1 /* 2 * lib/bust_spinlocks.c 3 * 4 * Provides a minimal bust_spinlocks for architectures which don't have one of their own. 5 * 6 * bust_spinlocks() clears any spinlocks which would prevent oops, die(), BUG() 7 * and panic() information from reaching the user. 8 */ 9 10 #include <linux/kernel.h> 11 #include <linux/spinlock.h> 12 #include <linux/tty.h> 13 #include <linux/wait.h> 14 #include <linux/vt_kern.h> 15 #include <linux/console.h> 16 17 18 void __attribute__((weak)) bust_spinlocks(int yes) 19 { 20 if (yes) { 21 ++oops_in_progress; 22 } else { 23 #ifdef CONFIG_VT 24 unblank_screen(); 25 #endif 26 console_unblank(); 27 if (--oops_in_progress == 0) 28 wake_up_klogd(); 29 } 30 } 31 32 33