| /* |
| * This file is subject to the terms and conditions of the GNU General Public |
| * License. See the file "COPYING" in the main directory of this archive |
| * for more details. |
| * |
| * Copyright (C) 2004, 2005 Ralf Baechle |
| * Copyright (C) 2005 MIPS Technologies, Inc. |
| */ |
| #include <linux/errno.h> |
| #include <linux/init.h> |
| #include <linux/oprofile.h> |
| #include <linux/smp.h> |
| #include <asm/cpu-info.h> |
| |
| #include "op_impl.h" |
| |
| extern struct op_mips_model op_model_mipsxx_ops __attribute__((weak)); |
| extern struct op_mips_model op_model_rm9000_ops __attribute__((weak)); |
| extern struct op_mips_model op_model_loongson2_ops __attribute__((weak)); |
| |
| static struct op_mips_model *model; |
| |
| static struct op_counter_config ctr[20]; |
| |
| static int op_mips_setup(void) |
| { |
| /* Pre-compute the values to stuff in the hardware registers. */ |
| model->reg_setup(ctr); |
| |
| /* Configure the registers on all cpus. */ |
| on_each_cpu(model->cpu_setup, NULL, 1); |
| |
| return 0; |
| } |
| |
| static int op_mips_create_files(struct super_block *sb, struct dentry *root) |
| { |
| int i; |
| |
| for (i = 0; i < model->num_counters; ++i) { |
| struct dentry *dir; |
| char buf[4]; |
| |
| snprintf(buf, sizeof buf, "%d", i); |
| dir = oprofilefs_mkdir(sb, root, buf); |
| |
| oprofilefs_create_ulong(sb, dir, "enabled", &ctr[i].enabled); |
| oprofilefs_create_ulong(sb, dir, "event", &ctr[i].event); |
| oprofilefs_create_ulong(sb, dir, "count", &ctr[i].count); |
| oprofilefs_create_ulong(sb, dir, "kernel", &ctr[i].kernel); |
| oprofilefs_create_ulong(sb, dir, "user", &ctr[i].user); |
| oprofilefs_create_ulong(sb, dir, "exl", &ctr[i].exl); |
| /* Dummy. */ |
| oprofilefs_create_ulong(sb, dir, "unit_mask", &ctr[i].unit_mask); |
| } |
| |
| return 0; |
| } |
| |
| static int op_mips_start(void) |
| { |
| on_each_cpu(model->cpu_start, NULL, 1); |
| |
| return 0; |
| } |
| |
| static void op_mips_stop(void) |
| { |
| /* Disable performance monitoring for all counters. */ |
| on_each_cpu(model->cpu_stop, NULL, 1); |
| } |
| |
| int __init oprofile_arch_init(struct oprofile_operations *ops) |
| { |
| struct op_mips_model *lmodel = NULL; |
| int res; |
| |
| switch (current_cpu_type()) { |
| case CPU_5KC: |
| case CPU_20KC: |
| case CPU_24K: |
| case CPU_25KF: |
| case CPU_34K: |
| case CPU_1004K: |
| case CPU_74K: |
| case CPU_SB1: |
| case CPU_SB1A: |
| case CPU_R10000: |
| case CPU_R12000: |
| case CPU_R14000: |
| lmodel = &op_model_mipsxx_ops; |
| break; |
| |
| case CPU_RM9000: |
| lmodel = &op_model_rm9000_ops; |
| break; |
| case CPU_LOONGSON2: |
| lmodel = &op_model_loongson2_ops; |
| break; |
| }; |
| |
| if (!lmodel) |
| return -ENODEV; |
| |
| res = lmodel->init(); |
| if (res) |
| return res; |
| |
| model = lmodel; |
| |
| ops->create_files = op_mips_create_files; |
| ops->setup = op_mips_setup; |
| //ops->shutdown = op_mips_shutdown; |
| ops->start = op_mips_start; |
| ops->stop = op_mips_stop; |
| ops->cpu_type = lmodel->cpu_type; |
| |
| printk(KERN_INFO "oprofile: using %s performance monitoring.\n", |
| lmodel->cpu_type); |
| |
| return 0; |
| } |
| |
| void oprofile_arch_exit(void) |
| { |
| if (model) |
| model->exit(); |
| } |