/*
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* blktrace output analysis: generate a timeline & gather statistics
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*
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* Copyright (C) 2006 Alan D. Brunelle <Alan.Brunelle@hp.com>
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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; either version 2 of the License, or
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* (at your option) any later version.
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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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#include "globals.h"
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static void handle_issue(struct io *d_iop)
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{
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LIST_HEAD(head);
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struct list_head *p, *q;
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if (d_iop->dip->n_act_q != 0)
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d_iop->dip->n_act_q--;
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seeki_add(d_iop->dip->seek_handle, d_iop);
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bno_dump_add(d_iop->dip->bno_dump_handle, d_iop);
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iostat_issue(d_iop);
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d_iop->dip->n_ds++;
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if (!remapper_dev(d_iop->t.device))
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update_d_histo(d_iop->t.bytes);
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aqd_issue(d_iop->dip->aqd_handle, BIT_TIME(d_iop->t.time));
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dip_foreach_list(d_iop, IOP_Q, &head);
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list_for_each_safe(p, q, &head) {
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struct io *q_iop = list_entry(p, struct io, f_head);
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if (q_iop->i_time != (__u64)-1)
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update_i2d(q_iop, tdelta(q_iop->i_time, d_iop->t.time));
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else if (q_iop->m_time != (__u64)-1)
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update_m2d(q_iop, tdelta(q_iop->m_time, d_iop->t.time));
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d_iop->bytes_left -= q_iop->t.bytes;
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list_del(&q_iop->f_head);
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q_iop->d_time = d_iop->t.time;
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q_iop->d_sec = d_iop->t.sector;
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q_iop->d_nsec = t_sec(&d_iop->t);
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if (output_all_data)
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q2d_histo_add(q_iop->dip->q2d_priv,
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d_iop->t.time - q_iop->t.time);
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latency_q2d(q_iop->dip, d_iop->t.time,
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d_iop->t.time - q_iop->t.time);
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}
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}
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void trace_issue(struct io *d_iop)
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{
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if (d_iop->t.bytes == 0)
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return;
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if (io_setup(d_iop, IOP_D))
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handle_issue(d_iop);
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io_release(d_iop);
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}
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