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/*
* drivers/misc/tegra-profiler/hrt.h
*
* Copyright (c) 2015, NVIDIA CORPORATION. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope 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.
*
*/
#ifndef __QUADD_HRT_H
#define __QUADD_HRT_H
#ifdef __KERNEL__
#include <linux/hrtimer.h>
#include <linux/limits.h>
#include "backtrace.h"
struct quadd_thread_data {
pid_t pid;
pid_t tgid;
};
struct quadd_cpu_context {
struct hrtimer hrtimer;
struct quadd_callchain cc;
char mmap_filename[PATH_MAX];
struct quadd_thread_data active_thread;
atomic_t nr_active;
};
struct timecounter;
struct quadd_hrt_ctx {
struct quadd_cpu_context __percpu *cpu_ctx;
u64 sample_period;
unsigned long low_addr;
struct quadd_ctx *quadd_ctx;
int active;
atomic_t nr_active_all_core;
atomic64_t counter_samples;
atomic64_t skipped_samples;
struct timer_list ma_timer;
unsigned int ma_period;
unsigned long vm_size_prev;
unsigned long rss_size_prev;
struct timecounter *tc;
int use_arch_timer;
unsigned int unw_method;
int get_stack_offset;
};
#define QUADD_HRT_MIN_FREQ 100
#define QUADD_U32_MAX (~(__u32)0)
struct quadd_hrt_ctx;
struct quadd_record_data;
struct quadd_module_state;
struct quadd_iovec;
struct quadd_hrt_ctx *quadd_hrt_init(struct quadd_ctx *ctx);
void quadd_hrt_deinit(void);
int quadd_hrt_start(void);
void quadd_hrt_stop(void);
void
quadd_put_sample_cur_cpu(struct quadd_record_data *data,
struct quadd_iovec *vec, int vec_count);
void
quadd_put_sample(struct quadd_record_data *data,
struct quadd_iovec *vec, int vec_count);
void quadd_hrt_get_state(struct quadd_module_state *state);
u64 quadd_get_time(void);
#endif /* __KERNEL__ */
#endif /* __QUADD_HRT_H */
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