[libvirt] [PATCH v2 2/7] nodeinfo: Rename nodeGetFreeMemory to nodeGetMemory
Michal Privoznik
mprivozn at redhat.com
Mon Jun 16 15:08:25 UTC 2014
For future work we want to info for not only the free memory but
overall memory size too. That's why the function must have new
signature too.
Signed-off-by: Michal Privoznik <mprivozn at redhat.com>
---
src/bhyve/bhyve_driver.c | 7 +++-
src/libvirt_private.syms | 2 +-
src/lxc/lxc_driver.c | 7 +++-
src/nodeinfo.c | 96 +++++++++++++++++++++++++++++++++-------------
src/nodeinfo.h | 3 +-
src/openvz/openvz_driver.c | 5 ++-
src/qemu/qemu_driver.c | 7 +++-
src/uml/uml_driver.c | 7 +++-
src/vbox/vbox_tmpl.c | 5 ++-
9 files changed, 105 insertions(+), 34 deletions(-)
diff --git a/src/bhyve/bhyve_driver.c b/src/bhyve/bhyve_driver.c
index 89f73ff..bb9bcb7 100644
--- a/src/bhyve/bhyve_driver.c
+++ b/src/bhyve/bhyve_driver.c
@@ -1244,10 +1244,15 @@ bhyveConnectGetMaxVcpus(virConnectPtr conn ATTRIBUTE_UNUSED,
static unsigned long long
bhyveNodeGetFreeMemory(virConnectPtr conn)
{
+ unsigned long long freeMem;
+
if (virNodeGetFreeMemoryEnsureACL(conn) < 0)
return 0;
- return nodeGetFreeMemory();
+ if (nodeGetMemory(NULL, &freeMem) < 0)
+ return 0;
+
+ return freeMem;
}
static int
diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms
index 946b264..18fde54 100644
--- a/src/libvirt_private.syms
+++ b/src/libvirt_private.syms
@@ -875,8 +875,8 @@ nodeGetCPUBitmap;
nodeGetCPUCount;
nodeGetCPUMap;
nodeGetCPUStats;
-nodeGetFreeMemory;
nodeGetInfo;
+nodeGetMemory;
nodeGetMemoryParameters;
nodeGetMemoryStats;
nodeSetMemoryParameters;
diff --git a/src/lxc/lxc_driver.c b/src/lxc/lxc_driver.c
index d2852a7..ab227d0 100644
--- a/src/lxc/lxc_driver.c
+++ b/src/lxc/lxc_driver.c
@@ -5477,10 +5477,15 @@ lxcNodeGetCellsFreeMemory(virConnectPtr conn,
static unsigned long long
lxcNodeGetFreeMemory(virConnectPtr conn)
{
+ unsigned long long freeMem;
+
if (virNodeGetFreeMemoryEnsureACL(conn) < 0)
return 0;
- return nodeGetFreeMemory();
+ if (nodeGetMemory(NULL, &freeMem) < 0)
+ return 0;
+
+ return freeMem;
}
diff --git a/src/nodeinfo.c b/src/nodeinfo.c
index 5332ede..fd831b4 100644
--- a/src/nodeinfo.c
+++ b/src/nodeinfo.c
@@ -1683,37 +1683,66 @@ nodeGetCellsFreeMemoryFake(unsigned long long *freeMems,
return 1;
}
-static unsigned long long
-nodeGetFreeMemoryFake(void)
+static int
+nodeGetMemoryFake(unsigned long long *mem,
+ unsigned long long *freeMem)
{
+ int ret = -1;
+
#if defined(__FreeBSD__)
unsigned long pagesize = getpagesize();
u_int value;
size_t value_size = sizeof(value);
- unsigned long long freemem;
- if (sysctlbyname("vm.stats.vm.v_free_count", &value,
- &value_size, NULL, 0) < 0) {
- virReportSystemError(errno, "%s",
- _("sysctl failed for vm.stats.vm.v_free_count"));
- return 0;
+ if (mem) {
+ if (sysctlbyname("vm.stats.vm.v_page_count", &value,
+ &value_size, NULL, 0) < 0) {
+ virReportSystemError(errno, "%s",
+ _("sysctl failed for vm.stats.vm.v_page_count"));
+ goto cleanup;
+ }
+ *mem = value * (unsigned long long)pagesize;
}
- freemem = value * (unsigned long long)pagesize;
+ if (freeMem) {
+ if (sysctlbyname("vm.stats.vm.v_free_count", &value,
+ &value_size, NULL, 0) < 0) {
+ virReportSystemError(errno, "%s",
+ _("sysctl failed for vm.stats.vm.v_free_count"));
+ goto cleanup;
+ }
+
+ *freeMem = value * (unsigned long long)pagesize;
+ }
- return freemem;
#else
- double avail = physmem_available();
- unsigned long long ret;
+ if (mem) {
+ double total = physmem_total();
+ if (!total) {
+ virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
+ _("Cannot determine free memory"));
+ goto cleanup;
+ }
- if (!(ret = (unsigned long long)avail)) {
- virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
- _("Cannot determine free memory"));
- return 0;
+ *mem = (unsigned long long) total;
}
- return ret;
+ if (freeMem) {
+ double avail = physmem_available();
+
+ if (!avail) {
+ virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
+ _("Cannot determine free memory"));
+ goto cleanup;
+ }
+
+ *freeMem = (unsigned long long) avail;
+ }
#endif
+
+ ret = 0;
+ cleanup:
+ return ret;
}
/* returns 1 on success, 0 if the detection failed and -1 on hard error */
@@ -1914,25 +1943,40 @@ nodeGetCellsFreeMemory(unsigned long long *freeMems,
return ret;
}
-unsigned long long
-nodeGetFreeMemory(void)
+int
+nodeGetMemory(unsigned long long *mem,
+ unsigned long long *freeMem)
{
- unsigned long long mem;
- unsigned long long freeMem = 0;
int max_node;
int n;
+ if (mem)
+ *mem = 0;
+
+ if (freeMem)
+ *freeMem = 0;
+
if (!virNumaIsAvailable())
- return nodeGetFreeMemoryFake();
+ return nodeGetMemoryFake(mem, freeMem);
if ((max_node = virNumaGetMaxNode()) < 0)
- return 0;
+ return -1;
for (n = 0; n <= max_node; n++) {
- virNumaGetNodeMemory(n, NULL, &mem);
+ unsigned long long tmp_mem = 0, tmp_freeMem = 0;
- freeMem += mem;
+ if (!virNumaNodeIsAvailable(n))
+ continue;
+
+ if (virNumaGetNodeMemory(n, &tmp_mem, &tmp_freeMem) < 0)
+ return -1;
+
+ if (mem)
+ *mem += tmp_mem;
+
+ if (freeMem)
+ *freeMem += tmp_freeMem;
}
- return freeMem;
+ return 0;
}
diff --git a/src/nodeinfo.h b/src/nodeinfo.h
index c81fcbb..e7ec144 100644
--- a/src/nodeinfo.h
+++ b/src/nodeinfo.h
@@ -40,7 +40,8 @@ int nodeGetMemoryStats(int cellNum,
int nodeGetCellsFreeMemory(unsigned long long *freeMems,
int startCell,
int maxCells);
-unsigned long long nodeGetFreeMemory(void);
+int nodeGetMemory(unsigned long long *mem,
+ unsigned long long *freeMem);
virBitmapPtr nodeGetCPUBitmap(int *max_id);
int nodeGetCPUCount(void);
diff --git a/src/openvz/openvz_driver.c b/src/openvz/openvz_driver.c
index 87df2a7..4c815ed 100644
--- a/src/openvz/openvz_driver.c
+++ b/src/openvz/openvz_driver.c
@@ -2180,7 +2180,10 @@ openvzNodeGetCellsFreeMemory(virConnectPtr conn ATTRIBUTE_UNUSED,
static unsigned long long
openvzNodeGetFreeMemory(virConnectPtr conn ATTRIBUTE_UNUSED)
{
- return nodeGetFreeMemory();
+ unsigned long long freeMem;
+ if (nodeGetMemory(NULL, &freeMem) < 0)
+ return 0;
+ return freeMem;
}
diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c
index 7bf2020..88051c9 100644
--- a/src/qemu/qemu_driver.c
+++ b/src/qemu/qemu_driver.c
@@ -16602,10 +16602,15 @@ qemuNodeGetCellsFreeMemory(virConnectPtr conn,
static unsigned long long
qemuNodeGetFreeMemory(virConnectPtr conn)
{
+ unsigned long long freeMem;
+
if (virNodeGetFreeMemoryEnsureACL(conn) < 0)
return 0;
- return nodeGetFreeMemory();
+ if (nodeGetMemory(NULL, &freeMem) < 0)
+ return 0;
+
+ return freeMem;
}
diff --git a/src/uml/uml_driver.c b/src/uml/uml_driver.c
index 1e0ec0e..a5e9ea8 100644
--- a/src/uml/uml_driver.c
+++ b/src/uml/uml_driver.c
@@ -2806,10 +2806,15 @@ umlNodeGetCellsFreeMemory(virConnectPtr conn,
static unsigned long long
umlNodeGetFreeMemory(virConnectPtr conn)
{
+ unsigned long long freeMem;
+
if (virNodeGetFreeMemoryEnsureACL(conn) < 0)
return 0;
- return nodeGetFreeMemory();
+ if (nodeGetMemory(NULL, &freeMem) < 0)
+ return 0;
+
+ return freeMem;
}
diff --git a/src/vbox/vbox_tmpl.c b/src/vbox/vbox_tmpl.c
index 1ed2729..66e933a 100644
--- a/src/vbox/vbox_tmpl.c
+++ b/src/vbox/vbox_tmpl.c
@@ -11468,7 +11468,10 @@ vboxNodeGetCellsFreeMemory(virConnectPtr conn ATTRIBUTE_UNUSED,
static unsigned long long
vboxNodeGetFreeMemory(virConnectPtr conn ATTRIBUTE_UNUSED)
{
- return nodeGetFreeMemory();
+ unsigned long long freeMem;
+ if (nodeGetMemory(NULL, &freeMem) < 0)
+ return 0;
+ return freeMem;
}
--
1.8.5.5
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