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