But to his question about spurious directories in root. I still have on many systems an empty /opt. How's that different? I think seeing a /debug directory is quite obvious to what it is. Are you that worried about an inode that is seldom used?
The only ones that ever complain about /debug are a few kernel developers that know that /sys/kernel/debug was made for that purpose. The majority of people that use ftrace seem to mount the debugfs on /debug.
Typing "cat /debug/tracing/trace" is much faster than typing
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