i386: move oprofile

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 0 insertions, 477 deletions

diff --git a/arch/i386/oprofile/nmi_int.c b/arch/i386/oprofile/nmi_int.c
deleted file mode 100644
index 11b7a51566a8..000000000000
--- a/arch/i386/oprofile/nmi_int.c
+++ /dev/null
@@ -1,477 +0,0 @@
-/**
- * @file nmi_int.c
- *
- * @remark Copyright 2002 OProfile authors
- * @remark Read the file COPYING
- *
- * @author John Levon <levon@movementarian.org>
- */
-
-#include <linux/init.h>
-#include <linux/notifier.h>
-#include <linux/smp.h>
-#include <linux/oprofile.h>
-#include <linux/sysdev.h>
-#include <linux/slab.h>
-#include <linux/moduleparam.h>
-#include <linux/kdebug.h>
-#include <asm/nmi.h>
-#include <asm/msr.h>
-#include <asm/apic.h>
- 
-#include "op_counter.h"
-#include "op_x86_model.h"
-
-static struct op_x86_model_spec const * model;
-static struct op_msrs cpu_msrs[NR_CPUS];
-static unsigned long saved_lvtpc[NR_CPUS];
-
-static int nmi_start(void);
-static void nmi_stop(void);
-
-/* 0 == registered but off, 1 == registered and on */
-static int nmi_enabled = 0;
-
-#ifdef CONFIG_PM
-
-static int nmi_suspend(struct sys_device *dev, pm_message_t state)
-{
-	if (nmi_enabled == 1)
-		nmi_stop();
-	return 0;
-}
-
-
-static int nmi_resume(struct sys_device *dev)
-{
-	if (nmi_enabled == 1)
-		nmi_start();
-	return 0;
-}
-
-
-static struct sysdev_class oprofile_sysclass = {
-	set_kset_name("oprofile"),
-	.resume		= nmi_resume,
-	.suspend	= nmi_suspend,
-};
-
-
-static struct sys_device device_oprofile = {
-	.id	= 0,
-	.cls	= &oprofile_sysclass,
-};
-
-
-static int __init init_sysfs(void)
-{
-	int error;
-	if (!(error = sysdev_class_register(&oprofile_sysclass)))
-		error = sysdev_register(&device_oprofile);
-	return error;
-}
-
-
-static void exit_sysfs(void)
-{
-	sysdev_unregister(&device_oprofile);
-	sysdev_class_unregister(&oprofile_sysclass);
-}
-
-#else
-#define init_sysfs() do { } while (0)
-#define exit_sysfs() do { } while (0)
-#endif /* CONFIG_PM */
-
-static int profile_exceptions_notify(struct notifier_block *self,
-				     unsigned long val, void *data)
-{
-	struct die_args *args = (struct die_args *)data;
-	int ret = NOTIFY_DONE;
-	int cpu = smp_processor_id();
-
-	switch(val) {
-	case DIE_NMI:
-		if (model->check_ctrs(args->regs, &cpu_msrs[cpu]))
-			ret = NOTIFY_STOP;
-		break;
-	default:
-		break;
-	}
-	return ret;
-}
-
-static void nmi_cpu_save_registers(struct op_msrs * msrs)
-{
-	unsigned int const nr_ctrs = model->num_counters;
-	unsigned int const nr_ctrls = model->num_controls; 
-	struct op_msr * counters = msrs->counters;
-	struct op_msr * controls = msrs->controls;
-	unsigned int i;
-
-	for (i = 0; i < nr_ctrs; ++i) {
-		if (counters[i].addr){
-			rdmsr(counters[i].addr,
-				counters[i].saved.low,
-				counters[i].saved.high);
-		}
-	}
- 
-	for (i = 0; i < nr_ctrls; ++i) {
-		if (controls[i].addr){
-			rdmsr(controls[i].addr,
-				controls[i].saved.low,
-				controls[i].saved.high);
-		}
-	}
-}
-
-
-static void nmi_save_registers(void * dummy)
-{
-	int cpu = smp_processor_id();
-	struct op_msrs * msrs = &cpu_msrs[cpu];
-	nmi_cpu_save_registers(msrs);
-}
-
-
-static void free_msrs(void)
-{
-	int i;
-	for_each_possible_cpu(i) {
-		kfree(cpu_msrs[i].counters);
-		cpu_msrs[i].counters = NULL;
-		kfree(cpu_msrs[i].controls);
-		cpu_msrs[i].controls = NULL;
-	}
-}
-
-
-static int allocate_msrs(void)
-{
-	int success = 1;
-	size_t controls_size = sizeof(struct op_msr) * model->num_controls;
-	size_t counters_size = sizeof(struct op_msr) * model->num_counters;
-
-	int i;
-	for_each_possible_cpu(i) {
-		cpu_msrs[i].counters = kmalloc(counters_size, GFP_KERNEL);
-		if (!cpu_msrs[i].counters) {
-			success = 0;
-			break;
-		}
-		cpu_msrs[i].controls = kmalloc(controls_size, GFP_KERNEL);
-		if (!cpu_msrs[i].controls) {
-			success = 0;
-			break;
-		}
-	}
-
-	if (!success)
-		free_msrs();
-
-	return success;
-}
-
-
-static void nmi_cpu_setup(void * dummy)
-{
-	int cpu = smp_processor_id();
-	struct op_msrs * msrs = &cpu_msrs[cpu];
-	spin_lock(&oprofilefs_lock);
-	model->setup_ctrs(msrs);
-	spin_unlock(&oprofilefs_lock);
-	saved_lvtpc[cpu] = apic_read(APIC_LVTPC);
-	apic_write(APIC_LVTPC, APIC_DM_NMI);
-}
-
-static struct notifier_block profile_exceptions_nb = {
-	.notifier_call = profile_exceptions_notify,
-	.next = NULL,
-	.priority = 0
-};
-
-static int nmi_setup(void)
-{
-	int err=0;
-	int cpu;
-
-	if (!allocate_msrs())
-		return -ENOMEM;
-
-	if ((err = register_die_notifier(&profile_exceptions_nb))){
-		free_msrs();
-		return err;
-	}
-
-	/* We need to serialize save and setup for HT because the subset
-	 * of msrs are distinct for save and setup operations
-	 */
-
-	/* Assume saved/restored counters are the same on all CPUs */
-	model->fill_in_addresses(&cpu_msrs[0]);
-	for_each_possible_cpu (cpu) {
-		if (cpu != 0) {
-			memcpy(cpu_msrs[cpu].counters, cpu_msrs[0].counters,
-				sizeof(struct op_msr) * model->num_counters);
-
-			memcpy(cpu_msrs[cpu].controls, cpu_msrs[0].controls,
-				sizeof(struct op_msr) * model->num_controls);
-		}
-
-	}
-	on_each_cpu(nmi_save_registers, NULL, 0, 1);
-	on_each_cpu(nmi_cpu_setup, NULL, 0, 1);
-	nmi_enabled = 1;
-	return 0;
-}
-
-
-static void nmi_restore_registers(struct op_msrs * msrs)
-{
-	unsigned int const nr_ctrs = model->num_counters;
-	unsigned int const nr_ctrls = model->num_controls; 
-	struct op_msr * counters = msrs->counters;
-	struct op_msr * controls = msrs->controls;
-	unsigned int i;
-
-	for (i = 0; i < nr_ctrls; ++i) {
-		if (controls[i].addr){
-			wrmsr(controls[i].addr,
-				controls[i].saved.low,
-				controls[i].saved.high);
-		}
-	}
- 
-	for (i = 0; i < nr_ctrs; ++i) {
-		if (counters[i].addr){
-			wrmsr(counters[i].addr,
-				counters[i].saved.low,
-				counters[i].saved.high);
-		}
-	}
-}
- 
-
-static void nmi_cpu_shutdown(void * dummy)
-{
-	unsigned int v;
-	int cpu = smp_processor_id();
-	struct op_msrs * msrs = &cpu_msrs[cpu];
- 
-	/* restoring APIC_LVTPC can trigger an apic error because the delivery
-	 * mode and vector nr combination can be illegal. That's by design: on
-	 * power on apic lvt contain a zero vector nr which are legal only for
-	 * NMI delivery mode. So inhibit apic err before restoring lvtpc
-	 */
-	v = apic_read(APIC_LVTERR);
-	apic_write(APIC_LVTERR, v | APIC_LVT_MASKED);
-	apic_write(APIC_LVTPC, saved_lvtpc[cpu]);
-	apic_write(APIC_LVTERR, v);
-	nmi_restore_registers(msrs);
-	model->shutdown(msrs);
-}
-
- 
-static void nmi_shutdown(void)
-{
-	nmi_enabled = 0;
-	on_each_cpu(nmi_cpu_shutdown, NULL, 0, 1);
-	unregister_die_notifier(&profile_exceptions_nb);
-	free_msrs();
-}
-
- 
-static void nmi_cpu_start(void * dummy)
-{
-	struct op_msrs const * msrs = &cpu_msrs[smp_processor_id()];
-	model->start(msrs);
-}
- 
-
-static int nmi_start(void)
-{
-	on_each_cpu(nmi_cpu_start, NULL, 0, 1);
-	return 0;
-}
- 
- 
-static void nmi_cpu_stop(void * dummy)
-{
-	struct op_msrs const * msrs = &cpu_msrs[smp_processor_id()];
-	model->stop(msrs);
-}
- 
- 
-static void nmi_stop(void)
-{
-	on_each_cpu(nmi_cpu_stop, NULL, 0, 1);
-}
-
-
-struct op_counter_config counter_config[OP_MAX_COUNTER];
-
-static int nmi_create_files(struct super_block * sb, struct dentry * root)
-{
-	unsigned int i;
-
-	for (i = 0; i < model->num_counters; ++i) {
-		struct dentry * dir;
-		char buf[4];
- 
- 		/* quick little hack to _not_ expose a counter if it is not
-		 * available for use.  This should protect userspace app.
-		 * NOTE:  assumes 1:1 mapping here (that counters are organized
-		 *        sequentially in their struct assignment).
-		 */
-		if (unlikely(!avail_to_resrv_perfctr_nmi_bit(i)))
-			continue;
-
-		snprintf(buf,  sizeof(buf), "%d", i);
-		dir = oprofilefs_mkdir(sb, root, buf);
-		oprofilefs_create_ulong(sb, dir, "enabled", &counter_config[i].enabled); 
-		oprofilefs_create_ulong(sb, dir, "event", &counter_config[i].event); 
-		oprofilefs_create_ulong(sb, dir, "count", &counter_config[i].count); 
-		oprofilefs_create_ulong(sb, dir, "unit_mask", &counter_config[i].unit_mask); 
-		oprofilefs_create_ulong(sb, dir, "kernel", &counter_config[i].kernel); 
-		oprofilefs_create_ulong(sb, dir, "user", &counter_config[i].user); 
-	}
-
-	return 0;
-}
- 
-static int p4force;
-module_param(p4force, int, 0);
- 
-static int __init p4_init(char ** cpu_type)
-{
-	__u8 cpu_model = boot_cpu_data.x86_model;
-
-	if (!p4force && (cpu_model > 6 || cpu_model == 5))
-		return 0;
-
-#ifndef CONFIG_SMP
-	*cpu_type = "i386/p4";
-	model = &op_p4_spec;
-	return 1;
-#else
-	switch (smp_num_siblings) {
-		case 1:
-			*cpu_type = "i386/p4";
-			model = &op_p4_spec;
-			return 1;
-
-		case 2:
-			*cpu_type = "i386/p4-ht";
-			model = &op_p4_ht2_spec;
-			return 1;
-	}
-#endif
-
-	printk(KERN_INFO "oprofile: P4 HyperThreading detected with > 2 threads\n");
-	printk(KERN_INFO "oprofile: Reverting to timer mode.\n");
-	return 0;
-}
-
-
-static int __init ppro_init(char ** cpu_type)
-{
-	__u8 cpu_model = boot_cpu_data.x86_model;
-
-	if (cpu_model == 14)
-		*cpu_type = "i386/core";
-	else if (cpu_model == 15)
-		*cpu_type = "i386/core_2";
-	else if (cpu_model > 0xd)
-		return 0;
-	else if (cpu_model == 9) {
-		*cpu_type = "i386/p6_mobile";
-	} else if (cpu_model > 5) {
-		*cpu_type = "i386/piii";
-	} else if (cpu_model > 2) {
-		*cpu_type = "i386/pii";
-	} else {
-		*cpu_type = "i386/ppro";
-	}
-
-	model = &op_ppro_spec;
-	return 1;
-}
-
-/* in order to get sysfs right */
-static int using_nmi;
-
-int __init op_nmi_init(struct oprofile_operations *ops)
-{
-	__u8 vendor = boot_cpu_data.x86_vendor;
-	__u8 family = boot_cpu_data.x86;
-	char *cpu_type;
-
-	if (!cpu_has_apic)
-		return -ENODEV;
- 
-	switch (vendor) {
-		case X86_VENDOR_AMD:
-			/* Needs to be at least an Athlon (or hammer in 32bit mode) */
-
-			switch (family) {
-			default:
-				return -ENODEV;
-			case 6:
-				model = &op_athlon_spec;
-				cpu_type = "i386/athlon";
-				break;
-			case 0xf:
-				model = &op_athlon_spec;
-				/* Actually it could be i386/hammer too, but give
-				   user space an consistent name. */
-				cpu_type = "x86-64/hammer";
-				break;
-			case 0x10:
-				model = &op_athlon_spec;
-				cpu_type = "x86-64/family10";
-				break;
-			}
-			break;
- 
-		case X86_VENDOR_INTEL:
-			switch (family) {
-				/* Pentium IV */
-				case 0xf:
-					if (!p4_init(&cpu_type))
-						return -ENODEV;
-					break;
-
-				/* A P6-class processor */
-				case 6:
-					if (!ppro_init(&cpu_type))
-						return -ENODEV;
-					break;
-
-				default:
-					return -ENODEV;
-			}
-			break;
-
-		default:
-			return -ENODEV;
-	}
-
-	init_sysfs();
-	using_nmi = 1;
-	ops->create_files = nmi_create_files;
-	ops->setup = nmi_setup;
-	ops->shutdown = nmi_shutdown;
-	ops->start = nmi_start;
-	ops->stop = nmi_stop;
-	ops->cpu_type = cpu_type;
-	printk(KERN_INFO "oprofile: using NMI interrupt.\n");
-	return 0;
-}
-
-
-void op_nmi_exit(void)
-{
-	if (using_nmi)
-		exit_sysfs();
-}