// SPDX-License-Identifier: GPL-2.0
  /*
   * 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/printk.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();
  	}
  }