tools/perf/util/units.c

   1 #include "units.h"
   2 #include <inttypes.h>
   3 #include <linux/kernel.h>
   4 #include <linux/time64.h>
   5
   6 unsigned long convert_unit(unsigned long value, char *unit)
   7 {
   8         *unit = ' ';
   9
  10         if (value > 1000) {
  11                 value /= 1000;
  12                 *unit = 'K';
  13         }
  14
  15         if (value > 1000) {
  16                 value /= 1000;
  17                 *unit = 'M';
  18         }
  19
  20         if (value > 1000) {
  21                 value /= 1000;
  22                 *unit = 'G';
  23         }
  24
  25         return value;
  26 }
  27
  28 int unit_number__scnprintf(char *buf, size_t size, u64 n)
  29 {
  30         char unit[4] = "BKMG";
  31         int i = 0;
  32
  33         while (((n / 1024) > 1) && (i < 3)) {
  34                 n /= 1024;
  35                 i++;
  36         }
  37
  38         return scnprintf(buf, size, "%" PRIu64 "%c", n, unit[i]);
  39 }