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Message-ID: <1283215653.1377.41.camel@gandalf.stny.rr.com> Date: Mon, 30 Aug 2010 20:47:33 -0400 From: Steven Rostedt <rostedt@...dmis.org> To: Richard Kennedy <richard@....demon.co.uk> Cc: Frederic Weisbecker <fweisbec@...il.com>, lkml <linux-kernel@...r.kernel.org>, Ingo Molnar <mingo@...hat.com> Subject: Re: TRACE: config warning for IRQSOFF_TRACER On Sat, 2010-08-21 at 15:52 +0100, Richard Kennedy wrote: > In my config with PROVE_LOCKING=n and FTRACE=y (which defaults > IRQSOFF_TRACER to y), I get the following warning from make oldconfig. > > scripts/kconfig/conf --oldconfig arch/x86/Kconfig > warning: (IRQSOFF_TRACER && TRACING_SUPPORT && FTRACE && > TRACE_IRQFLAGS_SUPPORT && !ARCH_USES_GETTIMEOFFSET) selects > TRACE_IRQFLAGS which has unmet direct dependencies (DEBUG_KERNEL && > TRACE_IRQFLAGS_SUPPORT && PROVE_LOCKING) > > The problem is that TRACE_IRQFLAGS depends on PROVE_LOCKING. > Should it select PROVE_LOCKING instead? or is there a better way to fix > this? The TRACE_IRQFLAGS was originally written for lockdep, but it is now used by Ftrace's irqsoff tracer. I just compiled and booted with TRACE_IRQFLAGS=y and PROVE_LOCKING not set, and it worked fine. I think the correct patch is to remove the dependency of TRACE_IRQFLAGS on PROVE_LOCKING. -- Steve -- 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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