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/* Copyright (c) 2010, The Linux Foundation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
* only version 2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
/*
per.c
DESCRIPTION: Performance count interface for linux via proc in the T32
command file style
*/
#include <linux/module.h>
#include <linux/init.h>
#include <linux/sched.h>
#include <linux/sysrq.h>
#include <linux/time.h>
#include "linux/proc_fs.h"
#include "linux/kernel_stat.h"
#include "asm/uaccess.h"
#include "cp15_registers.h"
#include "perf.h"
#define PM_PER_ERR -1
/*
FUNCTION perf_if_proc_init
DESCRIPTION Initialize the proc interface for thje performance data.
*/
static __init int per_init(void)
{
if (atomic_read(&pm_op_lock) == 1) {
printk(KERN_INFO "Can not load KSAPI, monitors are in use\n");
return PM_PER_ERR;
}
atomic_set(&pm_op_lock, 1);
per_process_perf_init();
printk(KERN_INFO "ksapi init\n");
return 0;
}
static void __exit per_exit(void)
{
per_process_perf_exit();
printk(KERN_INFO "ksapi exit\n");
atomic_set(&pm_op_lock, 0);
}
MODULE_LICENSE("GPL v2");
module_init(per_init);
module_exit(per_exit);
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