Index: qemu/vl.c
@@ -596,8 +596,43 @@
 #endif
 }
 
+uint64_t get_tps_from_proc()
+{
+    FILE *fp;
+    char buf[30];
+    double cpu_mhz;
+
+    if (!(fp = fopen("/proc/cpuinfo", "r")))
+        return 0;
+
+    /* find wanted line */
+    while (fgets(buf, 30, fp) != NULL)
+        if (!strncmp(buf, "cpu MHz", 7))
+            break;
+
+    /* line not found? */
+    if (feof(fp)) {
+        fclose(fp);
+        return 0;
+    }
+    fclose(fp);
+
+    /* put 'cpu MHz' value into cpu_mhz */
+    if (!sscanf(&buf[9], ": %lf", &cpu_mhz))
+        return 0;
+
+    /* return estimated ticks/sec value */
+    return (uint64_t)(cpu_mhz * 1000000.0);
+}
+
 void cpu_calibrate_ticks(void)
 {
+    if (!(ticks_per_sec = get_tps_from_proc()))
+        fprintf(stderr, "Could not obtain ticks/sec. from /proc/cpuinfo\n \
+                        resorting to regular method (tsc)\n");
+    else /* value obtained, skip below */
+        return;
+
     int64_t usec, ticks;
 
     usec = get_clock();