oprofile: more whitespace fixes
[linux-2.6.git] / arch / mips / oprofile / common.c
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  *
6  * Copyright (C) 2004, 2005 Ralf Baechle
7  * Copyright (C) 2005 MIPS Technologies, Inc.
8  */
9 #include <linux/errno.h>
10 #include <linux/init.h>
11 #include <linux/oprofile.h>
12 #include <linux/smp.h>
13 #include <asm/cpu-info.h>
14
15 #include "op_impl.h"
16
17 extern struct op_mips_model op_model_mipsxx_ops __attribute__((weak));
18 extern struct op_mips_model op_model_rm9000_ops __attribute__((weak));
19
20 static struct op_mips_model *model;
21
22 static struct op_counter_config ctr[20];
23
24 static int op_mips_setup(void)
25 {
26         /* Pre-compute the values to stuff in the hardware registers.  */
27         model->reg_setup(ctr);
28
29         /* Configure the registers on all cpus.  */
30         on_each_cpu(model->cpu_setup, NULL, 1);
31
32         return 0;
33 }
34
35 static int op_mips_create_files(struct super_block *sb, struct dentry *root)
36 {
37         int i;
38
39         for (i = 0; i < model->num_counters; ++i) {
40                 struct dentry *dir;
41                 char buf[4];
42
43                 snprintf(buf, sizeof buf, "%d", i);
44                 dir = oprofilefs_mkdir(sb, root, buf);
45
46                 oprofilefs_create_ulong(sb, dir, "enabled", &ctr[i].enabled);
47                 oprofilefs_create_ulong(sb, dir, "event", &ctr[i].event);
48                 oprofilefs_create_ulong(sb, dir, "count", &ctr[i].count);
49                 oprofilefs_create_ulong(sb, dir, "kernel", &ctr[i].kernel);
50                 oprofilefs_create_ulong(sb, dir, "user", &ctr[i].user);
51                 oprofilefs_create_ulong(sb, dir, "exl", &ctr[i].exl);
52                 /* Dummy.  */
53                 oprofilefs_create_ulong(sb, dir, "unit_mask", &ctr[i].unit_mask);
54         }
55
56         return 0;
57 }
58
59 static int op_mips_start(void)
60 {
61         on_each_cpu(model->cpu_start, NULL, 1);
62
63         return 0;
64 }
65
66 static void op_mips_stop(void)
67 {
68         /* Disable performance monitoring for all counters.  */
69         on_each_cpu(model->cpu_stop, NULL, 1);
70 }
71
72 int __init oprofile_arch_init(struct oprofile_operations *ops)
73 {
74         struct op_mips_model *lmodel = NULL;
75         int res;
76
77         switch (current_cpu_type()) {
78         case CPU_5KC:
79         case CPU_20KC:
80         case CPU_24K:
81         case CPU_25KF:
82         case CPU_34K:
83         case CPU_1004K:
84         case CPU_74K:
85         case CPU_SB1:
86         case CPU_SB1A:
87         case CPU_R10000:
88         case CPU_R12000:
89         case CPU_R14000:
90                 lmodel = &op_model_mipsxx_ops;
91                 break;
92
93         case CPU_RM9000:
94                 lmodel = &op_model_rm9000_ops;
95                 break;
96         };
97
98         if (!lmodel)
99                 return -ENODEV;
100
101         res = lmodel->init();
102         if (res)
103                 return res;
104
105         model = lmodel;
106
107         ops->create_files       = op_mips_create_files;
108         ops->setup              = op_mips_setup;
109         //ops->shutdown         = op_mips_shutdown;
110         ops->start              = op_mips_start;
111         ops->stop               = op_mips_stop;
112         ops->cpu_type           = lmodel->cpu_type;
113
114         printk(KERN_INFO "oprofile: using %s performance monitoring.\n",
115                lmodel->cpu_type);
116
117         return 0;
118 }
119
120 void oprofile_arch_exit(void)
121 {
122         if (model)
123                 model->exit();
124 }