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Message-ID: <20080131162920.GE19700@cs181133002.pp.htv.fi>
Date:	Thu, 31 Jan 2008 18:29:20 +0200
From:	Adrian Bunk <bunk@...nel.org>
To:	Ingo Molnar <mingo@...e.hu>, wli@...omorphy.com
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	linux-kernel@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...or.com>,
	Jeremy Fitzhardinge <jeremy@...p.org>,
	sparclinux@...r.kernel.org
Subject: sparc compile error caused by x86 arch updates

On Thu, Jan 31, 2008 at 05:15:23PM +0100, Ingo Molnar wrote:
> 
> * Adrian Bunk <bunk@...nel.org> wrote:
> 
> > On Thu, Jan 31, 2008 at 05:00:33PM +0100, Ingo Molnar wrote:
> > > 
> > > * Adrian Bunk <bunk@...nel.org> wrote:
> > > 
> > > > You tested x86 but broke more than half a dozen other archtectures, 
> > > > with at least 3 different commits breaking other architectures.
> > > 
> > > Note that all known breakages are fixed in current -git, except for the 
> > > s390 problem that Martin/Nick posted the fix.
> > 
> > What about the breakages caused by commit 
> > a5a19c63f4e55e32dc0bc3d936d7f94793d8b380 (this commit broke the 
> > defconfig compilation on at least avr32, blackfin, sh, sparc and uml)?
> 
> the patch below fixes that.

The sparc breakage (might not have been reported until now and I 
bisected it just a few minutes ago) is caused by the following part of 
commit a5a19c63f4e55e32dc0bc3d936d7f94793d8b380:

--- a/include/linux/swap.h
+++ b/include/linux/swap.h
@@ -6,6 +6,7 @@
 #include <linux/mmzone.h>
 #include <linux/list.h>
 #include <linux/sched.h>
+#include <linux/pagemap.h>
 
 #include <asm/atomic.h>
 #include <asm/page.h>


The compile error with the sparc defconfig is:

<--  snip  -->

...
  CC      init/main.o
In file included from /home/bunk/linux/kernel-2.6/git/linux-2.6/include/linux/highmem.h:24,
                 from /home/bunk/linux/kernel-2.6/git/linux-2.6/include/linux/pagemap.h:10,
                 from /home/bunk/linux/kernel-2.6/git/linux-2.6/include/linux/swap.h:9,
                 from include2/asm/pgtable.h:15,
                 from /home/bunk/linux/kernel-2.6/git/linux-2.6/include/linux/mm.h:39,
                 from /home/bunk/linux/kernel-2.6/git/linux-2.6/include/asm-generic/dma-mapping.h:17,
                 from include2/asm/dma-mapping.h:6,
                 from /home/bunk/linux/kernel-2.6/git/linux-2.6/include/linux/dma-mapping.h:52,
                 from include2/asm/sbus.h:10,
                 from include2/asm/dma.h:13,
                 from /home/bunk/linux/kernel-2.6/git/linux-2.6/include/linux/bootmem.h:8,
                 from /home/bunk/linux/kernel-2.6/git/linux-2.6/init/main.c:26:
include2/asm/highmem.h: In function 'kmap':
include2/asm/highmem.h:60: error: implicit declaration of function 'PageHighMem'
include2/asm/highmem.h:61: error: implicit declaration of function 'page_address'
include2/asm/highmem.h:61: warning: return makes pointer from integer without a cast
In file included from /home/bunk/linux/kernel-2.6/git/linux-2.6/include/linux/swap.h:9,
                 from include2/asm/pgtable.h:15,
                 from /home/bunk/linux/kernel-2.6/git/linux-2.6/include/linux/mm.h:39,
                 from /home/bunk/linux/kernel-2.6/git/linux-2.6/include/asm-generic/dma-mapping.h:17,
                 from include2/asm/dma-mapping.h:6,
                 from /home/bunk/linux/kernel-2.6/git/linux-2.6/include/linux/dma-mapping.h:52,
                 from include2/asm/sbus.h:10,
                 from include2/asm/dma.h:13,
                 from /home/bunk/linux/kernel-2.6/git/linux-2.6/include/linux/bootmem.h:8,
                 from /home/bunk/linux/kernel-2.6/git/linux-2.6/init/main.c:26:
/home/bunk/linux/kernel-2.6/git/linux-2.6/include/linux/pagemap.h: In function 'lock_page':
/home/bunk/linux/kernel-2.6/git/linux-2.6/include/linux/pagemap.h:169: error: implicit declaration of function 'TestSetPageLocked'
/home/bunk/linux/kernel-2.6/git/linux-2.6/include/linux/pagemap.h: In function 'wait_on_page_locked':
/home/bunk/linux/kernel-2.6/git/linux-2.6/include/linux/pagemap.h:199: error: implicit declaration of function 'PageLocked'
/home/bunk/linux/kernel-2.6/git/linux-2.6/include/linux/pagemap.h:200: error: 'PG_locked' undeclared (first use in this function)
/home/bunk/linux/kernel-2.6/git/linux-2.6/include/linux/pagemap.h:200: error: (Each undeclared identifier is reported only once
/home/bunk/linux/kernel-2.6/git/linux-2.6/include/linux/pagemap.h:200: error: for each function it appears in.)
/home/bunk/linux/kernel-2.6/git/linux-2.6/include/linux/pagemap.h: In function 'wait_on_page_writeback':
/home/bunk/linux/kernel-2.6/git/linux-2.6/include/linux/pagemap.h:208: error: implicit declaration of function 'PageWriteback'
/home/bunk/linux/kernel-2.6/git/linux-2.6/include/linux/pagemap.h:209: error: 'PG_writeback' undeclared (first use in this function)
In file included from /home/bunk/linux/kernel-2.6/git/linux-2.6/include/asm-generic/dma-mapping.h:17,
                 from include2/asm/dma-mapping.h:6,
                 from /home/bunk/linux/kernel-2.6/git/linux-2.6/include/linux/dma-mapping.h:52,
                 from include2/asm/sbus.h:10,
                 from include2/asm/dma.h:13,
                 from /home/bunk/linux/kernel-2.6/git/linux-2.6/include/linux/bootmem.h:8,
                 from /home/bunk/linux/kernel-2.6/git/linux-2.6/init/main.c:26:
/home/bunk/linux/kernel-2.6/git/linux-2.6/include/linux/mm.h: At top level:
/home/bunk/linux/kernel-2.6/git/linux-2.6/include/linux/mm.h:556: error: conflicting types for 'page_address'
include2/asm/highmem.h:61: error: previous implicit declaration of 'page_address' was here
make[2]: *** [init/main.o] Error 1
make[1]: *** [init] Error 2
make: *** [sub-make] Error 2

<--  snip  -->


> 	Ingo

cu
Adrian

-- 

       "Is there not promise of rain?" Ling Tan asked suddenly out
        of the darkness. There had been need of rain for many days.
       "Only a promise," Lao Er said.
                                       Pearl S. Buck - Dragon Seed

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