commit 547a92e0aedb88129e7fbd804697a11949de2e5a
author Akihiro Nagai <akihiro.nagai.hw@hitachi.com> Mon Jan 30 13:42:57 2012 +0900
committer Arnaldo Carvalho de Melo <acme@redhat.com> Mon Jan 30 17:57:57 2012 -0200
tree dbe71c0161ef32186de12032f4f0238383517dc4
parent f9d36996564f91c517b75b02942015f7e09a6574

perf script: Unify the expressions indicating "unknown"

The perf script command uses various expressions to indicate "unknown".

It is unfriendly for user scripts to parse it. So, this patch unifies
the expressions to "[unknown]".

Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: yrl.pp-manager.tt@hitachi.com
Link: http://lkml.kernel.org/r/20120130044257.2384.62905.stgit@linux3
Signed-off-by: Akihiro Nagai <akihiro.nagai.hw@hitachi.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/util/session.c

diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c
index b5ca255..e5334a9 100644
--- a/tools/perf/util/session.c
+++ b/tools/perf/util/session.c
@@ -1296,7 +1296,6 @@
 			  int print_sym, int print_dso)
 {
 	struct addr_location al;
-	const char *symname, *dsoname;
 	struct callchain_cursor *cursor = &evsel->hists.callchain_cursor;
 	struct callchain_cursor_node *node;
 
@@ -1324,20 +1323,13 @@
 
 			printf("\t%16" PRIx64, node->ip);
 			if (print_sym) {
-				if (node->sym && node->sym->name)
-					symname = node->sym->name;
-				else
-					symname = "";
-
-				printf(" %s", symname);
+				printf(" ");
+				symbol__fprintf_symname(node->sym, stdout);
 			}
 			if (print_dso) {
-				if (node->map && node->map->dso && node->map->dso->name)
-					dsoname = node->map->dso->name;
-				else
-					dsoname = "";
-
-				printf(" (%s)", dsoname);
+				printf(" (");
+				map__fprintf_dsoname(al.map, stdout);
+				printf(")");
 			}
 			printf("\n");
 
@@ -1347,21 +1339,14 @@
 	} else {
 		printf("%16" PRIx64, sample->ip);
 		if (print_sym) {
-			if (al.sym && al.sym->name)
-				symname = al.sym->name;
-			else
-				symname = "";
-
-			printf(" %s", symname);
+			printf(" ");
+			symbol__fprintf_symname(al.sym, stdout);
 		}
 
 		if (print_dso) {
-			if (al.map && al.map->dso && al.map->dso->name)
-				dsoname = al.map->dso->name;
-			else
-				dsoname = "";
-
-			printf(" (%s)", dsoname);
+			printf(" (");
+			map__fprintf_dsoname(al.map, stdout);
+			printf(")");
 		}
 	}
 }