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/*
* arch/ubicom32/mach-common/profile.h
* Private data for the profile module
*
* (C) Copyright 2009, Ubicom, Inc.
*
* This file is part of the Ubicom32 Linux Kernel Port.
*
* The Ubicom32 Linux Kernel Port is free software: you can redistribute
* it and/or modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation, either version 2 of the
* License, or (at your option) any later version.
*
* The Ubicom32 Linux Kernel Port 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.
*
* You should have received a copy of the GNU General Public License
* along with the Ubicom32 Linux Kernel Port. If not,
* see <http://www.gnu.org/licenses/>.
*
* Ubicom32 implementation derived from (with many thanks):
* arch/m68knommu
* arch/blackfin
* arch/parisc
*/
#include <linux/types.h>
#include <asm/devtree.h>
#include "profpkt.h"
#ifndef _PROFILE_H_
#define _PROFILE_H_
#define PROFILE_MAX_THREADS 16
#define PROFILE_MAX_SAMPLES 1024
struct profile_sample;
struct oprofile_sample;
/*
* values chosen so all counter values fit in a single UDP packet
*/
#define PROFILE_NODE_MAX_COUNTERS 32
struct profile_counter {
char name[PROFILE_COUNTER_NAME_LENGTH];
unsigned int value;
};
struct profilenode {
struct devtree_node dn;
volatile u32_t enabled; /* Is the profiler enabled to take samples? */
volatile u32_t busy; /* set when the samples are being read by the driver */
volatile u32_t rate; /* What is the sampling rate? */
volatile u32_t enabled_threads; /* which threads were enabled at the last sample time */
volatile u32_t hrt; /* HRT threads */
volatile u32_t profiler_thread; /* thread running the profile sampler */
volatile u32_t clocks; /* system clock timer at last sample */
volatile u32_t clock_freq; /* clock frequency in Hz */
volatile u32_t ddr_freq; /* memory frequency */
volatile u32_t cpu_id; /* chip_id register */
volatile u32_t inst_count[PROFILE_MAX_THREADS]; /* sampled instruction counts at most recent sample */
volatile u32_t stats[4]; /* contents of the cache statistics counters */
volatile u16_t head; /* sample taker puts samples here */
volatile u16_t tail; /* packet filler takes samples here */
volatile u16_t count; /* number of valid samples */
volatile u16_t max_samples; /* how many samples can be in the samples array */
struct profile_sample *samples; /* samples array allocated by the linux driver */
volatile u32_t num_counters; /* how many registered performance counters */
volatile struct profile_counter counters[PROFILE_NODE_MAX_COUNTERS];
/* unimplemented interface for future oprofile work */
volatile u16_t oprofile_head; /* sample taker puts samples here */
volatile u16_t oprofile_tail; /* packet filler takes samples here */
volatile u16_t oprofile_count; /* how many oprofile sampels are are in use */
volatile u16_t oprofile_max_samples; /* samples array size for oprofile samples */
struct oprofile_sample *oprofile_samples; /* oprofile sample buffer */
};
#endif
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