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// SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
/* Copyright 2013-2019 IBM Corp. */
#ifndef __TRACE_H
#define __TRACE_H
#include <ccan/short_types/short_types.h>
#include <stddef.h>
#include <lock.h>
#include <trace_types.h>
struct cpu_thread;
/* Here's one we prepared earlier. */
void init_boot_tracebuf(struct cpu_thread *boot_cpu);
struct trace_info {
/* Lock for writers. Exposed to kernel. */
struct lock lock;
/* Exposed to kernel. */
struct tracebuf tb;
};
#define TBUF_SZ ((1024 * 1024) - sizeof(struct trace_info) - sizeof(union trace))
/* Allocate trace buffers once we know memory topology */
void init_trace_buffers(void);
void trace_add_dt_props(void);
/* This will fill in timestamp and cpu; you must do type and len. */
void trace_add(union trace *trace, u8 type, u16 len);
/* Put trace node into dt. */
void trace_add_node(void);
#endif /* __TRACE_H */
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