Paul Mundt | 60a51fb | 2008-12-16 09:33:53 +0900 | [diff] [blame] | 1 | /* |
| 2 | * arch/sh/oprofile/init.c |
| 3 | * |
| 4 | * Copyright (C) 2003 - 2008 Paul Mundt |
| 5 | * |
| 6 | * Based on arch/mips/oprofile/common.c: |
| 7 | * |
| 8 | * Copyright (C) 2004, 2005 Ralf Baechle |
| 9 | * Copyright (C) 2005 MIPS Technologies, Inc. |
| 10 | * |
| 11 | * This file is subject to the terms and conditions of the GNU General Public |
| 12 | * License. See the file "COPYING" in the main directory of this archive |
| 13 | * for more details. |
| 14 | */ |
| 15 | #include <linux/kernel.h> |
| 16 | #include <linux/oprofile.h> |
| 17 | #include <linux/init.h> |
| 18 | #include <linux/errno.h> |
| 19 | #include <linux/smp.h> |
Matt Fleming | 86c8c04 | 2010-09-10 20:36:23 +0100 | [diff] [blame^] | 20 | #include <linux/perf_event.h> |
Paul Mundt | 60a51fb | 2008-12-16 09:33:53 +0900 | [diff] [blame] | 21 | #include <asm/processor.h> |
Paul Mundt | 60a51fb | 2008-12-16 09:33:53 +0900 | [diff] [blame] | 22 | |
Matt Fleming | 86c8c04 | 2010-09-10 20:36:23 +0100 | [diff] [blame^] | 23 | #ifdef CONFIG_HW_PERF_EVENTS |
Dave Peverley | 40a8b42 | 2008-12-16 09:35:40 +0900 | [diff] [blame] | 24 | extern void sh_backtrace(struct pt_regs * const regs, unsigned int depth); |
| 25 | |
Matt Fleming | 86c8c04 | 2010-09-10 20:36:23 +0100 | [diff] [blame^] | 26 | char *op_name_from_perf_id(void) |
Paul Mundt | 60a51fb | 2008-12-16 09:33:53 +0900 | [diff] [blame] | 27 | { |
Matt Fleming | 86c8c04 | 2010-09-10 20:36:23 +0100 | [diff] [blame^] | 28 | const char *pmu; |
| 29 | char buf[20]; |
| 30 | int size; |
Paul Mundt | 60a51fb | 2008-12-16 09:33:53 +0900 | [diff] [blame] | 31 | |
Matt Fleming | 86c8c04 | 2010-09-10 20:36:23 +0100 | [diff] [blame^] | 32 | pmu = perf_pmu_name(); |
| 33 | if (!pmu) |
| 34 | return NULL; |
Paul Mundt | 60a51fb | 2008-12-16 09:33:53 +0900 | [diff] [blame] | 35 | |
Matt Fleming | 86c8c04 | 2010-09-10 20:36:23 +0100 | [diff] [blame^] | 36 | size = snprintf(buf, sizeof(buf), "sh/%s", pmu); |
| 37 | if (size > -1 && size < sizeof(buf)) |
| 38 | return buf; |
Paul Mundt | 60a51fb | 2008-12-16 09:33:53 +0900 | [diff] [blame] | 39 | |
Matt Fleming | 86c8c04 | 2010-09-10 20:36:23 +0100 | [diff] [blame^] | 40 | return NULL; |
Paul Mundt | 60a51fb | 2008-12-16 09:33:53 +0900 | [diff] [blame] | 41 | } |
| 42 | |
| 43 | int __init oprofile_arch_init(struct oprofile_operations *ops) |
| 44 | { |
Dave Peverley | 40a8b42 | 2008-12-16 09:35:40 +0900 | [diff] [blame] | 45 | ops->backtrace = sh_backtrace; |
| 46 | |
Matt Fleming | 86c8c04 | 2010-09-10 20:36:23 +0100 | [diff] [blame^] | 47 | return oprofile_perf_init(ops); |
Paul Mundt | 60a51fb | 2008-12-16 09:33:53 +0900 | [diff] [blame] | 48 | } |
| 49 | |
Matt Fleming | 86c8c04 | 2010-09-10 20:36:23 +0100 | [diff] [blame^] | 50 | void __exit oprofile_arch_exit(void) |
Paul Mundt | 60a51fb | 2008-12-16 09:33:53 +0900 | [diff] [blame] | 51 | { |
Matt Fleming | 86c8c04 | 2010-09-10 20:36:23 +0100 | [diff] [blame^] | 52 | oprofile_perf_exit(); |
Paul Mundt | 60a51fb | 2008-12-16 09:33:53 +0900 | [diff] [blame] | 53 | } |
Matt Fleming | 86c8c04 | 2010-09-10 20:36:23 +0100 | [diff] [blame^] | 54 | #else |
| 55 | int __init oprofile_arch_init(struct oprofile_operations *ops) |
| 56 | { |
| 57 | pr_info("oprofile: hardware counters not available\n"); |
| 58 | return -ENODEV; |
| 59 | } |
| 60 | void __exit oprofile_arch_exit(void) {} |
| 61 | #endif /* CONFIG_HW_PERF_EVENTS */ |