projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 60a51fbe PM |
1 | /* |
| 2 | * arch/sh/oprofile/init.c | |
| 3 | * | |
| 2e4f17d2 | 4 | * Copyright (C) 2003 - 2010 Paul Mundt |
| 60a51fbe PM |
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> | |
| 86c8c047 | 20 | #include <linux/perf_event.h> |
| 2e4f17d2 | 21 | #include <linux/slab.h> |
| 60a51fbe | 22 | #include <asm/processor.h> |
| 60a51fbe | 23 | |
| 40a8b421 DP |
24 | extern void sh_backtrace(struct pt_regs * const regs, unsigned int depth); |
| 25 | ||
| 7c842470 | 26 | #ifdef CONFIG_HW_PERF_EVENTS |
| 2e4f17d2 PM |
27 | /* |
| 28 | * This will need to be reworked when multiple PMUs are supported. | |
| 29 | */ | |
| 30 | static char *sh_pmu_op_name; | |
| 31 | ||
| 86c8c047 | 32 | char *op_name_from_perf_id(void) |
| 60a51fbe | 33 | { |
| 2e4f17d2 | 34 | return sh_pmu_op_name; |
| 60a51fbe PM |
35 | } |
| 36 | ||
| 86c8c047 | 37 | int __init oprofile_arch_init(struct oprofile_operations *ops) |
| 60a51fbe | 38 | { |
| 86c8c047 | 39 | ops->backtrace = sh_backtrace; |
| 60a51fbe | 40 | |
| 2e4f17d2 PM |
41 | if (perf_num_counters() == 0) |
| 42 | return -ENODEV; | |
| 43 | ||
| 44 | sh_pmu_op_name = kasprintf(GFP_KERNEL, "%s/%s", | |
| 45 | UTS_MACHINE, perf_pmu_name()); | |
| 46 | if (unlikely(!sh_pmu_op_name)) | |
| 47 | return -ENOMEM; | |
| 48 | ||
| 86c8c047 | 49 | return oprofile_perf_init(ops); |
| 60a51fbe PM |
50 | } |
| 51 | ||
| 55205c91 | 52 | void oprofile_arch_exit(void) |
| 60a51fbe | 53 | { |
| 86c8c047 | 54 | oprofile_perf_exit(); |
| 2e4f17d2 | 55 | kfree(sh_pmu_op_name); |
| 60a51fbe | 56 | } |
| 86c8c047 | 57 | #else |
| 60a51fbe PM |
58 | int __init oprofile_arch_init(struct oprofile_operations *ops) |
| 59 | { | |
| 7c842470 | 60 | ops->backtrace = sh_backtrace; |
| 86c8c047 | 61 | return -ENODEV; |
| 60a51fbe | 62 | } |
| 55205c91 | 63 | void oprofile_arch_exit(void) {} |
| 86c8c047 | 64 | #endif /* CONFIG_HW_PERF_EVENTS */ |