[tip:perf/core] perf c2c report: Setup number of header lines for hists

[tip-bot for Jiri Olsa]

Commit-ID:  1d62fcd693c0014dca74490a1139be36271f4af6
Gitweb:     http://git.kernel.org/tip/1d62fcd693c0014dca74490a1139be36271f4af6
Author:     Jiri Olsa <jolsa@xxxxxxxxxx>
AuthorDate: Tue, 24 May 2016 10:12:31 +0200
Committer:  Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
CommitDate: Wed, 19 Oct 2016 13:18:31 -0300

perf c2c report: Setup number of header lines for hists

Allow to setup number of header lines for c2c hists objects.

Signed-off-by: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Andi Kleen <andi@xxxxxxxxxxxxxx>
Cc: David Ahern <dsahern@xxxxxxxxx>
Cc: Don Zickus <dzickus@xxxxxxxxxx>
Cc: Joe Mario <jmario@xxxxxxxxxx>
Cc: Namhyung Kim <namhyung@xxxxxxxxxx>
Cc: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>
Link: http://lkml.kernel.org/n/tip-4ilsf0ulubrd4y96g7tnpwzk@xxxxxxxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
 tools/perf/builtin-c2c.c | 18 ++++++++++++------
 1 file changed, 12 insertions(+), 6 deletions(-)

diff --git a/tools/perf/builtin-c2c.c b/tools/perf/builtin-c2c.c
index 0f898d3..44a8567 100644
--- a/tools/perf/builtin-c2c.c
+++ b/tools/perf/builtin-c2c.c
@@ -100,11 +100,13 @@ static struct hist_entry_ops c2c_entry_ops = {
 };
 
 static int c2c_hists__init(struct c2c_hists *hists,
-			   const char *sort);
+			   const char *sort,
+			   int nr_header_lines);
 
 static struct c2c_hists*
 he__get_c2c_hists(struct hist_entry *he,
-		  const char *sort)
+		  const char *sort,
+		  int nr_header_lines)
 {
 	struct c2c_hist_entry *c2c_he;
 	struct c2c_hists *hists;
@@ -118,7 +120,7 @@ he__get_c2c_hists(struct hist_entry *he,
 	if (!hists)
 		return NULL;
 
-	ret = c2c_hists__init(hists, sort);
+	ret = c2c_hists__init(hists, sort, nr_header_lines);
 	if (ret) {
 		free(hists);
 		return NULL;
@@ -214,7 +216,7 @@ static int process_sample_event(struct perf_tool *tool __maybe_unused,
 		if (!mi_dup)
 			goto free_mi;
 
-		c2c_hists = he__get_c2c_hists(he, "offset");
+		c2c_hists = he__get_c2c_hists(he, "offset", 2);
 		if (!c2c_hists)
 			goto free_mi_dup;
 
@@ -1591,7 +1593,8 @@ static int hpp_list__parse(struct perf_hpp_list *hpp_list,
 }
 
 static int c2c_hists__init(struct c2c_hists *hists,
-			   const char *sort)
+			   const char *sort,
+			   int nr_header_lines)
 {
 	__hists__init(&hists->hists, &hists->list);
 
@@ -1602,6 +1605,9 @@ static int c2c_hists__init(struct c2c_hists *hists,
 	 */
 	perf_hpp_list__init(&hists->list);
 
+	/* Overload number of header lines.*/
+	hists->list.nr_header_lines = nr_header_lines;
+
 	return hpp_list__parse(&hists->list, NULL, sort);
 }
 
@@ -1730,7 +1736,7 @@ static int perf_c2c__report(int argc, const char **argv)
 
 	file.path = input_name;
 
-	err = c2c_hists__init(&c2c.hists, "dcacheline");
+	err = c2c_hists__init(&c2c.hists, "dcacheline", 2);
 	if (err) {
 		pr_debug("Failed to initialize hists\n");
 		goto out;