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nodeinfo: add FreeBSD support

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Uses sysctl(3) interface to obtain CPU and memory information on FreeBSD
This commit is contained in:
Roman Bogorodskiy 2012-12-17 22:12:44 +04:00 committed by Peter Krempa
parent dc068e35c0
commit b370cd2978
1 changed files with 61 additions and 1 deletions
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62
src/nodeinfo.c
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@ -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"
@ -54,6 +59,23 @@
#define VIR_FROM_THIS VIR_FROM_NONE
#ifdef __FreeBSD__
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) {
virReportSystemError(errno, "%s", _("Cannot obtain CPU count"));
return -1;
}
return ncpu;
}
#endif
#ifdef __linux__
# define CPUINFO_PATH "/proc/cpuinfo"
# define SYSFS_SYSTEM_PATH "/sys/devices/system"
@ -870,6 +892,42 @@ cleanup:
VIR_FORCE_FCLOSE(cpuinfo);
return ret;
}
#elif defined(__FreeBSD__)
{
nodeinfo->nodes = 1;
nodeinfo->sockets = 1;
nodeinfo->threads = 1;
nodeinfo->cpus = freebsdNodeGetCPUCount();
if (nodeinfo->cpus == -1)
return -1;
nodeinfo->cores = nodeinfo->cpus;
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) {
virReportSystemError(errno, "%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) {
virReportSystemError(errno, "%s", _("cannot obtain memory size"));
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",
@ -977,7 +1035,7 @@ 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
@ -1007,6 +1065,8 @@ nodeGetCPUCount(void)
VIR_FREE(cpupath);
return i;
#elif defined(__FreeBSD__)
return freebsdNodeGetCPUCount();
#else
virReportError(VIR_ERR_NO_SUPPORT, "%s",
_("host cpu counting not implemented on this platform"));