[PATCH 2/5] microblaze: ftrace: enable HAVE_FUNCTION_TRACE_MCOUNT_TEST

[y]

From: Michal Simek <monstr@xxxxxxxxx>

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

Signed-off-by: Michal Simek <monstr@xxxxxxxxx>
---
 arch/microblaze/Kconfig         |    1 +
 arch/microblaze/kernel/mcount.S |    5 +++++
 2 files changed, 6 insertions(+), 0 deletions(-)

diff --git a/arch/microblaze/Kconfig b/arch/microblaze/Kconfig
index 18003ca..cccf3ad 100644
--- a/arch/microblaze/Kconfig
+++ b/arch/microblaze/Kconfig
@@ -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
 
diff --git a/arch/microblaze/kernel/mcount.S b/arch/microblaze/kernel/mcount.S
index a257a1b..97eef3e 100644
--- a/arch/microblaze/kernel/mcount.S
+++ b/arch/microblaze/kernel/mcount.S
@@ -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;
-- 
1.5.5.1

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/