82 lines
1.9 KiB
C
82 lines
1.9 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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* perf-function-hooks.c
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* DESCRIPTION
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* Hooks for ksapi.ko
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*/
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#include <linux/module.h>
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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 <linux/proc_fs.h>
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#include "cp15_registers.h"
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#include <asm/perftypes.h>
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#include "perf.h"
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/*
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* Function Pointers for when the module is installed...
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* Should we use a single "ready" variable for the testing
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* in the functions below, will be safer when module is removed
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* testing for a locked variable...
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*/
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VPVF pp_interrupt_out_ptr;
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VPVF pp_interrupt_in_ptr;
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VPULF pp_process_remove_ptr;
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unsigned int pp_loaded;
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EXPORT_SYMBOL(pp_loaded);
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atomic_t pm_op_lock;
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EXPORT_SYMBOL(pm_op_lock);
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/*
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FUNCTION VARIOUS
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DESCRIPTION
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Hooks to callinto the module functions after they are loaded. The
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above pointers will be set and then these functions are ready to be
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called.
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DEPENDENCIES
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THe per preocess performance monitor needs to be loaded ...
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RETURN VALUE
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SIDE EFFECTS
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*/
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void perf_mon_interrupt_out(void)
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{
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if (pp_loaded)
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(*pp_interrupt_out_ptr)();
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}
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EXPORT_SYMBOL(pp_interrupt_out_ptr);
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void perf_mon_interrupt_in(void)
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{
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if (pp_loaded)
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(*pp_interrupt_in_ptr)();
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}
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EXPORT_SYMBOL(pp_interrupt_in_ptr);
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void per_process_remove(unsigned long pid)
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{
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if (pp_loaded)
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(*pp_process_remove_ptr)(pid);
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}
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EXPORT_SYMBOL(pp_process_remove_ptr);
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