Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3)  * lib/bust_spinlocks.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5)  * Provides a minimal bust_spinlocks for architectures which don't
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6)  * have one of their own.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8)  * bust_spinlocks() clears any spinlocks which would prevent oops, die(), BUG()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9)  * and panic() information from reaching the user.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/printk.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/spinlock.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/tty.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/wait.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/vt_kern.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/console.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) void bust_spinlocks(int yes)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) 	if (yes) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) 		++oops_in_progress;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 	} else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #ifdef CONFIG_VT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 		unblank_screen();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 		console_unblank();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 		if (--oops_in_progress == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 			wake_up_klogd();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) }