/*
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* Copyright (c) 2018 Google, Inc.
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*
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* SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#ifndef _LTP_TRACE_PARSE_H_
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#define _LTP_TRACE_PARSE_H_
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/*
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* It is necessary to define TRACE_EVENTS to communicate the events to trace. */
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#define TRACING_DIR "/sys/kernel/debug/tracing/"
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enum {
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TRACE_RECORD_OTHER = 0,
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TRACE_RECORD_SCHED_PROCESS_EXIT,
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TRACE_RECORD_SCHED_PROCESS_FORK,
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TRACE_RECORD_SCHED_SWITCH,
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TRACE_RECORD_SCHED_WAKEUP,
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TRACE_RECORD_SUGOV_UTIL_UPDATE,
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TRACE_RECORD_SUGOV_NEXT_FREQ,
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TRACE_RECORD_CPU_FREQUENCY,
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TRACE_RECORD_TRACING_MARK_WRITE,
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};
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#define IRQ_CONTEXT_NORMAL '.'
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#define IRQ_CONTEXT_SOFT 's'
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#define IRQ_CONTEXT_HARD 'h'
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#define IRQ_CONTEXT_HARD_IN_SOFT 'H'
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#define IRQ_CONTEXT_NMI 'z'
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#define IRQ_CONTEXT_NMI_IN_HARD 'Z'
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struct timestamp {
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unsigned int sec;
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unsigned int usec;
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};
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struct trace_cpu_frequency {
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unsigned int state;
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unsigned short cpu;
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};
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struct trace_sched_switch {
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char prev_comm[17];
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unsigned short prev_pid;
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unsigned short prev_prio;
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char prev_state;
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char next_comm[17];
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unsigned short next_pid;
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unsigned short next_prio;
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};
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struct trace_sched_wakeup {
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char comm[17];
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unsigned short pid;
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unsigned short prio;
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unsigned short cpu;
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};
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struct trace_sugov_util_update {
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int cpu;
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int util;
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int avg_cap;
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int max_cap;
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};
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struct trace_sugov_next_freq {
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int cpu;
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int util;
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int max;
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int freq;
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};
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struct trace_record {
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char task[17];
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unsigned short pid;
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unsigned short cpu;
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#define TRACE_RECORD_IRQS_OFF 0x1
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#define TRACE_RECORD_TIF_NEED_RESCHED 0x2
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#define TRACE_RECORD_PREEMPT_NEED_RESCHED 0x4
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unsigned short flags;
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unsigned char irq_context;
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unsigned short preempt_depth;
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struct timestamp ts;
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unsigned int event_type;
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void *event_data;
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};
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extern int num_trace_records;
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extern struct trace_record *trace;
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void trace_cleanup(void);
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void print_trace_record(struct trace_record *tr);
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struct trace_record *load_trace(void);
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#define LOAD_TRACE() \
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if (!load_trace()) \
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tst_brk(TBROK, "Failed to load trace.\n");
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#endif /* _LTP_TRACE_PARSE_H_ */
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