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
handle_queue(struct io * q_iop)23 static 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
trace_queue(struct io * q_iop)44 void 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