clearing-warn-once.txt « Documentation - github.com/torvalds/linux.git - Unnamed repository; edit this file 'description' to name the repository.

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clearing-warn-once.txt « Documentation - github.com/torvalds/linux.git - Unnamed repository; edit this file 'description' to name the repository.

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WARN_ONCE / WARN_ON_ONCE only print a warning once.

echo 1 > /sys/kernel/debug/clear_warn_once

clears the state and allows the warnings to print once again.
This can be useful after test suite runs to reproduce problems.