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-rw-r--r--tools/perf/builtin-ftrace.c17
1 files changed, 12 insertions, 5 deletions
diff --git a/tools/perf/builtin-ftrace.c b/tools/perf/builtin-ftrace.c
index 1ebf71ecc1a8..4b3fcee5725a 100644
--- a/tools/perf/builtin-ftrace.c
+++ b/tools/perf/builtin-ftrace.c
@@ -169,6 +169,17 @@ out:
return ret;
}
+static int write_tracing_file_int(const char *name, int value)
+{
+ char buf[16];
+
+ snprintf(buf, sizeof(buf), "%d", value);
+ if (write_tracing_file(name, buf) < 0)
+ return -1;
+
+ return 0;
+}
+
static int reset_tracing_cpu(void);
static void reset_tracing_filters(void);
@@ -299,8 +310,6 @@ static void reset_tracing_filters(void)
static int set_tracing_depth(struct perf_ftrace *ftrace)
{
- char buf[16];
-
if (ftrace->graph_depth == 0)
return 0;
@@ -309,9 +318,7 @@ static int set_tracing_depth(struct perf_ftrace *ftrace)
return -1;
}
- snprintf(buf, sizeof(buf), "%d", ftrace->graph_depth);
-
- if (write_tracing_file("max_graph_depth", buf) < 0)
+ if (write_tracing_file_int("max_graph_depth", ftrace->graph_depth) < 0)
return -1;
return 0;