tracing/function-graph-tracer: strip ending newlines on comments
Impact: tracer output improvement
Ending newlines are appended automatically on comments by the function
graph tracer because the newline needs to be placed after the "*/"
comment characters.
So if the user puts an ending newline, we want to strip it.
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/kernel/trace/trace_functions_graph.c b/kernel/trace/trace_functions_graph.c
index 4bf39fc..bc7d908 100644
--- a/kernel/trace/trace_functions_graph.c
+++ b/kernel/trace/trace_functions_graph.c
@@ -592,6 +592,12 @@
if (ent->flags & TRACE_FLAG_CONT)
trace_seq_print_cont(s, iter);
+ /* Strip ending newline */
+ if (s->buffer[s->len - 1] == '\n') {
+ s->buffer[s->len - 1] = '\0';
+ s->len--;
+ }
+
ret = trace_seq_printf(s, " */\n");
if (!ret)
return TRACE_TYPE_PARTIAL_LINE;
