[v0.98][PPC] Basic support for topology detection

src/ppc/udev.c

@@ -0,0 +1,49 @@
+#include "udev.h"
+
+#define _PATH_TOPO_CORE_ID    "topology/core_id"
+#define _PATH_TOPO_PACKAGE_ID "topology/physical_package_id"
+
+bool fill_core_ids_from_sys(int *core_ids, int total_cores) {
+  int filelen;
+  char* buf;
+  char* end;
+  char path[128];
+
+  for(int i=0; i < total_cores; i++) {
+    sprintf(path, "%s%s/cpu%d/%s", _PATH_SYS_SYSTEM, _PATH_SYS_CPU, i, _PATH_TOPO_CORE_ID);
+    if((buf = read_file(path, &filelen)) == NULL) {
+      perror("open");
+      return false;
+    }
+
+    errno = 0;
+    core_ids[i] = strtol(buf, &end, 10);
+    if(errno != 0) {
+      perror("strtol");
+      return false;
+    }
+    free(buf);
+  }
+
+  return true;
+}
+
+bool fill_package_ids_from_sys(int* package_ids, int total_cores) {
+  int filelen;
+  char* buf;
+  char* end;
+  char path[128];
+
+  for(int i=0; i < total_cores; i++) {
+    sprintf(path, "%s%s/cpu%d/%s", _PATH_SYS_SYSTEM, _PATH_SYS_CPU, i, _PATH_TOPO_PACKAGE_ID);
+    buf = read_file(path, &filelen);
+
+    errno = 0;
+    package_ids[i] = strtol(buf, &end, 10);
+    if(errno != 0) {
+      perror("strtol");
+      return -1;
+    }
+    free(buf);
+  }
+}