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authorSteven Rostedt <srostedt@redhat.com>2012-10-05 12:13:07 -0400
committerSteven Rostedt <rostedt@goodmis.org>2012-10-31 16:45:24 -0400
commit6f4156723c084bfc0c0f72205c541fafb8ad3ded (patch)
tree1852fb096d1f45a6d826480b41f9d7eb292c4e8a /kernel/trace/trace_functions.c
parentbcd83ea6cbfee54e33d1527b87538dc99ca2137b (diff)
tracing: Allow tracers to start at core initcall
There's times during debugging that it is helpful to see traces of early boot functions. But the tracers are initialized at device_initcall() which is quite late during the boot process. Setting the kernel command line parameter ftrace=function will not show anything until the function tracer is initialized. This prevents being able to trace functions before device_initcall(). There's no reason that the tracers need to be initialized so late in the boot process. Move them up to core_initcall() as they still need to come after early_initcall() which initializes the tracing buffers. Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Diffstat (limited to 'kernel/trace/trace_functions.c')
-rw-r--r--kernel/trace/trace_functions.c3
1 files changed, 1 insertions, 2 deletions
diff --git a/kernel/trace/trace_functions.c b/kernel/trace/trace_functions.c
index 618dcf8bdb87..bb227e380cb5 100644
--- a/kernel/trace/trace_functions.c
+++ b/kernel/trace/trace_functions.c
@@ -411,5 +411,4 @@ static __init int init_function_trace(void)
init_func_cmd_traceon();
return register_tracer(&function_trace);
}
-device_initcall(init_function_trace);
-
+core_initcall(init_function_trace);