[tip:perf/core] perf diff: Get rid of hists__compute_resort()

[tip-bot for Namhyung Kim <tipbot@zytor.com>]

Commit-ID:  38259a170dfab4865968b592ae90b373e9f7d5b5
Gitweb:     http://git.kernel.org/tip/38259a170dfab4865968b592ae90b373e9f7d5b5
Author:     Namhyung Kim <namhyung@kernel.org>
AuthorDate: Sat, 27 Dec 2014 14:06:30 +0900
Committer:  Arnaldo Carvalho de Melo <acme@redhat.com>
CommitDate: Wed, 21 Jan 2015 13:24:33 -0300

perf diff: Get rid of hists__compute_resort()

The hists__compute_resort() is to sort output fields based on the
given field/criteria.  This was done without the sort list but as we
added the field to the sort list, we can do it with normal
hists__output_resort() using the ->sort callback.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1419656793-32756-2-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
 tools/perf/builtin-diff.c | 59 +++--------------------------------------------
 1 file changed, 3 insertions(+), 56 deletions(-)

diff --git a/tools/perf/builtin-diff.c b/tools/perf/builtin-diff.c
index 318ab9c..72c718e 100644
--- a/tools/perf/builtin-diff.c
+++ b/tools/perf/builtin-diff.c
@@ -581,68 +581,15 @@ hist_entry__cmp_wdiff(struct hist_entry *left, struct hist_entry *right)
 	return hist_entry__cmp_compute(right, left, COMPUTE_WEIGHTED_DIFF);
 }
 
-static void insert_hist_entry_by_compute(struct rb_root *root,
-					 struct hist_entry *he,
-					 int c)
-{
-	struct rb_node **p = &root->rb_node;
-	struct rb_node *parent = NULL;
-	struct hist_entry *iter;
-
-	while (*p != NULL) {
-		parent = *p;
-		iter = rb_entry(parent, struct hist_entry, rb_node);
-		if (hist_entry__cmp_compute(he, iter, c) < 0)
-			p = &(*p)->rb_left;
-		else
-			p = &(*p)->rb_right;
-	}
-
-	rb_link_node(&he->rb_node, parent, p);
-	rb_insert_color(&he->rb_node, root);
-}
-
-static void hists__compute_resort(struct hists *hists)
-{
-	struct rb_root *root;
-	struct rb_node *next;
-
-	if (sort__need_collapse)
-		root = &hists->entries_collapsed;
-	else
-		root = hists->entries_in;
-
-	hists->entries = RB_ROOT;
-	next = rb_first(root);
-
-	hists__reset_stats(hists);
-	hists__reset_col_len(hists);
-
-	while (next != NULL) {
-		struct hist_entry *he;
-
-		he = rb_entry(next, struct hist_entry, rb_node_in);
-		next = rb_next(&he->rb_node_in);
-
-		insert_hist_entry_by_compute(&hists->entries, he, compute);
-		hists__inc_stats(hists, he);
-
-		if (!he->filtered)
-			hists__calc_col_len(hists, he);
-	}
-}
-
 static void hists__process(struct hists *hists)
 {
 	if (show_baseline_only)
 		hists__baseline_only(hists);
 
-	if (sort_compute) {
+	if (sort_compute)
 		hists__precompute(hists);
-		hists__compute_resort(hists);
-	} else {
-		hists__output_resort(hists, NULL);
-	}
+
+	hists__output_resort(hists, NULL);
 
 	hists__fprintf(hists, true, 0, 0, 0, stdout);
 }