tools/perf/ui/progress.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 #include <linux/kernel.h>
   3 #include "progress.h"
   4
   5 static void null_progress__update(struct ui_progress *p __maybe_unused)
   6 {
   7 }
   8
   9 static struct ui_progress_ops null_progress__ops =
  10 {
  11         .update = null_progress__update,
  12 };
  13
  14 struct ui_progress_ops *ui_progress__ops = &null_progress__ops;
  15
  16 void ui_progress__update(struct ui_progress *p, u64 adv)
  17 {
  18         u64 last = p->curr;
  19
  20         p->curr += adv;
  21
  22         if (p->curr >= p->next) {
  23                 u64 nr = DIV_ROUND_UP(p->curr - last, p->step);
  24
  25                 p->next += nr * p->step;
  26                 ui_progress__ops->update(p);
  27         }
  28 }
  29
  30 void __ui_progress__init(struct ui_progress *p, u64 total,
  31                          const char *title, bool size)
  32 {
  33         p->curr = 0;
  34         p->next = p->step = total / 16 ?: 1;
  35         p->total = total;
  36         p->title = title;
  37         p->size  = size;
  38
  39         if (ui_progress__ops->init)
  40                 ui_progress__ops->init(p);
  41 }
  42
  43 void ui_progress__finish(void)
  44 {
  45         if (ui_progress__ops->finish)
  46                 ui_progress__ops->finish();
  47 }