[linux.git] / 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/kernel.h>
#include <linux/spinlock.h>
#include <linux/tty.h>
#include <linux/wait.h>
#include <linux/vt_kern.h>


void __attribute__((weak)) bust_spinlocks(int yes)
{
	if (yes) {
		++oops_in_progress;
	} else {
#ifdef CONFIG_VT
		unblank_screen();
#endif
		if (--oops_in_progress == 0)
			wake_up_klogd();
	}
}
Commit	Line	Data
1da177e4 LT	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
1da177e4 LT	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
cefc8be8	17	void __attribute__((weak)) bust_spinlocks(int yes)
1da177e4 LT	18	{
1da177e4 LT	19	if (yes) {
00442995	20	++oops_in_progress;
1da177e4	21	} else {
1da177e4 LT	22	#ifdef CONFIG_VT
	23	unblank_screen();
	24	#endif
00442995 JB	25	if (--oops_in_progress == 0)
00442995 JB	26	wake_up_klogd();
1da177e4 LT	27	}
	28	}
	29
	30