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/*
* blktrace output analysis: generate a timeline & gather statistics
*
* Copyright (C) 2006 Alan D. Brunelle <Alan.Brunelle@hp.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#include "globals.h"
static void handle_g(struct io *g_iop)
{
struct io *q_iop;
iostat_getrq(g_iop);
q_iop = dip_find_sec(g_iop->dip, IOP_Q, g_iop->t.sector);
if (q_iop) {
q_iop->g_time = g_iop->t.time;
update_q2g(q_iop, tdelta(q_iop->t.time, g_iop->t.time));
if (q_iop->s_time != 0)
update_s2g(q_iop, tdelta(q_iop->s_time, g_iop->t.time));
}
}
static void handle_s(struct io *s_iop)
{
struct io *q_iop = dip_find_sec(s_iop->dip, IOP_Q, s_iop->t.sector);
if (q_iop)
q_iop->s_time = s_iop->t.time;
}
static void handle_i(struct io *i_iop)
{
struct io *q_iop = dip_find_sec(i_iop->dip, IOP_Q, i_iop->t.sector);
if (q_iop) {
q_iop->i_time = i_iop->t.time;
if (q_iop->g_time != (__u64)-1)
update_g2i(q_iop, tdelta(q_iop->g_time, i_iop->t.time));
}
}
static void handle_m(struct io *m_iop)
{
struct io *q_iop;
iostat_merge(m_iop);
q_iop = dip_find_sec(m_iop->dip, IOP_Q, m_iop->t.sector);
if (q_iop) {
q_iop->m_time = m_iop->t.time;
update_q2m(q_iop, tdelta(q_iop->t.time, m_iop->t.time));
}
if (m_iop->dip->n_act_q != 0)
m_iop->dip->n_act_q--;
}
void trace_sleeprq(struct io *s_iop)
{
if (s_iop->t.bytes == 0)
return;
if (io_setup(s_iop, IOP_S))
handle_s(s_iop);
io_release(s_iop);
}
void trace_getrq(struct io *g_iop)
{
if (g_iop->t.bytes == 0)
return;
if (io_setup(g_iop, IOP_G))
handle_g(g_iop);
io_release(g_iop);
}
void trace_insert(struct io *i_iop)
{
if (i_iop->t.bytes == 0)
return;
if (io_setup(i_iop, IOP_I))
handle_i(i_iop);
io_release(i_iop);
}
void trace_merge(struct io *m_iop)
{
if (m_iop->t.bytes == 0)
return;
if (io_setup(m_iop, IOP_M))
handle_m(m_iop);
io_release(m_iop);
}
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