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lxc: suspend/resume support

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* src/conf/domain_conf.c: Don't assume all virDomainObjPtr have
  a non-NULL monitor_chr field in virDomainObjFormat.
* src/lxc/lxc_driver.c: Implement suspend/resume driver APis
* src/util/cgroup.c, src/util/cgroup.h: Support the 'freezer'
  cgroup controller
* src/libvirt_private.syms: Export virCgroupSetFreezerState
  and virCgroupGetFreezerState
This commit is contained in:
Ryota Ozaki
2009-09-21 23:31:22 +09:00
committed by Daniel P. Berrange
parent 0c85095e46
commit c8c9ef2757
5 changed files with 253 additions and 15 deletions
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23
src/util/cgroup.c
View File

@@ -32,7 +32,8 @@
#define CGROUP_MAX_VAL 512
VIR_ENUM_IMPL(virCgroupController, VIR_CGROUP_CONTROLLER_LAST,
"cpu", "cpuacct", "cpuset", "memory", "devices");
"cpu", "cpuacct", "cpuset", "memory", "devices",
"freezer");
struct virCgroupController {
int type;
@@ -896,3 +897,23 @@ int virCgroupGetCpuacctUsage(virCgroupPtr group, unsigned long long *usage)
VIR_CGROUP_CONTROLLER_CPUACCT,
"cpuacct.usage", (uint64_t *)usage);
}
int virCgroupSetFreezerState(virCgroupPtr group, const char *state)
{
return virCgroupSetValueStr(group,
VIR_CGROUP_CONTROLLER_CPU,
"freezer.state", state);
}
int virCgroupGetFreezerState(virCgroupPtr group, char **state)
{
int ret;
ret = virCgroupGetValueStr(group,
VIR_CGROUP_CONTROLLER_CPU,
"freezer.state", state);
if (ret == 0) {
char *p = strchr(*state, '\n');
if (p) *p = '\0';
}
return ret;
}

4
src/util/cgroup.h
View File

@@ -21,6 +21,7 @@ enum {
VIR_CGROUP_CONTROLLER_CPUSET,
VIR_CGROUP_CONTROLLER_MEMORY,
VIR_CGROUP_CONTROLLER_DEVICES,
VIR_CGROUP_CONTROLLER_FREEZER,
VIR_CGROUP_CONTROLLER_LAST
};
@@ -68,6 +69,9 @@ int virCgroupGetCpuShares(virCgroupPtr group, unsigned long long *shares);
int virCgroupGetCpuacctUsage(virCgroupPtr group, unsigned long long *usage);
int virCgroupSetFreezerState(virCgroupPtr group, const char *state);
int virCgroupGetFreezerState(virCgroupPtr group, char **state);
int virCgroupRemove(virCgroupPtr group);
void virCgroupFree(virCgroupPtr *group);