linux-kernel - Re: sparse chokes on arch/i386/kernel/i8253.c (was: 2.6.20-mm1)

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Date:	Thu, 15 Feb 2007 17:46:56 -0500
From:	Mathieu Desnoyers <mathieu.desnoyers@...ymtl.ca>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	Tilman Schmidt <tilman@...p.cc>, linux-kernel@...r.kernel.org
Subject: Re: sparse chokes on arch/i386/kernel/i8253.c (was: 2.6.20-mm1)

* Andrew Morton (akpm@...ux-foundation.org) wrote:
> On Thu, 15 Feb 2007 17:01:27 +0100
> Tilman Schmidt <tilman@...p.cc> wrote:
> 
> > Trying to build 2.6.20-mm1 on i386 with C=1, sparse 0.2 chokes
> > on arch/i386/kernel/i8253.c:
> > 
> >   CHECK   arch/i386/kernel/i8253.c
> > linux/marker.h: No such file or directory
> > include/linux/jiffies.h:18:5: warning: undefined preprocessor identifier 'CONFIG_HZ'
> > include/linux/jiffies.h:20:7: warning: undefined preprocessor identifier 'CONFIG_HZ'
> > include/linux/jiffies.h:22:7: warning: undefined preprocessor identifier 'CONFIG_HZ'
> > include/linux/jiffies.h:24:7: warning: undefined preprocessor identifier 'CONFIG_HZ'
> > include/linux/jiffies.h:26:7: warning: undefined preprocessor identifier 'CONFIG_HZ'
> > include/linux/jiffies.h:28:7: warning: undefined preprocessor identifier 'CONFIG_HZ'
> > include/linux/jiffies.h:30:7: warning: undefined preprocessor identifier 'CONFIG_HZ'
> > include/linux/jiffies.h:33:3: error: You lose.
> > include/linux/jiffies.h:225:5: error: bad constant expression
> > include/asm/module.h:64:2: error: unknown processor family
> > include/asm/processor.h:82:30: error: undefined identifier 'CONFIG_X86_L1_CACHE_SHIFT'
> > include/asm/processor.h:82:30: error: bad constant expression type
> > arch/i386/kernel/i8253.c:120:16: error: Expected ; at end of declaration
> > arch/i386/kernel/i8253.c:120:16: error: got pit_read
> > arch/i386/kernel/i8253.c:128:2: error: Trying to use reserved word 'do' as identifier
> > arch/i386/kernel/i8253.c:128:2: error: Expected ; at end of declaration
> > arch/i386/kernel/i8253.c:128:2: error: got {
> > [loads of similar messages omitted ...]
> > arch/i386/kernel/i8253.c:195:2: error: undefined identifier 'clocksource_pit'
> > arch/i386/kernel/i8253.c:196:9: error: undefined identifier 'clocksource_register'
> > arch/i386/kernel/i8253.c:41:7: error: Expected constant expression in case statement
> > arch/i386/kernel/i8253.c:50:7: error: Expected constant expression in case statement
> 
> Me too.  It's due to the linux-kernel-markers patches.  Mathieu, can you
> take a look please?

I will give a deeper look in sparse, but I should say up front that I
add this to the root build tree Makefile :

LINUXINCLUDE    := -Iinclude \
                   $(if $(KBUILD_SRC),-Iinclude2 -I$(srctree)/include) \
                   -include include/linux/autoconf.h \
                   -include linux/marker.h

I guess sparse is maybe not using this Makefile or variable ?

-- 
Mathieu Desnoyers
Computer Engineering Ph.D. Candidate, École Polytechnique de Montréal
OpenPGP key fingerprint: 8CD5 52C3 8E3C 4140 715F  BA06 3F25 A8FE 3BAE 9A68
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