[libvirt] [PATCH 1/2] FreeBSD: add nodeinfo support.
Uses sysctl(3) interface to obtain CPU and memory information.
---
src/nodeinfo.c | 75 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++-
1 file changed, 74 insertions(+), 1 deletion(-)
diff --git a/src/nodeinfo.c b/src/nodeinfo.c
index 096000b..f6fdf90 100644
--- a/src/nodeinfo.c
+++ b/src/nodeinfo.c
@@ -38,6 +38,11 @@
# include <numa.h>
#endif
+#ifdef __FreeBSD__
+# include <sys/types.h>
+# include <sys/sysctl.h>
+#endif
+
#include "c-ctype.h"
#include "memory.h"
#include "nodeinfo.h"
@@ -53,6 +58,24 @@
#define VIR_FROM_THIS VIR_FROM_NONE
+#ifdef __FreeBSD__
+static int freebsdNodeGetCPUCount(void);
+
+static int
+freebsdNodeGetCPUCount(void)
+{
+ int ncpu_mib[2] = { CTL_HW, HW_NCPU };
+ unsigned long ncpu;
+ size_t ncpu_len = sizeof(ncpu);
+
+ if (sysctl(ncpu_mib, 2, &ncpu, &ncpu_len, NULL, 0) == -1) {
+ return -1;
+ }
+
+ return ncpu;
+}
+#endif
+
#ifdef __linux__
# define CPUINFO_PATH "/proc/cpuinfo"
# define SYSFS_SYSTEM_PATH "/sys/devices/system"
@@ -871,6 +894,46 @@ cleanup:
VIR_FORCE_FCLOSE(cpuinfo);
return ret;
}
+#elif defined(__FreeBSD__)
+ {
+ nodeinfo->nodes = 1;
+ nodeinfo->sockets = 1;
+ nodeinfo->cores = 1;
+ nodeinfo->threads = 1;
+
+ nodeinfo->cpus = freebsdNodeGetCPUCount();
+
+ if (nodeinfo->cpus == -1) {
+ virReportError(VIR_ERR_NO_SUPPORT, "%s",
+ _("cannot obtain cpu count"));
+ }
+
+ unsigned long cpu_freq;
+ size_t cpu_freq_len = sizeof(cpu_freq);
+
+ if (sysctlbyname("dev.cpu.0.freq", &cpu_freq, &cpu_freq_len, NULL,
0) < 0) {
+ virReportError(VIR_ERR_NO_SUPPORT, "%s",
+ _("cannot obtain cpu freq"));
+ return -1;
+ }
+
+ nodeinfo->mhz = cpu_freq;
+
+ /* get memory information */
+ int mib[2] = { CTL_HW, HW_PHYSMEM };
+ unsigned long physmem;
+ size_t len = sizeof(physmem);
+
+ if (sysctl(mib, 2, &physmem, &len, NULL, 0) == -1) {
+ virReportError(VIR_ERR_NO_SUPPORT, "%s",
+ _("cannot obtain memory count"));
+ return -1;
+ }
+
+ nodeinfo->memory = (unsigned long)(physmem / 1024);
+
+ return 0;
+ }
#else
/* XXX Solaris will need an impl later if they port QEMU driver */
virReportError(VIR_ERR_NO_SUPPORT, "%s",
@@ -978,7 +1041,7 @@ int nodeGetMemoryStats(virConnectPtr conn ATTRIBUTE_UNUSED,
int
nodeGetCPUCount(void)
{
-#ifdef __linux__
+#if defined(__linux__)
/* To support older kernels that lack cpu/present, such as 2.6.18
* in RHEL5, we fall back to count cpu/cpuNN entries; this assumes
* that such kernels also lack hotplug, and therefore cpu/cpuNN
@@ -1008,6 +1071,16 @@ nodeGetCPUCount(void)
VIR_FREE(cpupath);
return i;
+#elif defined(__FreeBSD__)
+ int cpu_count = -1;
+
+ cpu_count = freebsdNodeGetCPUCount();
+ if (cpu_count == -1) {
+ virReportError(VIR_ERR_NO_SUPPORT, "%s",
+ _("cannot obtain cpu count"));
+ }
+
+ return cpu_count;
#else
virReportError(VIR_ERR_NO_SUPPORT, "%s",
_("host cpu counting not implemented on this platform"));
--
1.8.0