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
|
/*
* QEMU System Emulator block accounting
*
* Copyright (c) 2011 Christoph Hellwig
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "block/accounting.h"
#include "block/block_int.h"
void
bdrv_acct_start(BlockDriverState *bs, BlockAcctCookie *cookie, int64_t bytes,
enum BlockAcctType type)
{
assert(type < BDRV_MAX_IOTYPE);
cookie->bytes = bytes;
cookie->start_time_ns = get_clock();
cookie->type = type;
}
void
bdrv_acct_done(BlockDriverState *bs, BlockAcctCookie *cookie)
{
assert(cookie->type < BDRV_MAX_IOTYPE);
bs->stats.nr_bytes[cookie->type] += cookie->bytes;
bs->stats.nr_ops[cookie->type]++;
bs->stats.total_time_ns[cookie->type] += get_clock() -
cookie->start_time_ns;
}
void bdrv_acct_highest_sector(BlockDriverState *bs, int64_t sector_num,
unsigned int nb_sectors)
{
if (bs->stats.wr_highest_sector < sector_num + nb_sectors - 1) {
bs->stats.wr_highest_sector = sector_num + nb_sectors - 1;
}
}
|
