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| author | James Bottomley <james.bottomley@steeleye.com> | 2004-06-29 05:20:29 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2004-06-29 05:20:29 -0700 |
| commit | 4ddc09038885e0906efea13e978be192147ef60f (patch) | |
| tree | e766bb8182f6aad6bb975f69e892c6bb54e30409 /mm | |
| parent | 55be71cfb77dc0a0a59716be3e1ac7946245ef67 (diff) | |
| download | history-4ddc09038885e0906efea13e978be192147ef60f.tar.gz | |
[PATCH] dma_get_required_mask()
This patch implements dma_get_required_mask() which may be used by drivers
to probe the optimal DMA descriptor type they should be implementing on the
platform.
I've also tested it this time with the sym_2 driver...making it chose the
correct descriptors for the platform. (although I don't have a 64 bit
platform with >4GB memory, so I only confirmed it selects the 32 bit
descriptors all the time...)
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/bootmem.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/mm/bootmem.c b/mm/bootmem.c index 00f4661e174b28..966135b90ff28b 100644 --- a/mm/bootmem.c +++ b/mm/bootmem.c @@ -16,6 +16,7 @@ #include <linux/init.h> #include <linux/bootmem.h> #include <linux/mmzone.h> +#include <linux/module.h> #include <asm/dma.h> #include <asm/io.h> @@ -27,6 +28,10 @@ unsigned long max_low_pfn; unsigned long min_low_pfn; unsigned long max_pfn; +EXPORT_SYMBOL(max_pfn); /* This is exported so + * dma_get_required_mask(), which uses + * it, can be an inline function */ + /* return the number of _pages_ that will be allocated for the boot bitmap */ unsigned long __init bootmem_bootmap_pages (unsigned long pages) { |