28298fd3d9
The middle term goal is to move the BlockAcctStats structure in the device models. (Capturing I/O accounting statistics in the device models is good for billing) This patch make a small step in this direction by removing a reference to BDRV. CC: Kevin Wolf <kwolf@redhat.com> CC: Stefan Hajnoczi <stefanha@redhat.com> CC: Keith Busch <keith.busch@intel.com> CC: Anthony Liguori <aliguori@amazon.com> CC: "Michael S. Tsirkin" <mst@redhat.com> CC: Paolo Bonzini <pbonzini@redhat.com> CC: John Snow <jsnow@redhat.com> CC: Richard Henderson <rth@twiddle.net> CC: Markus Armbruster <armbru@redhat.com> CC: Alexander Graf <agraf@suse.de>i Signed-off-by: Benoît Canet <benoit.canet@nodalink.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
58 lines
2.0 KiB
C
58 lines
2.0 KiB
C
/*
|
|
* 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 < BLOCK_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 < BLOCK_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;
|
|
}
|
|
}
|