/* * lib/bust_spinlocks.c * * Provides a minimal bust_spinlocks for architectures which don't have one of their own. * * bust_spinlocks() clears any spinlocks which would prevent oops, die(), BUG() * and panic() information from reaching the user. */ #include <linux/config.h> #include <linux/kernel.h> #include <linux/spinlock.h> #include <linux/tty.h> #include <linux/wait.h> #include <linux/vt_kern.h> void bust_spinlocks(int yes) { if (yes) { oops_in_progress = 1; } else { int loglevel_save = console_loglevel; #ifdef CONFIG_VT unblank_screen(); #endif oops_in_progress = 0; /* * OK, the message is on the console. Now we call printk() * without oops_in_progress set so that printk() will give klogd * and the blanked console a poke. Hold onto your hats... */ console_loglevel = 15; /* NMI oopser may have shut the console up */ printk(" "); console_loglevel = loglevel_save; } }