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vircgroup: Introduce virCgroupControllerAvailable

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This new internal API checks if given CGroup controller is
available.  It is going to be needed later when we need to make a
decision whether pin domain memory onto NUMA nodes using cpuset
CGroup controller or using numa_set_membind().

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
This commit is contained in:
Michal Privoznik
2015-03-31 11:39:13 +02:00
parent cfcdf5ff01
commit d65acbde35
4 changed files with 52 additions and 0 deletions
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31
tests/vircgrouptest.c
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@@ -586,6 +586,34 @@ static int testCgroupAvailable(const void *args)
return 0;
}
static int testCgroupControllerAvailable(const void *args ATTRIBUTE_UNUSED)
{
int ret = 0;
# define CHECK_CONTROLLER(c, present) \
if ((present && !virCgroupControllerAvailable(c)) || \
(!present && virCgroupControllerAvailable(c))) { \
fprintf(stderr, present ? \
"Expected controller %s not available\n" : \
"Unexpected controller %s available\n", #c); \
ret = -1; \
}
CHECK_CONTROLLER(VIR_CGROUP_CONTROLLER_CPU, true)
CHECK_CONTROLLER(VIR_CGROUP_CONTROLLER_CPUACCT, true)
CHECK_CONTROLLER(VIR_CGROUP_CONTROLLER_CPUSET, true)
CHECK_CONTROLLER(VIR_CGROUP_CONTROLLER_MEMORY, true)
CHECK_CONTROLLER(VIR_CGROUP_CONTROLLER_DEVICES, false)
CHECK_CONTROLLER(VIR_CGROUP_CONTROLLER_FREEZER, true)
CHECK_CONTROLLER(VIR_CGROUP_CONTROLLER_BLKIO, true)
CHECK_CONTROLLER(VIR_CGROUP_CONTROLLER_NET_CLS, false)
CHECK_CONTROLLER(VIR_CGROUP_CONTROLLER_PERF_EVENT, false)
CHECK_CONTROLLER(VIR_CGROUP_CONTROLLER_SYSTEMD, true)
# undef CHECK_CONTROLLER
return ret;
}
static int testCgroupGetPercpuStats(const void *args ATTRIBUTE_UNUSED)
{
virCgroupPtr cgroup = NULL;
@@ -886,6 +914,9 @@ mymain(void)
if (virtTestRun("Cgroup available", testCgroupAvailable, (void*)0x1) < 0)
ret = -1;
if (virtTestRun("Cgroup controller available", testCgroupControllerAvailable, NULL) < 0)
ret = -1;
if (virtTestRun("virCgroupGetBlkioIoServiced works", testCgroupGetBlkioIoServiced, NULL) < 0)
ret = -1;