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vircgroup: Introduce virCgroupNewIOThread

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Add virCgroupNewIOThread() to mimic virCgroupNewVcpu() except the naming
scheme with use "iothread" rather than "vcpu".
This commit is contained in:
John Ferlan 2014-09-03 09:04:07 -04:00
parent 4cf6bfab4c
commit 3abb95cad4
3 changed files with 50 additions and 0 deletions
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1
src/libvirt_private.syms
View File

@ -1089,6 +1089,7 @@ virCgroupNewDetectMachine;
virCgroupNewDomainPartition;
virCgroupNewEmulator;
virCgroupNewIgnoreError;
virCgroupNewIOThread;
virCgroupNewMachine;
virCgroupNewPartition;
virCgroupNewSelf;

43
src/util/vircgroup.c
View File

@ -1492,6 +1492,49 @@ virCgroupNewEmulator(virCgroupPtr domain,
}
/**
* virCgroupNewIOThread:
*
* @domain: group for the domain
* @iothreadid: id of the iothread
* @create: true to create if not already existing
* @group: Pointer to returned virCgroupPtr
*
* Returns 0 on success, or -1 on error
*/
int
virCgroupNewIOThread(virCgroupPtr domain,
int iothreadid,
bool create,
virCgroupPtr *group)
{
int ret = -1;
char *name = NULL;
int controllers;
if (virAsprintf(&name, "iothread%d", iothreadid) < 0)
goto cleanup;
controllers = ((1 << VIR_CGROUP_CONTROLLER_CPU) |
(1 << VIR_CGROUP_CONTROLLER_CPUACCT) |
(1 << VIR_CGROUP_CONTROLLER_CPUSET));
if (virCgroupNew(-1, name, domain, controllers, group) < 0)
goto cleanup;
if (virCgroupMakeGroup(domain, *group, create, VIR_CGROUP_NONE) < 0) {
virCgroupRemove(*group);
virCgroupFree(group);
goto cleanup;
}
ret = 0;
cleanup:
VIR_FREE(name);
return ret;
}
int
virCgroupNewDetect(pid_t pid,
int controllers,

6
src/util/vircgroup.h
View File

@ -76,6 +76,12 @@ int virCgroupNewEmulator(virCgroupPtr domain,
virCgroupPtr *group)
ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(3);
int virCgroupNewIOThread(virCgroupPtr domain,
int iothreadid,
bool create,
virCgroupPtr *group)
ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(4);
int virCgroupNewDetect(pid_t pid,
int controllers,
virCgroupPtr *group);