bootconfig: Rename xbc_node_find_child() to xbc_node_find_subkey()

Rename xbc_node_find_child() to xbc_node_find_subkey() for
clarifying that function returns a key node (no value node).
Since there are xbc_node_for_each_child() (loop on all child
nodes) and xbc_node_for_each_subkey() (loop on only subkey
nodes), this name distinction is necessary to avoid confusing
users.

Link: https://lkml.kernel.org/r/163119459826.161018.11200274779483115300.stgit@devnote2

Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>

1 files changed, 12 insertions, 12 deletions

diff --git a/kernel/trace/trace_boot.c b/kernel/trace/trace_boot.c
index db6ee372dc6d..8d252f63cd78 100644
--- a/kernel/trace/trace_boot.c
+++ b/kernel/trace/trace_boot.c
@@ -262,9 +262,9 @@ trace_boot_hist_add_one_handler(struct xbc_node *hnode, char **bufp,
 	append_printf(bufp, end, ":%s(%s)", handler, p);
 
 	/* Compose 'action' parameter */
-	knode = xbc_node_find_child(hnode, "trace");
+	knode = xbc_node_find_subkey(hnode, "trace");
 	if (!knode)
-		knode = xbc_node_find_child(hnode, "save");
+		knode = xbc_node_find_subkey(hnode, "save");
 
 	if (knode) {
 		anode = xbc_node_get_child(knode);
@@ -283,7 +283,7 @@ trace_boot_hist_add_one_handler(struct xbc_node *hnode, char **bufp,
 				sep = ',';
 		}
 		append_printf(bufp, end, ")");
-	} else if (xbc_node_find_child(hnode, "snapshot")) {
+	} else if (xbc_node_find_subkey(hnode, "snapshot")) {
 		append_printf(bufp, end, ".snapshot()");
 	} else {
 		pr_err("hist.%s requires an action.\n",
@@ -314,7 +314,7 @@ trace_boot_hist_add_handlers(struct xbc_node *hnode, char **bufp,
 			break;
 	}
 
-	if (xbc_node_find_child(hnode, param))
+	if (xbc_node_find_subkey(hnode, param))
 		ret = trace_boot_hist_add_one_handler(hnode, bufp, end, handler, param);
 
 	return ret;
@@ -374,7 +374,7 @@ trace_boot_compose_hist_cmd(struct xbc_node *hnode, char *buf, size_t size)
 	if (p)
 		append_printf(&buf, end, ":name=%s", p);
 
-	node = xbc_node_find_child(hnode, "var");
+	node = xbc_node_find_subkey(hnode, "var");
 	if (node) {
 		xbc_node_for_each_key_value(node, knode, p) {
 			/* Expression must not include spaces. */
@@ -393,13 +393,13 @@ trace_boot_compose_hist_cmd(struct xbc_node *hnode, char *buf, size_t size)
 		append_printf(&buf, end, ":clear");
 
 	/* Histogram handler and actions */
-	node = xbc_node_find_child(hnode, "onmax");
+	node = xbc_node_find_subkey(hnode, "onmax");
 	if (node && trace_boot_hist_add_handlers(node, &buf, end, "var") < 0)
 		return -EINVAL;
-	node = xbc_node_find_child(hnode, "onchange");
+	node = xbc_node_find_subkey(hnode, "onchange");
 	if (node && trace_boot_hist_add_handlers(node, &buf, end, "var") < 0)
 		return -EINVAL;
-	node = xbc_node_find_child(hnode, "onmatch");
+	node = xbc_node_find_subkey(hnode, "onmatch");
 	if (node && trace_boot_hist_add_handlers(node, &buf, end, "event") < 0)
 		return -EINVAL;
 
@@ -436,7 +436,7 @@ trace_boot_init_histograms(struct trace_event_file *file,
 		}
 	}
 
-	if (xbc_node_find_child(hnode, "keys")) {
+	if (xbc_node_find_subkey(hnode, "keys")) {
 		if (trace_boot_compose_hist_cmd(hnode, buf, size) == 0) {
 			tmp = kstrdup(buf, GFP_KERNEL);
 			if (trigger_process_regex(file, buf) < 0)
@@ -495,7 +495,7 @@ trace_boot_init_one_event(struct trace_array *tr, struct xbc_node *gnode,
 			else if (trigger_process_regex(file, buf) < 0)
 				pr_err("Failed to apply an action: %s\n", p);
 		}
-		anode = xbc_node_find_child(enode, "hist");
+		anode = xbc_node_find_subkey(enode, "hist");
 		if (anode)
 			trace_boot_init_histograms(file, anode, buf, ARRAY_SIZE(buf));
 	} else if (xbc_node_find_value(enode, "actions", NULL))
@@ -517,7 +517,7 @@ trace_boot_init_events(struct trace_array *tr, struct xbc_node *node)
 	bool enable, enable_all = false;
 	const char *data;
 
-	node = xbc_node_find_child(node, "event");
+	node = xbc_node_find_subkey(node, "event");
 	if (!node)
 		return;
 	/* per-event key starts with "event.GROUP.EVENT" */
@@ -620,7 +620,7 @@ trace_boot_init_instances(struct xbc_node *node)
 	struct trace_array *tr;
 	const char *p;
 
-	node = xbc_node_find_child(node, "instance");
+	node = xbc_node_find_subkey(node, "instance");
 	if (!node)
 		return;