126187d18SMauro Carvalho ChehabClearing WARN_ONCE 226187d18SMauro Carvalho Chehab------------------ 3b1fca27dSAndi Kleen 4*3ec25826SPaul GortmakerWARN_ONCE / WARN_ON_ONCE / printk_once only emit a message once. 5b1fca27dSAndi Kleen 6b1fca27dSAndi Kleenecho 1 > /sys/kernel/debug/clear_warn_once 7b1fca27dSAndi Kleen 8b1fca27dSAndi Kleenclears the state and allows the warnings to print once again. 9b1fca27dSAndi KleenThis can be useful after test suite runs to reproduce problems. 10