perf: Rename append_callchain into callchain_append

Do that to start a consistant callchain API namespace.
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Christoph Hellwig <hch@infradead.org>

tools/perf/builtin-report.c

@@ -107,7 +107,8 @@ static int perf_session__add_hist_entry(struct perf_session *self,
 		goto out_free_syms;
 	err = 0;
 	if (symbol_conf.use_callchain) {
-		err = append_chain(he->callchain, data->callchain, syms, data->period);
+		err = callchain_append(he->callchain, data->callchain, syms,
+				       data->period);
 		if (err)
 			goto out_free_syms;
 	}

tools/perf/util/callchain.c

@@ -284,19 +284,18 @@ split_add_child(struct callchain_node *parent, struct resolved_chain *chain,
 }
 
 static int
-__append_chain(struct callchain_node *root, struct resolved_chain *chain,
+append_chain(struct callchain_node *root, struct resolved_chain *chain,
 	     unsigned int start, u64 period);
 
 static void
-__append_chain_children(struct callchain_node *root,
-			struct resolved_chain *chain,
+append_chain_children(struct callchain_node *root, struct resolved_chain *chain,
 		      unsigned int start, u64 period)
 {
 	struct callchain_node *rnode;
 
 	/* lookup in childrens */
 	chain_for_each_child(rnode, root) {
-		unsigned int ret = __append_chain(rnode, chain, start, period);
+		unsigned int ret = append_chain(rnode, chain, start, period);
 
 		if (!ret)
 			goto inc_children_hit;
@@ -309,7 +308,7 @@ __append_chain_children(struct callchain_node *root,
 }
 
 static int
-__append_chain(struct callchain_node *root, struct resolved_chain *chain,
+append_chain(struct callchain_node *root, struct resolved_chain *chain,
 	     unsigned int start, u64 period)
 {
 	struct callchain_list *cnode;
@@ -357,7 +356,7 @@ __append_chain(struct callchain_node *root, struct resolved_chain *chain,
 	}
 
 	/* We match the node and still have a part remaining */
-	__append_chain_children(root, chain, i, period);
+	append_chain_children(root, chain, i, period);
 
 	return 0;
 }
@@ -380,7 +379,7 @@ static void filter_context(struct ip_callchain *old, struct resolved_chain *new,
 }
 
 
-int append_chain(struct callchain_root *root, struct ip_callchain *chain,
+int callchain_append(struct callchain_root *root, struct ip_callchain *chain,
 		     struct map_symbol *syms, u64 period)
 {
 	struct resolved_chain *filtered;
@@ -398,7 +397,7 @@ int append_chain(struct callchain_root *root, struct ip_callchain *chain,
 	if (!filtered->nr)
 		goto end;
 
-	__append_chain_children(&root->node, filtered, 0, period);
+	append_chain_children(&root->node, filtered, 0, period);
 
 	if (filtered->nr > root->max_depth)
 		root->max_depth = filtered->nr;

tools/perf/util/callchain.h

@@ -66,7 +66,7 @@ static inline u64 cumul_hits(struct callchain_node *node)
 }
 
 int register_callchain_param(struct callchain_param *param);
-int append_chain(struct callchain_root *root, struct ip_callchain *chain,
+int callchain_append(struct callchain_root *root, struct ip_callchain *chain,
 		     struct map_symbol *syms, u64 period);
 
 bool ip_callchain__valid(struct ip_callchain *chain, const event_t *event);