[PATCH] include/linux: Add missing include / fix build failure

[PATCH] include/linux: Add missing include / fix build failure

[Peter Huewe]

From: Peter Huewe <peterhuewe@gmx.de>

This patch fixes a build failure[1-2] by adding the missing asm/memory.h
include needed for arch_is_coherent().

Signed-off-by: Peter Huewe <peterhuewe@gmx.de>
---
KernelVersion: linux-next-20101215
Used configs: hackkit_defconfig (arm), ep93xx_defconfig (arm)

References:
[1] http://kisskb.ellerman.id.au/kisskb/buildresult/3651495/
[2] http://kisskb.ellerman.id.au/kisskb/buildresult/3651425/

Error Message:
In file included from include/linux/list_bl.h:5,
                 from include/linux/rculist_bl.h:7,
                 from include/linux/dcache.h:7,
                 from include/linux/fs.h:381,
                 from arch/arm/mm/mmap.c:4:
include/linux/bit_spinlock.h: In function 'bit_spin_unlock':
include/linux/bit_spinlock.h:61: error: implicit declaration of function 'arch_is_coherent'



 include/linux/bit_spinlock.h |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/include/linux/bit_spinlock.h b/include/linux/bit_spinlock.h
index e612575..053fad7 100644
--- a/include/linux/bit_spinlock.h
+++ b/include/linux/bit_spinlock.h
@@ -4,6 +4,7 @@
 #include <linux/kernel.h>
 #include <linux/preempt.h>
 #include <asm/atomic.h>
+#include <asm/memory.h>
 
 /*
  *  bit-based spin_lock()
-- 
1.7.2.2

Re: [PATCH] include/linux: Add missing include / fix build failure

[Stephen Rothwell]

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Hi Peter,

On Wed, 15 Dec 2010 22:04:18 +0100 Peter Huewe <PeterHuewe@gmx.de> wrote:
>
> From: Peter Huewe <peterhuewe@gmx.de>
> 
> This patch fixes a build failure[1-2] by adding the missing asm/memory.h
> include needed for arch_is_coherent().
> 
> Signed-off-by: Peter Huewe <peterhuewe@gmx.de>
> ---
> KernelVersion: linux-next-20101215
> Used configs: hackkit_defconfig (arm), ep93xx_defconfig (arm)
> 
> References:
> [1] http://kisskb.ellerman.id.au/kisskb/buildresult/3651495/
> [2] http://kisskb.ellerman.id.au/kisskb/buildresult/3651425/
> 
> Error Message:
> In file included from include/linux/list_bl.h:5,
>                  from include/linux/rculist_bl.h:7,
>                  from include/linux/dcache.h:7,
>                  from include/linux/fs.h:381,
>                  from arch/arm/mm/mmap.c:4:
> include/linux/bit_spinlock.h: In function 'bit_spin_unlock':
> include/linux/bit_spinlock.h:61: error: implicit declaration of function 'arch_is_coherent'

All (or most) of the above information should be in the commit message
(so above the "Signed-off-by").

-- 
Cheers,
Stephen Rothwell                    sfr@canb.auug.org.au
http://www.canb.auug.org.au/~sfr/

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[PATCH v2] include/linux: Add missing include / fix build failure

[Peter Hüwe]

From: Peter Huewe <peterhuewe@gmx.de>

This patch fixes a build failure[1-2] by adding the missing asm/memory.h
include needed for arch_is_coherent().

Error message:
In file included from include/linux/list_bl.h:5,
                 from include/linux/rculist_bl.h:7,
                 from include/linux/dcache.h:7,
                 from include/linux/fs.h:381,
                 from arch/arm/mm/mmap.c:4:
include/linux/bit_spinlock.h: In function 'bit_spin_unlock':
include/linux/bit_spinlock.h:61: error: implicit declaration of function 
'arch_is_coherent'

KernelVersion: linux-next-20101215
Used configs: hackkit_defconfig (arm), ep93xx_defconfig (arm)

References:
[1] http://kisskb.ellerman.id.au/kisskb/buildresult/3651495/
[2] http://kisskb.ellerman.id.au/kisskb/buildresult/3651425/

Signed-off-by: Peter Huewe <peterhuewe@gmx.de>
---
v2:
moved additional information in the commit message.

 include/linux/bit_spinlock.h |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/include/linux/bit_spinlock.h b/include/linux/bit_spinlock.h
index e612575..053fad7 100644
--- a/include/linux/bit_spinlock.h
+++ b/include/linux/bit_spinlock.h
@@ -4,6 +4,7 @@
 #include <linux/kernel.h>
 #include <linux/preempt.h>
 #include <asm/atomic.h>
+#include <asm/memory.h>
 
 /*
  *  bit-based spin_lock()
-- 
1.7.2.2

Re: [PATCH v2] include/linux: Add missing include / fix build failure

[Nick Piggin]

Hi Peter,

Thanks for this.

On Thu, Dec 16, 2010 at 12:40:54AM +0100, Peter Hüwe wrote:
> From: Peter Huewe <peterhuewe@gmx.de>
> 
> This patch fixes a build failure[1-2] by adding the missing asm/memory.h
> include needed for arch_is_coherent().
> 
> Error message:
> In file included from include/linux/list_bl.h:5,
>                  from include/linux/rculist_bl.h:7,
>                  from include/linux/dcache.h:7,
>                  from include/linux/fs.h:381,
>                  from arch/arm/mm/mmap.c:4:
> include/linux/bit_spinlock.h: In function 'bit_spin_unlock':
> include/linux/bit_spinlock.h:61: error: implicit declaration of function 
> 'arch_is_coherent'
> 
> KernelVersion: linux-next-20101215
> Used configs: hackkit_defconfig (arm), ep93xx_defconfig (arm)
> 
> References:
> [1] http://kisskb.ellerman.id.au/kisskb/buildresult/3651495/
> [2] http://kisskb.ellerman.id.au/kisskb/buildresult/3651425/
> 
> Signed-off-by: Peter Huewe <peterhuewe@gmx.de>
> ---
> v2:
> moved additional information in the commit message.
> 
>  include/linux/bit_spinlock.h |    1 +
>  1 files changed, 1 insertions(+), 0 deletions(-)
> 
> diff --git a/include/linux/bit_spinlock.h b/include/linux/bit_spinlock.h
> index e612575..053fad7 100644
> --- a/include/linux/bit_spinlock.h
> +++ b/include/linux/bit_spinlock.h
> @@ -4,6 +4,7 @@
>  #include <linux/kernel.h>
>  #include <linux/preempt.h>
>  #include <asm/atomic.h>
> +#include <asm/memory.h>
>  
>  /*
>   *  bit-based spin_lock()

The problem is actually in ARM's asm/atomic.h file -- they declare the
smp_mb__before_clear_bit() etc. without providing the necessary includes
to actually call it. Can you include asm/memory.h in there?

Thanks,
Nick