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| author | Fam Zheng <famz@redhat.com> | 2015-04-01 09:45:38 +0800 |
|---|---|---|
| committer | Kevin Wolf <kwolf@redhat.com> | 2015-04-28 15:36:09 +0200 |
| commit | e5e51dd3af6a0872dedce290ee41437b5aeed109 (patch) | |
| tree | d5ff9a3ea2164c674e46831e1a11b4b13b7ca8cf /qapi | |
| parent | 9eddd6a4b3b187ba50038800b6e4aeda4973b365 (diff) | |
| download | qemu-e5e51dd3af6a0872dedce290ee41437b5aeed109.zip | |
block/null: Latency simulation by adding new option "latency-ns"
Aio context switch should just work because the requests will be
drained, so the scheduled timer(s) on the old context will be freed.
Signed-off-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 1427852740-24315-2-git-send-email-famz@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'qapi')
| -rw-r--r-- | qapi/block-core.json | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/qapi/block-core.json b/qapi/block-core.json index 78730846c2..e158a7cfc2 100644 --- a/qapi/block-core.json +++ b/qapi/block-core.json @@ -1310,11 +1310,14 @@ # Driver specific block device options for the null backend. # # @size: #optional size of the device in bytes. +# @latency-ns: #optional emulated latency (in nanoseconds) in processing +# requests. Default to zero which completes requests immediately. +# (Since 2.4) # # Since: 2.2 ## { 'type': 'BlockdevOptionsNull', - 'data': { '*size': 'int' } } + 'data': { '*size': 'int', '*latency-ns': 'uint64' } } ## # @BlockdevOptionsVVFAT |