1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * lib/bust_spinlocks.c
4 *
5 * Provides a minimal bust_spinlocks for architectures which don't
6 * have one of their own.
7 *
8 * bust_spinlocks() clears any spinlocks which would prevent oops, die(), BUG()
9 * and panic() information from reaching the user.
10 */
11
12 #include <linux/kernel.h>
13 #include <linux/printk.h>
14 #include <linux/spinlock.h>
15 #include <linux/tty.h>
16 #include <linux/wait.h>
17 #include <linux/vt_kern.h>
18 #include <linux/console.h>
19
20 void bust_spinlocks(int yes)
21 {
22 if (yes) {
23 ++oops_in_progress;
24 } else {
25 console_unblank();
26 if (--oops_in_progress == 0)
27 wake_up_klogd();
28 }
29 }
30
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.