Instead of lengthy blurbs, switch to single-line, machine-readable
standardized (https://spdx.dev) license identifiers. The Linux kernel
switched long ago, so there is strong precedent.
Three cases are handled: AGPL-only, Apache-only, and dual licensed.
For the latter case, I chose (AGPL-3.0-or-later and Apache-2.0),
reasoning that our changes are extensive enough to apply our license.
The changes we applied mechanically with a script, except to
licenses/README.md.
Closes#9937
Now that the histogram has its own unit expressed in its template
parameter, there is no reason to convert it to nano just so we may need
to convert it back if the histogram needs another unit.
This patch will keep everything as a duration until last moment, and
then we'll convert when needed.
This was suggested by Amnon.
Signed-off-by: Glauber Costa <glauber@scylladb.com>
Message-Id: <218efa83e1c4ddc6806c51913d4e5f82dc6d231e.1479139020.git.glauber@scylladb.com>
When doing a spares latency check, it is required to know if a latency
object was started.
This returns true if the start timer was set.
Signed-off-by: Amnon Heiman <amnon@cloudius-systems.com>
The latency object is used to simplify calculating latencies. It uses a
start and stop time_point so the latency can be queried multiple time.
The start need to be done explicitely and not in the constructor to
allow reuse of the object.
Signed-off-by: Amnon Heiman <amnon@cloudius-systems.com>
