This patch adds two options, "stats-account-invalid" and "stats-account-failed", that can be used to decide whether invalid and failed I/O operations must be used when collecting statistics for latency and last access time. Signed-off-by: Alberto Garcia <berto@igalia.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Message-id: ebc7e5966511a342cad428a392c5f5ad56b15213.1446044837.git.berto@igalia.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
69 lines
2.5 KiB
C
69 lines
2.5 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.
|
|
*/
|
|
#ifndef BLOCK_ACCOUNTING_H
|
|
#define BLOCK_ACCOUNTING_H
|
|
|
|
#include <stdint.h>
|
|
#include <stdbool.h>
|
|
|
|
#include "qemu/typedefs.h"
|
|
|
|
enum BlockAcctType {
|
|
BLOCK_ACCT_READ,
|
|
BLOCK_ACCT_WRITE,
|
|
BLOCK_ACCT_FLUSH,
|
|
BLOCK_MAX_IOTYPE,
|
|
};
|
|
|
|
typedef struct BlockAcctStats {
|
|
uint64_t nr_bytes[BLOCK_MAX_IOTYPE];
|
|
uint64_t nr_ops[BLOCK_MAX_IOTYPE];
|
|
uint64_t invalid_ops[BLOCK_MAX_IOTYPE];
|
|
uint64_t failed_ops[BLOCK_MAX_IOTYPE];
|
|
uint64_t total_time_ns[BLOCK_MAX_IOTYPE];
|
|
uint64_t merged[BLOCK_MAX_IOTYPE];
|
|
int64_t last_access_time_ns;
|
|
bool account_invalid;
|
|
bool account_failed;
|
|
} BlockAcctStats;
|
|
|
|
typedef struct BlockAcctCookie {
|
|
int64_t bytes;
|
|
int64_t start_time_ns;
|
|
enum BlockAcctType type;
|
|
} BlockAcctCookie;
|
|
|
|
void block_acct_init(BlockAcctStats *stats, bool account_invalid,
|
|
bool account_failed);
|
|
void block_acct_start(BlockAcctStats *stats, BlockAcctCookie *cookie,
|
|
int64_t bytes, enum BlockAcctType type);
|
|
void block_acct_done(BlockAcctStats *stats, BlockAcctCookie *cookie);
|
|
void block_acct_failed(BlockAcctStats *stats, BlockAcctCookie *cookie);
|
|
void block_acct_invalid(BlockAcctStats *stats, enum BlockAcctType type);
|
|
void block_acct_merge_done(BlockAcctStats *stats, enum BlockAcctType type,
|
|
int num_requests);
|
|
int64_t block_acct_idle_time_ns(BlockAcctStats *stats);
|
|
|
|
#endif
|