unsigned int virNumaGetMaxCPUs(void) G_NO_INLINE;
-int virNumaGetNodeOfCPU(int cpu);
+int virNumaGetNodeOfCPU(int cpu) G_NO_INLINE;
int virNumaGetNodeCPUs(int node, virBitmap **cpus) G_NO_INLINE;
int virNumaCPUSetToNodeset(virBitmap *cpuset,
virBitmap **nodeset);
#include "internal.h"
#include "virnuma.h"
#include "virfile.h"
+#include "virstring.h"
#define VIR_FROM_THIS VIR_FROM_NONE
return virBitmapCountBits(*cpus);
}
+
+int
+virNumaGetNodeOfCPU(int cpu)
+{
+ g_autoptr(DIR) cpuDir = NULL;
+ g_autofree char *sysfs_cpu_path = NULL;
+ struct dirent *ent = NULL;
+ int dirErr = 0;
+
+ sysfs_cpu_path = g_strdup_printf("%s/cpu/cpu%d", SYSFS_SYSTEM_PATH, cpu);
+
+ if (virDirOpen(&cpuDir, sysfs_cpu_path) < 0)
+ return -1;
+
+ while ((dirErr = virDirRead(cpuDir, &ent, sysfs_cpu_path)) > 0) {
+ g_autofree char *entPath = NULL;
+ const char *number = NULL;
+ int node;
+
+ if (!(number = STRSKIP(ent->d_name, "node")))
+ continue;
+
+ entPath = g_strdup_printf("%s/%s", sysfs_cpu_path, ent->d_name);
+
+ if (!virFileIsLink(entPath))
+ continue;
+
+ if (virStrToLong_i(number, NULL, 10, &node) < 0) {
+ errno = EINVAL;
+ return -1;
+ }
+
+ return node;
+ }
+
+ if (dirErr < 0)
+ return -1;
+
+ errno = EINVAL;
+ return -1;
+}
projects / thirdparty / libvirt.git / commitdiff
