Adding upstream version 18.2.2.upstream/18.2.2

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 45 insertions, 0 deletions

diff --git a/src/dmclock/README.md b/src/dmclock/README.md
new file mode 100644
index 000000000..8199ec5e1
--- /dev/null
+++ b/src/dmclock/README.md
@@ -0,0 +1,45 @@
+# dmclock
+
+This repository contains C++ 11 code that implements the dmclock
+distributed quality of service algorithm. See __mClock: Handling
+Throughput Variability for Hypervisor IO Scheduling__ by Gulati,
+Merchant, and Varman for a description of the algorithm.
+
+## Bugs and features
+
+There is a [dmclock project](https://tracker.ceph.com/projects/dmclock) through
+which bugs can be reported and features requested.
+
+## Running cmake
+
+When running cmake, set the build type with either:
+
+    -DCMAKE_BUILD_TYPE=Debug
+    -DCMAKE_BUILD_TYPE=Release
+
+To turn on profiling, run cmake with an additional:
+
+    -DPROFILE=yes
+
+## Running make
+
+### Building the dmclock library
+
+The `make` command builds a library libdmclock.a. That plus the header
+files in the src directory allow one to use the implementation in
+their code.
+
+### Building unit tests
+
+The `make dmclock-tests` command builds unit tests.
+
+### Building simulations
+
+The `make dmclock-sims` command builds two simulations -- *dmc_sim*
+and *ssched_sim* -- which incorporate, respectively, the dmclock
+priority queue or a very simple scheduler for comparison. Other
+priority queue implementations could be added in the future.
+
+## dmclock API
+
+To be written....