perf tools: Add trace event debugfs IO handler
Add util/trace-event-info.c which handles ftrace file IO from debugfs and provides general helpers to fetch/save ftrace events informations. This file is a rename of the trace-cmd.c file from the trace-cmd tools, written by Steven Rostedt and Josh Triplett, originated from the git tree: git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/trace-cmd.git This is a perf tools integration. For now, ftrace events information is saved in a separate file than the standard perf.data [fweisbec@gmail.com: various changes for perf tools integration] Signed-off-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: "Luis Claudio R. Goncalves" <lclaudio@uudg.org> Cc: Clark Williams <williams@redhat.com> Cc: Jon Masters <jonathan@jonmasters.org> Cc: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca> Cc: Christoph Hellwig <hch@infradead.org> Cc: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com> Cc: Zhaolei <zhaolei@cn.fujitsu.com> Cc: Li Zefan <lizf@cn.fujitsu.com> Cc: Lai Jiangshan <laijs@cn.fujitsu.com> Cc: Masami Hiramatsu <mhiramat@redhat.com> Cc: Tom Zanussi <tzanussi@gmail.com> Cc: "Frank Ch. Eigler" <fche@redhat.com> Cc: Roland McGrath <roland@redhat.com> Cc: Jason Baron <jbaron@redhat.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Jiaying Zhang <jiayingz@google.com> Cc: Anton Blanchard <anton@samba.org> LKML-Reference: <1250518688-7207-1-git-send-email-fweisbec@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Steven Rostedt
Ingo Molnar
parent
8f28827a16
commit
5205094364
|
|
@ -0,0 +1,491 @@
|
|||
/*
|
||||
* Copyright (C) 2008,2009, Steven Rostedt <srostedt@redhat.com>
|
||||
*
|
||||
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation; version 2 of the License (not later!)
|
||||
*
|
||||
* This program is distributed in the hope that 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.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with this program; if not, write to the Free Software
|
||||
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
||||
*
|
||||
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
||||
*/
|
||||
#define _GNU_SOURCE
|
||||
#include <dirent.h>
|
||||
#include <stdio.h>
|
||||
#include <stdlib.h>
|
||||
#include <string.h>
|
||||
#include <stdarg.h>
|
||||
#include <sys/types.h>
|
||||
#include <sys/stat.h>
|
||||
#include <sys/wait.h>
|
||||
#include <pthread.h>
|
||||
#include <fcntl.h>
|
||||
#include <unistd.h>
|
||||
#include <ctype.h>
|
||||
#include <errno.h>
|
||||
|
||||
#include "trace-event.h"
|
||||
|
||||
|
||||
#define VERSION "0.5"
|
||||
|
||||
#define _STR(x) #x
|
||||
#define STR(x) _STR(x)
|
||||
#define MAX_PATH 256
|
||||
|
||||
#define TRACE_CTRL "tracing_on"
|
||||
#define TRACE "trace"
|
||||
#define AVAILABLE "available_tracers"
|
||||
#define CURRENT "current_tracer"
|
||||
#define ITER_CTRL "trace_options"
|
||||
#define MAX_LATENCY "tracing_max_latency"
|
||||
|
||||
unsigned int page_size;
|
||||
|
||||
static const char *output_file = "trace.info";
|
||||
static int output_fd;
|
||||
|
||||
struct event_list {
|
||||
struct event_list *next;
|
||||
const char *event;
|
||||
};
|
||||
|
||||
struct events {
|
||||
struct events *sibling;
|
||||
struct events *children;
|
||||
struct events *next;
|
||||
char *name;
|
||||
};
|
||||
|
||||
|
||||
|
||||
static void die(const char *fmt, ...)
|
||||
{
|
||||
va_list ap;
|
||||
int ret = errno;
|
||||
|
||||
if (errno)
|
||||
perror("trace-cmd");
|
||||
else
|
||||
ret = -1;
|
||||
|
||||
va_start(ap, fmt);
|
||||
fprintf(stderr, " ");
|
||||
vfprintf(stderr, fmt, ap);
|
||||
va_end(ap);
|
||||
|
||||
fprintf(stderr, "\n");
|
||||
exit(ret);
|
||||
}
|
||||
|
||||
void *malloc_or_die(unsigned int size)
|
||||
{
|
||||
void *data;
|
||||
|
||||
data = malloc(size);
|
||||
if (!data)
|
||||
die("malloc");
|
||||
return data;
|
||||
}
|
||||
|
||||
static const char *find_debugfs(void)
|
||||
{
|
||||
static char debugfs[MAX_PATH+1];
|
||||
static int debugfs_found;
|
||||
char type[100];
|
||||
FILE *fp;
|
||||
|
||||
if (debugfs_found)
|
||||
return debugfs;
|
||||
|
||||
if ((fp = fopen("/proc/mounts","r")) == NULL)
|
||||
die("Can't open /proc/mounts for read");
|
||||
|
||||
while (fscanf(fp, "%*s %"
|
||||
STR(MAX_PATH)
|
||||
"s %99s %*s %*d %*d\n",
|
||||
debugfs, type) == 2) {
|
||||
if (strcmp(type, "debugfs") == 0)
|
||||
break;
|
||||
}
|
||||
fclose(fp);
|
||||
|
||||
if (strcmp(type, "debugfs") != 0)
|
||||
die("debugfs not mounted, please mount");
|
||||
|
||||
debugfs_found = 1;
|
||||
|
||||
return debugfs;
|
||||
}
|
||||
|
||||
/*
|
||||
* Finds the path to the debugfs/tracing
|
||||
* Allocates the string and stores it.
|
||||
*/
|
||||
static const char *find_tracing_dir(void)
|
||||
{
|
||||
static char *tracing;
|
||||
static int tracing_found;
|
||||
const char *debugfs;
|
||||
|
||||
if (tracing_found)
|
||||
return tracing;
|
||||
|
||||
debugfs = find_debugfs();
|
||||
|
||||
tracing = malloc_or_die(strlen(debugfs) + 9);
|
||||
|
||||
sprintf(tracing, "%s/tracing", debugfs);
|
||||
|
||||
tracing_found = 1;
|
||||
return tracing;
|
||||
}
|
||||
|
||||
static char *get_tracing_file(const char *name)
|
||||
{
|
||||
const char *tracing;
|
||||
char *file;
|
||||
|
||||
tracing = find_tracing_dir();
|
||||
if (!tracing)
|
||||
return NULL;
|
||||
|
||||
file = malloc_or_die(strlen(tracing) + strlen(name) + 2);
|
||||
|
||||
sprintf(file, "%s/%s", tracing, name);
|
||||
return file;
|
||||
}
|
||||
|
||||
static void put_tracing_file(char *file)
|
||||
{
|
||||
free(file);
|
||||
}
|
||||
|
||||
static ssize_t write_or_die(const void *buf, size_t len)
|
||||
{
|
||||
int ret;
|
||||
|
||||
ret = write(output_fd, buf, len);
|
||||
if (ret < 0)
|
||||
die("writing to '%s'", output_file);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
int bigendian(void)
|
||||
{
|
||||
unsigned char str[] = { 0x1, 0x2, 0x3, 0x4, 0x0, 0x0, 0x0, 0x0};
|
||||
unsigned int *ptr;
|
||||
|
||||
ptr = (unsigned int *)str;
|
||||
return *ptr == 0x01020304;
|
||||
}
|
||||
|
||||
static unsigned long long copy_file_fd(int fd)
|
||||
{
|
||||
unsigned long long size = 0;
|
||||
char buf[BUFSIZ];
|
||||
int r;
|
||||
|
||||
do {
|
||||
r = read(fd, buf, BUFSIZ);
|
||||
if (r > 0) {
|
||||
size += r;
|
||||
write_or_die(buf, r);
|
||||
}
|
||||
} while (r > 0);
|
||||
|
||||
return size;
|
||||
}
|
||||
|
||||
static unsigned long long copy_file(const char *file)
|
||||
{
|
||||
unsigned long long size = 0;
|
||||
int fd;
|
||||
|
||||
fd = open(file, O_RDONLY);
|
||||
if (fd < 0)
|
||||
die("Can't read '%s'", file);
|
||||
size = copy_file_fd(fd);
|
||||
close(fd);
|
||||
|
||||
return size;
|
||||
}
|
||||
|
||||
static unsigned long get_size_fd(int fd)
|
||||
{
|
||||
unsigned long long size = 0;
|
||||
char buf[BUFSIZ];
|
||||
int r;
|
||||
|
||||
do {
|
||||
r = read(fd, buf, BUFSIZ);
|
||||
if (r > 0)
|
||||
size += r;
|
||||
} while (r > 0);
|
||||
|
||||
lseek(fd, 0, SEEK_SET);
|
||||
|
||||
return size;
|
||||
}
|
||||
|
||||
static unsigned long get_size(const char *file)
|
||||
{
|
||||
unsigned long long size = 0;
|
||||
int fd;
|
||||
|
||||
fd = open(file, O_RDONLY);
|
||||
if (fd < 0)
|
||||
die("Can't read '%s'", file);
|
||||
size = get_size_fd(fd);
|
||||
close(fd);
|
||||
|
||||
return size;
|
||||
}
|
||||
|
||||
static void read_header_files(void)
|
||||
{
|
||||
unsigned long long size, check_size;
|
||||
char *path;
|
||||
int fd;
|
||||
|
||||
path = get_tracing_file("events/header_page");
|
||||
fd = open(path, O_RDONLY);
|
||||
if (fd < 0)
|
||||
die("can't read '%s'", path);
|
||||
|
||||
/* unfortunately, you can not stat debugfs files for size */
|
||||
size = get_size_fd(fd);
|
||||
|
||||
write_or_die("header_page", 12);
|
||||
write_or_die(&size, 8);
|
||||
check_size = copy_file_fd(fd);
|
||||
if (size != check_size)
|
||||
die("wrong size for '%s' size=%lld read=%lld",
|
||||
path, size, check_size);
|
||||
put_tracing_file(path);
|
||||
|
||||
path = get_tracing_file("events/header_event");
|
||||
fd = open(path, O_RDONLY);
|
||||
if (fd < 0)
|
||||
die("can't read '%s'", path);
|
||||
|
||||
size = get_size_fd(fd);
|
||||
|
||||
write_or_die("header_event", 13);
|
||||
write_or_die(&size, 8);
|
||||
check_size = copy_file_fd(fd);
|
||||
if (size != check_size)
|
||||
die("wrong size for '%s'", path);
|
||||
put_tracing_file(path);
|
||||
}
|
||||
|
||||
static void copy_event_system(const char *sys)
|
||||
{
|
||||
unsigned long long size, check_size;
|
||||
struct dirent *dent;
|
||||
struct stat st;
|
||||
char *format;
|
||||
DIR *dir;
|
||||
int count = 0;
|
||||
int ret;
|
||||
|
||||
dir = opendir(sys);
|
||||
if (!dir)
|
||||
die("can't read directory '%s'", sys);
|
||||
|
||||
while ((dent = readdir(dir))) {
|
||||
if (strcmp(dent->d_name, ".") == 0 ||
|
||||
strcmp(dent->d_name, "..") == 0)
|
||||
continue;
|
||||
format = malloc_or_die(strlen(sys) + strlen(dent->d_name) + 10);
|
||||
sprintf(format, "%s/%s/format", sys, dent->d_name);
|
||||
ret = stat(format, &st);
|
||||
free(format);
|
||||
if (ret < 0)
|
||||
continue;
|
||||
count++;
|
||||
}
|
||||
|
||||
write_or_die(&count, 4);
|
||||
|
||||
rewinddir(dir);
|
||||
while ((dent = readdir(dir))) {
|
||||
if (strcmp(dent->d_name, ".") == 0 ||
|
||||
strcmp(dent->d_name, "..") == 0)
|
||||
continue;
|
||||
format = malloc_or_die(strlen(sys) + strlen(dent->d_name) + 10);
|
||||
sprintf(format, "%s/%s/format", sys, dent->d_name);
|
||||
ret = stat(format, &st);
|
||||
|
||||
if (ret >= 0) {
|
||||
/* unfortunately, you can not stat debugfs files for size */
|
||||
size = get_size(format);
|
||||
write_or_die(&size, 8);
|
||||
check_size = copy_file(format);
|
||||
if (size != check_size)
|
||||
die("error in size of file '%s'", format);
|
||||
}
|
||||
|
||||
free(format);
|
||||
}
|
||||
}
|
||||
|
||||
static void read_ftrace_files(void)
|
||||
{
|
||||
char *path;
|
||||
|
||||
path = get_tracing_file("events/ftrace");
|
||||
|
||||
copy_event_system(path);
|
||||
|
||||
put_tracing_file(path);
|
||||
}
|
||||
|
||||
static void read_event_files(void)
|
||||
{
|
||||
struct dirent *dent;
|
||||
struct stat st;
|
||||
char *path;
|
||||
char *sys;
|
||||
DIR *dir;
|
||||
int count = 0;
|
||||
int ret;
|
||||
|
||||
path = get_tracing_file("events");
|
||||
|
||||
dir = opendir(path);
|
||||
if (!dir)
|
||||
die("can't read directory '%s'", path);
|
||||
|
||||
while ((dent = readdir(dir))) {
|
||||
if (strcmp(dent->d_name, ".") == 0 ||
|
||||
strcmp(dent->d_name, "..") == 0 ||
|
||||
strcmp(dent->d_name, "ftrace") == 0)
|
||||
continue;
|
||||
sys = malloc_or_die(strlen(path) + strlen(dent->d_name) + 2);
|
||||
sprintf(sys, "%s/%s", path, dent->d_name);
|
||||
ret = stat(sys, &st);
|
||||
free(sys);
|
||||
if (ret < 0)
|
||||
continue;
|
||||
if (S_ISDIR(st.st_mode))
|
||||
count++;
|
||||
}
|
||||
|
||||
write_or_die(&count, 4);
|
||||
|
||||
rewinddir(dir);
|
||||
while ((dent = readdir(dir))) {
|
||||
if (strcmp(dent->d_name, ".") == 0 ||
|
||||
strcmp(dent->d_name, "..") == 0 ||
|
||||
strcmp(dent->d_name, "ftrace") == 0)
|
||||
continue;
|
||||
sys = malloc_or_die(strlen(path) + strlen(dent->d_name) + 2);
|
||||
sprintf(sys, "%s/%s", path, dent->d_name);
|
||||
ret = stat(sys, &st);
|
||||
if (ret >= 0) {
|
||||
if (S_ISDIR(st.st_mode)) {
|
||||
write_or_die(dent->d_name, strlen(dent->d_name) + 1);
|
||||
copy_event_system(sys);
|
||||
}
|
||||
}
|
||||
free(sys);
|
||||
}
|
||||
|
||||
put_tracing_file(path);
|
||||
}
|
||||
|
||||
static void read_proc_kallsyms(void)
|
||||
{
|
||||
unsigned int size, check_size;
|
||||
const char *path = "/proc/kallsyms";
|
||||
struct stat st;
|
||||
int ret;
|
||||
|
||||
ret = stat(path, &st);
|
||||
if (ret < 0) {
|
||||
/* not found */
|
||||
size = 0;
|
||||
write_or_die(&size, 4);
|
||||
return;
|
||||
}
|
||||
size = get_size(path);
|
||||
write_or_die(&size, 4);
|
||||
check_size = copy_file(path);
|
||||
if (size != check_size)
|
||||
die("error in size of file '%s'", path);
|
||||
|
||||
}
|
||||
|
||||
static void read_ftrace_printk(void)
|
||||
{
|
||||
unsigned int size, check_size;
|
||||
const char *path;
|
||||
struct stat st;
|
||||
int ret;
|
||||
|
||||
path = get_tracing_file("printk_formats");
|
||||
ret = stat(path, &st);
|
||||
if (ret < 0) {
|
||||
/* not found */
|
||||
size = 0;
|
||||
write_or_die(&size, 4);
|
||||
return;
|
||||
}
|
||||
size = get_size(path);
|
||||
write_or_die(&size, 4);
|
||||
check_size = copy_file(path);
|
||||
if (size != check_size)
|
||||
die("error in size of file '%s'", path);
|
||||
|
||||
}
|
||||
|
||||
void read_tracing_data(void)
|
||||
{
|
||||
char buf[BUFSIZ];
|
||||
|
||||
output_fd = open(output_file, O_WRONLY | O_CREAT | O_TRUNC | O_LARGEFILE, 0644);
|
||||
if (output_fd < 0)
|
||||
die("creating file '%s'", output_file);
|
||||
|
||||
buf[0] = 23;
|
||||
buf[1] = 8;
|
||||
buf[2] = 68;
|
||||
memcpy(buf + 3, "tracing", 7);
|
||||
|
||||
write_or_die(buf, 10);
|
||||
|
||||
write_or_die(VERSION, strlen(VERSION) + 1);
|
||||
|
||||
/* save endian */
|
||||
if (bigendian())
|
||||
buf[0] = 1;
|
||||
else
|
||||
buf[0] = 0;
|
||||
|
||||
write_or_die(buf, 1);
|
||||
|
||||
/* save size of long */
|
||||
buf[0] = sizeof(long);
|
||||
write_or_die(buf, 1);
|
||||
|
||||
/* save page_size */
|
||||
page_size = getpagesize();
|
||||
write_or_die(&page_size, 4);
|
||||
|
||||
read_header_files();
|
||||
read_ftrace_files();
|
||||
read_event_files();
|
||||
read_proc_kallsyms();
|
||||
read_ftrace_printk();
|
||||
}
|
||||
|
|
@ -0,0 +1,238 @@
|
|||
#ifndef _PARSE_EVENTS_H
|
||||
#define _PARSE_EVENTS_H
|
||||
|
||||
|
||||
#define __unused __attribute__((unused))
|
||||
|
||||
|
||||
#ifndef PAGE_MASK
|
||||
#define PAGE_MASK (page_size - 1)
|
||||
#endif
|
||||
|
||||
enum {
|
||||
RINGBUF_TYPE_PADDING = 29,
|
||||
RINGBUF_TYPE_TIME_EXTEND = 30,
|
||||
RINGBUF_TYPE_TIME_STAMP = 31,
|
||||
};
|
||||
|
||||
#ifndef TS_SHIFT
|
||||
#define TS_SHIFT 27
|
||||
#endif
|
||||
|
||||
#define NSECS_PER_SEC 1000000000ULL
|
||||
#define NSECS_PER_USEC 1000ULL
|
||||
|
||||
enum format_flags {
|
||||
FIELD_IS_ARRAY = 1,
|
||||
FIELD_IS_POINTER = 2,
|
||||
};
|
||||
|
||||
struct format_field {
|
||||
struct format_field *next;
|
||||
char *type;
|
||||
char *name;
|
||||
int offset;
|
||||
int size;
|
||||
unsigned long flags;
|
||||
};
|
||||
|
||||
struct format {
|
||||
int nr_common;
|
||||
int nr_fields;
|
||||
struct format_field *common_fields;
|
||||
struct format_field *fields;
|
||||
};
|
||||
|
||||
struct print_arg_atom {
|
||||
char *atom;
|
||||
};
|
||||
|
||||
struct print_arg_string {
|
||||
char *string;
|
||||
};
|
||||
|
||||
struct print_arg_field {
|
||||
char *name;
|
||||
struct format_field *field;
|
||||
};
|
||||
|
||||
struct print_flag_sym {
|
||||
struct print_flag_sym *next;
|
||||
char *value;
|
||||
char *str;
|
||||
};
|
||||
|
||||
struct print_arg_typecast {
|
||||
char *type;
|
||||
struct print_arg *item;
|
||||
};
|
||||
|
||||
struct print_arg_flags {
|
||||
struct print_arg *field;
|
||||
char *delim;
|
||||
struct print_flag_sym *flags;
|
||||
};
|
||||
|
||||
struct print_arg_symbol {
|
||||
struct print_arg *field;
|
||||
struct print_flag_sym *symbols;
|
||||
};
|
||||
|
||||
struct print_arg;
|
||||
|
||||
struct print_arg_op {
|
||||
char *op;
|
||||
int prio;
|
||||
struct print_arg *left;
|
||||
struct print_arg *right;
|
||||
};
|
||||
|
||||
struct print_arg_func {
|
||||
char *name;
|
||||
struct print_arg *args;
|
||||
};
|
||||
|
||||
enum print_arg_type {
|
||||
PRINT_NULL,
|
||||
PRINT_ATOM,
|
||||
PRINT_FIELD,
|
||||
PRINT_FLAGS,
|
||||
PRINT_SYMBOL,
|
||||
PRINT_TYPE,
|
||||
PRINT_STRING,
|
||||
PRINT_OP,
|
||||
};
|
||||
|
||||
struct print_arg {
|
||||
struct print_arg *next;
|
||||
enum print_arg_type type;
|
||||
union {
|
||||
struct print_arg_atom atom;
|
||||
struct print_arg_field field;
|
||||
struct print_arg_typecast typecast;
|
||||
struct print_arg_flags flags;
|
||||
struct print_arg_symbol symbol;
|
||||
struct print_arg_func func;
|
||||
struct print_arg_string string;
|
||||
struct print_arg_op op;
|
||||
};
|
||||
};
|
||||
|
||||
struct print_fmt {
|
||||
char *format;
|
||||
struct print_arg *args;
|
||||
};
|
||||
|
||||
struct event {
|
||||
struct event *next;
|
||||
char *name;
|
||||
int id;
|
||||
int flags;
|
||||
struct format format;
|
||||
struct print_fmt print_fmt;
|
||||
};
|
||||
|
||||
enum {
|
||||
EVENT_FL_ISFTRACE = 1,
|
||||
EVENT_FL_ISPRINT = 2,
|
||||
EVENT_FL_ISBPRINT = 4,
|
||||
EVENT_FL_ISFUNC = 8,
|
||||
EVENT_FL_ISFUNCENT = 16,
|
||||
EVENT_FL_ISFUNCRET = 32,
|
||||
};
|
||||
|
||||
struct record {
|
||||
unsigned long long ts;
|
||||
int size;
|
||||
void *data;
|
||||
};
|
||||
|
||||
struct record *trace_peek_data(int cpu);
|
||||
struct record *trace_read_data(int cpu);
|
||||
|
||||
void parse_set_info(int nr_cpus, int long_sz);
|
||||
|
||||
void trace_report(void);
|
||||
|
||||
void *malloc_or_die(unsigned int size);
|
||||
|
||||
void parse_cmdlines(char *file, int size);
|
||||
void parse_proc_kallsyms(char *file, unsigned int size);
|
||||
void parse_ftrace_printk(char *file, unsigned int size);
|
||||
|
||||
void print_funcs(void);
|
||||
void print_printk(void);
|
||||
|
||||
int parse_ftrace_file(char *buf, unsigned long size);
|
||||
int parse_event_file(char *buf, unsigned long size, char *system);
|
||||
void print_event(int cpu, void *data, int size, unsigned long long nsecs,
|
||||
char *comm);
|
||||
|
||||
extern int file_bigendian;
|
||||
extern int host_bigendian;
|
||||
|
||||
int bigendian(void);
|
||||
|
||||
static inline unsigned short __data2host2(unsigned short data)
|
||||
{
|
||||
unsigned short swap;
|
||||
|
||||
if (host_bigendian == file_bigendian)
|
||||
return data;
|
||||
|
||||
swap = ((data & 0xffULL) << 8) |
|
||||
((data & (0xffULL << 8)) >> 8);
|
||||
|
||||
return swap;
|
||||
}
|
||||
|
||||
static inline unsigned int __data2host4(unsigned int data)
|
||||
{
|
||||
unsigned int swap;
|
||||
|
||||
if (host_bigendian == file_bigendian)
|
||||
return data;
|
||||
|
||||
swap = ((data & 0xffULL) << 24) |
|
||||
((data & (0xffULL << 8)) << 8) |
|
||||
((data & (0xffULL << 16)) >> 8) |
|
||||
((data & (0xffULL << 24)) >> 24);
|
||||
|
||||
return swap;
|
||||
}
|
||||
|
||||
static inline unsigned long long __data2host8(unsigned long long data)
|
||||
{
|
||||
unsigned long long swap;
|
||||
|
||||
if (host_bigendian == file_bigendian)
|
||||
return data;
|
||||
|
||||
swap = ((data & 0xffULL) << 56) |
|
||||
((data & (0xffULL << 8)) << 40) |
|
||||
((data & (0xffULL << 16)) << 24) |
|
||||
((data & (0xffULL << 24)) << 8) |
|
||||
((data & (0xffULL << 32)) >> 8) |
|
||||
((data & (0xffULL << 40)) >> 24) |
|
||||
((data & (0xffULL << 48)) >> 40) |
|
||||
((data & (0xffULL << 56)) >> 56);
|
||||
|
||||
return swap;
|
||||
}
|
||||
|
||||
#define data2host2(ptr) __data2host2(*(unsigned short *)ptr)
|
||||
#define data2host4(ptr) __data2host4(*(unsigned int *)ptr)
|
||||
#define data2host8(ptr) __data2host8(*(unsigned long long *)ptr)
|
||||
|
||||
extern int header_page_ts_offset;
|
||||
extern int header_page_ts_size;
|
||||
extern int header_page_size_offset;
|
||||
extern int header_page_size_size;
|
||||
extern int header_page_data_offset;
|
||||
extern int header_page_data_size;
|
||||
|
||||
int parse_header_page(char *buf, unsigned long size);
|
||||
|
||||
void read_tracing_data(void);
|
||||
|
||||
#endif /* _PARSE_EVENTS_H */
|
||||
Loading…
Reference in New Issue