[libvirt] [PATCH 3/3] qemu: Generate -numa command line option

qemu: Generate -numa option From: Bharata B Rao <bharata(a)linux.vnet.ibm.com&gt; Add routines to generate -numa QEMU command line option based on <numa> ... </numa> XML specifications. Signed-off-by: Bharata B Rao <bharata(a)linux.vnet.ibm.com&gt; --- 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);