the-tree/lib/irq_regs.c

0001 // SPDX-License-Identifier: GPL-2.0-or-later
0002 /* saved per-CPU IRQ register pointer
0003  *
0004  * Copyright (C) 2006 Red Hat, Inc. All Rights Reserved.
0005  * Written by David Howells (dhowells@redhat.com)
0006  */
0007 #include <linux/export.h>
0008 #include <linux/percpu.h>
0009 #include <asm/irq_regs.h>
0010
0011 #ifndef ARCH_HAS_OWN_IRQ_REGS
0012 DEFINE_PER_CPU(struct pt_regs *, __irq_regs);
0013 EXPORT_PER_CPU_SYMBOL(__irq_regs);
0014 #endif