perf/ui/progress.c

0001 // SPDX-License-Identifier: GPL-2.0
0002 #include <linux/kernel.h>
0003 #include "progress.h"
0004
0005 static void null_progress__update(struct ui_progress *p __maybe_unused)
0006 {
0007 }
0008
0009 static struct ui_progress_ops null_progress__ops =
0010 {
0011     .update = null_progress__update,
0012 };
0013
0014 struct ui_progress_ops *ui_progress__ops = &null_progress__ops;
0015
0016 void ui_progress__update(struct ui_progress *p, u64 adv)
0017 {
0018     u64 last = p->curr;
0019
0020     p->curr += adv;
0021
0022     if (p->curr >= p->next) {
0023         u64 nr = DIV_ROUND_UP(p->curr - last, p->step);
0024
0025         p->next += nr * p->step;
0026         ui_progress__ops->update(p);
0027     }
0028 }
0029
0030 void __ui_progress__init(struct ui_progress *p, u64 total,
0031              const char *title, bool size)
0032 {
0033     p->curr = 0;
0034     p->next = p->step = total / 16 ?: 1;
0035     p->total = total;
0036     p->title = title;
0037     p->size  = size;
0038
0039     if (ui_progress__ops->init)
0040         ui_progress__ops->init(p);
0041 }
0042
0043 void ui_progress__finish(void)
0044 {
0045     if (ui_progress__ops->finish)
0046         ui_progress__ops->finish();
0047 }