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/**
* Copyright (C) ARM Limited 2013-2014. 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 as
* published by the Free Software Foundation.
*/
#ifndef PERFDRIVER_H
#define PERFDRIVER_H
#include "Driver.h"
// If debugfs is not mounted at /sys/kernel/debug, update DEBUGFS_PATH
#define DEBUGFS_PATH "/sys/kernel/debug"
#define EVENTS_PATH DEBUGFS_PATH "/tracing/events"
#define SCHED_SWITCH "sched/sched_switch"
class Buffer;
class DynBuf;
class PerfCounter;
class PerfGroup;
class PerfDriver : public Driver {
public:
PerfDriver();
~PerfDriver();
bool setup();
bool summary(Buffer *const buffer);
bool isSetup() const { return mIsSetup; }
bool claimCounter(const Counter &counter) const;
void resetCounters();
void setupCounter(Counter &counter);
int writeCounters(mxml_node_t *root) const;
bool enable(PerfGroup *group, Buffer *const buffer) const;
static long long getTracepointId(const char *const name, DynBuf *const printb);
private:
PerfCounter *findCounter(const Counter &counter) const;
void addCpuCounters(const char *const counterName, const int type, const int numCounters);
PerfCounter *mCounters;
bool mIsSetup;
// Intentionally undefined
PerfDriver(const PerfDriver &);
PerfDriver &operator=(const PerfDriver &);
};
#endif // PERFDRIVER_H
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