Commit-ID: 494d70a18137d18f0728fab7ad4f56aba29d1982 Gitweb: http://git.kernel.org/tip/494d70a18137d18f0728fab7ad4f56aba29d1982 Author: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx> AuthorDate: Thu, 8 Nov 2012 18:03:09 -0300 Committer: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx> CommitDate: Thu, 8 Nov 2012 18:08:15 -0300 perf hists: Introduce hists__link That given two hists will find the hist_entries (buckets) in the second hists that are for the same bucket in the first and link them, then it will look for all buckets in the second that don't have a counterpart in the first and will create a dummy counterpart that will then be linked to the entry in the second. For multiple events this will be done pairing the leader with all the other events in the group, so that in the end the leader will have all the buckets in all the hists in a group, dummy or not while the other hists will be left untouched. Cc: David Ahern <dsahern@xxxxxxxxx> Cc: Frederic Weisbecker <fweisbec@xxxxxxxxx> Cc: Jiri Olsa <jolsa@xxxxxxxxxx> Cc: Mike Galbraith <efault@xxxxxx> Cc: Namhyung Kim <namhyung@xxxxxxxxx> Cc: Paul Mackerras <paulus@xxxxxxxxx> Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx> Cc: Stephane Eranian <eranian@xxxxxxxxxx> Link: http://lkml.kernel.org/n/tip-l9l9ieozqdhn9lieokd95okw@xxxxxxxxxxxxxx Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx> --- tools/perf/util/hist.c | 60 ++++++++++++++++++++++++++++++++++++++++++++++++ tools/perf/util/hist.h | 1 + 2 files changed, 61 insertions(+), 0 deletions(-) diff --git a/tools/perf/util/hist.c b/tools/perf/util/hist.c index c1de3b0..7c6e73b 100644 --- a/tools/perf/util/hist.c +++ b/tools/perf/util/hist.c @@ -717,6 +717,42 @@ void hists__inc_nr_events(struct hists *hists, u32 type) ++hists->stats.nr_events[type]; } +static struct hist_entry *hists__add_dummy_entry(struct hists *hists, + struct hist_entry *pair) +{ + struct rb_node **p = &hists->entries.rb_node; + struct rb_node *parent = NULL; + struct hist_entry *he; + int cmp; + + while (*p != NULL) { + parent = *p; + he = rb_entry(parent, struct hist_entry, rb_node); + + cmp = hist_entry__cmp(pair, he); + + if (!cmp) + goto out; + + if (cmp < 0) + p = &(*p)->rb_left; + else + p = &(*p)->rb_right; + } + + he = hist_entry__new(pair); + if (he) { + he->stat.nr_events = 0; + he->stat.period = 0; + he->hists = hists; + rb_link_node(&he->rb_node, parent, p); + rb_insert_color(&he->rb_node, &hists->entries); + hists__inc_nr_entries(hists, he); + } +out: + return he; +} + static struct hist_entry *hists__find_entry(struct hists *hists, struct hist_entry *he) { @@ -753,3 +789,27 @@ void hists__match(struct hists *leader, struct hists *other) hist__entry_add_pair(pos, pair); } } + +/* + * Look for entries in the other hists that are not present in the leader, if + * we find them, just add a dummy entry on the leader hists, with period=0, + * nr_events=0, to serve as the list header. + */ +int hists__link(struct hists *leader, struct hists *other) +{ + struct rb_node *nd; + struct hist_entry *pos, *pair; + + for (nd = rb_first(&other->entries); nd; nd = rb_next(nd)) { + pos = rb_entry(nd, struct hist_entry, rb_node); + + if (!hist_entry__has_pairs(pos)) { + pair = hists__add_dummy_entry(leader, pos); + if (pair == NULL) + return -1; + hist__entry_add_pair(pair, pos); + } + } + + return 0; +} diff --git a/tools/perf/util/hist.h b/tools/perf/util/hist.h index ff1c396..1278c2c 100644 --- a/tools/perf/util/hist.h +++ b/tools/perf/util/hist.h @@ -116,6 +116,7 @@ void hists__reset_col_len(struct hists *hists); void hists__calc_col_len(struct hists *hists, struct hist_entry *he); void hists__match(struct hists *leader, struct hists *other); +int hists__link(struct hists *leader, struct hists *other); struct perf_hpp { char *buf; -- To unsubscribe from this list: send the line "unsubscribe linux-tip-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html