Re: [RFC][PATCH] tracing: Deprecate auto-mounting tracefs in debugfs

On Tue, Jun 17, 2025 at 01:36:14PM -0400, Steven Rostedt wrote:
> From: Steven Rostedt <[email protected]>
> 
> In January 2015, tracefs was created to allow access to the tracing
> infrastructure without needing to compile in debugfs. When tracefs is
> configured, the directory /sys/kernel/tracing will exist and tooling is
> expected to use that path to access the tracing infrastructure.
> 
> To allow backward compatibility, when debugfs is mounted, it would
> automount tracefs in its "tracing" directory so that tooling that had hard
> coded /sys/kernel/debug/tracing would still work.
> 
> It has been over 10 years since the new interface was introduced, and all
> tooling should now be using it. Start the process of deprecating the old
> path so that it doesn't need to be maintained anymore.

I've always used /debug/tracing/ (because /debug is the right place to
mount debugfs). You're saying this is going away and will break all my
scripts?!