+static char *
+cpu_freq(void)
+{
+ int freq;
+ FILE *fp;
+
+ fp = fopen("/sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq", "r");
+ if (fp == NULL) {
+ warn("Failed to open file /sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq");
+ return smprintf("%s", UNKNOWN_STR);
+ }
+ fscanf(fp, "%i", &freq);
+ fclose(fp);
+
+ return smprintf("%d", (freq + 500) / 1000);
+}
+