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Date: Wed, 09 Feb 2011 13:22:03 -0800 From: "H. Peter Anvin" <hpa@...or.com> To: Steven Rostedt <rostedt@...dmis.org> CC: linux-kernel@...r.kernel.org, Ingo Molnar <mingo@...e.hu>, Andrew Morton <akpm@...ux-foundation.org>, Thomas Gleixner <tglx@...utronix.de>, Frederic Weisbecker <fweisbec@...il.com>, Mathieu Desnoyers <mathieu.desnoyers@...icios.com>, Andi Kleen <andi@...stfloor.org>, Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>, Michal Marek <mmarek@...e.cz> Subject: Re: [RFC][PATCH 2/4] ftrace: Add -mfentry to Makefile on function tracer On 02/09/2011 12:28 PM, Steven Rostedt wrote: > On Wed, 2011-02-09 at 15:02 -0500, Steven Rostedt wrote: > >> ifdef CONFIG_FUNCTION_TRACER >> -KBUILD_CFLAGS += -pg >> +ifdef CONFIG_HAVE_FENTRY >> +CC_HAS_FENTRY := $(call cc-option, -mfentry -DCC_HAS_FENTRY) > > I should include a thanks to H. Peter Anvin in the change log for > telling me about the cc-option trick. > Actually we should probably calling this -DCC_USING_FENTRY or something like that, since as coded above it includes the CONFIG_FUNCTION_TRACER dependency. This is a good thing -- it makes the conditionals easier -- we just also want to make sure they don't get misunderstood. -hpa -- 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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