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perf diff: Move hists__match to the hists lib

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Its not 'diff' specific and will be useful for other use cases, like
bucketizing multiple events in a single session.

Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-o35urjgxfxxm70aw1wa81s4w@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Arnaldo Carvalho de Melo 2012-11-08 17:54:33 -03:00
parent b821c73253
commit 95529be478
3 changed files with 40 additions and 34 deletions
Download patch file Download diff file Expand all files Collapse all files

37
tools/perf/util/hist.c
View file

@ -716,3 +716,40 @@ void hists__inc_nr_events(struct hists *hists, u32 type)
++hists->stats.nr_events[0];
++hists->stats.nr_events[type];
}
static struct hist_entry *hists__find_entry(struct hists *hists,
struct hist_entry *he)
{
struct rb_node *n = hists->entries.rb_node;
while (n) {
struct hist_entry *iter = rb_entry(n, struct hist_entry, rb_node);
int64_t cmp = hist_entry__cmp(he, iter);
if (cmp < 0)
n = n->rb_left;
else if (cmp > 0)
n = n->rb_right;
else
return iter;
}
return NULL;
}
/*
* Look for pairs to link to the leader buckets (hist_entries):
*/
void hists__match(struct hists *leader, struct hists *other)
{
struct rb_node *nd;
struct hist_entry *pos, *pair;
for (nd = rb_first(&leader->entries); nd; nd = rb_next(nd)) {
pos = rb_entry(nd, struct hist_entry, rb_node);
pair = hists__find_entry(other, pos);
if (pair)
hist__entry_add_pair(pos, pair);
}
}