Commit 6d9e60ce authored by Michal Simek's avatar Michal Simek
Browse files

microblaze: ftrace: enable HAVE_FUNCTION_TRACE_MCOUNT_TEST 



Implement MCOUNT_TEST in asm code - it is faster than use
generic code

Signed-off-by: default avatarMichal Simek <monstr@monstr.eu>
parent 2fd7c761

arch/microblaze/Kconfig

+1 −0
Original line number Diff line number Diff line
@@ -7,6 +7,7 @@ config MICROBLAZE 
	def_bool y

	select HAVE_LMB

	select HAVE_FUNCTION_TRACER

	select HAVE_FUNCTION_TRACE_MCOUNT_TEST

	select USB_ARCH_HAS_EHCI

	select ARCH_WANT_OPTIONAL_GPIOLIB

arch/microblaze/kernel/mcount.S

+5 −0
Original line number Diff line number Diff line
@@ -85,6 +85,11 @@ ENTRY(ftrace_stub) 
ENTRY(_mcount)

	SAVE_REGS

	swi	r15, r1, 0;

	/* MS: HAVE_FUNCTION_TRACE_MCOUNT_TEST begin of checking */

	lwi	r5, r0, function_trace_stop;

	bneid	r5, end;

	nop;

	/* MS: HAVE_FUNCTION_TRACE_MCOUNT_TEST end of checking */

	/* MS: test function trace if is taken or not */

	lwi	r20, r0, ftrace_trace_function;

	addik	r6, r0, ftrace_stub;