[libvirt] [PATCH 6/6] lxc: Introduce method lxcDomainGetBalloonStats().
This method is responsible to fetch all Balloon Memory Stats and store
data into virDomainStatsRecordPtr structure.
Signed-off-by: Julio Faracco <jcfaracco(a)gmail.com>
---
src/lxc/lxc_driver.c | 71 ++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 71 insertions(+)
diff --git a/src/lxc/lxc_driver.c b/src/lxc/lxc_driver.c
index 1190d67a81..ea48214073 100644
--- a/src/lxc/lxc_driver.c
+++ b/src/lxc/lxc_driver.c
@@ -2876,6 +2876,77 @@ lxcDomainGetBlkioParameters(virDomainPtr dom,
return ret;
}
+static int
+lxcDomainGetBalloonStats(virDomainObjPtr dom,
+ virDomainStatsRecordPtr record,
+ int *maxparams)
+{
+ virLXCDomainObjPrivatePtr priv = dom->privateData;
+ virDomainMemoryStatStruct stats[VIR_DOMAIN_MEMORY_STAT_NR];
+ unsigned long long swap_usage;
+ unsigned long mem_usage;
+ size_t i;
+ int ret = -1;
+
+ if (virTypedParamsAddULLong(&record->params,
+ &record->nparams,
+ maxparams,
+ "balloon.maximum",
+ virDomainDefGetMemoryTotal(dom->def)) < 0)
+ return -1;
+
+ if (virTypedParamsAddULLong(&record->params,
+ &record->nparams,
+ maxparams,
+ "balloon.current",
+ virDomainDefGetMemoryTotal(dom->def)) < 0)
+ return -1;
+
+ if (virCgroupGetMemSwapUsage(priv->cgroup, &swap_usage) < 0)
+ return -1;
+
+ if (virCgroupGetMemoryUsage(priv->cgroup, &mem_usage) < 0)
+ return -1;
+
+ ret = 0;
+ if (ret < *maxparams) {
+ stats[ret].tag = VIR_DOMAIN_MEMORY_STAT_ACTUAL_BALLOON;
+ stats[ret].val = dom->def->mem.cur_balloon;
+ ret++;
+ }
+ if (ret < *maxparams) {
+ stats[ret].tag = VIR_DOMAIN_MEMORY_STAT_SWAP_IN;
+ stats[ret].val = swap_usage;
+ ret++;
+ }
+ if (ret < *maxparams) {
+ stats[ret].tag = VIR_DOMAIN_MEMORY_STAT_RSS;
+ stats[ret].val = mem_usage;
+ ret++;
+ }
+
+#define LXC_STORE_MEM_RECORD(TAG, NAME) \
+ if (stats[i].tag == VIR_DOMAIN_MEMORY_STAT_ ##TAG) \
+ if (virTypedParamsAddULLong(&record->params, \
+ &record->nparams, \
+ maxparams, \
+ "balloon." NAME, \
+ stats[i].val) < 0) \
+ return -1;
+
+ for (i = 0; i < ret; i++) {
+ LXC_STORE_MEM_RECORD(SWAP_IN, "swap_in")
+ LXC_STORE_MEM_RECORD(SWAP_OUT, "swap_out")
+ LXC_STORE_MEM_RECORD(MAJOR_FAULT, "major_fault")
+ LXC_STORE_MEM_RECORD(MINOR_FAULT, "minor_fault")
+ LXC_STORE_MEM_RECORD(AVAILABLE, "available")
+ LXC_STORE_MEM_RECORD(UNUSED, "unused")
+ }
+
+#undef LXC_STORE_MEM_RECORD
+
+ return 0;
+}
static int
lxcDomainInterfaceStats(virDomainPtr dom,
--
2.19.1