+static inline void pr_name_and_units(struct printbuf *out, const char *name, u64 ns)
+{
+ prt_str(out, name);
+ prt_tab(out);
+ bch2_pr_time_units_aligned(out, ns);
+ prt_newline(out);
+}
+
+void bch2_time_stats_to_text(struct printbuf *out, struct bch2_time_stats *stats)
+{
+ const struct time_unit *u;
+ s64 f_mean = 0, d_mean = 0;
+ u64 q, last_q = 0, f_stddev = 0, d_stddev = 0;
+ int i;
+ /*
+ * avoid divide by zero
+ */
+ if (stats->freq_stats.n) {
+ f_mean = mean_and_variance_get_mean(stats->freq_stats);
+ f_stddev = mean_and_variance_get_stddev(stats->freq_stats);
+ d_mean = mean_and_variance_get_mean(stats->duration_stats);
+ d_stddev = mean_and_variance_get_stddev(stats->duration_stats);
+ }
+
+ printbuf_tabstop_push(out, out->indent + TABSTOP_SIZE);
+ prt_printf(out, "count:");
+ prt_tab(out);
+ prt_printf(out, "%llu ",
+ stats->duration_stats.n);
+ printbuf_tabstop_pop(out);
+ prt_newline(out);
+
+ printbuf_tabstops_reset(out);
+
+ printbuf_tabstop_push(out, out->indent + 20);
+ printbuf_tabstop_push(out, TABSTOP_SIZE + 2);
+ printbuf_tabstop_push(out, 0);
+ printbuf_tabstop_push(out, TABSTOP_SIZE + 2);
+
+ prt_tab(out);
+ prt_printf(out, "since mount");
+ prt_tab_rjust(out);
+ prt_tab(out);
+ prt_printf(out, "recent");
+ prt_tab_rjust(out);
+ prt_newline(out);
+
+ printbuf_tabstops_reset(out);
+ printbuf_tabstop_push(out, out->indent + 20);
+ printbuf_tabstop_push(out, TABSTOP_SIZE);
+ printbuf_tabstop_push(out, 2);
+ printbuf_tabstop_push(out, TABSTOP_SIZE);
+
+ prt_printf(out, "duration of events");
+ prt_newline(out);
+ printbuf_indent_add(out, 2);
+
+ pr_name_and_units(out, "min:", stats->min_duration);
+ pr_name_and_units(out, "max:", stats->max_duration);
+
+ prt_printf(out, "mean:");
+ prt_tab(out);
+ bch2_pr_time_units_aligned(out, d_mean);
+ prt_tab(out);
+ bch2_pr_time_units_aligned(out, mean_and_variance_weighted_get_mean(stats->duration_stats_weighted));
+ prt_newline(out);
+
+ prt_printf(out, "stddev:");
+ prt_tab(out);
+ bch2_pr_time_units_aligned(out, d_stddev);
+ prt_tab(out);
+ bch2_pr_time_units_aligned(out, mean_and_variance_weighted_get_stddev(stats->duration_stats_weighted));
+
+ printbuf_indent_sub(out, 2);
+ prt_newline(out);
+
+ prt_printf(out, "time between events");
+ prt_newline(out);
+ printbuf_indent_add(out, 2);
+
+ pr_name_and_units(out, "min:", stats->min_freq);
+ pr_name_and_units(out, "max:", stats->max_freq);
+
+ prt_printf(out, "mean:");
+ prt_tab(out);
+ bch2_pr_time_units_aligned(out, f_mean);
+ prt_tab(out);
+ bch2_pr_time_units_aligned(out, mean_and_variance_weighted_get_mean(stats->freq_stats_weighted));
+ prt_newline(out);
+
+ prt_printf(out, "stddev:");
+ prt_tab(out);
+ bch2_pr_time_units_aligned(out, f_stddev);
+ prt_tab(out);
+ bch2_pr_time_units_aligned(out, mean_and_variance_weighted_get_stddev(stats->freq_stats_weighted));
+
+ printbuf_indent_sub(out, 2);
+ prt_newline(out);
+
+ printbuf_tabstops_reset(out);