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Commit | Line | Data |
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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 | ||
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 | ||
19 | void __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 | } |