bust_spinlocks.c

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/*
 * 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>
#include <linux/console.h>


void __attribute__((weak)) bust_spinlocks(int yes)
{
    if (yes) {
        ++oops_in_progress;
    } else {
#ifdef CONFIG_VT
        unblank_screen();
#endif
        console_unblank();
        if (--oops_in_progress == 0)
            wake_up_klogd();
    }
}