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Message-Id: <1258965683-21302-3-git-send-email-y>
Date:	Mon, 23 Nov 2009 09:41:20 +0100
From:	y@...str.eu
To:	linux-kernel@...r.kernel.org
Cc:	michal.simek@...alogix.com, wuzhangjin@...il.com, mingo@...e.hu,
	rostedt@...dmis.org, Michal Simek <monstr@...str.eu>
Subject: [PATCH 2/5] microblaze: ftrace: enable HAVE_FUNCTION_TRACE_MCOUNT_TEST

From: Michal Simek <monstr@...str.eu>

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

Signed-off-by: Michal Simek <monstr@...str.eu>
---
 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

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