33 lines
696 B
C
33 lines
696 B
C
|
// 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 __attribute__((weak)) 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();
|
||
|
|
}
|
||
|
|
}
|