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| author | kaf24@firebug.cl.cam.ac.uk <kaf24@firebug.cl.cam.ac.uk> | 2006-06-08 16:51:39 +0100 |
|---|---|---|
| committer | kaf24@firebug.cl.cam.ac.uk <kaf24@firebug.cl.cam.ac.uk> | 2006-06-08 16:51:39 +0100 |
| commit | 48cc0bd192b300119bb86158c9f0daf0f0c49be1 (patch) | |
| tree | 8edf766cf25c5f2739d37a99c87d72c30abdfd05 /xen/include/xen/mm.h | |
| parent | 80c6044fb38ff95afbd0f02ca06b23ad80eb7512 (diff) | |
| download | xen-48cc0bd192b300119bb86158c9f0daf0f0c49be1.tar.gz xen-48cc0bd192b300119bb86158c9f0daf0f0c49be1.tar.bz2 xen-48cc0bd192b300119bb86158c9f0daf0f0c49be1.zip | |
[XEN] Reduce default maximum allocation order from 2^20 pages to 2^11.
On x86 this corresponds to a maximum aligned contiguous allocation of 8MB.
This can be overridden by architectures if need be.
Signed-off-by: Keir Fraser <keir@xensource.com>
Diffstat (limited to 'xen/include/xen/mm.h')
| -rw-r--r-- | xen/include/xen/mm.h | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/xen/include/xen/mm.h b/xen/include/xen/mm.h index 327758f2c2..e33fbc2e52 100644 --- a/xen/include/xen/mm.h +++ b/xen/include/xen/mm.h @@ -68,8 +68,11 @@ unsigned long avail_domheap_pages(void); #define ALLOC_DOM_DMA 1 -/* Up to 2^20 pages can be allocated at once. */ -#define MAX_ORDER 20 +#ifdef CONFIG_PAGEALLOC_MAX_ORDER +#define MAX_ORDER CONFIG_PAGEALLOC_MAX_ORDER +#else +#define MAX_ORDER 11 /* 2^11 contiguous pages */ +#endif /* Automatic page scrubbing for dead domains. */ extern struct list_head page_scrub_list; |