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add interface virCgroupGetMemSwapUsage

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virCgroupGetMemSwapUsage is used to get container's swap usage,
with this interface,we can get swap usage in fuse filesystem.

Signed-off-by: Gao feng <gaofeng@cn.fujitsu.com>
This commit is contained in:
Gao feng 2012-11-12 15:02:25 +08:00 committed by Daniel P. Berrange
parent 2a596dac5e
commit 4d4f371e09
3 changed files with 22 additions and 0 deletions
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1
src/libvirt_private.syms
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@ -98,6 +98,7 @@ virCgroupGetCpuacctUsage;
virCgroupGetCpusetCpus;
virCgroupGetCpusetMems;
virCgroupGetFreezerState;
virCgroupGetMemSwapUsage;
virCgroupGetMemSwapHardLimit;
virCgroupGetMemoryHardLimit;
virCgroupGetMemorySoftLimit;

20
src/util/cgroup.c
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@ -1370,6 +1370,26 @@ int virCgroupGetMemSwapHardLimit(virCgroupPtr group, unsigned long long *kb)
return ret;
}
/**
* virCgroupGetMemSwapUsage:
*
* @group: The cgroup to get mem+swap usage for
* @kb: The mem+swap amount in kilobytes
*
* Returns: 0 on success
*/
int virCgroupGetMemSwapUsage(virCgroupPtr group, unsigned long long *kb)
{
long long unsigned int usage_in_bytes;
int ret;
ret = virCgroupGetValueU64(group,
VIR_CGROUP_CONTROLLER_MEMORY,
"memory.memsw.usage_in_bytes", &usage_in_bytes);
if (ret == 0)
*kb = usage_in_bytes >> 10;
return ret;
}
/**
* virCgroupSetCpusetMems:
*

1
src/util/cgroup.h
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@ -92,6 +92,7 @@ int virCgroupSetMemorySoftLimit(virCgroupPtr group, unsigned long long kb);
int virCgroupGetMemorySoftLimit(virCgroupPtr group, unsigned long long *kb);
int virCgroupSetMemSwapHardLimit(virCgroupPtr group, unsigned long long kb);
int virCgroupGetMemSwapHardLimit(virCgroupPtr group, unsigned long long *kb);
int virCgroupGetMemSwapUsage(virCgroupPtr group, unsigned long long *kb);
enum {
VIR_CGROUP_DEVICE_READ = 1,