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/spinlock.h>
12 #include <linux/tty.h>
13 #include <linux/wait.h>
14 #include <linux/vt_kern.h>
15 #include <linux/console.h>
16
17
18 void __attribute__((weak)) bust_spinlocks(int yes)
19 {
20 if (yes) {
21 ++oops_in_progress;
22 } else {
23 #ifdef CONFIG_VT
24 unblank_screen();
25 #endif
26 console_unblank();
27 if (--oops_in_progress == 0)
28 wake_up_klogd();
29 }
30 }
31
32
33
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