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/printk.h>
12#include <linux/spinlock.h>
13#include <linux/tty.h>
14#include <linux/wait.h>
15#include <linux/vt_kern.h>
16#include <linux/console.h>
17
18
19void __attribute__((weak)) bust_spinlocks(int yes)
20{
21	if (yes) {
22		++oops_in_progress;
23	} else {
24#ifdef CONFIG_VT
25		unblank_screen();
26#endif
27		console_unblank();
28		if (--oops_in_progress == 0)
29			wake_up_klogd();
30	}
31}

 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
20void bust_spinlocks(int yes)
 
21{
22	if (yes) {
23		++oops_in_progress;
24	} else {
25#ifdef CONFIG_VT
26		unblank_screen();
27#endif
28		console_unblank();
29		if (--oops_in_progress == 0)
30			wake_up_klogd();
31	}
32}