Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
[linux-2.6.git] / lib / bust_spinlocks.c
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