2009-08-17 16:18:06 +02:00
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/*
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* Copyright (C) 2009, Steven Rostedt <srostedt@redhat.com>
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*
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* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License (not later!)
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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*/
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2010-02-04 09:46:42 +01:00
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#define _FILE_OFFSET_BITS 64
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2009-08-17 16:18:06 +02:00
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#include <dirent.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <getopt.h>
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#include <stdarg.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <sys/wait.h>
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#include <sys/mman.h>
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#include <pthread.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <ctype.h>
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#include <errno.h>
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2009-08-28 03:09:58 +02:00
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#include "../perf.h"
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2009-08-17 16:18:06 +02:00
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#include "util.h"
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#include "trace-event.h"
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static int input_fd;
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static int read_page;
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int file_bigendian;
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int host_bigendian;
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static int long_size;
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static unsigned long page_size;
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2010-04-02 06:59:21 +02:00
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static ssize_t calc_data_size;
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2010-05-01 08:41:20 +02:00
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static bool repipe;
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2010-04-02 06:59:21 +02:00
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static int do_read(int fd, void *buf, int size)
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{
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int rsize = size;
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while (size) {
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int ret = read(fd, buf, size);
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if (ret <= 0)
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return -1;
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2010-05-01 08:41:20 +02:00
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if (repipe) {
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int retw = write(STDOUT_FILENO, buf, ret);
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if (retw <= 0 || retw != ret)
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die("repiping input file");
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}
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2010-04-02 06:59:21 +02:00
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size -= ret;
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buf += ret;
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}
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return rsize;
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}
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2009-08-17 16:18:06 +02:00
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static int read_or_die(void *data, int size)
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{
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int r;
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2010-04-02 06:59:21 +02:00
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r = do_read(input_fd, data, size);
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if (r <= 0)
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2009-08-17 16:18:06 +02:00
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die("reading input file (size expected=%d received=%d)",
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size, r);
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2010-04-02 06:59:21 +02:00
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if (calc_data_size)
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calc_data_size += r;
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2009-08-17 16:18:06 +02:00
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return r;
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}
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2010-05-05 06:02:10 +02:00
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/* If it fails, the next read will report it */
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static void skip(int size)
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{
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char buf[BUFSIZ];
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int r;
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while (size) {
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r = size > BUFSIZ ? BUFSIZ : size;
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read_or_die(buf, r);
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size -= r;
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};
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}
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2009-08-17 16:18:06 +02:00
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static unsigned int read4(void)
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{
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unsigned int data;
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read_or_die(&data, 4);
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return __data2host4(data);
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}
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static unsigned long long read8(void)
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{
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unsigned long long data;
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read_or_die(&data, 8);
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return __data2host8(data);
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}
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static char *read_string(void)
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{
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char buf[BUFSIZ];
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char *str = NULL;
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int size = 0;
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2010-02-04 09:46:42 +01:00
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off_t r;
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2010-04-02 06:59:21 +02:00
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char c;
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2009-08-17 16:18:06 +02:00
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for (;;) {
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2010-04-02 06:59:21 +02:00
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r = read(input_fd, &c, 1);
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2009-08-17 16:18:06 +02:00
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if (r < 0)
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die("reading input file");
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if (!r)
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die("no data");
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2010-05-01 08:41:20 +02:00
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if (repipe) {
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int retw = write(STDOUT_FILENO, &c, 1);
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if (retw <= 0 || retw != r)
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die("repiping input file string");
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}
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2010-04-02 06:59:21 +02:00
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buf[size++] = c;
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2009-08-17 16:18:06 +02:00
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2010-04-02 06:59:21 +02:00
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if (!c)
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break;
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2009-08-17 16:18:06 +02:00
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}
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2010-04-02 06:59:21 +02:00
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if (calc_data_size)
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calc_data_size += size;
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str = malloc_or_die(size);
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memcpy(str, buf, size);
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2009-08-17 16:18:06 +02:00
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return str;
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}
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static void read_proc_kallsyms(void)
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{
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unsigned int size;
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char *buf;
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size = read4();
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if (!size)
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return;
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2009-12-06 12:10:49 +01:00
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buf = malloc_or_die(size + 1);
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2009-08-17 16:18:06 +02:00
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read_or_die(buf, size);
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2009-12-06 12:10:49 +01:00
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buf[size] = '\0';
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2009-08-17 16:18:06 +02:00
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parse_proc_kallsyms(buf, size);
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free(buf);
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}
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static void read_ftrace_printk(void)
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{
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unsigned int size;
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char *buf;
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size = read4();
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if (!size)
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return;
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buf = malloc_or_die(size);
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read_or_die(buf, size);
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parse_ftrace_printk(buf, size);
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free(buf);
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}
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static void read_header_files(void)
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{
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unsigned long long size;
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char *header_event;
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char buf[BUFSIZ];
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read_or_die(buf, 12);
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if (memcmp(buf, "header_page", 12) != 0)
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die("did not read header page");
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size = read8();
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2010-05-01 03:08:46 +02:00
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skip(size);
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2009-08-17 16:18:06 +02:00
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/*
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* The size field in the page is of type long,
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* use that instead, since it represents the kernel.
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*/
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long_size = header_page_size_size;
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read_or_die(buf, 13);
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if (memcmp(buf, "header_event", 13) != 0)
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die("did not read header event");
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size = read8();
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header_event = malloc_or_die(size);
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read_or_die(header_event, size);
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free(header_event);
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}
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static void read_ftrace_file(unsigned long long size)
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{
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char *buf;
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buf = malloc_or_die(size);
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read_or_die(buf, size);
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parse_ftrace_file(buf, size);
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free(buf);
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}
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static void read_event_file(char *sys, unsigned long long size)
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{
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char *buf;
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buf = malloc_or_die(size);
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read_or_die(buf, size);
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parse_event_file(buf, size, sys);
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free(buf);
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}
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static void read_ftrace_files(void)
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{
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unsigned long long size;
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int count;
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int i;
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count = read4();
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for (i = 0; i < count; i++) {
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size = read8();
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read_ftrace_file(size);
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}
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}
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static void read_event_files(void)
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{
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unsigned long long size;
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char *sys;
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int systems;
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int count;
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int i,x;
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systems = read4();
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for (i = 0; i < systems; i++) {
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sys = read_string();
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count = read4();
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for (x=0; x < count; x++) {
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size = read8();
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read_event_file(sys, size);
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}
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}
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}
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struct cpu_data {
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unsigned long long offset;
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unsigned long long size;
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unsigned long long timestamp;
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struct record *next;
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char *page;
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int cpu;
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int index;
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int page_size;
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};
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static struct cpu_data *cpu_data;
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static void update_cpu_data_index(int cpu)
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{
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cpu_data[cpu].offset += page_size;
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cpu_data[cpu].size -= page_size;
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cpu_data[cpu].index = 0;
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}
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static void get_next_page(int cpu)
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{
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2010-02-04 09:46:42 +01:00
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off_t save_seek;
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off_t ret;
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2009-08-17 16:18:06 +02:00
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if (!cpu_data[cpu].page)
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return;
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if (read_page) {
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if (cpu_data[cpu].size <= page_size) {
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free(cpu_data[cpu].page);
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cpu_data[cpu].page = NULL;
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return;
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}
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update_cpu_data_index(cpu);
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/* other parts of the code may expect the pointer to not move */
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2010-02-04 09:46:42 +01:00
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save_seek = lseek(input_fd, 0, SEEK_CUR);
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2009-08-17 16:18:06 +02:00
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2010-02-04 09:46:42 +01:00
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ret = lseek(input_fd, cpu_data[cpu].offset, SEEK_SET);
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if (ret == (off_t)-1)
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2009-08-17 16:18:06 +02:00
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die("failed to lseek");
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ret = read(input_fd, cpu_data[cpu].page, page_size);
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if (ret < 0)
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die("failed to read page");
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/* reset the file pointer back */
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2010-02-04 09:46:42 +01:00
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lseek(input_fd, save_seek, SEEK_SET);
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2009-08-17 16:18:06 +02:00
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return;
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}
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munmap(cpu_data[cpu].page, page_size);
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cpu_data[cpu].page = NULL;
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if (cpu_data[cpu].size <= page_size)
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return;
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update_cpu_data_index(cpu);
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cpu_data[cpu].page = mmap(NULL, page_size, PROT_READ, MAP_PRIVATE,
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input_fd, cpu_data[cpu].offset);
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if (cpu_data[cpu].page == MAP_FAILED)
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die("failed to mmap cpu %d at offset 0x%llx",
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cpu, cpu_data[cpu].offset);
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}
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static unsigned int type_len4host(unsigned int type_len_ts)
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{
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if (file_bigendian)
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return (type_len_ts >> 27) & ((1 << 5) - 1);
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else
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return type_len_ts & ((1 << 5) - 1);
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}
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static unsigned int ts4host(unsigned int type_len_ts)
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{
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if (file_bigendian)
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return type_len_ts & ((1 << 27) - 1);
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else
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return type_len_ts >> 5;
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}
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static int calc_index(void *ptr, int cpu)
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{
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return (unsigned long)ptr - (unsigned long)cpu_data[cpu].page;
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}
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struct record *trace_peek_data(int cpu)
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{
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struct record *data;
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void *page = cpu_data[cpu].page;
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int idx = cpu_data[cpu].index;
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void *ptr = page + idx;
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unsigned long long extend;
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unsigned int type_len_ts;
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unsigned int type_len;
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unsigned int delta;
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unsigned int length = 0;
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if (cpu_data[cpu].next)
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return cpu_data[cpu].next;
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if (!page)
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return NULL;
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if (!idx) {
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/* FIXME: handle header page */
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|
|
if (header_page_ts_size != 8)
|
|
|
|
die("expected a long long type for timestamp");
|
|
|
|
cpu_data[cpu].timestamp = data2host8(ptr);
|
|
|
|
ptr += 8;
|
|
|
|
switch (header_page_size_size) {
|
|
|
|
case 4:
|
|
|
|
cpu_data[cpu].page_size = data2host4(ptr);
|
|
|
|
ptr += 4;
|
|
|
|
break;
|
|
|
|
case 8:
|
|
|
|
cpu_data[cpu].page_size = data2host8(ptr);
|
|
|
|
ptr += 8;
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
die("bad long size");
|
|
|
|
}
|
|
|
|
ptr = cpu_data[cpu].page + header_page_data_offset;
|
|
|
|
}
|
|
|
|
|
|
|
|
read_again:
|
|
|
|
idx = calc_index(ptr, cpu);
|
|
|
|
|
|
|
|
if (idx >= cpu_data[cpu].page_size) {
|
|
|
|
get_next_page(cpu);
|
|
|
|
return trace_peek_data(cpu);
|
|
|
|
}
|
|
|
|
|
|
|
|
type_len_ts = data2host4(ptr);
|
|
|
|
ptr += 4;
|
|
|
|
|
|
|
|
type_len = type_len4host(type_len_ts);
|
|
|
|
delta = ts4host(type_len_ts);
|
|
|
|
|
|
|
|
switch (type_len) {
|
|
|
|
case RINGBUF_TYPE_PADDING:
|
|
|
|
if (!delta)
|
|
|
|
die("error, hit unexpected end of page");
|
|
|
|
length = data2host4(ptr);
|
|
|
|
ptr += 4;
|
|
|
|
length *= 4;
|
|
|
|
ptr += length;
|
|
|
|
goto read_again;
|
|
|
|
|
|
|
|
case RINGBUF_TYPE_TIME_EXTEND:
|
|
|
|
extend = data2host4(ptr);
|
|
|
|
ptr += 4;
|
|
|
|
extend <<= TS_SHIFT;
|
|
|
|
extend += delta;
|
|
|
|
cpu_data[cpu].timestamp += extend;
|
|
|
|
goto read_again;
|
|
|
|
|
|
|
|
case RINGBUF_TYPE_TIME_STAMP:
|
|
|
|
ptr += 12;
|
|
|
|
break;
|
|
|
|
case 0:
|
|
|
|
length = data2host4(ptr);
|
|
|
|
ptr += 4;
|
|
|
|
die("here! length=%d", length);
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
length = type_len * 4;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
cpu_data[cpu].timestamp += delta;
|
|
|
|
|
|
|
|
data = malloc_or_die(sizeof(*data));
|
|
|
|
memset(data, 0, sizeof(*data));
|
|
|
|
|
|
|
|
data->ts = cpu_data[cpu].timestamp;
|
|
|
|
data->size = length;
|
|
|
|
data->data = ptr;
|
|
|
|
ptr += length;
|
|
|
|
|
|
|
|
cpu_data[cpu].index = calc_index(ptr, cpu);
|
|
|
|
cpu_data[cpu].next = data;
|
|
|
|
|
|
|
|
return data;
|
|
|
|
}
|
|
|
|
|
|
|
|
struct record *trace_read_data(int cpu)
|
|
|
|
{
|
|
|
|
struct record *data;
|
|
|
|
|
|
|
|
data = trace_peek_data(cpu);
|
|
|
|
cpu_data[cpu].next = NULL;
|
|
|
|
|
|
|
|
return data;
|
|
|
|
}
|
|
|
|
|
2010-05-01 08:41:20 +02:00
|
|
|
ssize_t trace_report(int fd, bool __repipe)
|
2009-08-17 16:18:06 +02:00
|
|
|
{
|
|
|
|
char buf[BUFSIZ];
|
|
|
|
char test[] = { 23, 8, 68 };
|
|
|
|
char *version;
|
2009-09-12 10:08:34 +02:00
|
|
|
int show_version = 0;
|
2009-08-17 16:18:06 +02:00
|
|
|
int show_funcs = 0;
|
|
|
|
int show_printk = 0;
|
2010-04-02 06:59:21 +02:00
|
|
|
ssize_t size;
|
|
|
|
|
|
|
|
calc_data_size = 1;
|
2010-05-01 08:41:20 +02:00
|
|
|
repipe = __repipe;
|
2009-08-17 16:18:06 +02:00
|
|
|
|
2009-10-06 23:36:47 +02:00
|
|
|
input_fd = fd;
|
2009-08-17 16:18:06 +02:00
|
|
|
|
|
|
|
read_or_die(buf, 3);
|
|
|
|
if (memcmp(buf, test, 3) != 0)
|
2009-11-21 17:31:26 +01:00
|
|
|
die("no trace data in the file");
|
2009-08-17 16:18:06 +02:00
|
|
|
|
|
|
|
read_or_die(buf, 7);
|
|
|
|
if (memcmp(buf, "tracing", 7) != 0)
|
2009-11-21 17:31:26 +01:00
|
|
|
die("not a trace file (missing 'tracing' tag)");
|
2009-08-17 16:18:06 +02:00
|
|
|
|
|
|
|
version = read_string();
|
2009-09-12 10:08:34 +02:00
|
|
|
if (show_version)
|
|
|
|
printf("version = %s\n", version);
|
2009-08-17 16:18:06 +02:00
|
|
|
free(version);
|
|
|
|
|
|
|
|
read_or_die(buf, 1);
|
|
|
|
file_bigendian = buf[0];
|
|
|
|
host_bigendian = bigendian();
|
|
|
|
|
|
|
|
read_or_die(buf, 1);
|
|
|
|
long_size = buf[0];
|
|
|
|
|
|
|
|
page_size = read4();
|
|
|
|
|
|
|
|
read_header_files();
|
|
|
|
|
|
|
|
read_ftrace_files();
|
|
|
|
read_event_files();
|
|
|
|
read_proc_kallsyms();
|
|
|
|
read_ftrace_printk();
|
|
|
|
|
2010-04-02 06:59:21 +02:00
|
|
|
size = calc_data_size - 1;
|
|
|
|
calc_data_size = 0;
|
2010-05-01 08:41:20 +02:00
|
|
|
repipe = false;
|
2010-04-02 06:59:21 +02:00
|
|
|
|
2009-08-17 16:18:06 +02:00
|
|
|
if (show_funcs) {
|
|
|
|
print_funcs();
|
2010-04-02 06:59:21 +02:00
|
|
|
return size;
|
2009-08-17 16:18:06 +02:00
|
|
|
}
|
|
|
|
if (show_printk) {
|
|
|
|
print_printk();
|
2010-04-02 06:59:21 +02:00
|
|
|
return size;
|
2009-08-17 16:18:06 +02:00
|
|
|
}
|
|
|
|
|
2010-04-02 06:59:21 +02:00
|
|
|
return size;
|
2009-08-17 16:18:06 +02:00
|
|
|
}
|