mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-23 11:04:44 +08:00
131 lines
2.7 KiB
C
131 lines
2.7 KiB
C
/*
|
|
* 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/compiler.h>
|
|
#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 __weak;
|
|
extern struct op_mips_model op_model_loongson2_ops __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 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(root, buf);
|
|
|
|
oprofilefs_create_ulong(dir, "enabled", &ctr[i].enabled);
|
|
oprofilefs_create_ulong(dir, "event", &ctr[i].event);
|
|
oprofilefs_create_ulong(dir, "count", &ctr[i].count);
|
|
oprofilefs_create_ulong(dir, "kernel", &ctr[i].kernel);
|
|
oprofilefs_create_ulong(dir, "user", &ctr[i].user);
|
|
oprofilefs_create_ulong(dir, "exl", &ctr[i].exl);
|
|
/* Dummy. */
|
|
oprofilefs_create_ulong(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_M14KC:
|
|
case CPU_M14KEC:
|
|
case CPU_20KC:
|
|
case CPU_24K:
|
|
case CPU_25KF:
|
|
case CPU_34K:
|
|
case CPU_1004K:
|
|
case CPU_74K:
|
|
case CPU_LOONGSON1:
|
|
case CPU_SB1:
|
|
case CPU_SB1A:
|
|
case CPU_R10000:
|
|
case CPU_R12000:
|
|
case CPU_R14000:
|
|
case CPU_XLR:
|
|
lmodel = &op_model_mipsxx_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;
|
|
ops->backtrace = op_mips_backtrace;
|
|
|
|
printk(KERN_INFO "oprofile: using %s performance monitoring.\n",
|
|
lmodel->cpu_type);
|
|
|
|
return 0;
|
|
}
|
|
|
|
void oprofile_arch_exit(void)
|
|
{
|
|
if (model)
|
|
model->exit();
|
|
}
|