Content - 211fd926cf00f5994f322d4edb1f0d45a4fd442a - cb19a79/Documentation/clearing-warn-once.txt

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Tip revision: a188339ca5a396acc588e5851ed7e19f66b0ebd9 authored by Linus Torvalds on 19 May 2019, 22:47:09 UTC
Linux 5.2-rc1

Tip revision: a188339

clearing-warn-once.txt

Clearing WARN_ONCE
------------------

WARN_ONCE / WARN_ON_ONCE / printk_once only emit a message 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.

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