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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
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10#include <linux/kernel.h>
11#include <linux/spinlock.h>
12#include <linux/tty.h>
13#include <linux/wait.h>
14#include <linux/vt_kern.h>
b61312d3 15#include <linux/console.h>
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16
17
cefc8be8 18void __attribute__((weak)) bust_spinlocks(int yes)
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19{
20 if (yes) {
00442995 21 ++oops_in_progress;
1da177e4 22 } else {
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23#ifdef CONFIG_VT
24 unblank_screen();
25#endif
b61312d3 26 console_unblank();
00442995
JB
27 if (--oops_in_progress == 0)
28 wake_up_klogd();
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29 }
30}
31
32