[libvirt] [PATCH 3/3] qemu: Generate -numa command line option
Bharata B Rao
bharata at linux.vnet.ibm.com
Sun Nov 6 13:59:25 UTC 2011
qemu: Generate -numa option
From: Bharata B Rao <bharata at linux.vnet.ibm.com>
Add routines to generate -numa QEMU command line option based on
<numa> ... </numa> XML specifications.
Signed-off-by: Bharata B Rao <bharata at linux.vnet.ibm.com>
---
src/qemu/qemu_command.c | 71 ++++++++++++++++++++
tests/qemuxml2argvdata/qemuxml2argv-cpu-numa1.args | 5 +
tests/qemuxml2argvdata/qemuxml2argv-cpu-numa1.xml | 25 +++++++
tests/qemuxml2argvdata/qemuxml2argv-cpu-numa2.args | 6 ++
tests/qemuxml2argvdata/qemuxml2argv-cpu-numa2.xml | 25 +++++++
tests/qemuxml2argvtest.c | 2 +
6 files changed, 134 insertions(+), 0 deletions(-)
create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-cpu-numa1.args
create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-cpu-numa1.xml
create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-cpu-numa2.args
create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-cpu-numa2.xml
diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c
index dc92fa3..b042e34 100644
--- a/src/qemu/qemu_command.c
+++ b/src/qemu/qemu_command.c
@@ -3251,6 +3251,74 @@ qemuBuildSmpArgStr(const virDomainDefPtr def,
return virBufferContentAndReset(&buf);
}
+static int
+qemuBuildNumaCPUArgStr(char *cpumask, virBufferPtr buf)
+{
+ int i, first, last;
+ int cpuSet = 0;
+
+ for (i = 0; i < VIR_DOMAIN_CPUMASK_LEN; i++) {
+ if (cpumask[i]) {
+ if (cpuSet)
+ last = i;
+ else {
+ first = last = i;
+ cpuSet = 1;
+ }
+ } else {
+ if (!cpuSet)
+ continue;
+ if (first == last)
+ virBufferAsprintf(buf, "%d,", first);
+ else
+ virBufferAsprintf(buf, "%d-%d,", first, last);
+ cpuSet = 0;
+ }
+ }
+
+ if (cpuSet) {
+ if (first == last)
+ virBufferAsprintf(buf, "%d,", first);
+ else
+ virBufferAsprintf(buf, "%d-%d,", first, last);
+ }
+
+ /* Remove the trailing comma */
+ return virBufferTruncate(buf, 1);
+}
+
+static int
+qemuBuildNumaArgStr(const virDomainDefPtr def, virCommandPtr cmd)
+{
+ int i;
+ char *node;
+ virBuffer buf = VIR_BUFFER_INITIALIZER;
+
+ for (i = 0; i < def->cpu->ncells; i++) {
+ virCommandAddArg(cmd, "-numa");
+ virBufferAsprintf(&buf, "%s", "node");
+ virBufferAsprintf(&buf, ",nodeid=%d", def->cpu->cells[i].cellid);
+ virBufferAsprintf(&buf, ",cpus=");
+
+ if (qemuBuildNumaCPUArgStr(def->cpu->cells[i].cpumask, &buf))
+ goto error;
+
+ virBufferAsprintf(&buf, ",mems=%d", def->cpu->cells[i].mem);
+
+ if (virBufferError(&buf))
+ goto error;
+
+ node = virBufferContentAndReset(&buf);
+ virCommandAddArg(cmd, node);
+ VIR_FREE(node);
+ }
+ return 0;
+
+error:
+ virBufferFreeAndReset(&buf);
+ virReportOOMError();
+ return -1;
+}
/*
* Constructs a argv suitable for launching qemu with config defined
@@ -3414,6 +3482,9 @@ qemuBuildCommandLine(virConnectPtr conn,
virCommandAddArg(cmd, smp);
VIR_FREE(smp);
+ if (def->cpu && def->cpu->ncells && qemuBuildNumaArgStr(def, cmd))
+ goto error;
+
if (qemuCapsGet(qemuCaps, QEMU_CAPS_NAME)) {
virCommandAddArg(cmd, "-name");
if (driver->setProcessName &&
diff --git a/tests/qemuxml2argvdata/qemuxml2argv-cpu-numa1.args b/tests/qemuxml2argvdata/qemuxml2argv-cpu-numa1.args
new file mode 100644
index 0000000..e8fd277
--- /dev/null
+++ b/tests/qemuxml2argvdata/qemuxml2argv-cpu-numa1.args
@@ -0,0 +1,5 @@
+LC_ALL=C PATH=/bin HOME=/home/test USER=test LOGNAME=test ./qemu.sh -S -M pc \
+-m 214 -smp 16 -numa node,nodeid=0,cpus=0-7,mems=109550 \
+-numa node,nodeid=1,cpus=8-15,mems=109550 -nographic -monitor \
+unix:/tmp/test-monitor,server,nowait -no-acpi -boot n -net none -serial none \
+-parallel none -usb
diff --git a/tests/qemuxml2argvdata/qemuxml2argv-cpu-numa1.xml b/tests/qemuxml2argvdata/qemuxml2argv-cpu-numa1.xml
new file mode 100644
index 0000000..07fe891
--- /dev/null
+++ b/tests/qemuxml2argvdata/qemuxml2argv-cpu-numa1.xml
@@ -0,0 +1,25 @@
+<domain type='qemu'>
+ <name>QEMUGuest1</name>
+ <uuid>c7a5fdbd-edaf-9455-926a-d65c16db1809</uuid>
+ <memory>219100</memory>
+ <currentMemory>219100</currentMemory>
+ <vcpu>16</vcpu>
+ <os>
+ <type arch='x86_64' machine='pc'>hvm</type>
+ <boot dev='network'/>
+ </os>
+ <cpu>
+ <topology sockets="2" cores="4" threads="2"/>
+ <numa>
+ <cell cpus="0-7" mems="109550"/>
+ <cell cpus="8-15" mems="109550"/>
+ </numa>
+ </cpu>
+ <clock offset='utc'/>
+ <on_poweroff>destroy</on_poweroff>
+ <on_reboot>restart</on_reboot>
+ <on_crash>destroy</on_crash>
+ <devices>
+ <emulator>/./qemu.sh</emulator>
+ </devices>
+</domain>
diff --git a/tests/qemuxml2argvdata/qemuxml2argv-cpu-numa2.args b/tests/qemuxml2argvdata/qemuxml2argv-cpu-numa2.args
new file mode 100644
index 0000000..bc96cef
--- /dev/null
+++ b/tests/qemuxml2argvdata/qemuxml2argv-cpu-numa2.args
@@ -0,0 +1,6 @@
+LC_ALL=C PATH=/bin HOME=/home/test USER=test LOGNAME=test ./qemu.sh -S -M pc \
+-m 214 -smp 16,sockets=2,cores=4,threads=2 \
+-numa node,nodeid=0,cpus=0-7,mems=109550 \
+-numa node,nodeid=1,cpus=8-15,mems=109550 -nographic -monitor \
+unix:/tmp/test-monitor,server,nowait -no-acpi -boot n -net none -serial none \
+-parallel none -usb
diff --git a/tests/qemuxml2argvdata/qemuxml2argv-cpu-numa2.xml b/tests/qemuxml2argvdata/qemuxml2argv-cpu-numa2.xml
new file mode 100644
index 0000000..07fe891
--- /dev/null
+++ b/tests/qemuxml2argvdata/qemuxml2argv-cpu-numa2.xml
@@ -0,0 +1,25 @@
+<domain type='qemu'>
+ <name>QEMUGuest1</name>
+ <uuid>c7a5fdbd-edaf-9455-926a-d65c16db1809</uuid>
+ <memory>219100</memory>
+ <currentMemory>219100</currentMemory>
+ <vcpu>16</vcpu>
+ <os>
+ <type arch='x86_64' machine='pc'>hvm</type>
+ <boot dev='network'/>
+ </os>
+ <cpu>
+ <topology sockets="2" cores="4" threads="2"/>
+ <numa>
+ <cell cpus="0-7" mems="109550"/>
+ <cell cpus="8-15" mems="109550"/>
+ </numa>
+ </cpu>
+ <clock offset='utc'/>
+ <on_poweroff>destroy</on_poweroff>
+ <on_reboot>restart</on_reboot>
+ <on_crash>destroy</on_crash>
+ <devices>
+ <emulator>/./qemu.sh</emulator>
+ </devices>
+</domain>
diff --git a/tests/qemuxml2argvtest.c b/tests/qemuxml2argvtest.c
index 4d6db01..da8c016 100644
--- a/tests/qemuxml2argvtest.c
+++ b/tests/qemuxml2argvtest.c
@@ -578,6 +578,8 @@ mymain(void)
DO_TEST("cpu-exact1", false, NONE);
DO_TEST("cpu-exact2", false, NONE);
DO_TEST("cpu-strict1", false, NONE);
+ DO_TEST("cpu-numa1", false, NONE);
+ DO_TEST("cpu-numa2", false, QEMU_CAPS_SMP_TOPOLOGY);
DO_TEST("memtune", false, QEMU_CAPS_NAME);
DO_TEST("blkiotune", false, QEMU_CAPS_NAME);
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