121 lines
2.6 KiB
C
121 lines
2.6 KiB
C
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/*
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* drivers/misc/tegra-profiler/hrt.h
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*
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* Copyright (c) 2015-2020, NVIDIA CORPORATION. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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*/
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#ifndef __QUADD_HRT_H
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#define __QUADD_HRT_H
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#ifdef __KERNEL__
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#include <linux/types.h>
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#include <linux/hrtimer.h>
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#include <linux/limits.h>
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#include "backtrace.h"
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struct quadd_thread_data {
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pid_t pid;
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pid_t tgid;
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};
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struct quadd_cpu_context {
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struct hrtimer hrtimer;
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struct quadd_callchain cc;
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char mmap_filename[PATH_MAX];
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struct quadd_thread_data active_thread;
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unsigned int is_sampling_enabled:1;
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unsigned int is_tracing_enabled:1;
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};
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static inline int hrt_is_active(struct quadd_cpu_context *cpu_ctx)
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{
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return cpu_ctx->is_sampling_enabled || cpu_ctx->is_tracing_enabled;
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}
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struct timecounter;
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struct quadd_hrt_ctx {
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struct quadd_cpu_context __percpu *cpu_ctx;
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u64 sample_period;
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unsigned long low_addr;
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struct quadd_ctx *quadd_ctx;
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atomic_t active;
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atomic_t mmap_active;
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atomic64_t counter_samples;
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atomic64_t skipped_samples;
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atomic_t seqid;
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struct timer_list ma_timer;
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unsigned int ma_period;
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unsigned long vm_size_prev;
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unsigned long rss_size_prev;
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pid_t root_pid;
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struct list_head pid_list;
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raw_spinlock_t pid_list_lock;
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struct timecounter *tc;
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unsigned int use_arch_timer:1;
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unsigned int arch_timer_user_access:1;
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struct quadd_unw_methods um;
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unsigned int get_stack_offset:1;
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};
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struct task_struct;
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struct pt_regs;
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struct quadd_event_context {
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struct task_struct *task;
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struct pt_regs *regs;
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unsigned int user_mode:1;
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unsigned int is_sched:1;
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};
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#define QUADD_HRT_MIN_FREQ 100
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struct quadd_record_data;
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struct quadd_module_state;
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struct quadd_iovec;
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struct quadd_hrt_ctx *quadd_hrt_init(struct quadd_ctx *ctx);
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void quadd_hrt_deinit(void);
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int quadd_hrt_start(void);
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void quadd_hrt_stop(void);
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void
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quadd_put_sample_this_cpu(struct quadd_record_data *data,
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struct quadd_iovec *vec, int vec_count);
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void
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quadd_put_sample(struct quadd_record_data *data,
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struct quadd_iovec *vec, int vec_count);
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void quadd_hrt_get_state(struct quadd_module_state *state);
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u64 quadd_get_time(void);
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bool quadd_is_inherited(struct task_struct *task);
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#endif /* __KERNEL__ */
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#endif /* __QUADD_HRT_H */
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