[PATCH 2/3] trace-cmd: Have --max-graph-depth only be part of instance

[Steven Rostedt <rostedt@xxxxxxxxxxx>]

From: "Steven Rostedt (VMware)" <rostedt@xxxxxxxxxxx>

New kernels will allow function graph tracer to be used in an instance,
which means that the max_graph_depth file will be per instance and not just
the top level file. Make the max_graph_depth associated to the instance and
not part of the trace record context.

Signed-off-by: Steven Rostedt (VMware) <rostedt@xxxxxxxxxxx>
---
 tracecmd/include/trace-local.h |  2 ++
 tracecmd/trace-record.c        | 27 +++++++++++++++------------
 2 files changed, 17 insertions(+), 12 deletions(-)

diff --git a/tracecmd/include/trace-local.h b/tracecmd/include/trace-local.h
index a1a06e9196b4..1cad3ccc4de7 100644
--- a/tracecmd/include/trace-local.h
+++ b/tracecmd/include/trace-local.h
@@ -183,6 +183,8 @@ struct buffer_instance {
 	struct tracecmd_msg_handle *msg_handle;
 	struct tracecmd_output *network_handle;
 
+	char			*max_graph_depth;
+
 	int			flags;
 	int			tracing_on_init_val;
 	int			tracing_on_fd;
diff --git a/tracecmd/trace-record.c b/tracecmd/trace-record.c
index ee35ada10d6e..2d716a81acbf 100644
--- a/tracecmd/trace-record.c
+++ b/tracecmd/trace-record.c
@@ -207,7 +207,6 @@ struct common_record_context {
 	struct buffer_instance *instance;
 	const char *output;
 	char *date2ts;
-	char *max_graph_depth;
 	int data_flags;
 
 	int record_all;
@@ -4892,9 +4891,9 @@ static void parse_record_options(int argc,
 			ctx->data_flags |= DATA_FL_OFFSET;
 			break;
 		case OPT_max_graph_depth:
-			free(ctx->max_graph_depth);
-			ctx->max_graph_depth = strdup(optarg);
-			if (!ctx->max_graph_depth)
+			free(ctx->instance->max_graph_depth);
+			ctx->instance->max_graph_depth = strdup(optarg);
+			if (!ctx->instance->max_graph_depth)
 				die("Could not allocate option");
 			break;
 		case OPT_no_filter:
@@ -5056,10 +5055,12 @@ static void record_trace(int argc, char **argv,
 	update_plugins(type);
 	set_options();
 
-	if (ctx->max_graph_depth) {
-		for_all_instances(instance)
-			set_max_graph_depth(instance, ctx->max_graph_depth);
-		free(ctx->max_graph_depth);
+	for_all_instances(instance) {
+		if (instance->max_graph_depth) {
+			set_max_graph_depth(instance, instance->max_graph_depth);
+			free(instance->max_graph_depth);
+			instance->max_graph_depth = NULL;
+		}
 	}
 
 	allocate_seq();
@@ -5155,10 +5156,12 @@ void trace_extract(int argc, char **argv)
 	update_plugins(type);
 	set_options();
 
-	if (ctx.max_graph_depth) {
-		for_all_instances(instance)
-			set_max_graph_depth(instance, ctx.max_graph_depth);
-		free(ctx.max_graph_depth);
+	for_all_instances(instance) {
+		if (instance->max_graph_depth) {
+			set_max_graph_depth(instance, instance->max_graph_depth);
+			free(instance->max_graph_depth);
+			instance->max_graph_depth = NULL;
+		}
 	}
 
 	allocate_seq();
-- 
2.20.1