1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
|
/*
* 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 __run_issue(struct io *im_iop, struct io *d_iop, struct io *c_iop)
{
update_i2d(im_iop, tdelta(im_iop, d_iop));
run_im(im_iop, d_iop, c_iop);
dump_iop(d_iop, 0);
}
static void __run_unissue(struct io *im_iop, struct io *d_iop,
struct io *c_iop)
{
unupdate_i2d(im_iop, tdelta(im_iop, d_iop));
run_unim(im_iop, d_iop, c_iop);
}
void run_issue(struct io *d_iop, __attribute__((__unused__))struct io *u_iop,
struct io *c_iop)
{
bilink_for_each_down(__run_issue, d_iop, c_iop, 1);
add_rmhd(d_iop);
}
void run_unissue(struct io *d_iop,
__attribute__((__unused__))struct io *u_iop,
struct io *c_iop)
{
bilink_for_each_down(__run_unissue, d_iop, c_iop, 1);
add_rmhd(d_iop);
}
int ready_issue(struct io *d_iop, struct io *c_iop)
{
if (d_iop->bytes_left > 0) {
LIST_HEAD(head);
struct io *im_iop;
struct list_head *p, *q;
dip_foreach_list(d_iop, IOP_I, &head);
dip_foreach_list(d_iop, IOP_M, &head);
list_for_each_safe(p, q, &head) {
im_iop = list_entry(p, struct io, f_head);
LIST_DEL(&im_iop->f_head);
ASSERT(d_iop->bytes_left >= im_iop->t.bytes);
if (ready_im(im_iop, c_iop)) {
bilink(im_iop, d_iop);
dip_rem(im_iop);
d_iop->bytes_left -= im_iop->t.bytes;
}
}
}
return d_iop->bytes_left == 0;
}
void trace_issue(struct io *d_iop)
{
if (io_setup(d_iop, IOP_D)) {
seeki_add(d_iop->dip->seek_handle, d_iop);
bno_dump_add(d_iop->dip->bno_dump_handle, d_iop);
iostat_issue(d_iop);
d_iop->dip->n_ds++;
if (!remapper_dev(d_iop->t.device))
update_d_histo(d_iop->t.bytes);
}
else
io_release(d_iop);
}
|
