39 lines
905 B
C
39 lines
905 B
C
|
/*
|
||
|
|
* 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/spinlock.h>
|
||
|
|
#include <linux/tty.h>
|
||
|
|
#include <linux/wait.h>
|
||
|
|
#include <linux/vt_kern.h>
|
||
|
|
|
||
|
|
|
||
|
|
void bust_spinlocks(int yes)
|
||
|
|
{
|
||
|
|
if (yes) {
|
||
|
|
oops_in_progress = 1;
|
||
|
|
} else {
|
||
|
|
int loglevel_save = console_loglevel;
|
||
|
|
#ifdef CONFIG_VT
|
||
|
|
unblank_screen();
|
||
|
|
#endif
|
||
|
|
oops_in_progress = 0;
|
||
|
|
/*
|
||
|
|
* OK, the message is on the console. Now we call printk()
|
||
|
|
* without oops_in_progress set so that printk() will give klogd
|
||
|
|
* and the blanked console a poke. Hold onto your hats...
|
||
|
|
*/
|
||
|
|
console_loglevel = 15; /* NMI oopser may have shut the console up */
|
||
|
|
printk(" ");
|
||
|
|
console_loglevel = loglevel_save;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
|