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