1 /* 2 * blktrace output analysis: generate a timeline & gather statistics 3 * 4 * Copyright (C) 2006 Alan D. Brunelle <Alan.Brunelle (at) 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 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 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
