kernel26-2.6.12-alx-r9/lib/bust_spinlocks.c

/*
 * lib/bust_spinlocks.c
 *
 * Provides a minimal bust_spinlocks for architectures which don't have one of their own.
 *
 * bust_spinlocks() clears any spinlocks which would prevent oops, die(), BUG()
 * and panic() information from reaching the user.
 */

#include <linux/config.h>
#include <linux/kernel.h>
#include <linux/spinlock.h>
#include <linux/tty.h>
#include <linux/wait.h>
#include <linux/vt_kern.h>


void bust_spinlocks(int yes)
{
	if (yes) {
		oops_in_progress = 1;
	} else {
		int loglevel_save = console_loglevel;
#ifdef CONFIG_VT
		unblank_screen();
#endif
		oops_in_progress = 0;
		/*
		 * OK, the message is on the console.  Now we call printk()
		 * without oops_in_progress set so that printk() will give klogd
		 * and the blanked console a poke.  Hold onto your hats...
		 */
		console_loglevel = 15;		/* NMI oopser may have shut the console up */
		printk(" ");
		console_loglevel = loglevel_save;
	}
}


1	niro	628	/*
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/config.h>
11			#include <linux/kernel.h>
12			#include <linux/spinlock.h>
13			#include <linux/tty.h>
14			#include <linux/wait.h>
15			#include <linux/vt_kern.h>
16
17
18			void bust_spinlocks(int yes)
19			{
20			if (yes) {
21			oops_in_progress = 1;
22			} else {
23			int loglevel_save = console_loglevel;
24			#ifdef CONFIG_VT
25			unblank_screen();
26			#endif
27			oops_in_progress = 0;
28			/*
29			* OK, the message is on the console. Now we call printk()
30			* without oops_in_progress set so that printk() will give klogd
31			* and the blanked console a poke. Hold onto your hats...
32			*/
33			console_loglevel = 15; /* NMI oopser may have shut the console up */
34			printk(" ");
35			console_loglevel = loglevel_save;
36			}
37			}
38
39