range of "R" 0x20 - 0x2F.
> > 
> > Link: https://lore.kernel.org/linux-trace-kernel/20240630105322.GA17573@altlinux.org/
> > 
> > Reported-by: "Dmitry V. Levin" <ldv@...ace.io>
> > Signed-off-by: Steven Rostedt (Google) <rostedt@...dmis.org>  
> 
> Reviewed-by: Mathieu Desnoyers <mathieu.desnoyers@...icios.com>

Thanks,

-- Steve