diff options
Diffstat (limited to 'block/accounting.c')
| -rw-r--r-- | block/accounting.c | 24 |
1 files changed, 19 insertions, 5 deletions
diff --git a/block/accounting.c b/block/accounting.c index 49a9444377..923aeaf5be 100644 --- a/block/accounting.c +++ b/block/accounting.c @@ -28,6 +28,13 @@ static QEMUClockType clock_type = QEMU_CLOCK_REALTIME; +void block_acct_init(BlockAcctStats *stats, bool account_invalid, + bool account_failed) +{ + stats->account_invalid = account_invalid; + stats->account_failed = account_failed; +} + void block_acct_start(BlockAcctStats *stats, BlockAcctCookie *cookie, int64_t bytes, enum BlockAcctType type) { @@ -53,13 +60,17 @@ void block_acct_done(BlockAcctStats *stats, BlockAcctCookie *cookie) void block_acct_failed(BlockAcctStats *stats, BlockAcctCookie *cookie) { - int64_t time_ns = qemu_clock_get_ns(clock_type); - assert(cookie->type < BLOCK_MAX_IOTYPE); stats->failed_ops[cookie->type]++; - stats->total_time_ns[cookie->type] += time_ns - cookie->start_time_ns; - stats->last_access_time_ns = time_ns; + + if (stats->account_failed) { + int64_t time_ns = qemu_clock_get_ns(clock_type); + int64_t latency_ns = time_ns - cookie->start_time_ns; + + stats->total_time_ns[cookie->type] += latency_ns; + stats->last_access_time_ns = time_ns; + } } void block_acct_invalid(BlockAcctStats *stats, enum BlockAcctType type) @@ -72,7 +83,10 @@ void block_acct_invalid(BlockAcctStats *stats, enum BlockAcctType type) * therefore there's no actual I/O involved. */ stats->invalid_ops[type]++; - stats->last_access_time_ns = qemu_clock_get_ns(clock_type); + + if (stats->account_invalid) { + stats->last_access_time_ns = qemu_clock_get_ns(clock_type); + } } void block_acct_merge_done(BlockAcctStats *stats, enum BlockAcctType type, |