Merge remote-tracking branch 'remotes/gkurz/tags/for-upstream' into staging

This pull request brings:
- a fix to a minor bug reported by Coverity
- throttling support in the local backend (command line only)

# gpg: Signature made Tue 28 Feb 2017 09:32:30 GMT
# gpg:                using DSA key 0x02FC3AEB0101DBC2
# gpg: Good signature from "Greg Kurz <groug@kaod.org>"
# gpg:                 aka "Greg Kurz <groug@free.fr>"
# gpg:                 aka "Greg Kurz <gkurz@linux.vnet.ibm.com>"
# gpg:                 aka "Gregory Kurz (Groug) <groug@free.fr>"
# gpg:                 aka "[jpeg image of size 3330]"
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg:          There is no indication that the signature belongs to the owner.
# Primary key fingerprint: 2BD4 3B44 535E C0A7 9894  DBA2 02FC 3AEB 0101 DBC2

* remotes/gkurz/tags/for-upstream:
  throttle: factor out duplicate code
  fsdev: add IO throttle support to fsdev devices
  9pfs: fix v9fs_lock error case

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

1 files changed, 92 insertions, 0 deletions

diff --git a/include/qemu/throttle-options.h b/include/qemu/throttle-options.h
new file mode 100644
index 0000000000..3133d1ca40
--- /dev/null
+++ b/include/qemu/throttle-options.h
@@ -0,0 +1,92 @@
+/*
+ * QEMU throttling command line options
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or
+ * (at your option) any later version.
+ *
+ * See the COPYING file in the top-level directory for details.
+ *
+ */
+#ifndef THROTTLE_OPTIONS_H
+#define THROTTLE_OPTIONS_H
+
+#define THROTTLE_OPTS \
+          { \
+            .name = "throttling.iops-total",\
+            .type = QEMU_OPT_NUMBER,\
+            .help = "limit total I/O operations per second",\
+        },{ \
+            .name = "throttling.iops-read",\
+            .type = QEMU_OPT_NUMBER,\
+            .help = "limit read operations per second",\
+        },{ \
+            .name = "throttling.iops-write",\
+            .type = QEMU_OPT_NUMBER,\
+            .help = "limit write operations per second",\
+        },{ \
+            .name = "throttling.bps-total",\
+            .type = QEMU_OPT_NUMBER,\
+            .help = "limit total bytes per second",\
+        },{ \
+            .name = "throttling.bps-read",\
+            .type = QEMU_OPT_NUMBER,\
+            .help = "limit read bytes per second",\
+        },{ \
+            .name = "throttling.bps-write",\
+            .type = QEMU_OPT_NUMBER,\
+            .help = "limit write bytes per second",\
+        },{ \
+            .name = "throttling.iops-total-max",\
+            .type = QEMU_OPT_NUMBER,\
+            .help = "I/O operations burst",\
+        },{ \
+            .name = "throttling.iops-read-max",\
+            .type = QEMU_OPT_NUMBER,\
+            .help = "I/O operations read burst",\
+        },{ \
+            .name = "throttling.iops-write-max",\
+            .type = QEMU_OPT_NUMBER,\
+            .help = "I/O operations write burst",\
+        },{ \
+            .name = "throttling.bps-total-max",\
+            .type = QEMU_OPT_NUMBER,\
+            .help = "total bytes burst",\
+        },{ \
+            .name = "throttling.bps-read-max",\
+            .type = QEMU_OPT_NUMBER,\
+            .help = "total bytes read burst",\
+        },{ \
+            .name = "throttling.bps-write-max",\
+            .type = QEMU_OPT_NUMBER,\
+            .help = "total bytes write burst",\
+        },{ \
+            .name = "throttling.iops-total-max-length",\
+            .type = QEMU_OPT_NUMBER,\
+            .help = "length of the iops-total-max burst period, in seconds",\
+        },{ \
+            .name = "throttling.iops-read-max-length",\
+            .type = QEMU_OPT_NUMBER,\
+            .help = "length of the iops-read-max burst period, in seconds",\
+        },{ \
+            .name = "throttling.iops-write-max-length",\
+            .type = QEMU_OPT_NUMBER,\
+            .help = "length of the iops-write-max burst period, in seconds",\
+        },{ \
+            .name = "throttling.bps-total-max-length",\
+            .type = QEMU_OPT_NUMBER,\
+            .help = "length of the bps-total-max burst period, in seconds",\
+        },{ \
+            .name = "throttling.bps-read-max-length",\
+            .type = QEMU_OPT_NUMBER,\
+            .help = "length of the bps-read-max burst period, in seconds",\
+        },{ \
+            .name = "throttling.bps-write-max-length",\
+            .type = QEMU_OPT_NUMBER,\
+            .help = "length of the bps-write-max burst period, in seconds",\
+        },{ \
+            .name = "throttling.iops-size",\
+            .type = QEMU_OPT_NUMBER,\
+            .help = "when limiting by iops max size of an I/O in bytes",\
+        }
+
+#endif