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block/accounting: Use lock guard macros 

Replace manual lock()/unlock() calls with lock guard macros
(QEMU_LOCK_GUARD/WITH_QEMU_LOCK_GUARD) in block/accounting.

Signed-off-by: Gan Qixin <ganqixin@huawei.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20201203075055.127773-2-ganqixin@huawei.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Gan Qixin 2020-12-03 15:50:52 +08:00 committed by Kevin Wolf
parent b785d25e91
commit c37c973660
1 changed files with 15 additions and 17 deletions
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32
block/accounting.c
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@ -199,29 +199,27 @@ static void block_account_one_io(BlockAcctStats *stats, BlockAcctCookie *cookie,
return;
}
qemu_mutex_lock(&stats->lock);
WITH_QEMU_LOCK_GUARD(&stats->lock) {
if (failed) {
stats->failed_ops[cookie->type]++;
} else {
stats->nr_bytes[cookie->type] += cookie->bytes;
stats->nr_ops[cookie->type]++;
}
if (failed) {
stats->failed_ops[cookie->type]++;
} else {
stats->nr_bytes[cookie->type] += cookie->bytes;
stats->nr_ops[cookie->type]++;
}
block_latency_histogram_account(&stats->latency_histogram[cookie->type],
latency_ns);
block_latency_histogram_account(&stats->latency_histogram[cookie->type],
latency_ns);
if (!failed || stats->account_failed) {
stats->total_time_ns[cookie->type] += latency_ns;
stats->last_access_time_ns = time_ns;
if (!failed || stats->account_failed) {
stats->total_time_ns[cookie->type] += latency_ns;
stats->last_access_time_ns = time_ns;
QSLIST_FOREACH(s, &stats->intervals, entries) {
timed_average_account(&s->latency[cookie->type], latency_ns);
QSLIST_FOREACH(s, &stats->intervals, entries) {
timed_average_account(&s->latency[cookie->type], latency_ns);
}
}
}
qemu_mutex_unlock(&stats->lock);
cookie->type = BLOCK_ACCT_NONE;
}