8:12 a.m.
Since commit a39f69d2b libvirt would fail to start a VM if the default cpu set
was specified and individual vcpus were pinned to cpus outside of that cpuset.
Peter Krempa (8):
qemu: cgroup: Store auto cpuset instead of re-creating it on demand
qemu: cgroup: Refactor setup for IOThread cgroups
qemu: cgroup: Properly set up vcpu pinning
qemu: cgroup: Use priv->autoCpuset instead of using
qemuPrepareCpumap()
qemu: cgroup: Rename qemuSetupCgroupEmulatorPin to
qemuSetupCgroupCpusetCpus
qemu: cgroup: Kill qemuSetupCgroupIOThreadsPin()
qemu: cgroup: Kill qemuSetupCgroupVcpuPin()
qemu: Copy bitmap in a sane way
src/qemu/qemu_cgroup.c | 150 +++++++++++++++---------------------------------
src/qemu/qemu_cgroup.h | 13 +----
src/qemu/qemu_domain.c | 1 +
src/qemu/qemu_domain.h | 3 +
src/qemu/qemu_driver.c | 21 +++----
src/qemu/qemu_process.c | 93 +++++++++---------------------
src/qemu/qemu_process.h | 2 -
7 files changed, 85 insertions(+), 198 deletions(-)
--
2.2.2
8:12 a.m.
New subject: [libvirt] [PATCH 1/8] qemu: cgroup: Store auto cpuset instead of re-creating it on demand
The automatic cpuset can be stored along with automatic nodeset and it
does not have to be recreated when used.
---
src/qemu/qemu_cgroup.c | 21 +++++----------------
src/qemu/qemu_domain.c | 1 +
src/qemu/qemu_domain.h | 3 +++
src/qemu/qemu_process.c | 11 +++++++----
4 files changed, 16 insertions(+), 20 deletions(-)
diff --git a/src/qemu/qemu_cgroup.c b/src/qemu/qemu_cgroup.c
index a422fbc..bc7632f 100644
--- a/src/qemu/qemu_cgroup.c
+++ b/src/qemu/qemu_cgroup.c
@@ -642,8 +642,7 @@ qemuSetupCpusetMems(virDomainObjPtr vm)
static int
-qemuSetupCpusetCgroup(virDomainObjPtr vm,
- virCapsPtr caps)
+qemuSetupCpusetCgroup(virDomainObjPtr vm)
{
qemuDomainObjPrivatePtr priv = vm->privateData;
char *cpu_mask = NULL;
@@ -658,15 +657,10 @@ qemuSetupCpusetCgroup(virDomainObjPtr vm,
if (vm->def->cpumask ||
(vm->def->placement_mode == VIR_DOMAIN_CPU_PLACEMENT_MODE_AUTO)) {
- if (vm->def->placement_mode == VIR_DOMAIN_CPU_PLACEMENT_MODE_AUTO) {
- virBitmapPtr cpumap;
- if (!(cpumap = virCapabilitiesGetCpusForNodemask(caps,
priv->autoNodeset)))
- goto cleanup;
- cpu_mask = virBitmapFormat(cpumap);
- virBitmapFree(cpumap);
- } else {
+ if (vm->def->placement_mode == VIR_DOMAIN_CPU_PLACEMENT_MODE_AUTO)
+ cpu_mask = virBitmapFormat(priv->autoCpuset);
+ else
cpu_mask = virBitmapFormat(vm->def->cpumask);
- }
if (!cpu_mask)
goto cleanup;
@@ -896,7 +890,6 @@ qemuSetupCgroup(virQEMUDriverPtr driver,
int *nicindexes)
{
qemuDomainObjPrivatePtr priv = vm->privateData;
- virCapsPtr caps = NULL;
int ret = -1;
if (!vm->pid) {
@@ -911,9 +904,6 @@ qemuSetupCgroup(virQEMUDriverPtr driver,
if (!priv->cgroup)
return 0;
- if (!(caps = virQEMUDriverGetCapabilities(driver, false)))
- goto cleanup;
-
if (qemuSetupDevicesCgroup(driver, vm) < 0)
goto cleanup;
@@ -926,12 +916,11 @@ qemuSetupCgroup(virQEMUDriverPtr driver,
if (qemuSetupCpuCgroup(driver, vm) < 0)
goto cleanup;
- if (qemuSetupCpusetCgroup(vm, caps) < 0)
+ if (qemuSetupCpusetCgroup(vm) < 0)
goto cleanup;
ret = 0;
cleanup:
- virObjectUnref(caps);
return ret;
}
diff --git a/src/qemu/qemu_domain.c b/src/qemu/qemu_domain.c
index 758fcd9..d1be66e 100644
--- a/src/qemu/qemu_domain.c
+++ b/src/qemu/qemu_domain.c
@@ -458,6 +458,7 @@ qemuDomainObjPrivateFree(void *data)
}
VIR_FREE(priv->cleanupCallbacks);
virBitmapFree(priv->autoNodeset);
+ virBitmapFree(priv->autoCpuset);
VIR_FREE(priv);
}
diff --git a/src/qemu/qemu_domain.h b/src/qemu/qemu_domain.h
index b854b54..e4140d8 100644
--- a/src/qemu/qemu_domain.h
+++ b/src/qemu/qemu_domain.h
@@ -191,7 +191,10 @@ struct _qemuDomainObjPrivate {
char **qemuDevices; /* NULL-terminated list of devices aliases known to QEMU */
bool hookRun; /* true if there was a hook run over this domain */
+
+ /* Bitmaps below hold data from the auto NUMA feature */
virBitmapPtr autoNodeset;
+ virBitmapPtr autoCpuset;
};
typedef enum {
diff --git a/src/qemu/qemu_process.c b/src/qemu/qemu_process.c
index 79f763e..4a786b1 100644
--- a/src/qemu/qemu_process.c
+++ b/src/qemu/qemu_process.c
@@ -4321,7 +4321,6 @@ int qemuProcessStart(virConnectPtr conn,
size_t i;
bool rawio_set = false;
char *nodeset = NULL;
- virBitmapPtr nodemask = NULL;
unsigned int stop_flags;
virQEMUDriverConfigPtr cfg;
virCapsPtr caps = NULL;
@@ -4582,10 +4581,14 @@ int qemuProcessStart(virConnectPtr conn,
VIR_DEBUG("Nodeset returned from numad: %s", nodeset);
- if (virBitmapParse(nodeset, 0, &nodemask, VIR_DOMAIN_CPUMASK_LEN) < 0)
+ if (virBitmapParse(nodeset, 0, &priv->autoNodeset,
+ VIR_DOMAIN_CPUMASK_LEN) < 0)
+ goto cleanup;
+
+ if (!(priv->autoCpuset = virCapabilitiesGetCpusForNodemask(caps,
+
priv->autoNodeset)))
goto cleanup;
}
- priv->autoNodeset = nodemask;
/* "volume" type disk's source must be translated before
* cgroup and security setting.
@@ -4652,7 +4655,7 @@ int qemuProcessStart(virConnectPtr conn,
migrateFrom, stdin_fd, snapshot, vmop,
&buildCommandLineCallbacks, false,
qemuCheckFips(),
- nodemask,
+ priv->autoNodeset,
&nnicindexes, &nicindexes)))
goto cleanup;
--
2.2.2
8:12 a.m.
New subject: [libvirt] [PATCH 2/8] qemu: cgroup: Refactor setup for IOThread cgroups
Use the default or auto cpuset if they are provided for IOThreads.
---
src/qemu/qemu_cgroup.c | 29 +++++++++++++++++------------
1 file changed, 17 insertions(+), 12 deletions(-)
diff --git a/src/qemu/qemu_cgroup.c b/src/qemu/qemu_cgroup.c
index bc7632f..be02ede 100644
--- a/src/qemu/qemu_cgroup.c
+++ b/src/qemu/qemu_cgroup.c
@@ -1255,21 +1255,26 @@ qemuSetupCgroupForIOThreads(virDomainObjPtr vm)
/* Set iothreadpin in cgroup if iothreadpin xml is provided */
if (virCgroupHasController(priv->cgroup,
VIR_CGROUP_CONTROLLER_CPUSET)) {
- /* find the right CPU to pin, otherwise
- * qemuSetupCgroupIOThreadsPin will fail. */
- for (j = 0; j < def->cputune.niothreadspin; j++) {
- /* IOThreads are numbered/named 1..n */
- if (def->cputune.iothreadspin[j]->id != i + 1)
- continue;
+ virBitmapPtr cpumask = NULL;
- if (qemuSetupCgroupIOThreadsPin(cgroup_iothread,
- def->cputune.iothreadspin,
- def->cputune.niothreadspin,
- i + 1) < 0)
- goto cleanup;
+ /* default cpu masks */
+ if (def->placement_mode == VIR_DOMAIN_CPU_PLACEMENT_MODE_AUTO)
+ cpumask = priv->autoCpuset;
+ else
+ cpumask = def->cpumask;
- break;
+ /* specific cpu mask */
+ for (j = 0; j < def->cputune.niothreadspin; j++) {
+ /* IOThreads are numbered/named 1..n */
+ if (def->cputune.iothreadspin[j]->id == i + 1) {
+ cpumask = def->cputune.iothreadspin[j]->cpumask;
+ break;
+ }
}
+
+ if (cpumask &&
+ qemuSetupCgroupEmulatorPin(cgroup_iothread, cpumask) < 0)
+ goto cleanup;
}
virCgroupFree(&cgroup_iothread);
--
2.2.2
8:12 a.m.
New subject: [libvirt] [PATCH 3/8] qemu: cgroup: Properly set up vcpu pinning
When the default cpuset or automatic numa placement is used libvirt
would place the whole parent cgroup in the specified cpuset. This then
disallowed to re-pin the vcpus to a different cpu.
This patch pins only the vcpu threads to the default cpuset and thus
allows to re-pin them later.
The following config would fail to start:
<domain type='kvm'>
...
<vcpu placement='static' cpuset='0-1'
current='2'>4</vcpu>
<cputune>
<vcpupin vcpu='0' cpuset='2-3'/>
...
This is a regression since a39f69d2b.
---
src/qemu/qemu_cgroup.c | 51 +++++++++++++++++++-------------------------------
1 file changed, 19 insertions(+), 32 deletions(-)
diff --git a/src/qemu/qemu_cgroup.c b/src/qemu/qemu_cgroup.c
index be02ede..8674ab8 100644
--- a/src/qemu/qemu_cgroup.c
+++ b/src/qemu/qemu_cgroup.c
@@ -645,8 +645,6 @@ static int
qemuSetupCpusetCgroup(virDomainObjPtr vm)
{
qemuDomainObjPrivatePtr priv = vm->privateData;
- char *cpu_mask = NULL;
- int ret = -1;
if (!virCgroupHasController(priv->cgroup, VIR_CGROUP_CONTROLLER_CPUSET))
return 0;
@@ -654,25 +652,7 @@ qemuSetupCpusetCgroup(virDomainObjPtr vm)
if (virCgroupSetCpusetMemoryMigrate(priv->cgroup, true) < 0)
return -1;
- if (vm->def->cpumask ||
- (vm->def->placement_mode == VIR_DOMAIN_CPU_PLACEMENT_MODE_AUTO)) {
-
- if (vm->def->placement_mode == VIR_DOMAIN_CPU_PLACEMENT_MODE_AUTO)
- cpu_mask = virBitmapFormat(priv->autoCpuset);
- else
- cpu_mask = virBitmapFormat(vm->def->cpumask);
-
- if (!cpu_mask)
- goto cleanup;
-
- if (virCgroupSetCpusetCpus(priv->cgroup, cpu_mask) < 0)
- goto cleanup;
- }
-
- ret = 0;
- cleanup:
- VIR_FREE(cpu_mask);
- return ret;
+ return 0;
}
@@ -1079,20 +1059,27 @@ qemuSetupCgroupForVcpu(virDomainObjPtr vm)
/* Set vcpupin in cgroup if vcpupin xml is provided */
if (virCgroupHasController(priv->cgroup, VIR_CGROUP_CONTROLLER_CPUSET)) {
- /* find the right CPU to pin, otherwise
- * qemuSetupCgroupVcpuPin will fail. */
- for (j = 0; j < def->cputune.nvcpupin; j++) {
- if (def->cputune.vcpupin[j]->id != i)
- continue;
+ virBitmapPtr cpumap = NULL;
- if (qemuSetupCgroupVcpuPin(cgroup_vcpu,
- def->cputune.vcpupin,
- def->cputune.nvcpupin,
- i) < 0)
- goto cleanup;
+ /* try to use the default cpu maps */
+ if (vm->def->placement_mode == VIR_DOMAIN_CPU_PLACEMENT_MODE_AUTO)
+ cpumap = priv->autoCpuset;
+ else
+ cpumap = vm->def->cpumask;
- break;
+ /* lookup a more specific pinning info */
+ for (j = 0; j < def->cputune.nvcpupin; j++) {
+ if (def->cputune.vcpupin[j]->id == i) {
+ cpumap = def->cputune.vcpupin[j]->cpumask;
+ break;
+ }
}
+
+ if (!cpumap)
+ continue;
+
+ if (qemuSetupCgroupEmulatorPin(cgroup_vcpu, cpumap) < 0)
+ goto cleanup;
}
virCgroupFree(&cgroup_vcpu);
--
2.2.2
8:12 a.m.
New subject: [libvirt] [PATCH 4/8] qemu: cgroup: Use priv->autoCpuset instead of using qemuPrepareCpumap()
Two places would call to qemuPrepareCpumap() with priv->autoNodeset to
convert it to a cpuset. Remove the function and use the prepared cpuset
automatically.
---
src/qemu/qemu_cgroup.c | 18 +++--------
src/qemu/qemu_cgroup.h | 3 +-
src/qemu/qemu_process.c | 82 ++++++++++++-------------------------------------
src/qemu/qemu_process.h | 2 --
4 files changed, 25 insertions(+), 80 deletions(-)
diff --git a/src/qemu/qemu_cgroup.c b/src/qemu/qemu_cgroup.c
index 8674ab8..7ba3059 100644
--- a/src/qemu/qemu_cgroup.c
+++ b/src/qemu/qemu_cgroup.c
@@ -1099,11 +1099,9 @@ qemuSetupCgroupForVcpu(virDomainObjPtr vm)
}
int
-qemuSetupCgroupForEmulator(virQEMUDriverPtr driver,
- virDomainObjPtr vm)
+qemuSetupCgroupForEmulator(virDomainObjPtr vm)
{
virBitmapPtr cpumask = NULL;
- virBitmapPtr cpumap = NULL;
virCgroupPtr cgroup_emulator = NULL;
virDomainDefPtr def = vm->def;
qemuDomainObjPrivatePtr priv = vm->privateData;
@@ -1135,15 +1133,12 @@ qemuSetupCgroupForEmulator(virQEMUDriverPtr driver,
if (virCgroupMoveTask(priv->cgroup, cgroup_emulator) < 0)
goto cleanup;
- if (def->placement_mode == VIR_DOMAIN_CPU_PLACEMENT_MODE_AUTO) {
- if (!(cpumap = qemuPrepareCpumap(driver, priv->autoNodeset)))
- goto cleanup;
- cpumask = cpumap;
- } else if (def->cputune.emulatorpin) {
+ if (def->placement_mode == VIR_DOMAIN_CPU_PLACEMENT_MODE_AUTO)
+ cpumask = priv->autoCpuset;
+ else if (def->cputune.emulatorpin)
cpumask = def->cputune.emulatorpin->cpumask;
- } else if (def->cpumask) {
+ else if (def->cpumask)
cpumask = def->cpumask;
- }
if (cpumask) {
if (virCgroupHasController(priv->cgroup, VIR_CGROUP_CONTROLLER_CPUSET)
&&
@@ -1159,12 +1154,9 @@ qemuSetupCgroupForEmulator(virQEMUDriverPtr driver,
}
virCgroupFree(&cgroup_emulator);
- virBitmapFree(cpumap);
return 0;
cleanup:
- virBitmapFree(cpumap);
-
if (cgroup_emulator) {
virCgroupRemove(cgroup_emulator);
virCgroupFree(&cgroup_emulator);
diff --git a/src/qemu/qemu_cgroup.h b/src/qemu/qemu_cgroup.h
index b311af3..11893ef 100644
--- a/src/qemu/qemu_cgroup.h
+++ b/src/qemu/qemu_cgroup.h
@@ -63,8 +63,7 @@ int qemuSetupCgroupIOThreadsPin(virCgroupPtr cgroup,
int iothreadid);
int qemuSetupCgroupForVcpu(virDomainObjPtr vm);
int qemuSetupCgroupForIOThreads(virDomainObjPtr vm);
-int qemuSetupCgroupForEmulator(virQEMUDriverPtr driver,
- virDomainObjPtr vm);
+int qemuSetupCgroupForEmulator(virDomainObjPtr vm);
int qemuRemoveCgroup(virQEMUDriverPtr driver, virDomainObjPtr vm);
int qemuAddToCgroup(virDomainObjPtr vm);
diff --git a/src/qemu/qemu_process.c b/src/qemu/qemu_process.c
index 4a786b1..69c44d9 100644
--- a/src/qemu/qemu_process.c
+++ b/src/qemu/qemu_process.c
@@ -2273,67 +2273,12 @@ qemuProcessDetectIOThreadPIDs(virQEMUDriverPtr driver,
return ret;
}
-/* Helper to prepare cpumap for affinity setting, convert
- * NUMA nodeset into cpuset if @nodemask is not NULL, otherwise
- * just return a new allocated bitmap.
- */
-virBitmapPtr
-qemuPrepareCpumap(virQEMUDriverPtr driver,
- virBitmapPtr nodemask)
-{
- size_t i;
- int hostcpus, maxcpu = QEMUD_CPUMASK_LEN;
- virBitmapPtr cpumap = NULL;
- virCapsPtr caps = NULL;
-
- /* setaffinity fails if you set bits for CPUs which
- * aren't present, so we have to limit ourselves */
- if ((hostcpus = nodeGetCPUCount()) < 0)
- return NULL;
-
- if (maxcpu > hostcpus)
- maxcpu = hostcpus;
-
- if (!(cpumap = virBitmapNew(maxcpu)))
- return NULL;
-
- if (nodemask) {
- if (!(caps = virQEMUDriverGetCapabilities(driver, false))) {
- virBitmapFree(cpumap);
- cpumap = NULL;
- goto cleanup;
- }
-
- for (i = 0; i < caps->host.nnumaCell; i++) {
- size_t j;
- int cur_ncpus = caps->host.numaCell[i]->ncpus;
- bool result;
- if (virBitmapGetBit(nodemask, caps->host.numaCell[i]->num, &result)
< 0) {
- virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
- _("Failed to convert nodeset to cpuset"));
- virBitmapFree(cpumap);
- cpumap = NULL;
- goto cleanup;
- }
- if (result) {
- for (j = 0; j < cur_ncpus; j++)
- ignore_value(virBitmapSetBit(cpumap,
-
caps->host.numaCell[i]->cpus[j].id));
- }
- }
- }
-
- cleanup:
- virObjectUnref(caps);
- return cpumap;
-}
/*
* To be run between fork/exec of QEMU only
*/
static int
-qemuProcessInitCpuAffinity(virQEMUDriverPtr driver,
- virDomainObjPtr vm)
+qemuProcessInitCpuAffinity(virDomainObjPtr vm)
{
int ret = -1;
virBitmapPtr cpumap = NULL;
@@ -2346,23 +2291,34 @@ qemuProcessInitCpuAffinity(virQEMUDriverPtr driver,
return -1;
}
- if (!(cpumap = qemuPrepareCpumap(driver, priv->autoNodeset)))
- return -1;
-
if (vm->def->placement_mode == VIR_DOMAIN_CPU_PLACEMENT_MODE_AUTO) {
VIR_DEBUG("Set CPU affinity with advisory nodeset from numad");
- cpumapToSet = cpumap;
+ cpumapToSet = priv->autoCpuset;
} else {
VIR_DEBUG("Set CPU affinity with specified cpuset");
if (vm->def->cpumask) {
cpumapToSet = vm->def->cpumask;
} else {
- cpumapToSet = cpumap;
/* You may think this is redundant, but we can't assume libvirtd
* itself is running on all pCPUs, so we need to explicitly set
* the spawned QEMU instance to all pCPUs if no map is given in
* its config file */
+ int hostcpus;
+
+ /* setaffinity fails if you set bits for CPUs which
+ * aren't present, so we have to limit ourselves */
+ if ((hostcpus = nodeGetCPUCount()) < 0)
+ goto cleanup;
+
+ if (hostcpus > QEMUD_CPUMASK_LEN)
+ hostcpus = QEMUD_CPUMASK_LEN;
+
+ if (!(cpumap = virBitmapNew(hostcpus)))
+ goto cleanup;
+
virBitmapSetAll(cpumap);
+
+ cpumapToSet = cpumap;
}
}
@@ -4787,7 +4743,7 @@ int qemuProcessStart(virConnectPtr conn,
/* This must be done after cgroup placement to avoid resetting CPU
* affinity */
if (!vm->def->cputune.emulatorpin &&
- qemuProcessInitCpuAffinity(driver, vm) < 0)
+ qemuProcessInitCpuAffinity(vm) < 0)
goto cleanup;
VIR_DEBUG("Setting domain security labels");
@@ -4834,7 +4790,7 @@ int qemuProcessStart(virConnectPtr conn,
goto cleanup;
VIR_DEBUG("Setting cgroup for emulator (if required)");
- if (qemuSetupCgroupForEmulator(driver, vm) < 0)
+ if (qemuSetupCgroupForEmulator(vm) < 0)
goto cleanup;
VIR_DEBUG("Setting affinity of emulator threads");
diff --git a/src/qemu/qemu_process.h b/src/qemu/qemu_process.h
index 3c04179..c67b0cb 100644
--- a/src/qemu/qemu_process.h
+++ b/src/qemu/qemu_process.h
@@ -99,8 +99,6 @@ int qemuProcessAutoDestroyRemove(virQEMUDriverPtr driver,
virDomainObjPtr vm);
bool qemuProcessAutoDestroyActive(virQEMUDriverPtr driver,
virDomainObjPtr vm);
-virBitmapPtr qemuPrepareCpumap(virQEMUDriverPtr driver,
- virBitmapPtr nodemask);
int qemuProcessReadLog(int fd, char *buf, int buflen, int off, bool skipchar);
--
2.2.2
8:12 a.m.
New subject: [libvirt] [PATCH 5/8] qemu: cgroup: Rename qemuSetupCgroupEmulatorPin to qemuSetupCgroupCpusetCpus
The function is used to set cpuset.cpus in various other helpers.
---
src/qemu/qemu_cgroup.c | 14 +++++++-------
src/qemu/qemu_cgroup.h | 2 +-
src/qemu/qemu_driver.c | 4 ++--
3 files changed, 10 insertions(+), 10 deletions(-)
diff --git a/src/qemu/qemu_cgroup.c b/src/qemu/qemu_cgroup.c
index 7ba3059..fad7003 100644
--- a/src/qemu/qemu_cgroup.c
+++ b/src/qemu/qemu_cgroup.c
@@ -952,7 +952,7 @@ qemuSetupCgroupVcpuPin(virCgroupPtr cgroup,
for (i = 0; i < nvcpupin; i++) {
if (vcpuid == vcpupin[i]->id)
- return qemuSetupCgroupEmulatorPin(cgroup, vcpupin[i]->cpumask);
+ return qemuSetupCgroupCpusetCpus(cgroup, vcpupin[i]->cpumask);
}
return -1;
@@ -968,15 +968,15 @@ qemuSetupCgroupIOThreadsPin(virCgroupPtr cgroup,
for (i = 0; i < niothreadspin; i++) {
if (iothreadid == iothreadspin[i]->id)
- return qemuSetupCgroupEmulatorPin(cgroup, iothreadspin[i]->cpumask);
+ return qemuSetupCgroupCpusetCpus(cgroup, iothreadspin[i]->cpumask);
}
return -1;
}
int
-qemuSetupCgroupEmulatorPin(virCgroupPtr cgroup,
- virBitmapPtr cpumask)
+qemuSetupCgroupCpusetCpus(virCgroupPtr cgroup,
+ virBitmapPtr cpumask)
{
int ret = -1;
char *new_cpus = NULL;
@@ -1078,7 +1078,7 @@ qemuSetupCgroupForVcpu(virDomainObjPtr vm)
if (!cpumap)
continue;
- if (qemuSetupCgroupEmulatorPin(cgroup_vcpu, cpumap) < 0)
+ if (qemuSetupCgroupCpusetCpus(cgroup_vcpu, cpumap) < 0)
goto cleanup;
}
@@ -1142,7 +1142,7 @@ qemuSetupCgroupForEmulator(virDomainObjPtr vm)
if (cpumask) {
if (virCgroupHasController(priv->cgroup, VIR_CGROUP_CONTROLLER_CPUSET)
&&
- qemuSetupCgroupEmulatorPin(cgroup_emulator, cpumask) < 0)
+ qemuSetupCgroupCpusetCpus(cgroup_emulator, cpumask) < 0)
goto cleanup;
}
@@ -1252,7 +1252,7 @@ qemuSetupCgroupForIOThreads(virDomainObjPtr vm)
}
if (cpumask &&
- qemuSetupCgroupEmulatorPin(cgroup_iothread, cpumask) < 0)
+ qemuSetupCgroupCpusetCpus(cgroup_iothread, cpumask) < 0)
goto cleanup;
}
diff --git a/src/qemu/qemu_cgroup.h b/src/qemu/qemu_cgroup.h
index 11893ef..0f7be7e 100644
--- a/src/qemu/qemu_cgroup.h
+++ b/src/qemu/qemu_cgroup.h
@@ -56,7 +56,7 @@ int qemuSetupCgroupVcpuPin(virCgroupPtr cgroup,
virDomainPinDefPtr *vcpupin,
int nvcpupin,
int vcpuid);
-int qemuSetupCgroupEmulatorPin(virCgroupPtr cgroup, virBitmapPtr cpumask);
+int qemuSetupCgroupCpusetCpus(virCgroupPtr cgroup, virBitmapPtr cpumask);
int qemuSetupCgroupIOThreadsPin(virCgroupPtr cgroup,
virDomainPinDefPtr *iothreadspin,
int niothreadspin,
diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c
index db4f0b4..949ba44 100644
--- a/src/qemu/qemu_driver.c
+++ b/src/qemu/qemu_driver.c
@@ -5420,8 +5420,8 @@ qemuDomainPinEmulator(virDomainPtr dom,
*/
if (virCgroupNewEmulator(priv->cgroup, false, &cgroup_emulator)
< 0)
goto endjob;
- if (qemuSetupCgroupEmulatorPin(cgroup_emulator,
- newVcpuPin[0]->cpumask) < 0) {
+ if (qemuSetupCgroupCpusetCpus(cgroup_emulator,
+ newVcpuPin[0]->cpumask) < 0) {
virReportError(VIR_ERR_OPERATION_INVALID, "%s",
_("failed to set cpuset.cpus in cgroup"
" for emulator threads"));
--
2.2.2
8:12 a.m.
New subject: [libvirt] [PATCH 6/8] qemu: cgroup: Kill qemuSetupCgroupIOThreadsPin()
The function doesn't make sense. There's a simpler way to achieve the
same.
---
src/qemu/qemu_cgroup.c | 15 ---------------
src/qemu/qemu_cgroup.h | 4 ----
src/qemu/qemu_driver.c | 5 +----
3 files changed, 1 insertion(+), 23 deletions(-)
diff --git a/src/qemu/qemu_cgroup.c b/src/qemu/qemu_cgroup.c
index fad7003..bd768ef 100644
--- a/src/qemu/qemu_cgroup.c
+++ b/src/qemu/qemu_cgroup.c
@@ -958,21 +958,6 @@ qemuSetupCgroupVcpuPin(virCgroupPtr cgroup,
return -1;
}
-int
-qemuSetupCgroupIOThreadsPin(virCgroupPtr cgroup,
- virDomainPinDefPtr *iothreadspin,
- int niothreadspin,
- int iothreadid)
-{
- size_t i;
-
- for (i = 0; i < niothreadspin; i++) {
- if (iothreadid == iothreadspin[i]->id)
- return qemuSetupCgroupCpusetCpus(cgroup, iothreadspin[i]->cpumask);
- }
-
- return -1;
-}
int
qemuSetupCgroupCpusetCpus(virCgroupPtr cgroup,
diff --git a/src/qemu/qemu_cgroup.h b/src/qemu/qemu_cgroup.h
index 0f7be7e..cdeb307 100644
--- a/src/qemu/qemu_cgroup.h
+++ b/src/qemu/qemu_cgroup.h
@@ -57,10 +57,6 @@ int qemuSetupCgroupVcpuPin(virCgroupPtr cgroup,
int nvcpupin,
int vcpuid);
int qemuSetupCgroupCpusetCpus(virCgroupPtr cgroup, virBitmapPtr cpumask);
-int qemuSetupCgroupIOThreadsPin(virCgroupPtr cgroup,
- virDomainPinDefPtr *iothreadspin,
- int niothreadspin,
- int iothreadid);
int qemuSetupCgroupForVcpu(virDomainObjPtr vm);
int qemuSetupCgroupForIOThreads(virDomainObjPtr vm);
int qemuSetupCgroupForEmulator(virDomainObjPtr vm);
diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c
index 949ba44..fc44ef1 100644
--- a/src/qemu/qemu_driver.c
+++ b/src/qemu/qemu_driver.c
@@ -6016,10 +6016,7 @@ qemuDomainPinIOThread(virDomainPtr dom,
if (virCgroupNewIOThread(priv->cgroup, iothread_id,
false, &cgroup_iothread) < 0)
goto endjob;
- if (qemuSetupCgroupIOThreadsPin(cgroup_iothread,
- newIOThreadsPin,
- newIOThreadsPinNum,
- iothread_id) < 0) {
+ if (qemuSetupCgroupCpusetCpus(cgroup_iothread, pcpumap) < 0) {
virReportError(VIR_ERR_OPERATION_INVALID,
_("failed to set cpuset.cpus in cgroup"
" for iothread %d"), iothread_id);
--
2.2.2
8:12 a.m.
New subject: [libvirt] [PATCH 7/8] qemu: cgroup: Kill qemuSetupCgroupVcpuPin()
The function doesn't make sense. There's a simpler way to achieve the
same.
---
src/qemu/qemu_cgroup.c | 16 ----------------
src/qemu/qemu_cgroup.h | 4 ----
src/qemu/qemu_driver.c | 8 +++-----
3 files changed, 3 insertions(+), 25 deletions(-)
diff --git a/src/qemu/qemu_cgroup.c b/src/qemu/qemu_cgroup.c
index bd768ef..50546a1 100644
--- a/src/qemu/qemu_cgroup.c
+++ b/src/qemu/qemu_cgroup.c
@@ -942,22 +942,6 @@ qemuSetupCgroupVcpuBW(virCgroupPtr cgroup,
return -1;
}
-int
-qemuSetupCgroupVcpuPin(virCgroupPtr cgroup,
- virDomainPinDefPtr *vcpupin,
- int nvcpupin,
- int vcpuid)
-{
- size_t i;
-
- for (i = 0; i < nvcpupin; i++) {
- if (vcpuid == vcpupin[i]->id)
- return qemuSetupCgroupCpusetCpus(cgroup, vcpupin[i]->cpumask);
- }
-
- return -1;
-}
-
int
qemuSetupCgroupCpusetCpus(virCgroupPtr cgroup,
diff --git a/src/qemu/qemu_cgroup.h b/src/qemu/qemu_cgroup.h
index cdeb307..711a6de 100644
--- a/src/qemu/qemu_cgroup.h
+++ b/src/qemu/qemu_cgroup.h
@@ -52,10 +52,6 @@ int qemuSetupCpusetMems(virDomainObjPtr vm);
int qemuSetupCgroupVcpuBW(virCgroupPtr cgroup,
unsigned long long period,
long long quota);
-int qemuSetupCgroupVcpuPin(virCgroupPtr cgroup,
- virDomainPinDefPtr *vcpupin,
- int nvcpupin,
- int vcpuid);
int qemuSetupCgroupCpusetCpus(virCgroupPtr cgroup, virBitmapPtr cpumask);
int qemuSetupCgroupForVcpu(virDomainObjPtr vm);
int qemuSetupCgroupForIOThreads(virDomainObjPtr vm);
diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c
index fc44ef1..58fa3c6 100644
--- a/src/qemu/qemu_driver.c
+++ b/src/qemu/qemu_driver.c
@@ -4768,9 +4768,8 @@ static int qemuDomainHotplugVcpus(virQEMUDriverPtr driver,
}
if (cgroup_vcpu) {
- if (qemuSetupCgroupVcpuPin(cgroup_vcpu,
- vm->def->cputune.vcpupin,
- vm->def->cputune.nvcpupin, i) <
0) {
+ if (qemuSetupCgroupCpusetCpus(cgroup_vcpu,
+ vcpupin->cpumask) < 0) {
virReportError(VIR_ERR_OPERATION_INVALID,
_("failed to set cpuset.cpus in cgroup"
" for vcpu %zu"), i);
@@ -5136,8 +5135,7 @@ qemuDomainPinVcpuFlags(virDomainPtr dom,
if (virCgroupHasController(priv->cgroup, VIR_CGROUP_CONTROLLER_CPUSET)) {
if (virCgroupNewVcpu(priv->cgroup, vcpu, false, &cgroup_vcpu) < 0)
goto endjob;
- if (qemuSetupCgroupVcpuPin(cgroup_vcpu, newVcpuPin, newVcpuPinNum,
- vcpu) < 0) {
+ if (qemuSetupCgroupCpusetCpus(cgroup_vcpu, pcpumap) < 0) {
virReportError(VIR_ERR_OPERATION_INVALID,
_("failed to set cpuset.cpus in cgroup"
" for vcpu %d"), vcpu);
--
2.2.2
8:12 a.m.
New subject: [libvirt] [PATCH 8/8] qemu: Copy bitmap in a sane way
Use virBitmapNewCopy instead of a combination of virBitmapNew and
virBitmapCopy.
---
src/qemu/qemu_driver.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c
index 58fa3c6..71bbf6e 100644
--- a/src/qemu/qemu_driver.c
+++ b/src/qemu/qemu_driver.c
@@ -4752,12 +4752,10 @@ static int qemuDomainHotplugVcpus(virQEMUDriverPtr driver,
if (VIR_ALLOC(vcpupin) < 0)
goto cleanup;
- if (!(vcpupin->cpumask =
- virBitmapNew(VIR_DOMAIN_CPUMASK_LEN))) {
+ if (!(vcpupin->cpumask = virBitmapNewCopy(vm->def->cpumask))) {
VIR_FREE(vcpupin);
goto cleanup;
}
- virBitmapCopy(vcpupin->cpumask, vm->def->cpumask);
vcpupin->id = i;
if (VIR_APPEND_ELEMENT_COPY(vm->def->cputune.vcpupin,
vm->def->cputune.nvcpupin, vcpupin)
< 0) {
--
2.2.2
10:13 a.m.
On 03/27/2015 07:12 AM, Peter Krempa wrote:
Since commit a39f69d2b libvirt would fail to start a VM if the
default cpu set
was specified and individual vcpus were pinned to cpus outside of that cpuset.
Peter Krempa (8):
qemu: cgroup: Store auto cpuset instead of re-creating it on demand
qemu: cgroup: Refactor setup for IOThread cgroups
qemu: cgroup: Properly set up vcpu pinning
qemu: cgroup: Use priv->autoCpuset instead of using
qemuPrepareCpumap()
qemu: cgroup: Rename qemuSetupCgroupEmulatorPin to
qemuSetupCgroupCpusetCpus
qemu: cgroup: Kill qemuSetupCgroupIOThreadsPin()
qemu: cgroup: Kill qemuSetupCgroupVcpuPin()
qemu: Copy bitmap in a sane way
Not a review of this series, but related to cgroups so also needs fixing:
Running ./autobuild.sh currently fails on the mingw-cross-compilation
section, due to:
CCLD libvirt.la
Cannot export virCgroupDetectMountsFromFile: symbol not defined
Cannot export virCgroupGetCpusetMemoryMigrate: symbol not defined
Cannot export virCgroupSetCpusetMemoryMigrate: symbol not defined
--
Eric Blake eblake redhat com +1-919-301-3266
Libvirt virtualization library http://libvirt.org
11:19 a.m.
On 03/27/2015 11:13 AM, Eric Blake wrote:
On 03/27/2015 07:12 AM, Peter Krempa wrote:
> Since commit a39f69d2b libvirt would fail to start a VM if the default cpu set
> was specified and individual vcpus were pinned to cpus outside of that cpuset.
>
> Peter Krempa (8):
> qemu: cgroup: Store auto cpuset instead of re-creating it on demand
> qemu: cgroup: Refactor setup for IOThread cgroups
> qemu: cgroup: Properly set up vcpu pinning
> qemu: cgroup: Use priv->autoCpuset instead of using
> qemuPrepareCpumap()
> qemu: cgroup: Rename qemuSetupCgroupEmulatorPin to
> qemuSetupCgroupCpusetCpus
> qemu: cgroup: Kill qemuSetupCgroupIOThreadsPin()
> qemu: cgroup: Kill qemuSetupCgroupVcpuPin()
> qemu: Copy bitmap in a sane way
Not a review of this series, but related to cgroups so also needs fixing:
Running ./autobuild.sh currently fails on the mingw-cross-compilation
section, due to:
CCLD libvirt.la
Cannot export virCgroupDetectMountsFromFile: symbol not defined
Cannot export virCgroupGetCpusetMemoryMigrate: symbol not defined
Cannot export virCgroupSetCpusetMemoryMigrate: symbol not defined
I "think" the following will resolve that (but I have no empirical
evidence since I don't have a cross-mingw environment to test this on)...
http://www.redhat.com/archives/libvir-list/2015-March/msg01480.html
John
9:14 a.m.
On Fri, Mar 27, 2015 at 02:12:04PM +0100, Peter Krempa wrote:
Since commit a39f69d2b libvirt would fail to start a VM if the
default cpu set
was specified and individual vcpus were pinned to cpus outside of that cpuset.
Peter Krempa (8):
qemu: cgroup: Store auto cpuset instead of re-creating it on demand
qemu: cgroup: Refactor setup for IOThread cgroups
qemu: cgroup: Properly set up vcpu pinning
qemu: cgroup: Use priv->autoCpuset instead of using
qemuPrepareCpumap()
qemu: cgroup: Rename qemuSetupCgroupEmulatorPin to
qemuSetupCgroupCpusetCpus
qemu: cgroup: Kill qemuSetupCgroupIOThreadsPin()
qemu: cgroup: Kill qemuSetupCgroupVcpuPin()
qemu: Copy bitmap in a sane way
src/qemu/qemu_cgroup.c | 150 +++++++++++++++---------------------------------
src/qemu/qemu_cgroup.h | 13 +----
src/qemu/qemu_domain.c | 1 +
src/qemu/qemu_domain.h | 3 +
src/qemu/qemu_driver.c | 21 +++----
src/qemu/qemu_process.c | 93 +++++++++---------------------
src/qemu/qemu_process.h | 2 -
7 files changed, 85 insertions(+), 198 deletions(-)
ACK series.
Nice cleanup, that will show the NUMA topology witch! [1]
Jan
[1] https://www.redhat.com/archives/libvir-list/2015-March/msg01581.html
3:21 a.m.
On Tue, Mar 31, 2015 at 16:14:53 +0200, Ján Tomko wrote:
On Fri, Mar 27, 2015 at 02:12:04PM +0100, Peter Krempa wrote:
> Since commit a39f69d2b libvirt would fail to start a VM if the default cpu set
> was specified and individual vcpus were pinned to cpus outside of that cpuset.
>
> Peter Krempa (8):
> qemu: cgroup: Store auto cpuset instead of re-creating it on demand
> qemu: cgroup: Refactor setup for IOThread cgroups
> qemu: cgroup: Properly set up vcpu pinning
> qemu: cgroup: Use priv->autoCpuset instead of using
> qemuPrepareCpumap()
> qemu: cgroup: Rename qemuSetupCgroupEmulatorPin to
> qemuSetupCgroupCpusetCpus
> qemu: cgroup: Kill qemuSetupCgroupIOThreadsPin()
> qemu: cgroup: Kill qemuSetupCgroupVcpuPin()
> qemu: Copy bitmap in a sane way
>
> src/qemu/qemu_cgroup.c | 150 +++++++++++++++---------------------------------
> src/qemu/qemu_cgroup.h | 13 +----
> src/qemu/qemu_domain.c | 1 +
> src/qemu/qemu_domain.h | 3 +
> src/qemu/qemu_driver.c | 21 +++----
> src/qemu/qemu_process.c | 93 +++++++++---------------------
> src/qemu/qemu_process.h | 2 -
> 7 files changed, 85 insertions(+), 198 deletions(-)
>
ACK series.
Thanks. Now that the release is out I've pushed the patches.
Peter
3521
days inactive
3527
days old
12 comments
4 participants
participants (4)
-
Eric Blake -
John Ferlan -
Ján Tomko -
Peter Krempa