From 6d9e60ce30a1be35491c74df00aaa25d869f8a02 Mon Sep 17 00:00:00 2001 From: Michal Simek Date: Mon, 16 Nov 2009 09:55:08 +0100 Subject: microblaze: ftrace: enable HAVE_FUNCTION_TRACE_MCOUNT_TEST Implement MCOUNT_TEST in asm code - it is faster than use generic code Signed-off-by: Michal Simek --- arch/microblaze/Kconfig | 1 + arch/microblaze/kernel/mcount.S | 5 +++++ 2 files changed, 6 insertions(+) (limited to 'arch') diff --git a/arch/microblaze/Kconfig b/arch/microblaze/Kconfig index 18003ca08196..cccf3adfae50 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 a257a1b75ed2..97eef3eea944 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; -- cgit v1.2.3