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lib/Kernel/utils.pm

is_debugfs_mounted

is_debugfs_mounted();

Checks whether debugfs is mounted at /sys/kernel/debug, same check as blktests' _have_debugfs(). Returns true/false.

enable_debugfs

enable_debugfs();

Mounts debugfs at /sys/kernel/debug (e.g. on SLE 16.1+, where it is disabled by default per PED-8812).