cpumask: Optimize cpumask_of_cpu in lib/smp_processor_id.c, fix
[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
16
17 void __attribute__((weak)) bust_spinlocks(int yes)
18 {
19         if (yes) {
20                 ++oops_in_progress;
21         } else {
22 #ifdef CONFIG_VT
23                 unblank_screen();
24 #endif
25                 if (--oops_in_progress == 0)
26                         wake_up_klogd();
27         }
28 }
29
30