2 * blktrace output analysis: generate a timeline & gather statistics
4 * Copyright (C) 2006 Alan D. Brunelle <Alan.Brunelle@hp.com>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
25 #define INLINE_DECLARE
28 int data_is_native = -1;
30 struct blk_io_trace *convert_to_cpu(struct blk_io_trace *t)
32 if (data_is_native == -1)
33 check_data_endianness(t->magic);
37 ASSERT(CHECK_MAGIC(t));
38 ASSERT((t->magic & 0xff) == SUPPORTED_VERSION);
43 int in_devices(struct blk_io_trace *t)
46 unsigned int mjr, mnr;
49 if (p == NULL) return 1; /* Allow anything */
52 i = sscanf(p, "%u,%u;", &mjr, &mnr);
55 if ((mjr == MAJOR(t->device) && (mnr == MINOR(t->device))))
67 unsigned int do_read(int ifd, void *buf, int len)
71 n = read(ifd, buf, len);
76 else if (0 < n && n < len) {
77 fprintf(stderr,"Short read on %s\n", input_name);
80 else if (n == 0) /* EOF */