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9#include <linux/compiler.h>
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
18extern struct op_mips_model op_model_mipsxx_ops __weak;
19extern struct op_mips_model op_model_loongson2_ops __weak;
20
21static struct op_mips_model *model;
22
23static struct op_counter_config ctr[20];
24
25static int op_mips_setup(void)
26{
27
28 model->reg_setup(ctr);
29
30
31 on_each_cpu(model->cpu_setup, NULL, 1);
32
33 return 0;
34}
35
36static int op_mips_create_files(struct super_block *sb, struct dentry *root)
37{
38 int i;
39
40 for (i = 0; i < model->num_counters; ++i) {
41 struct dentry *dir;
42 char buf[4];
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);
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);
53
54 oprofilefs_create_ulong(sb, dir, "unit_mask", &ctr[i].unit_mask);
55 }
56
57 return 0;
58}
59
60static int op_mips_start(void)
61{
62 on_each_cpu(model->cpu_start, NULL, 1);
63
64 return 0;
65}
66
67static void op_mips_stop(void)
68{
69
70 on_each_cpu(model->cpu_stop, NULL, 1);
71}
72
73int __init oprofile_arch_init(struct oprofile_operations *ops)
74{
75 struct op_mips_model *lmodel = NULL;
76 int res;
77
78 switch (current_cpu_type()) {
79 case CPU_5KC:
80 case CPU_M14KC:
81 case CPU_M14KEC:
82 case CPU_20KC:
83 case CPU_24K:
84 case CPU_25KF:
85 case CPU_34K:
86 case CPU_1004K:
87 case CPU_74K:
88 case CPU_LOONGSON1:
89 case CPU_SB1:
90 case CPU_SB1A:
91 case CPU_R10000:
92 case CPU_R12000:
93 case CPU_R14000:
94 case CPU_XLR:
95 lmodel = &op_model_mipsxx_ops;
96 break;
97
98 case CPU_LOONGSON2:
99 lmodel = &op_model_loongson2_ops;
100 break;
101 };
102
103 if (!lmodel)
104 return -ENODEV;
105
106 res = lmodel->init();
107 if (res)
108 return res;
109
110 model = lmodel;
111
112 ops->create_files = op_mips_create_files;
113 ops->setup = op_mips_setup;
114
115 ops->start = op_mips_start;
116 ops->stop = op_mips_stop;
117 ops->cpu_type = lmodel->cpu_type;
118 ops->backtrace = op_mips_backtrace;
119
120 printk(KERN_INFO "oprofile: using %s performance monitoring.\n",
121 lmodel->cpu_type);
122
123 return 0;
124}
125
126void oprofile_arch_exit(void)
127{
128 if (model)
129 model->exit();
130}
131