Messages in this thread Patch in this message |  | | | Date | Tue, 20 Dec 2005 17:52:08 +0900 | | From | Yasunori Goto <> | | Subject | [Patch] New zone ZONE_EASY_RECLAIM take 4. (define gfp_easy_relcaim)[1/8] |
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This defines __GFP flag for new zone (with GFP_DMA32).
take3 -> take 4: take 3's modification was not enough. __GFP_DMA32 is moved from 0x04 to 0x02 when it has own number to make it easier. __GFP_HIGHMEM and __GFP_EASY_RECLAIM become fixed value.
Signed-off-by: Yasunori Goto <y-goto@jp.fujitsu.com>
Index: zone_reclaim/include/linux/gfp.h =================================================================== --- zone_reclaim.orig/include/linux/gfp.h 2005-12-16 11:28:15.000000000 +0900 +++ zone_reclaim/include/linux/gfp.h 2005-12-19 20:20:51.000000000 +0900 @@ -11,17 +11,21 @@ struct vm_area_struct; /* * GFP bitmasks.. */ -/* Zone modifiers in GFP_ZONEMASK (see linux/mmzone.h - low three bits) */ +/* Zone modifiers in GFP_ZONEMASK (see linux/mmzone.h - low four bits) */ #define __GFP_DMA ((__force gfp_t)0x01u) -#define __GFP_HIGHMEM ((__force gfp_t)0x02u) + #ifdef CONFIG_DMA_IS_DMA32 #define __GFP_DMA32 ((__force gfp_t)0x01) /* ZONE_DMA is ZONE_DMA32 */ #elif BITS_PER_LONG < 64 #define __GFP_DMA32 ((__force gfp_t)0x00) /* ZONE_NORMAL is ZONE_DMA32 */ #else -#define __GFP_DMA32 ((__force gfp_t)0x04) /* Has own ZONE_DMA32 */ +#define __GFP_DMA32 ((__force gfp_t)0x02) /* Has own ZONE_DMA32 */ #endif +#define __GFP_HIGHMEM ((__force gfp_t)0x04u) +#define __GFP_EASY_RECLAIM ((__force gfp_t)0x08u) + + /* * Action modifiers - doesn't change the zoning * @@ -64,7 +68,7 @@ struct vm_area_struct; #define GFP_KERNEL (__GFP_WAIT | __GFP_IO | __GFP_FS) #define GFP_USER (__GFP_WAIT | __GFP_IO | __GFP_FS | __GFP_HARDWALL) #define GFP_HIGHUSER (__GFP_WAIT | __GFP_IO | __GFP_FS | __GFP_HARDWALL | \ - __GFP_HIGHMEM) + __GFP_HIGHMEM | __GFP_EASY_RECLAIM) /* Flag - indicates that the buffer will be suitable for DMA. Ignored on some platforms, used as appropriate on others */ Index: zone_reclaim/include/linux/mmzone.h =================================================================== --- zone_reclaim.orig/include/linux/mmzone.h 2005-12-16 11:28:15.000000000 +0900 +++ zone_reclaim/include/linux/mmzone.h 2005-12-19 20:16:29.000000000 +0900 @@ -93,7 +93,7 @@ struct per_cpu_pageset { * * NOTE! Make sure this matches the zones in <linux/gfp.h> */ -#define GFP_ZONEMASK 0x07 +#define GFP_ZONEMASK 0x0f #define GFP_ZONETYPES 5 /* -- Yasunori Goto
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