disable some tracers

(cherry picked from commit 17ac90849e4cfed0d6c8788f4a0981187fe7c8c7)
(cherry picked from commit e3c5143eaa6443b4c718227b48f16225cc21282b)

Author: XileForce

arch/arm/Kconfig.debug

@@ -55,7 +55,7 @@ config FRAME_POINTER
 config OLD_MCOUNT
 	bool
 	depends on FUNCTION_TRACER && FRAME_POINTER
-	default y
+	default n
 
 config DEBUG_USER
 	bool "Verbose user fault messages"

kernel/trace/Kconfig

@@ -165,6 +165,7 @@ config FUNCTION_TRACER
 	select KALLSYMS
 	select GENERIC_TRACER
 	select CONTEXT_SWITCH_TRACER
+	default n
 	help
 	  Enable the kernel to trace every kernel function. This is done
 	  by using a compiler feature to insert a small, 5-byte No-Operation
@@ -181,6 +182,7 @@ config FUNCTION_GRAPH_TRACER
 	depends on !X86_32 || !CC_OPTIMIZE_FOR_SIZE
 	depends on ROP_PROTECTION_NONE
 	default y
+	default n
 	help
 	  Enable the kernel to trace a function at both its return
 	  and its entry.
@@ -429,6 +431,7 @@ config STACK_TRACER
 	select FUNCTION_TRACER
 	select STACKTRACE
 	select KALLSYMS
+	default n
 	help
 	  This special tracer records the maximum stack footprint of the
 	  kernel and displays it in /sys/kernel/debug/tracing/stack_trace.
@@ -522,7 +525,7 @@ config DYNAMIC_FTRACE
 	bool "enable/disable function tracing dynamically"
 	depends on FUNCTION_TRACER
 	depends on HAVE_DYNAMIC_FTRACE
-	default y
+	default n
 	help
 	  This option will modify all the calls to function tracing
 	  dynamically (will patch them out of the binary image and

kernel/trace/Makefile

@@ -1,16 +1,16 @@
 
 # Do not instrument the tracer itself:
 
-ifdef CONFIG_FUNCTION_TRACER
-ORIG_CFLAGS := $(KBUILD_CFLAGS)
-KBUILD_CFLAGS = $(subst $(CC_FLAGS_FTRACE),,$(ORIG_CFLAGS))
+#ifdef CONFIG_FUNCTION_TRACER
+#ORIG_CFLAGS := $(KBUILD_CFLAGS)
+#KBUILD_CFLAGS = $(subst $(CC_FLAGS_FTRACE),,$(ORIG_CFLAGS))
 
-ifdef CONFIG_FTRACE_SELFTEST
+#ifdef CONFIG_FTRACE_SELFTEST
 # selftest needs instrumentation
-CFLAGS_trace_selftest_dynamic.o = $(CC_FLAGS_FTRACE)
-obj-y += trace_selftest_dynamic.o
-endif
-endif
+#CFLAGS_trace_selftest_dynamic.o = $(CC_FLAGS_FTRACE)
+#obj-y += trace_selftest_dynamic.o
+#endif
+#endif
 
 # If unlikely tracing is enabled, do not trace these files
 ifdef CONFIG_TRACING_BRANCHES