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NUMA: cleanup for numa related codes

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Intend to reduce the redundant code,use virNumaSetupMemoryPolicy
to replace virLXCControllerSetupNUMAPolicy and
qemuProcessInitNumaMemoryPolicy.

This patch also moves the numa related codes to the
file virnuma.c and virnuma.h

Signed-off-by: Gao feng <gaofeng@cn.fujitsu.com>
This commit is contained in:
Gao feng 2013-03-20 11:35:08 +08:00 committed by Osier Yang
parent 4755e863d1
commit 45e9d27ad8
9 changed files with 182 additions and 288 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

31
src/conf/domain_conf.c
View File

@ -690,11 +690,6 @@ VIR_ENUM_IMPL(virDomainTimerMode, VIR_DOMAIN_TIMER_MODE_LAST,
"paravirt",
"smpsafe");
VIR_ENUM_IMPL(virDomainNumatuneMemMode, VIR_DOMAIN_NUMATUNE_MEM_LAST,
"strict",
"preferred",
"interleave");
VIR_ENUM_IMPL(virDomainStartupPolicy, VIR_DOMAIN_STARTUP_POLICY_LAST,
"default",
"mandatory",
@ -709,12 +704,6 @@ VIR_ENUM_IMPL(virDomainDiskTray, VIR_DOMAIN_DISK_TRAY_LAST,
"closed",
"open");
VIR_ENUM_IMPL(virDomainNumatuneMemPlacementMode,
VIR_DOMAIN_NUMATUNE_MEM_PLACEMENT_MODE_LAST,
"default",
"static",
"auto");
VIR_ENUM_IMPL(virDomainRNGModel,
VIR_DOMAIN_RNG_MODEL_LAST,
"virtio");
@ -9852,7 +9841,7 @@ virDomainDefParseXML(virCapsPtr caps,
int placement_mode = 0;
if (placement) {
if ((placement_mode =
virDomainNumatuneMemPlacementModeTypeFromString(placement)) < 0) {
virNumaTuneMemPlacementModeTypeFromString(placement)) < 0) {
virReportError(VIR_ERR_XML_ERROR,
_("Unsupported memory placement "
"mode '%s'"), placement);
@ -9862,18 +9851,18 @@ virDomainDefParseXML(virCapsPtr caps,
VIR_FREE(placement);
} else if (def->numatune.memory.nodemask) {
/* Defaults to "static" if nodeset is specified. */
placement_mode = VIR_DOMAIN_NUMATUNE_MEM_PLACEMENT_MODE_STATIC;
placement_mode = VIR_NUMA_TUNE_MEM_PLACEMENT_MODE_STATIC;
} else {
/* Defaults to "placement" of <vcpu> if nodeset is
* not specified.
*/
if (def->placement_mode == VIR_DOMAIN_CPU_PLACEMENT_MODE_STATIC)
placement_mode = VIR_DOMAIN_NUMATUNE_MEM_PLACEMENT_MODE_STATIC;
placement_mode = VIR_NUMA_TUNE_MEM_PLACEMENT_MODE_STATIC;
else
placement_mode = VIR_DOMAIN_NUMATUNE_MEM_PLACEMENT_MODE_AUTO;
placement_mode = VIR_NUMA_TUNE_MEM_PLACEMENT_MODE_AUTO;
}
if (placement_mode == VIR_DOMAIN_NUMATUNE_MEM_PLACEMENT_MODE_STATIC &&
if (placement_mode == VIR_NUMA_TUNE_MEM_PLACEMENT_MODE_STATIC &&
!def->numatune.memory.nodemask) {
virReportError(VIR_ERR_XML_ERROR, "%s",
_("nodeset for NUMA memory tuning must be set "
@ -9882,13 +9871,13 @@ virDomainDefParseXML(virCapsPtr caps,
}
/* Ignore 'nodeset' if 'placement' is 'auto' finally */
if (placement_mode == VIR_DOMAIN_NUMATUNE_MEM_PLACEMENT_MODE_AUTO)
if (placement_mode == VIR_NUMA_TUNE_MEM_PLACEMENT_MODE_AUTO)
virBitmapFree(def->numatune.memory.nodemask);
/* Copy 'placement' of <numatune> to <vcpu> if its 'placement'
* is not specified and 'placement' of <numatune> is specified.
*/
if (placement_mode == VIR_DOMAIN_NUMATUNE_MEM_PLACEMENT_MODE_AUTO &&
if (placement_mode == VIR_NUMA_TUNE_MEM_PLACEMENT_MODE_AUTO &&
!def->cpumask)
def->placement_mode = VIR_DOMAIN_CPU_PLACEMENT_MODE_AUTO;
@ -9907,7 +9896,7 @@ virDomainDefParseXML(virCapsPtr caps,
* and 'placement' of <vcpu> is 'auto'.
*/
if (def->placement_mode == VIR_DOMAIN_CPU_PLACEMENT_MODE_AUTO) {
def->numatune.memory.placement_mode = VIR_DOMAIN_NUMATUNE_MEM_PLACEMENT_MODE_AUTO;
def->numatune.memory.placement_mode = VIR_NUMA_TUNE_MEM_PLACEMENT_MODE_AUTO;
def->numatune.memory.mode = VIR_DOMAIN_NUMATUNE_MEM_STRICT;
}
}
@ -14818,7 +14807,7 @@ virDomainDefFormatInternal(virDomainDefPtr def,
virBufferAsprintf(buf, " <memory mode='%s' ", mode);
if (def->numatune.memory.placement_mode ==
VIR_DOMAIN_NUMATUNE_MEM_PLACEMENT_MODE_STATIC) {
VIR_NUMA_TUNE_MEM_PLACEMENT_MODE_STATIC) {
nodemask = virBitmapFormat(def->numatune.memory.nodemask);
if (nodemask == NULL) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
@ -14829,7 +14818,7 @@ virDomainDefFormatInternal(virDomainDefPtr def,
virBufferAsprintf(buf, "nodeset='%s'/>\n", nodemask);
VIR_FREE(nodemask);
} else if (def->numatune.memory.placement_mode) {
placement = virDomainNumatuneMemPlacementModeTypeToString(def->numatune.memory.placement_mode);
placement = virNumaTuneMemPlacementModeTypeToString(def->numatune.memory.placement_mode);
virBufferAsprintf(buf, "placement='%s'/>\n", placement);
}
virBufferAddLit(buf, " </numatune>\n");

25
src/conf/domain_conf.h
View File

@ -47,6 +47,7 @@
# include "device_conf.h"
# include "virbitmap.h"
# include "virstoragefile.h"
# include "virnuma.h"
/* forward declarations of all device types, required by
* virDomainDeviceDef
@ -1605,14 +1606,6 @@ enum virDomainCpuPlacementMode {
VIR_DOMAIN_CPU_PLACEMENT_MODE_LAST
};
enum virDomainNumatuneMemPlacementMode {
VIR_DOMAIN_NUMATUNE_MEM_PLACEMENT_MODE_DEFAULT = 0,
VIR_DOMAIN_NUMATUNE_MEM_PLACEMENT_MODE_STATIC,
VIR_DOMAIN_NUMATUNE_MEM_PLACEMENT_MODE_AUTO,
VIR_DOMAIN_NUMATUNE_MEM_PLACEMENT_MODE_LAST
};
typedef struct _virDomainTimerCatchupDef virDomainTimerCatchupDef;
typedef virDomainTimerCatchupDef *virDomainTimerCatchupDefPtr;
struct _virDomainTimerCatchupDef {
@ -1701,18 +1694,6 @@ virDomainVcpuPinDefPtr virDomainVcpuPinFindByVcpu(virDomainVcpuPinDefPtr *def,
int nvcpupin,
int vcpu);
typedef struct _virDomainNumatuneDef virDomainNumatuneDef;
typedef virDomainNumatuneDef *virDomainNumatuneDefPtr;
struct _virDomainNumatuneDef {
struct {
virBitmapPtr nodemask;
int mode;
int placement_mode; /* enum virDomainNumatuneMemPlacementMode */
} memory;
/* Future NUMA tuning related stuff should go here. */
};
typedef struct _virBlkioDeviceWeight virBlkioDeviceWeight;
typedef virBlkioDeviceWeight *virBlkioDeviceWeightPtr;
struct _virBlkioDeviceWeight {
@ -1802,7 +1783,7 @@ struct _virDomainDef {
virDomainVcpuPinDefPtr emulatorpin;
} cputune;
virDomainNumatuneDef numatune;
virNumaTuneDef numatune;
/* These 3 are based on virDomainLifeCycleAction enum flags */
int onReboot;
@ -2397,8 +2378,6 @@ VIR_ENUM_DECL(virDomainGraphicsSpicePlaybackCompression)
VIR_ENUM_DECL(virDomainGraphicsSpiceStreamingMode)
VIR_ENUM_DECL(virDomainGraphicsSpiceClipboardCopypaste)
VIR_ENUM_DECL(virDomainGraphicsSpiceMouseMode)
VIR_ENUM_DECL(virDomainNumatuneMemMode)
VIR_ENUM_DECL(virDomainNumatuneMemPlacementMode)
VIR_ENUM_DECL(virDomainHyperv)
VIR_ENUM_DECL(virDomainRNGModel)
VIR_ENUM_DECL(virDomainRNGBackend)

9
src/libvirt_private.syms
View File

@ -252,10 +252,6 @@ virDomainNetRemove;
virDomainNetTypeToString;
virDomainNostateReasonTypeFromString;
virDomainNostateReasonTypeToString;
virDomainNumatuneMemModeTypeFromString;
virDomainNumatuneMemModeTypeToString;
virDomainNumatuneMemPlacementModeTypeFromString;
virDomainNumatuneMemPlacementModeTypeToString;
virDomainObjAssignDef;
virDomainObjCopyPersistentDef;
virDomainObjGetPersistentDef;
@ -1557,7 +1553,12 @@ virNodeSuspendGetTargetMask;
# util/virnuma.h
virDomainNumatuneMemModeTypeFromString;
virDomainNumatuneMemModeTypeToString;
virNumaGetAutoPlacementAdvice;
virNumaSetupMemoryPolicy;
virNumaTuneMemPlacementModeTypeFromString;
virNumaTuneMemPlacementModeTypeToString;
# util/virobject.h
virClassForObject;

116
src/lxc/lxc_controller.c
View File

@ -46,11 +46,6 @@
# include <cap-ng.h>
#endif
#if WITH_NUMACTL
# define NUMA_VERSION1_COMPATIBILITY 1
# include <numa.h>
#endif
#include "virerror.h"
#include "virlog.h"
#include "virutil.h"
@ -469,113 +464,6 @@ cleanup:
return ret;
}
#if WITH_NUMACTL
static int virLXCControllerSetupNUMAPolicy(virLXCControllerPtr ctrl,
virBitmapPtr nodemask)
{
nodemask_t mask;
int mode = -1;
int node = -1;
int ret = -1;
int i = 0;
int maxnode = 0;
bool warned = false;
virDomainNumatuneDef numatune = ctrl->def->numatune;
virBitmapPtr tmp_nodemask = NULL;
if (numatune.memory.placement_mode ==
VIR_DOMAIN_NUMATUNE_MEM_PLACEMENT_MODE_STATIC) {
if (!numatune.memory.nodemask)
return 0;
VIR_DEBUG("Set NUMA memory policy with specified nodeset");
tmp_nodemask = numatune.memory.nodemask;
} else if (numatune.memory.placement_mode ==
VIR_DOMAIN_NUMATUNE_MEM_PLACEMENT_MODE_AUTO) {
VIR_DEBUG("Set NUMA memory policy with advisory nodeset from numad");
tmp_nodemask = nodemask;
} else {
return 0;
}
VIR_DEBUG("Setting NUMA memory policy");
if (numa_available() < 0) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
"%s", _("Host kernel is not aware of NUMA."));
return -1;
}
maxnode = numa_max_node() + 1;
/* Convert nodemask to NUMA bitmask. */
nodemask_zero(&mask);
i = -1;
while ((i = virBitmapNextSetBit(tmp_nodemask, i)) >= 0) {
if (i > NUMA_NUM_NODES) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
_("Host cannot support NUMA node %d"), i);
return -1;
}
if (i > maxnode && !warned) {
VIR_WARN("nodeset is out of range, there is only %d NUMA "
"nodes on host", maxnode);
warned = true;
}
nodemask_set(&mask, i);
}
mode = ctrl->def->numatune.memory.mode;
if (mode == VIR_DOMAIN_NUMATUNE_MEM_STRICT) {
numa_set_bind_policy(1);
numa_set_membind(&mask);
numa_set_bind_policy(0);
} else if (mode == VIR_DOMAIN_NUMATUNE_MEM_PREFERRED) {
int nnodes = 0;
for (i = 0; i < NUMA_NUM_NODES; i++) {
if (nodemask_isset(&mask, i)) {
node = i;
nnodes++;
}
}
if (nnodes != 1) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
"%s", _("NUMA memory tuning in 'preferred' mode "
"only supports single node"));
goto cleanup;
}
numa_set_bind_policy(0);
numa_set_preferred(node);
} else if (mode == VIR_DOMAIN_NUMATUNE_MEM_INTERLEAVE) {
numa_set_interleave_mask(&mask);
} else {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
_("Unable to set NUMA policy %s"),
virDomainNumatuneMemModeTypeToString(mode));
goto cleanup;
}
ret = 0;
cleanup:
return ret;
}
#else
static int virLXCControllerSetupNUMAPolicy(virLXCControllerPtr ctrl,
virBitmapPtr nodemask ATTRIBUTE_UNUSED)
{
if (ctrl->def->numatune.memory.nodemask) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
_("NUMA policy is not available on this platform"));
return -1;
}
return 0;
}
#endif
/*
* To be run while still single threaded
@ -638,7 +526,7 @@ static int virLXCControllerGetNumadAdvice(virLXCControllerPtr ctrl,
if ((ctrl->def->placement_mode ==
VIR_DOMAIN_CPU_PLACEMENT_MODE_AUTO) ||
(ctrl->def->numatune.memory.placement_mode ==
VIR_DOMAIN_NUMATUNE_MEM_PLACEMENT_MODE_AUTO)) {
VIR_NUMA_TUNE_MEM_PLACEMENT_MODE_AUTO)) {
nodeset = virNumaGetAutoPlacementAdvice(ctrl->def->vcpus,
ctrl->def->mem.cur_balloon);
if (!nodeset)
@ -675,7 +563,7 @@ static int virLXCControllerSetupResourceLimits(virLXCControllerPtr ctrl,
int ret = -1;
if (virLXCControllerGetNumadAdvice(ctrl, &nodemask) < 0 ||
virLXCControllerSetupNUMAPolicy(ctrl, nodemask) < 0)
virNumaSetupMemoryPolicy(ctrl->def->numatune, nodemask) < 0)
goto cleanup;
if (virLXCControllerSetupCpuAffinity(ctrl) < 0)

4
src/qemu/qemu_cgroup.c
View File

@ -423,12 +423,12 @@ int qemuSetupCgroup(virQEMUDriverPtr driver,
if ((vm->def->numatune.memory.nodemask ||
(vm->def->numatune.memory.placement_mode ==
VIR_DOMAIN_NUMATUNE_MEM_PLACEMENT_MODE_AUTO)) &&
VIR_NUMA_TUNE_MEM_PLACEMENT_MODE_AUTO)) &&
vm->def->numatune.memory.mode == VIR_DOMAIN_NUMATUNE_MEM_STRICT &&
qemuCgroupControllerActive(driver, VIR_CGROUP_CONTROLLER_CPUSET)) {
char *mask = NULL;
if (vm->def->numatune.memory.placement_mode ==
VIR_DOMAIN_NUMATUNE_MEM_PLACEMENT_MODE_AUTO)
VIR_NUMA_TUNE_MEM_PLACEMENT_MODE_AUTO)
mask = virBitmapFormat(nodemask);
else
mask = virBitmapFormat(vm->def->numatune.memory.nodemask);

6
src/qemu/qemu_driver.c
View File

@ -7648,7 +7648,7 @@ qemuDomainSetNumaParameters(virDomainPtr dom,
virBitmapFree(vm->def->numatune.memory.nodemask);
vm->def->numatune.memory.placement_mode =
VIR_DOMAIN_NUMATUNE_MEM_PLACEMENT_MODE_STATIC;
VIR_NUMA_TUNE_MEM_PLACEMENT_MODE_STATIC;
vm->def->numatune.memory.nodemask = virBitmapNewCopy(nodeset);
}
@ -7657,7 +7657,7 @@ qemuDomainSetNumaParameters(virDomainPtr dom,
persistentDef->numatune.memory.nodemask = nodeset;
persistentDef->numatune.memory.placement_mode =
VIR_DOMAIN_NUMATUNE_MEM_PLACEMENT_MODE_STATIC;
VIR_NUMA_TUNE_MEM_PLACEMENT_MODE_STATIC;
nodeset = NULL;
}
virBitmapFree(nodeset);
@ -7667,7 +7667,7 @@ qemuDomainSetNumaParameters(virDomainPtr dom,
if (flags & VIR_DOMAIN_AFFECT_CONFIG) {
if (!persistentDef->numatune.memory.placement_mode)
persistentDef->numatune.memory.placement_mode =
VIR_DOMAIN_NUMATUNE_MEM_PLACEMENT_MODE_AUTO;
VIR_NUMA_TUNE_MEM_PLACEMENT_MODE_AUTO;
if (virDomainSaveConfig(cfg->configDir, persistentDef) < 0)
ret = -1;
}

123
src/qemu/qemu_process.c
View File

@ -45,11 +45,6 @@
#include "qemu_bridge_filter.h"
#include "qemu_migration.h"
#if WITH_NUMACTL
# define NUMA_VERSION1_COMPATIBILITY 1
# include <numa.h>
#endif
#include "datatypes.h"
#include "virlog.h"
#include "virerror.h"
@ -1791,120 +1786,6 @@ qemuProcessDetectVcpuPIDs(virQEMUDriverPtr driver,
}
/*
* Set NUMA memory policy for qemu process, to be run between
* fork/exec of QEMU only.
*/
#if WITH_NUMACTL
static int
qemuProcessInitNumaMemoryPolicy(virDomainObjPtr vm,
virBitmapPtr nodemask)
{
nodemask_t mask;
int mode = -1;
int node = -1;
int ret = -1;
int i = 0;
int maxnode = 0;
bool warned = false;
virDomainNumatuneDef numatune = vm->def->numatune;
virBitmapPtr tmp_nodemask = NULL;
if (numatune.memory.placement_mode ==
VIR_DOMAIN_NUMATUNE_MEM_PLACEMENT_MODE_STATIC) {
if (!numatune.memory.nodemask)
return 0;
VIR_DEBUG("Set NUMA memory policy with specified nodeset");
tmp_nodemask = numatune.memory.nodemask;
} else if (numatune.memory.placement_mode ==
VIR_DOMAIN_NUMATUNE_MEM_PLACEMENT_MODE_AUTO) {
VIR_DEBUG("Set NUMA memory policy with advisory nodeset from numad");
tmp_nodemask = nodemask;
} else {
return 0;
}
if (numa_available() < 0) {
virReportError(VIR_ERR_INTERNAL_ERROR,
"%s", _("Host kernel is not aware of NUMA."));
return -1;
}
maxnode = numa_max_node() + 1;
/* Convert nodemask to NUMA bitmask. */
nodemask_zero(&mask);
i = -1;
while ((i = virBitmapNextSetBit(tmp_nodemask, i)) >= 0) {
if (i > NUMA_NUM_NODES) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("Host cannot support NUMA node %d"), i);
return -1;
}
if (i > maxnode && !warned) {
VIR_WARN("nodeset is out of range, there is only %d NUMA "
"nodes on host", maxnode);
warned = true;
}
nodemask_set(&mask, i);
}
mode = numatune.memory.mode;
if (mode == VIR_DOMAIN_NUMATUNE_MEM_STRICT) {
numa_set_bind_policy(1);
numa_set_membind(&mask);
numa_set_bind_policy(0);
} else if (mode == VIR_DOMAIN_NUMATUNE_MEM_PREFERRED) {
int nnodes = 0;
for (i = 0; i < NUMA_NUM_NODES; i++) {
if (nodemask_isset(&mask, i)) {
node = i;
nnodes++;
}
}
if (nnodes != 1) {
virReportError(VIR_ERR_INTERNAL_ERROR,
"%s", _("NUMA memory tuning in 'preferred' mode "
"only supports single node"));
goto cleanup;
}
numa_set_bind_policy(0);
numa_set_preferred(node);
} else if (mode == VIR_DOMAIN_NUMATUNE_MEM_INTERLEAVE) {
numa_set_interleave_mask(&mask);
} else {
/* XXX: Shouldn't go here, as we already do checking when
* parsing domain XML.
*/
virReportError(VIR_ERR_XML_ERROR,
"%s", _("Invalid mode for memory NUMA tuning."));
goto cleanup;
}
ret = 0;
cleanup:
return ret;
}
#else
static int
qemuProcessInitNumaMemoryPolicy(virDomainObjPtr vm,
virBitmapPtr nodemask ATTRIBUTE_UNUSED)
{
if (vm->def->numatune.memory.nodemask) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("libvirt is compiled without NUMA tuning support"));
return -1;
}
return 0;
}
#endif
/* Helper to prepare cpumap for affinity setting, convert
* NUMA nodeset into cpuset if @nodemask is not NULL, otherwise
* just return a new allocated bitmap.
@ -2654,7 +2535,7 @@ static int qemuProcessHook(void *data)
qemuProcessInitCpuAffinity(h->driver, h->vm, h->nodemask) < 0)
goto cleanup;
if (qemuProcessInitNumaMemoryPolicy(h->vm, h->nodemask) < 0)
if (virNumaSetupMemoryPolicy(h->vm->def->numatune, h->nodemask) < 0)
goto cleanup;
ret = 0;
@ -3608,7 +3489,7 @@ int qemuProcessStart(virConnectPtr conn,
if ((vm->def->placement_mode ==
VIR_DOMAIN_CPU_PLACEMENT_MODE_AUTO) ||
(vm->def->numatune.memory.placement_mode ==
VIR_DOMAIN_NUMATUNE_MEM_PLACEMENT_MODE_AUTO)) {
VIR_NUMA_TUNE_MEM_PLACEMENT_MODE_AUTO)) {
nodeset = virNumaGetAutoPlacementAdvice(vm->def->vcpus,
vm->def->mem.cur_balloon);
if (!nodeset)

126
src/util/virnuma.c
View File

@ -21,12 +21,30 @@
#include <config.h>
#if WITH_NUMACTL
# define NUMA_VERSION1_COMPATIBILITY 1
# include <numa.h>
#endif
#include "virnuma.h"
#include "vircommand.h"
#include "virerror.h"
#include "virlog.h"
#define VIR_FROM_THIS VIR_FROM_NONE
VIR_ENUM_IMPL(virDomainNumatuneMemMode,
VIR_DOMAIN_NUMATUNE_MEM_LAST,
"strict",
"preferred",
"interleave");
VIR_ENUM_IMPL(virNumaTuneMemPlacementMode,
VIR_NUMA_TUNE_MEM_PLACEMENT_MODE_LAST,
"default",
"static",
"auto");
#if HAVE_NUMAD
char *
virNumaGetAutoPlacementAdvice(unsigned short vcpus,
@ -59,3 +77,111 @@ virNumaGetAutoPlacementAdvice(unsigned short vcpus ATTRIBUTE_UNUSED,
return NULL;
}
#endif
#if WITH_NUMACTL
int
virNumaSetupMemoryPolicy(virNumaTuneDef numatune,
virBitmapPtr nodemask)
{
nodemask_t mask;
int mode = -1;
int node = -1;
int ret = -1;
int i = 0;
int maxnode = 0;
bool warned = false;
virBitmapPtr tmp_nodemask = NULL;
if (numatune.memory.placement_mode ==
VIR_NUMA_TUNE_MEM_PLACEMENT_MODE_STATIC) {
if (!numatune.memory.nodemask)
return 0;
VIR_DEBUG("Set NUMA memory policy with specified nodeset");
tmp_nodemask = numatune.memory.nodemask;
} else if (numatune.memory.placement_mode ==
VIR_NUMA_TUNE_MEM_PLACEMENT_MODE_AUTO) {
VIR_DEBUG("Set NUMA memory policy with advisory nodeset from numad");
tmp_nodemask = nodemask;
} else {
return 0;
}
if (numa_available() < 0) {
virReportError(VIR_ERR_INTERNAL_ERROR,
"%s", _("Host kernel is not aware of NUMA."));
return -1;
}
maxnode = numa_max_node() + 1;
/* Convert nodemask to NUMA bitmask. */
nodemask_zero(&mask);
i = -1;
while ((i = virBitmapNextSetBit(tmp_nodemask, i)) >= 0) {
if (i > NUMA_NUM_NODES) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("Host cannot support NUMA node %d"), i);
return -1;
}
if (i > maxnode && !warned) {
VIR_WARN("nodeset is out of range, there is only %d NUMA "
"nodes on host", maxnode);
warned = true;
}
nodemask_set(&mask, i);
}
mode = numatune.memory.mode;
if (mode == VIR_DOMAIN_NUMATUNE_MEM_STRICT) {
numa_set_bind_policy(1);
numa_set_membind(&mask);
numa_set_bind_policy(0);
} else if (mode == VIR_DOMAIN_NUMATUNE_MEM_PREFERRED) {
int nnodes = 0;
for (i = 0; i < NUMA_NUM_NODES; i++) {
if (nodemask_isset(&mask, i)) {
node = i;
nnodes++;
}
}
if (nnodes != 1) {
virReportError(VIR_ERR_INTERNAL_ERROR,
"%s", _("NUMA memory tuning in 'preferred' mode "
"only supports single node"));
goto cleanup;
}
numa_set_bind_policy(0);
numa_set_preferred(node);
} else if (mode == VIR_DOMAIN_NUMATUNE_MEM_INTERLEAVE) {
numa_set_interleave_mask(&mask);
} else {
/* XXX: Shouldn't go here, as we already do checking when
* parsing domain XML.
*/
virReportError(VIR_ERR_XML_ERROR,
"%s", _("Invalid mode for memory NUMA tuning."));
goto cleanup;
}
ret = 0;
cleanup:
return ret;
}
#else
int
virNumaSetupMemoryPolicy(virNumaTuneDef numatune,
virBitmapPtr nodemask ATTRIBUTE_UNUSED)
{
if (numatune.memory.nodemask) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("libvirt is compiled without NUMA tuning support"));
return -1;
}
return 0;
}
#endif

30
src/util/virnuma.h
View File

@ -22,7 +22,37 @@
#ifndef __VIR_NUMA_H__
# define __VIR_NUMA_H__
# include "internal.h"
# include "virbitmap.h"
# include "virutil.h"
enum virNumaTuneMemPlacementMode {
VIR_NUMA_TUNE_MEM_PLACEMENT_MODE_DEFAULT = 0,
VIR_NUMA_TUNE_MEM_PLACEMENT_MODE_STATIC,
VIR_NUMA_TUNE_MEM_PLACEMENT_MODE_AUTO,
VIR_NUMA_TUNE_MEM_PLACEMENT_MODE_LAST
};
VIR_ENUM_DECL(virNumaTuneMemPlacementMode)
VIR_ENUM_DECL(virDomainNumatuneMemMode)
typedef struct _virNumaTuneDef virNumaTuneDef;
typedef virNumaTuneDef *virNumaTuneDefPtr;
struct _virNumaTuneDef {
struct {
virBitmapPtr nodemask;
int mode;
int placement_mode; /* enum virNumaTuneMemPlacementMode */
} memory;
/* Future NUMA tuning related stuff should go here. */
};
char *virNumaGetAutoPlacementAdvice(unsigned short vcups,
unsigned long long balloon);
int virNumaSetupMemoryPolicy(virNumaTuneDef numatune,
virBitmapPtr nodemask);
#endif /* __VIR_NUMA_H__ */