diff options
Diffstat (limited to 'include/block/accounting.h')
| -rw-r--r-- | include/block/accounting.h | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/include/block/accounting.h b/include/block/accounting.h index 66637cdfed..0f46cb4ec1 100644 --- a/include/block/accounting.h +++ b/include/block/accounting.h @@ -2,6 +2,7 @@ * QEMU System Emulator block accounting * * Copyright (c) 2011 Christoph Hellwig + * Copyright (c) 2015 Igalia, S.L. * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal @@ -25,8 +26,12 @@ #define BLOCK_ACCOUNTING_H #include <stdint.h> +#include <stdbool.h> #include "qemu/typedefs.h" +#include "qemu/timed-average.h" + +typedef struct BlockAcctTimedStats BlockAcctTimedStats; enum BlockAcctType { BLOCK_ACCT_READ, @@ -35,11 +40,23 @@ enum BlockAcctType { BLOCK_MAX_IOTYPE, }; +struct BlockAcctTimedStats { + TimedAverage latency[BLOCK_MAX_IOTYPE]; + unsigned interval_length; /* in seconds */ + QSLIST_ENTRY(BlockAcctTimedStats) entries; +}; + 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; + QSLIST_HEAD(, BlockAcctTimedStats) intervals; + bool account_invalid; + bool account_failed; } BlockAcctStats; typedef struct BlockAcctCookie { @@ -48,10 +65,21 @@ typedef struct BlockAcctCookie { enum BlockAcctType type; } BlockAcctCookie; +void block_acct_init(BlockAcctStats *stats, bool account_invalid, + bool account_failed); +void block_acct_cleanup(BlockAcctStats *stats); +void block_acct_add_interval(BlockAcctStats *stats, unsigned interval_length); +BlockAcctTimedStats *block_acct_interval_next(BlockAcctStats *stats, + BlockAcctTimedStats *s); 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); +double block_acct_queue_depth(BlockAcctTimedStats *stats, + enum BlockAcctType type); #endif |