diff options
| author | Namhyung Kim <[email protected]> | 2016-08-31 11:55:29 +0900 |
|---|---|---|
| committer | Steven Rostedt <[email protected]> | 2016-09-01 12:19:40 -0400 |
| commit | 8861dd303cba879bae9a9dcee74042fb642bf03b (patch) | |
| tree | 9395c7c589d846cc94cbed3a960131fa15c72db4 /kernel/trace/trace_functions_graph.c | |
| parent | 613dccdf681aed9f9d1243bb2b8cd864a887802f (diff) | |
ftrace: Access ret_stack->subtime only in the function profiler
The subtime is used only for function profiler with function graph
tracer enabled. Move the definition of subtime under
CONFIG_FUNCTION_PROFILER to reduce the memory usage. Also move the
initialization of subtime into the graph entry callback.
Link: http://lkml.kernel.org/r/[email protected]
Cc: Ingo Molnar <[email protected]>
Cc: Josh Poimboeuf <[email protected]>
Signed-off-by: Namhyung Kim <[email protected]>
Signed-off-by: Steven Rostedt <[email protected]>
Diffstat (limited to 'kernel/trace/trace_functions_graph.c')
| -rw-r--r-- | kernel/trace/trace_functions_graph.c | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/kernel/trace/trace_functions_graph.c b/kernel/trace/trace_functions_graph.c index e14017c36170..148c90f1e49b 100644 --- a/kernel/trace/trace_functions_graph.c +++ b/kernel/trace/trace_functions_graph.c @@ -170,7 +170,6 @@ ftrace_push_return_trace(unsigned long ret, unsigned long func, int *depth, current->ret_stack[index].ret = ret; current->ret_stack[index].func = func; current->ret_stack[index].calltime = calltime; - current->ret_stack[index].subtime = 0; current->ret_stack[index].fp = frame_pointer; *depth = current->curr_ret_stack; |