1/*
2 * blktrace output analysis: generate a timeline & gather statistics
3 *
4 * Copyright (C) 2006 Alan D. Brunelle <Alan.Brunelle@hp.com>
5 *
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.
10 *
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.
15 *
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
19 *
20 */
21#include "globals.h"
22
23static void handle_queue(struct io *q_iop)
24{
25	seeki_add(q_iop->dip->q2q_handle, q_iop);
26	update_qregion(&all_regions, q_iop->t.time);
27	dip_update_q(q_iop->dip, q_iop);
28	pip_update_q(q_iop);
29	if (remapper_dev(q_iop->t.device))
30		update_lq(&last_q, &all_avgs.q2q_dm, q_iop->t.time);
31	else {
32		update_q_histo(q_iop->t.bytes);
33		update_lq(&last_q, &all_avgs.q2q, q_iop->t.time);
34	}
35
36	q_iop->i_time = q_iop->g_time = q_iop->i_time = q_iop->m_time =
37						q_iop->d_time = (__u64)-1;
38	q_iop->dip->n_qs++;
39
40	q_iop->dip->t_act_q += q_iop->dip->n_act_q;
41	q_iop->dip->n_act_q++;
42}
43
44void trace_queue(struct io *q_iop)
45{
46	if (q_iop->t.bytes == 0)
47		return;
48
49	if (io_setup(q_iop, IOP_Q))
50		handle_queue(q_iop);
51	else
52		io_release(q_iop);
53}
54