perf c2c report: Add src line sort key

It is to be displayed in the single cacheline output:

  cl_srcline

It displays source line related to the code address that accessed
cacheline. It's a wrapper to global srcline sort entry.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Don Zickus <dzickus@redhat.com>
Cc: Joe Mario <jmario@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/n/tip-cmnzgm37mjz56ozsg4mnbgxq@git.kernel.org
[ Remove __maybe_unused from now used 'he' parameter in filter_cb() ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/builtin-c2c.c

@@ -50,6 +50,8 @@ struct perf_c2c {
 	int			 cpus_cnt;
 	int			*cpu2node;
 	int			 node_info;
+
+	bool			 show_src;
 };
 
 static struct perf_c2c c2c;
@@ -1363,6 +1365,11 @@ static struct c2c_dimension dim_cpucnt = {
 	.width		= 8,
 };
 
+static struct c2c_dimension dim_srcline = {
+	.name		= "cl_srcline",
+	.se		= &sort_srcline,
+};
+
 static struct c2c_dimension *dimensions[] = {
 	&dim_dcacheline,
 	&dim_offset,
@@ -1401,6 +1408,7 @@ static struct c2c_dimension *dimensions[] = {
 	&dim_mean_lcl,
 	&dim_mean_load,
 	&dim_cpucnt,
+	&dim_srcline,
 	NULL,
 };
 
@@ -1606,8 +1614,11 @@ static int c2c_hists__reinit(struct c2c_hists *c2c_hists,
 	return hpp_list__parse(&c2c_hists->list, output, sort);
 }
 
-static int filter_cb(struct hist_entry *he __maybe_unused)
+static int filter_cb(struct hist_entry *he)
 {
+	if (c2c.show_src && !he->srcline)
+		he->srcline = hist_entry__get_srcline(he);
+
 	return 0;
 }
 

tools/perf/util/sort.c

@@ -315,7 +315,7 @@ struct sort_entry sort_sym = {
 
 /* --sort srcline */
 
-static char *hist_entry__get_srcline(struct hist_entry *he)
+char *hist_entry__get_srcline(struct hist_entry *he)
 {
 	struct map *map = he->ms.map;
 

tools/perf/util/sort.h

@@ -280,4 +280,5 @@ int64_t
 sort__daddr_cmp(struct hist_entry *left, struct hist_entry *right);
 int64_t
 sort__dcacheline_cmp(struct hist_entry *left, struct hist_entry *right);
+char *hist_entry__get_srcline(struct hist_entry *he);
 #endif	/* __PERF_SORT_H */