[PATCH 1/2] mm: Move definition of MIN_MEMORY_BLOCK_SIZE to a header

[PATCH 1/2] mm: Move definition of MIN_MEMORY_BLOCK_SIZE to a header

[Benjamin Herrenschmidt]

The macro MIN_MEMORY_BLOCK_SIZE is currently defined twice in two .c
files, and I need it in a third one to fix a powerpc bug, so let's
first move it into a header

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---

Ingo, Thomas: Who needs to ack the x86 bit ? I'd like to send that
to Linus asap with the powerpc fix.

diff --git a/arch/x86/mm/init_64.c b/arch/x86/mm/init_64.c
index d865c4a..bbaaa00 100644
--- a/arch/x86/mm/init_64.c
+++ b/arch/x86/mm/init_64.c
@@ -28,6 +28,7 @@
 #include <linux/poison.h>
 #include <linux/dma-mapping.h>
 #include <linux/module.h>
+#include <linux/memory.h>
 #include <linux/memory_hotplug.h>
 #include <linux/nmi.h>
 #include <linux/gfp.h>
@@ -895,8 +896,6 @@ const char *arch_vma_name(struct vm_area_struct *vma)
 }
 
 #ifdef CONFIG_X86_UV
-#define MIN_MEMORY_BLOCK_SIZE   (1 << SECTION_SIZE_BITS)
-
 unsigned long memory_block_size_bytes(void)
 {
 	if (is_uv_system()) {
diff --git a/drivers/base/memory.c b/drivers/base/memory.c
index 9f9b235..45d7c8f 100644
--- a/drivers/base/memory.c
+++ b/drivers/base/memory.c
@@ -30,7 +30,6 @@
 static DEFINE_MUTEX(mem_sysfs_mutex);
 
 #define MEMORY_CLASS_NAME	"memory"
-#define MIN_MEMORY_BLOCK_SIZE	(1 << SECTION_SIZE_BITS)
 
 static int sections_per_block;
 
diff --git a/include/linux/memory.h b/include/linux/memory.h
index e1e3b2b..935699b 100644
--- a/include/linux/memory.h
+++ b/include/linux/memory.h
@@ -20,6 +20,8 @@
 #include <linux/compiler.h>
 #include <linux/mutex.h>
 
+#define MIN_MEMORY_BLOCK_SIZE     (1 << SECTION_SIZE_BITS)
+
 struct memory_block {
 	unsigned long start_section_nr;
 	unsigned long end_section_nr;

Re: [PATCH 1/2] mm: Move definition of MIN_MEMORY_BLOCK_SIZE to a header

[Benjamin Herrenschmidt]

On Tue, 2011-06-14 at 10:57 +1000, Benjamin Herrenschmidt wrote:
> The macro MIN_MEMORY_BLOCK_SIZE is currently defined twice in two .c
> files, and I need it in a third one to fix a powerpc bug, so let's
> first move it into a header
> 
> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
> ---
> 
> Ingo, Thomas: Who needs to ack the x86 bit ? I'd like to send that
> to Linus asap with the powerpc fix.

Anybody ? Allo ?

I'm happy to send that to Linus myself but I'd like at least on or two
acks :-)

Cheers,
Ben.

> diff --git a/arch/x86/mm/init_64.c b/arch/x86/mm/init_64.c
> index d865c4a..bbaaa00 100644
> --- a/arch/x86/mm/init_64.c
> +++ b/arch/x86/mm/init_64.c
> @@ -28,6 +28,7 @@
>  #include <linux/poison.h>
>  #include <linux/dma-mapping.h>
>  #include <linux/module.h>
> +#include <linux/memory.h>
>  #include <linux/memory_hotplug.h>
>  #include <linux/nmi.h>
>  #include <linux/gfp.h>
> @@ -895,8 +896,6 @@ const char *arch_vma_name(struct vm_area_struct *vma)
>  }
>  
>  #ifdef CONFIG_X86_UV
> -#define MIN_MEMORY_BLOCK_SIZE   (1 << SECTION_SIZE_BITS)
> -
>  unsigned long memory_block_size_bytes(void)
>  {
>  	if (is_uv_system()) {
> diff --git a/drivers/base/memory.c b/drivers/base/memory.c
> index 9f9b235..45d7c8f 100644
> --- a/drivers/base/memory.c
> +++ b/drivers/base/memory.c
> @@ -30,7 +30,6 @@
>  static DEFINE_MUTEX(mem_sysfs_mutex);
>  
>  #define MEMORY_CLASS_NAME	"memory"
> -#define MIN_MEMORY_BLOCK_SIZE	(1 << SECTION_SIZE_BITS)
>  
>  static int sections_per_block;
>  
> diff --git a/include/linux/memory.h b/include/linux/memory.h
> index e1e3b2b..935699b 100644
> --- a/include/linux/memory.h
> +++ b/include/linux/memory.h
> @@ -20,6 +20,8 @@
>  #include <linux/compiler.h>
>  #include <linux/mutex.h>
>  
> +#define MIN_MEMORY_BLOCK_SIZE     (1 << SECTION_SIZE_BITS)
> +
>  struct memory_block {
>  	unsigned long start_section_nr;
>  	unsigned long end_section_nr;
> 

Re: [PATCH 1/2] mm: Move definition of MIN_MEMORY_BLOCK_SIZE to a header

[Ingo Molnar]

* Benjamin Herrenschmidt <benh@kernel.crashing.org> wrote:

> The macro MIN_MEMORY_BLOCK_SIZE is currently defined twice in two .c
> files, and I need it in a third one to fix a powerpc bug, so let's
> first move it into a header
> 
> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
> ---
> 
> Ingo, Thomas: Who needs to ack the x86 bit ? I'd like to send that
> to Linus asap with the powerpc fix.

Acked-by: Ingo Molnar <mingo@elte.hu>

(btw., you can consider obvious cleanups as being implicitly acked by 
me and don't need to block fixes on me.)

Thanks,

	Ingo

Re: [PATCH 1/2] mm: Move definition of MIN_MEMORY_BLOCK_SIZE to a header

[Benjamin Herrenschmidt]

On Fri, 2011-07-01 at 14:14 +0200, Ingo Molnar wrote:
> * Benjamin Herrenschmidt <benh@kernel.crashing.org> wrote:
> 
> > The macro MIN_MEMORY_BLOCK_SIZE is currently defined twice in two .c
> > files, and I need it in a third one to fix a powerpc bug, so let's
> > first move it into a header
> > 
> > Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
> > ---
> > 
> > Ingo, Thomas: Who needs to ack the x86 bit ? I'd like to send that
> > to Linus asap with the powerpc fix.
> 
> Acked-by: Ingo Molnar <mingo@elte.hu>
> 
> (btw., you can consider obvious cleanups as being implicitly acked by 
> me and don't need to block fixes on me.)

Ok thanks !

Cheers,
Ben.