#include "asm/bug.h"
static int max_cpu_num;
+static int max_present_cpu_num;
static int max_node_num;
static int *cpunode_map;
/* set up default */
max_cpu_num = 4096;
+ max_present_cpu_num = 4096;
mnt = sysfs__mountpoint();
if (!mnt)
}
ret = get_max_num(path, &max_cpu_num);
+ if (ret)
+ goto out;
+
+ /* get the highest present cpu number for a sparse allocation */
+ ret = snprintf(path, PATH_MAX, "%s/devices/system/cpu/present", mnt);
+ if (ret == PATH_MAX) {
+ pr_err("sysfs path crossed PATH_MAX(%d) size\n", PATH_MAX);
+ goto out;
+ }
+
+ ret = get_max_num(path, &max_present_cpu_num);
out:
if (ret)
return max_cpu_num;
}
+int cpu__max_present_cpu(void)
+{
+ if (unlikely(!max_present_cpu_num))
+ set_max_cpu_num();
+
+ return max_present_cpu_num;
+}
+
+
int cpu__get_node(int cpu)
{
if (unlikely(cpunode_map == NULL)) {