// SPDX-License-Identifier: GPL-2.0 /* * 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/kernel.h> #include <linux/printk.h> #include <linux/spinlock.h> #include <linux/tty.h> #include <linux/wait.h> #include <linux/vt_kern.h> #include <linux/console.h> void bust_spinlocks(int yes) { if (yes) { ++oops_in_progress; } else { #ifdef CONFIG_VT unblank_screen(); #endif console_unblank(); if (--oops_in_progress == 0) wake_up_klogd(); } }