[Patch] New zone ZONE_EASY_RECLAIM take 3. (define ZONE_EASY_RECLAIM)[2/5]

[Patch] New zone ZONE_EASY_RECLAIM take 3. (define ZONE_EASY_RECLAIM)[2/5]

[Yasunori Goto]

This defines new zone ZONE_EASY_RECLAIM.
ZONES_SHIFT becomes 3.
And this patch add member of sysctl_lowmem_reserve_ratio[].

Signed-off-by: Yasunori Goto <y-goto@jp.fujitsu.com>

Index: zone_reclaim/include/linux/mmzone.h
===================================================================
--- zone_reclaim.orig/include/linux/mmzone.h	2005-12-10 17:12:58.000000000 +0900
+++ zone_reclaim/include/linux/mmzone.h	2005-12-10 17:13:16.000000000 +0900
@@ -73,9 +73,10 @@ struct per_cpu_pageset {
 #define ZONE_DMA32		1
 #define ZONE_NORMAL		2
 #define ZONE_HIGHMEM		3
+#define ZONE_EASY_RECLAIM	4
 
-#define MAX_NR_ZONES		4	/* Sync this with ZONES_SHIFT */
-#define ZONES_SHIFT		2	/* ceil(log2(MAX_NR_ZONES)) */
+#define MAX_NR_ZONES		5	/* Sync this with ZONES_SHIFT */
+#define ZONES_SHIFT		3	/* ceil(log2(MAX_NR_ZONES)) */
 
 
 /*
Index: zone_reclaim/mm/page_alloc.c
===================================================================
--- zone_reclaim.orig/mm/page_alloc.c	2005-12-10 17:13:15.000000000 +0900
+++ zone_reclaim/mm/page_alloc.c	2005-12-10 17:15:10.000000000 +0900
@@ -66,7 +66,7 @@ static void fastcall free_hot_cold_page(
  * TBD: should special case ZONE_DMA32 machines here - in those we normally
  * don't need any ZONE_NORMAL reservation
  */
-int sysctl_lowmem_reserve_ratio[MAX_NR_ZONES-1] = { 256, 256, 32 };
+int sysctl_lowmem_reserve_ratio[MAX_NR_ZONES-1] = { 256, 256, 256, 32 ,32};
 
 EXPORT_SYMBOL(totalram_pages);
 
@@ -77,7 +77,7 @@ EXPORT_SYMBOL(totalram_pages);
 struct zone *zone_table[1 << ZONETABLE_SHIFT] __read_mostly;
 EXPORT_SYMBOL(zone_table);
 
-static char *zone_names[MAX_NR_ZONES] = { "DMA", "DMA32", "Normal", "HighMem" };
+static char *zone_names[MAX_NR_ZONES] = { "DMA", "DMA32", "Normal", "HighMem", "Easy Reclaim"};
 int min_free_kbytes = 1024;
 
 unsigned long __initdata nr_kernel_pages;

-- 
Yasunori Goto 


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Re: [Patch] New zone ZONE_EASY_RECLAIM take 3. (define ZONE_EASY_RECLAIM)[2/5]

[Joel Schopp]

Sorry for the slow reply.  Hope feedback isn't too late.

> Index: zone_reclaim/include/linux/mmzone.h
> ===================================================================
> --- zone_reclaim.orig/include/linux/mmzone.h	2005-12-10 17:12:58.000000000 +0900
> +++ zone_reclaim/include/linux/mmzone.h	2005-12-10 17:13:16.000000000 +0900
> @@ -73,9 +73,10 @@ struct per_cpu_pageset {
>  #define ZONE_DMA32		1
>  #define ZONE_NORMAL		2
>  #define ZONE_HIGHMEM		3
> +#define ZONE_EASY_RECLAIM	4
>  
> -#define MAX_NR_ZONES		4	/* Sync this with ZONES_SHIFT */
> -#define ZONES_SHIFT		2	/* ceil(log2(MAX_NR_ZONES)) */
> +#define MAX_NR_ZONES		5	/* Sync this with ZONES_SHIFT */
> +#define ZONES_SHIFT		3	/* ceil(log2(MAX_NR_ZONES)) */
>  
>  
>  /*
> Index: zone_reclaim/mm/page_alloc.c
> ===================================================================
> --- zone_reclaim.orig/mm/page_alloc.c	2005-12-10 17:13:15.000000000 +0900
> +++ zone_reclaim/mm/page_alloc.c	2005-12-10 17:15:10.000000000 +0900
> @@ -66,7 +66,7 @@ static void fastcall free_hot_cold_page(
>   * TBD: should special case ZONE_DMA32 machines here - in those we normally
>   * don't need any ZONE_NORMAL reservation
>   */
> -int sysctl_lowmem_reserve_ratio[MAX_NR_ZONES-1] = { 256, 256, 32 };
> +int sysctl_lowmem_reserve_ratio[MAX_NR_ZONES-1] = { 256, 256, 256, 32 ,32};

This line looks wrong.  It looks you are initializing a 4 element array with 5 
elements.

>  
>  EXPORT_SYMBOL(totalram_pages);
>  
> @@ -77,7 +77,7 @@ EXPORT_SYMBOL(totalram_pages);
>  struct zone *zone_table[1 << ZONETABLE_SHIFT] __read_mostly;
>  EXPORT_SYMBOL(zone_table);
>  
> -static char *zone_names[MAX_NR_ZONES] = { "DMA", "DMA32", "Normal", "HighMem" };
> +static char *zone_names[MAX_NR_ZONES] = { "DMA", "DMA32", "Normal", "HighMem", "Easy Reclaim"};
>  int min_free_kbytes = 1024;
>  
>  unsigned long __initdata nr_kernel_pages;
> 

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Re: [Patch] New zone ZONE_EASY_RECLAIM take 3. (define ZONE_EASY_RECLAIM)[2/5]

[Yasunori Goto]

> Sorry for the slow reply.  Hope feedback isn't too late.

Not late. :-)

> >  /*
> > Index: zone_reclaim/mm/page_alloc.c
> > ===================================================================
> > --- zone_reclaim.orig/mm/page_alloc.c	2005-12-10 17:13:15.000000000 +0900
> > +++ zone_reclaim/mm/page_alloc.c	2005-12-10 17:15:10.000000000 +0900
> > @@ -66,7 +66,7 @@ static void fastcall free_hot_cold_page(
> >   * TBD: should special case ZONE_DMA32 machines here - in those we normally
> >   * don't need any ZONE_NORMAL reservation
> >   */
> > -int sysctl_lowmem_reserve_ratio[MAX_NR_ZONES-1] = { 256, 256, 32 };
> > +int sysctl_lowmem_reserve_ratio[MAX_NR_ZONES-1] = { 256, 256, 256, 32 ,32};
> 
> This line looks wrong.  It looks you are initializing a 4 element array with 5 
> elements.

Oops. I made a mistake. Thanks.


-- 
Yasunori Goto 


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