Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * This file is subject to the terms and conditions of the GNU General Public | |
3 | * License. See the file "COPYING" in the main directory of this archive | |
4 | * for more details. | |
5 | * | |
54176736 RB |
6 | * Copyright (C) 2004, 2005 Ralf Baechle |
7 | * Copyright (C) 2005 MIPS Technologies, Inc. | |
1da177e4 | 8 | */ |
e52dd9fc | 9 | #include <linux/compiler.h> |
1da177e4 LT |
10 | #include <linux/errno.h> |
11 | #include <linux/init.h> | |
12 | #include <linux/oprofile.h> | |
13 | #include <linux/smp.h> | |
14 | #include <asm/cpu-info.h> | |
15 | ||
16 | #include "op_impl.h" | |
17 | ||
e52dd9fc | 18 | extern struct op_mips_model op_model_mipsxx_ops __weak; |
e52dd9fc | 19 | extern struct op_mips_model op_model_loongson2_ops __weak; |
1da177e4 LT |
20 | |
21 | static struct op_mips_model *model; | |
22 | ||
23 | static struct op_counter_config ctr[20]; | |
24 | ||
25 | static int op_mips_setup(void) | |
26 | { | |
27 | /* Pre-compute the values to stuff in the hardware registers. */ | |
28 | model->reg_setup(ctr); | |
29 | ||
30 | /* Configure the registers on all cpus. */ | |
15c8b6c1 | 31 | on_each_cpu(model->cpu_setup, NULL, 1); |
1da177e4 LT |
32 | |
33 | return 0; | |
34 | } | |
35 | ||
25ad2913 | 36 | static int op_mips_create_files(struct super_block *sb, struct dentry *root) |
1da177e4 LT |
37 | { |
38 | int i; | |
39 | ||
40 | for (i = 0; i < model->num_counters; ++i) { | |
41 | struct dentry *dir; | |
0c6856f7 | 42 | char buf[4]; |
1da177e4 LT |
43 | |
44 | snprintf(buf, sizeof buf, "%d", i); | |
45 | dir = oprofilefs_mkdir(sb, root, buf); | |
46 | ||
47 | oprofilefs_create_ulong(sb, dir, "enabled", &ctr[i].enabled); | |
48 | oprofilefs_create_ulong(sb, dir, "event", &ctr[i].event); | |
49 | oprofilefs_create_ulong(sb, dir, "count", &ctr[i].count); | |
1da177e4 LT |
50 | oprofilefs_create_ulong(sb, dir, "kernel", &ctr[i].kernel); |
51 | oprofilefs_create_ulong(sb, dir, "user", &ctr[i].user); | |
52 | oprofilefs_create_ulong(sb, dir, "exl", &ctr[i].exl); | |
54176736 | 53 | /* Dummy. */ |
1da177e4 LT |
54 | oprofilefs_create_ulong(sb, dir, "unit_mask", &ctr[i].unit_mask); |
55 | } | |
56 | ||
57 | return 0; | |
58 | } | |
59 | ||
60 | static int op_mips_start(void) | |
61 | { | |
15c8b6c1 | 62 | on_each_cpu(model->cpu_start, NULL, 1); |
1da177e4 LT |
63 | |
64 | return 0; | |
65 | } | |
66 | ||
67 | static void op_mips_stop(void) | |
68 | { | |
69 | /* Disable performance monitoring for all counters. */ | |
15c8b6c1 | 70 | on_each_cpu(model->cpu_stop, NULL, 1); |
1da177e4 LT |
71 | } |
72 | ||
54176736 | 73 | int __init oprofile_arch_init(struct oprofile_operations *ops) |
1da177e4 LT |
74 | { |
75 | struct op_mips_model *lmodel = NULL; | |
54176736 | 76 | int res; |
1da177e4 | 77 | |
10cc3529 | 78 | switch (current_cpu_type()) { |
2065988e | 79 | case CPU_5KC: |
113c62d9 | 80 | case CPU_M14KC: |
2065988e | 81 | case CPU_20KC: |
1da177e4 | 82 | case CPU_24K: |
2065988e | 83 | case CPU_25KF: |
fcfd980c | 84 | case CPU_34K: |
39b8d525 | 85 | case CPU_1004K: |
c620953c | 86 | case CPU_74K: |
2fa36399 | 87 | case CPU_LOONGSON1: |
c03bc121 MM |
88 | case CPU_SB1: |
89 | case CPU_SB1A: | |
714cfe78 RB |
90 | case CPU_R10000: |
91 | case CPU_R12000: | |
92 | case CPU_R14000: | |
c783390a | 93 | case CPU_XLR: |
1acf1ca7 | 94 | lmodel = &op_model_mipsxx_ops; |
1da177e4 LT |
95 | break; |
96 | ||
67b35e5d WZ |
97 | case CPU_LOONGSON2: |
98 | lmodel = &op_model_loongson2_ops; | |
99 | break; | |
1da177e4 LT |
100 | }; |
101 | ||
102 | if (!lmodel) | |
54176736 | 103 | return -ENODEV; |
1da177e4 | 104 | |
54176736 RB |
105 | res = lmodel->init(); |
106 | if (res) | |
107 | return res; | |
1da177e4 LT |
108 | |
109 | model = lmodel; | |
110 | ||
54176736 RB |
111 | ops->create_files = op_mips_create_files; |
112 | ops->setup = op_mips_setup; | |
113 | //ops->shutdown = op_mips_shutdown; | |
114 | ops->start = op_mips_start; | |
115 | ops->stop = op_mips_stop; | |
116 | ops->cpu_type = lmodel->cpu_type; | |
5f307491 | 117 | ops->backtrace = op_mips_backtrace; |
1da177e4 LT |
118 | |
119 | printk(KERN_INFO "oprofile: using %s performance monitoring.\n", | |
120 | lmodel->cpu_type); | |
54176736 RB |
121 | |
122 | return 0; | |
1da177e4 LT |
123 | } |
124 | ||
125 | void oprofile_arch_exit(void) | |
126 | { | |
49e31ca8 RB |
127 | if (model) |
128 | model->exit(); | |
1da177e4 | 129 | } |