diff options
| -rw-r--r-- | kernel/trace/trace_functions_graph.c | 33 |
1 files changed, 29 insertions, 4 deletions
diff --git a/kernel/trace/trace_functions_graph.c b/kernel/trace/trace_functions_graph.c index 32b7fb9a19df..af60eef4cbcc 100644 --- a/kernel/trace/trace_functions_graph.c +++ b/kernel/trace/trace_functions_graph.c @@ -570,11 +570,36 @@ print_graph_function(struct trace_iterator *iter) } } +static void print_graph_headers(struct seq_file *s) +{ + /* 1st line */ + seq_printf(s, "# "); + if (tracer_flags.val & TRACE_GRAPH_PRINT_CPU) + seq_printf(s, "CPU "); + if (tracer_flags.val & TRACE_GRAPH_PRINT_PROC) + seq_printf(s, "TASK/PID "); + if (tracer_flags.val & TRACE_GRAPH_PRINT_OVERHEAD) + seq_printf(s, "OVERHEAD/"); + seq_printf(s, "DURATION FUNCTION CALLS\n"); + + /* 2nd line */ + seq_printf(s, "# "); + if (tracer_flags.val & TRACE_GRAPH_PRINT_CPU) + seq_printf(s, "| "); + if (tracer_flags.val & TRACE_GRAPH_PRINT_PROC) + seq_printf(s, "| | "); + if (tracer_flags.val & TRACE_GRAPH_PRINT_OVERHEAD) { + seq_printf(s, "| "); + seq_printf(s, "| | | | |\n"); + } else + seq_printf(s, " | | | | |\n"); +} static struct tracer graph_trace __read_mostly = { - .name = "function_graph", - .init = graph_trace_init, - .reset = graph_trace_reset, - .print_line = print_graph_function, + .name = "function_graph", + .init = graph_trace_init, + .reset = graph_trace_reset, + .print_line = print_graph_function, + .print_header = print_graph_headers, .flags = &tracer_flags, }; |