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perf util: Add findnew method to intlist

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Similar to other findnew based methods if the requested object is not
found, add it to the list.

v2: followed format of other findnew methods per acme's request

Signed-off-by: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung.kim@lge.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1381289214-24885-2-git-send-email-dsahern@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
David Ahern
2013-10-08 21:26:52 -06:00
committed by Arnaldo Carvalho de Melo
parent 87f918685a
commit 813335b8b2
4 changed files with 44 additions and 7 deletions
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27
tools/perf/util/rblist.c
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@ -48,10 +48,12 @@ void rblist__remove_node(struct rblist *rblist, struct rb_node *rb_node)
rblist->node_delete(rblist, rb_node);
}
struct rb_node *rblist__find(struct rblist *rblist, const void *entry)
static struct rb_node *__rblist__findnew(struct rblist *rblist,
const void *entry,
bool create)
{
struct rb_node **p = &rblist->entries.rb_node;
struct rb_node *parent = NULL;
struct rb_node *parent = NULL, *new_node = NULL;
while (*p != NULL) {
int rc;
@ -67,7 +69,26 @@ struct rb_node *rblist__find(struct rblist *rblist, const void *entry)
return parent;
}
return NULL;
if (create) {
new_node = rblist->node_new(rblist, entry);
if (new_node) {
rb_link_node(new_node, parent, p);
rb_insert_color(new_node, &rblist->entries);
++rblist->nr_entries;
}
}
return new_node;
}
struct rb_node *rblist__find(struct rblist *rblist, const void *entry)
{
return __rblist__findnew(rblist, entry, false);
}
struct rb_node *rblist__findnew(struct rblist *rblist, const void *entry)
{
return __rblist__findnew(rblist, entry, true);
}
void rblist__init(struct rblist *rblist)