diff options
Diffstat (limited to 'tools/perf/util/hist.c')
| -rw-r--r-- | tools/perf/util/hist.c | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/tools/perf/util/hist.c b/tools/perf/util/hist.c index 80fe30d90d7..87ef5c7797d 100644 --- a/tools/perf/util/hist.c +++ b/tools/perf/util/hist.c @@ -92,6 +92,41 @@ static void hist_entry__add_cpumode_period(struct hist_entry *self, } } +static void hist_entry__decay(struct hist_entry *he) +{ + he->period = (he->period * 7) / 8; + he->nr_events = (he->nr_events * 7) / 8; +} + +static bool hists__decay_entry(struct hists *hists, struct hist_entry *he) +{ + hists->stats.total_period -= he->period; + hist_entry__decay(he); + hists->stats.total_period += he->period; + return he->period == 0; +} + +void hists__decay_entries(struct hists *hists) +{ + struct rb_node *next = rb_first(&hists->entries); + struct hist_entry *n; + + while (next) { + n = rb_entry(next, struct hist_entry, rb_node); + next = rb_next(&n->rb_node); + + if (hists__decay_entry(hists, n)) { + rb_erase(&n->rb_node, &hists->entries); + + if (sort__need_collapse) + rb_erase(&n->rb_node_in, &hists->entries_collapsed); + + hist_entry__free(n); + --hists->nr_entries; + } + } +} + /* * histogram, sorted on item, collects periods */ @@ -635,6 +670,21 @@ static size_t hist_entry_callchain__fprintf(FILE *fp, struct hist_entry *self, return ret; } +void hists__output_recalc_col_len(struct hists *hists, int max_rows) +{ + struct rb_node *next = rb_first(&hists->entries); + struct hist_entry *n; + int row = 0; + + hists__reset_col_len(hists); + + while (next && row++ < max_rows) { + n = rb_entry(next, struct hist_entry, rb_node); + hists__calc_col_len(hists, n); + next = rb_next(&n->rb_node); + } +} + int hist_entry__snprintf(struct hist_entry *self, char *s, size_t size, struct hists *hists, struct hists *pair_hists, bool show_displacement, long displacement, |