From 2c3c1048746a4622d8c89a29670120dc8fab93c4 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 20:49:45 +0200 Subject: Adding upstream version 6.1.76. Signed-off-by: Daniel Baumann --- include/asm-generic/irq_regs.h | 33 +++++++++++++++++++++++++++++++++ 1 file changed, 33 insertions(+) create mode 100644 include/asm-generic/irq_regs.h (limited to 'include/asm-generic/irq_regs.h') diff --git a/include/asm-generic/irq_regs.h b/include/asm-generic/irq_regs.h new file mode 100644 index 000000000..2e7c6e89d --- /dev/null +++ b/include/asm-generic/irq_regs.h @@ -0,0 +1,33 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* Fallback per-CPU frame pointer holder + * + * Copyright (C) 2006 Red Hat, Inc. All Rights Reserved. + * Written by David Howells (dhowells@redhat.com) + */ + +#ifndef _ASM_GENERIC_IRQ_REGS_H +#define _ASM_GENERIC_IRQ_REGS_H + +#include + +/* + * Per-cpu current frame pointer - the location of the last exception frame on + * the stack + */ +DECLARE_PER_CPU(struct pt_regs *, __irq_regs); + +static inline struct pt_regs *get_irq_regs(void) +{ + return __this_cpu_read(__irq_regs); +} + +static inline struct pt_regs *set_irq_regs(struct pt_regs *new_regs) +{ + struct pt_regs *old_regs; + + old_regs = __this_cpu_read(__irq_regs); + __this_cpu_write(__irq_regs, new_regs); + return old_regs; +} + +#endif /* _ASM_GENERIC_IRQ_REGS_H */ -- cgit v1.2.3