blob: 8d058bbc0859d020ded12072b1c919384c36af1a (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
|
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.
Values greater than one set a timer for a periodic state reset; e.g.
echo 60 > /sys/kernel/debug/clear_warn_once
will establish an hourly state reset, effectively turning WARN_ONCE
into a long period rate-limited warning.
Writing a value of zero (or one) will remove any previously set timer.
|
