| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0 |
| 2 | /* |
| 3 | * Code for supporting irq vector tracepoints. |
| 4 | * |
| 5 | * Copyright (C) 2013 Seiji Aguchi <seiji.aguchi@hds.com> |
| 6 | * |
| 7 | */ |
| 8 | #include <linux/jump_label.h> |
| 9 | #include <linux/atomic.h> |
| 10 | |
| 11 | #include <asm/hw_irq.h> |
| 12 | #include <asm/desc.h> |
| David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame] | 13 | #include <asm/trace/exceptions.h> |
| 14 | #include <asm/trace/irq_vectors.h> |
| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 15 | |
| 16 | DEFINE_STATIC_KEY_FALSE(trace_pagefault_key); |
| 17 | |
| 18 | int trace_pagefault_reg(void) |
| 19 | { |
| 20 | static_branch_inc(&trace_pagefault_key); |
| 21 | return 0; |
| 22 | } |
| 23 | |
| 24 | void trace_pagefault_unreg(void) |
| 25 | { |
| 26 | static_branch_dec(&trace_pagefault_key); |
| 27 | } |