Re: [PATCH v2 5/7] qla2xxx: Enhance driver tracing with separate tunable and more

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On Tue, 30 Aug 2022 09:55:54 +0200
Daniel Wagner <dwagner@xxxxxxx> wrote:

> On Mon, Aug 29, 2022 at 07:25:34PM +0000, Himanshu Madhani wrote:
> > root@tatoonie~6.0.0-rc1+:/# ls -l /sys/kernel/tracing/
> > total 0
> > root@tatoonie~6.0.0-rc1+:/# ls -l /sys/kernel/debug/tracing/instances/qla2xxx/trace
> > -rw-r----- 1 root root 0 Aug 29 08:54 /sys/kernel/debug/tracing/instances/qla2xxx/trace  
> 
> IIRC, Steven's goal was to get all distros to move the mount point
> from /sys/kernel/debug/tracing to /sys/kernel/tracing. Not sure where we
> stand here.

I believe Fedora and Debian both have added it there.

Note, when mounting the debugfs file system to /sys/kernel/debug, tracefs
is automatically mounted at /sys/kernel/debug/tracing for backward
compatibility.

But the correct place to mount tracefs, is at /sys/kernel/tracing. Perhaps
I will remove the autmatic mounting of tracefs on debugfs when that becomes
the norm.

-- Steve



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