linux-kernel - Re: [PATCH] xen: xen: compile irq functions without -pg for ftrace

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Date:	Mon, 28 Jul 2008 21:32:35 +0200
From:	Sam Ravnborg <sam@...nborg.org>
To:	Jeremy Fitzhardinge <jeremy@...p.org>
Cc:	Ingo Molnar <mingo@...e.hu>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	"Alex Nixon (Intern)" <Alex.Nixon@...citrix.com>,
	Eduardo Habkost <ehabkost@...hat.com>
Subject: Re: [PATCH] xen: xen: compile irq functions without -pg for ftrace

On Mon, Jul 28, 2008 at 11:53:57AM -0700, Jeremy Fitzhardinge wrote:
> For some reason I managed to miss a bunch of irq-related functions
> which also need to be compiled without -pg when using ftrace.  This
> patch moves them into their own file, and starts a cleanup process
> I've been meaning to do anyway.
> 
> [ Sam, Ingo: I think the problem was that I enabled CONFIG_FTRACE
>  but didn't do a clean build.  Shouldn't the build-system notice
>  that the config changes the CFLAGS and rebuild everything?  That
>  didn't seem to happen in this case. ]

The build system usually does this.
And I have no reports that this has regressed until now.
What file?
Can you tell me how to reproduce it?

> 
> ===================================================================
> --- a/arch/x86/xen/Makefile
> +++ b/arch/x86/xen/Makefile
> @@ -2,9 +2,10 @@
> # Do not profile debug and lowlevel utilities
> CFLAGS_REMOVE_spinlock.o = -pg
> CFLAGS_REMOVE_time.o = -pg
> +CFLAGS_REMOVE_irq.o = -pg
> endif

I already NACK'ed this syntax and described the way it should be done.
Is this ignored or on a TODO list?

	Sam
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