linux-kernel - [PATCH 2/2] perf evsel: add inline functions to sample callchain output

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Date:   Tue, 19 Feb 2019 19:38:10 +0100
From:   Jonas Rabenstein <jonas.rabenstein@...dium.uni-erlangen.de>
To:     linux-perf-users@...r.kernel.org
Cc:     Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Arnaldo Carvalho de Melo <acme@...nel.org>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Jiri Olsa <jolsa@...hat.com>,
        Namhyung Kim <namhyung@...nel.org>,
        Andi Kleen <ak@...ux.intel.com>,
        Thomas Richter <tmricht@...ux.ibm.com>,
        Stephane Eranian <eranian@...gle.com>,
        Jonas Rabenstein <jonas.rabenstein@...dium.uni-erlangen.de>,
        linux-kernel@...r.kernel.org
Subject: [PATCH 2/2] perf evsel: add inline functions to sample callchain output

Whenever a callchain shall be printed search for each address whether
inline information is available and add those symbols to the output
if symbol_conf.inline_name is enabled.

Signed-off-by: Jonas Rabenstein <jonas.rabenstein@...dium.uni-erlangen.de>
---
 tools/perf/util/evsel_fprintf.c | 46 +++++++++++++++++++++++++++++++++
 1 file changed, 46 insertions(+)

diff --git a/tools/perf/util/evsel_fprintf.c b/tools/perf/util/evsel_fprintf.c
index c710f687ddf4..9f9ece453dc4 100644
--- a/tools/perf/util/evsel_fprintf.c
+++ b/tools/perf/util/evsel_fprintf.c
@@ -168,6 +168,49 @@ static int __fprintf_callchain_link(u64 ip, struct map *map, struct symbol *symb
 	return printed;
 }
 
+static int __fprintf_callchain_inlines(struct callchain_cursor_node *node,
+				       bool first, int left_alignment,
+				       unsigned int print_opts, FILE *fp)
+{
+	int printed = 0;
+	struct inline_node *inline_node;
+	struct inline_list *ilist;
+	u64 addr;
+
+	if (!symbol_conf.inline_name)
+		return 0;
+
+	if (!node->map || !node->map->dso)
+		return 0;
+
+	addr = node->map->map_ip(node->map, node->ip);
+
+	inline_node = inlines__tree_find(&node->map->dso->inlined_nodes,
+					 addr);
+	if (!inline_node) {
+		inline_node = dso__parse_addr_inlines(node->map->dso,
+						      addr, node->sym);
+		if (!inline_node)
+			return 0;
+		inlines__tree_insert(&node->map->dso->inlined_nodes,
+				     inline_node);
+	}
+
+	list_for_each_entry(ilist, &inline_node->val, list) {
+		if (ilist->symbol == node->sym)
+			break;
+
+		printed += __fprintf_callchain_link(node->ip, node->map,
+						    ilist->symbol,
+						    ilist->srcline,
+						    first, left_alignment,
+						    print_opts, fp);
+		first = (first && printed == 0);
+	}
+
+	return printed;
+}
+
 int sample__fprintf_callchain(struct perf_sample *sample, int left_alignment,
 			      unsigned int print_opts, struct callchain_cursor *cursor,
 			      FILE *fp)
@@ -183,6 +226,9 @@ int sample__fprintf_callchain(struct perf_sample *sample, int left_alignment,
 			if (!node)
 				break;
 
+			printed += __fprintf_callchain_inlines(node, (printed ==  0),
+							       left_alignment,
+							       print_opts, fp);
 
 			printed += __fprintf_callchain_link(node->ip, node->map,
 							    node->sym, NULL,
-- 
2.19.2