181 lines
4.0 KiB
C
181 lines
4.0 KiB
C
/*
|
|
* Copyright (C) 2004 Anton Blanchard <anton@au.ibm.com>, IBM
|
|
*
|
|
* Based on alpha version.
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License
|
|
* as published by the Free Software Foundation; either version
|
|
* 2 of the License, or (at your option) any later version.
|
|
*/
|
|
|
|
#include <linux/oprofile.h>
|
|
#include <linux/init.h>
|
|
#include <linux/smp.h>
|
|
#include <linux/errno.h>
|
|
#include <asm/ptrace.h>
|
|
#include <asm/system.h>
|
|
#include <asm/pmc.h>
|
|
#include <asm/cputable.h>
|
|
|
|
#include "op_impl.h"
|
|
|
|
extern struct op_ppc64_model op_model_rs64;
|
|
extern struct op_ppc64_model op_model_power4;
|
|
static struct op_ppc64_model *model;
|
|
|
|
static struct op_counter_config ctr[OP_MAX_COUNTER];
|
|
static struct op_system_config sys;
|
|
|
|
static void op_handle_interrupt(struct pt_regs *regs)
|
|
{
|
|
model->handle_interrupt(regs, ctr);
|
|
}
|
|
|
|
static int op_ppc64_setup(void)
|
|
{
|
|
int err;
|
|
|
|
/* Grab the hardware */
|
|
err = reserve_pmc_hardware(op_handle_interrupt);
|
|
if (err)
|
|
return err;
|
|
|
|
/* Pre-compute the values to stuff in the hardware registers. */
|
|
model->reg_setup(ctr, &sys, model->num_counters);
|
|
|
|
/* Configure the registers on all cpus. */
|
|
on_each_cpu(model->cpu_setup, NULL, 0, 1);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void op_ppc64_shutdown(void)
|
|
{
|
|
release_pmc_hardware();
|
|
}
|
|
|
|
static void op_ppc64_cpu_start(void *dummy)
|
|
{
|
|
model->start(ctr);
|
|
}
|
|
|
|
static int op_ppc64_start(void)
|
|
{
|
|
on_each_cpu(op_ppc64_cpu_start, NULL, 0, 1);
|
|
return 0;
|
|
}
|
|
|
|
static inline void op_ppc64_cpu_stop(void *dummy)
|
|
{
|
|
model->stop();
|
|
}
|
|
|
|
static void op_ppc64_stop(void)
|
|
{
|
|
on_each_cpu(op_ppc64_cpu_stop, NULL, 0, 1);
|
|
}
|
|
|
|
static int op_ppc64_create_files(struct super_block *sb, struct dentry *root)
|
|
{
|
|
int i;
|
|
|
|
/*
|
|
* There is one mmcr0, mmcr1 and mmcra for setting the events for
|
|
* all of the counters.
|
|
*/
|
|
oprofilefs_create_ulong(sb, root, "mmcr0", &sys.mmcr0);
|
|
oprofilefs_create_ulong(sb, root, "mmcr1", &sys.mmcr1);
|
|
oprofilefs_create_ulong(sb, root, "mmcra", &sys.mmcra);
|
|
|
|
for (i = 0; i < model->num_counters; ++i) {
|
|
struct dentry *dir;
|
|
char buf[3];
|
|
|
|
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);
|
|
/*
|
|
* We dont support per counter user/kernel selection, but
|
|
* we leave the entries because userspace expects them
|
|
*/
|
|
oprofilefs_create_ulong(sb, dir, "kernel", &ctr[i].kernel);
|
|
oprofilefs_create_ulong(sb, dir, "user", &ctr[i].user);
|
|
oprofilefs_create_ulong(sb, dir, "unit_mask", &ctr[i].unit_mask);
|
|
}
|
|
|
|
oprofilefs_create_ulong(sb, root, "enable_kernel", &sys.enable_kernel);
|
|
oprofilefs_create_ulong(sb, root, "enable_user", &sys.enable_user);
|
|
oprofilefs_create_ulong(sb, root, "backtrace_spinlocks",
|
|
&sys.backtrace_spinlocks);
|
|
|
|
/* Default to tracing both kernel and user */
|
|
sys.enable_kernel = 1;
|
|
sys.enable_user = 1;
|
|
|
|
/* Turn on backtracing through spinlocks by default */
|
|
sys.backtrace_spinlocks = 1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int __init oprofile_arch_init(struct oprofile_operations *ops)
|
|
{
|
|
unsigned int pvr;
|
|
|
|
pvr = mfspr(SPRN_PVR);
|
|
|
|
switch (PVR_VER(pvr)) {
|
|
case PV_630:
|
|
case PV_630p:
|
|
model = &op_model_rs64;
|
|
break;
|
|
|
|
case PV_NORTHSTAR:
|
|
case PV_PULSAR:
|
|
case PV_ICESTAR:
|
|
case PV_SSTAR:
|
|
model = &op_model_rs64;
|
|
break;
|
|
|
|
case PV_POWER4:
|
|
case PV_POWER4p:
|
|
model = &op_model_power4;
|
|
break;
|
|
|
|
case PV_970:
|
|
case PV_970FX:
|
|
case PV_970MP:
|
|
model = &op_model_power4;
|
|
break;
|
|
|
|
case PV_POWER5:
|
|
case PV_POWER5p:
|
|
model = &op_model_power4;
|
|
break;
|
|
|
|
default:
|
|
return -ENODEV;
|
|
}
|
|
|
|
ops->cpu_type = cur_cpu_spec->oprofile_cpu_type;
|
|
model->num_counters = cur_cpu_spec->num_pmcs;
|
|
ops->create_files = op_ppc64_create_files;
|
|
ops->setup = op_ppc64_setup;
|
|
ops->shutdown = op_ppc64_shutdown;
|
|
ops->start = op_ppc64_start;
|
|
ops->stop = op_ppc64_stop;
|
|
|
|
printk(KERN_INFO "oprofile: using %s performance monitoring.\n",
|
|
ops->cpu_type);
|
|
|
|
return 0;
|
|
}
|
|
|
|
void oprofile_arch_exit(void)
|
|
{
|
|
}
|