mirror of
https://github.com/u-boot/u-boot.git
synced 2024-11-25 13:14:19 +08:00
2b7a3882e0
There is no good reason to limit the trace buffer to 2GiB on a 64bit system. Adjust the types of the relevant parameters. Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Reviewed-by: Simon Glass <sjg@chromium.org>
105 lines
2.9 KiB
C
105 lines
2.9 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
|
|
/*
|
|
* Copyright (c) 2012 The Chromium OS Authors.
|
|
*/
|
|
|
|
#ifndef __TRACE_H
|
|
#define __TRACE_H
|
|
|
|
enum {
|
|
/*
|
|
* This affects the granularity of our trace. We can bin function
|
|
* entry points into groups on the basis that functions typically
|
|
* have a minimum size, so entry points can't appear any closer
|
|
* than this to each other.
|
|
*
|
|
* The value here assumes a minimum instruction size of 4 bytes,
|
|
* or that instructions are 2 bytes but there are at least 2 of
|
|
* them in every function.
|
|
*
|
|
* Increasing this value reduces the number of functions we can
|
|
* resolve, but reduces the size of the uintptr_t array used for
|
|
* our function list, which is the length of the code divided by
|
|
* this value.
|
|
*/
|
|
FUNC_SITE_SIZE = 4, /* distance between function sites */
|
|
};
|
|
|
|
enum trace_chunk_type {
|
|
TRACE_CHUNK_FUNCS,
|
|
TRACE_CHUNK_CALLS,
|
|
};
|
|
|
|
/* A trace record for a function, as written to the profile output file */
|
|
struct trace_output_func {
|
|
uint32_t offset; /* Function offset into code */
|
|
uint32_t call_count; /* Number of times called */
|
|
};
|
|
|
|
/* A header at the start of the trace output buffer */
|
|
struct trace_output_hdr {
|
|
enum trace_chunk_type type; /* Record type */
|
|
size_t rec_count; /* Number of records */
|
|
};
|
|
|
|
/* Print statistics about traced function calls */
|
|
void trace_print_stats(void);
|
|
|
|
/**
|
|
* Dump a list of functions and call counts into a buffer
|
|
*
|
|
* Each record in the buffer is a struct trace_func_stats. The 'needed'
|
|
* parameter returns the number of bytes needed to complete the operation,
|
|
* which may be more than buff_size if your buffer is too small.
|
|
*
|
|
* @param buff Buffer in which to place data, or NULL to count size
|
|
* @param buff_size Size of buffer
|
|
* @param needed Returns number of bytes used / needed
|
|
* @return 0 if ok, -1 on error (buffer exhausted)
|
|
*/
|
|
int trace_list_functions(void *buff, size_t buff_size, size_t *needed);
|
|
|
|
/* Flags for ftrace_record */
|
|
enum ftrace_flags {
|
|
FUNCF_EXIT = 0UL << 30,
|
|
FUNCF_ENTRY = 1UL << 30,
|
|
FUNCF_TEXTBASE = 2UL << 30,
|
|
|
|
FUNCF_TIMESTAMP_MASK = 0x3fffffff,
|
|
};
|
|
|
|
#define TRACE_CALL_TYPE(call) ((call)->flags & 0xc0000000UL)
|
|
|
|
/* Information about a single function entry/exit */
|
|
struct trace_call {
|
|
uint32_t func; /* Function offset */
|
|
uint32_t caller; /* Caller function offset */
|
|
uint32_t flags; /* Flags and timestamp */
|
|
};
|
|
|
|
int trace_list_calls(void *buff, size_t buff_size, size_t *needed);
|
|
|
|
/**
|
|
* Turn function tracing on and off
|
|
*
|
|
* Don't enable trace if it has not been initialised.
|
|
*
|
|
* @param enabled 1 to enable trace, 0 to disable
|
|
*/
|
|
void trace_set_enabled(int enabled);
|
|
|
|
int trace_early_init(void);
|
|
|
|
/**
|
|
* Init the trace system
|
|
*
|
|
* This should be called after relocation with a suitably large buffer
|
|
* (typically as large as the U-Boot text area)
|
|
*
|
|
* @param buff Pointer to trace buffer
|
|
* @param buff_size Size of trace buffer
|
|
*/
|
|
int trace_init(void *buff, size_t buff_size);
|
|
|
|
#endif
|