diff options
| author | Christoph Lameter <clameter@sgi.com> | 2008-04-28 02:12:54 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-04-28 08:58:22 -0700 |
| commit | 97965478a66fbdf0f4ad5e4ecc4828f0cb548a45 (patch) | |
| tree | a60bb6c46acdc35d16b2e48f5c13248fc009b35e | |
| parent | ec7cade8c1a3d1ace69b35cc843b181818578dce (diff) | |
mm: Get rid of __ZONE_COUNT
It was used to compensate because MAX_NR_ZONES was not available to the
#ifdefs. Export MAX_NR_ZONES via the new mechanism and get rid of
__ZONE_COUNT.
Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | include/linux/mmzone.h | 28 | ||||
| -rw-r--r-- | kernel/bounds.c | 2 |
2 files changed, 13 insertions, 17 deletions
diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h index c7a51dac441d..c3828497f41d 100644 --- a/include/linux/mmzone.h +++ b/include/linux/mmzone.h @@ -3,6 +3,7 @@ #ifdef __KERNEL__ #ifndef __ASSEMBLY__ +#ifndef __GENERATING_BOUNDS_H #include <linux/spinlock.h> #include <linux/list.h> @@ -15,6 +16,7 @@ #include <linux/seqlock.h> #include <linux/nodemask.h> #include <linux/pageblock-flags.h> +#include <linux/bounds.h> #include <asm/atomic.h> #include <asm/page.h> @@ -129,6 +131,8 @@ struct per_cpu_pageset { #define zone_pcp(__z, __cpu) (&(__z)->pageset[(__cpu)]) #endif +#endif /* !__GENERATING_BOUNDS.H */ + enum zone_type { #ifdef CONFIG_ZONE_DMA /* @@ -177,9 +181,11 @@ enum zone_type { ZONE_HIGHMEM, #endif ZONE_MOVABLE, - MAX_NR_ZONES + __MAX_NR_ZONES }; +#ifndef __GENERATING_BOUNDS_H + /* * When a memory allocation must conform to specific limitations (such * as being suitable for DMA) the caller will pass in hints to the @@ -188,28 +194,15 @@ enum zone_type { * match the requested limits. See gfp_zone() in include/linux/gfp.h */ -/* - * Count the active zones. Note that the use of defined(X) outside - * #if and family is not necessarily defined so ensure we cannot use - * it later. Use __ZONE_COUNT to work out how many shift bits we need. - */ -#define __ZONE_COUNT ( \ - defined(CONFIG_ZONE_DMA) \ - + defined(CONFIG_ZONE_DMA32) \ - + 1 \ - + defined(CONFIG_HIGHMEM) \ - + 1 \ -) -#if __ZONE_COUNT < 2 +#if MAX_NR_ZONES < 2 #define ZONES_SHIFT 0 -#elif __ZONE_COUNT <= 2 +#elif MAX_NR_ZONES <= 2 #define ZONES_SHIFT 1 -#elif __ZONE_COUNT <= 4 +#elif MAX_NR_ZONES <= 4 #define ZONES_SHIFT 2 #else #error ZONES_SHIFT -- too many zones configured adjust calculation #endif -#undef __ZONE_COUNT struct zone { /* Fields commonly accessed by the page allocator */ @@ -1008,6 +1001,7 @@ unsigned long __init node_memmap_size_bytes(int, unsigned long, unsigned long); #define pfn_valid_within(pfn) (1) #endif +#endif /* !__GENERATING_BOUNDS.H */ #endif /* !__ASSEMBLY__ */ #endif /* __KERNEL__ */ #endif /* _LINUX_MMZONE_H */ diff --git a/kernel/bounds.c b/kernel/bounds.c index 9ca2bb30243c..c3c55544db2f 100644 --- a/kernel/bounds.c +++ b/kernel/bounds.c @@ -7,6 +7,7 @@ #define __GENERATING_BOUNDS_H /* Include headers that define the enum constants of interest */ #include <linux/page-flags.h> +#include <linux/mmzone.h> #define DEFINE(sym, val) \ asm volatile("\n->" #sym " %0 " #val : : "i" (val)) @@ -17,5 +18,6 @@ void foo(void) { /* The enum constants to put into include/linux/bounds.h */ DEFINE(NR_PAGEFLAGS, __NR_PAGEFLAGS); + DEFINE(MAX_NR_ZONES, __MAX_NR_ZONES); /* End of constants */ } |