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xor: make 'xor_blocks' a library routine for use with async_tx

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The async_tx api tries to use a dma engine for an operation, but will fall
back to an optimized software routine otherwise.  Xor support is
implemented using the raid5 xor routines.  For organizational purposes this
routine is moved to a common area.

The following fixes are also made:
* rename xor_block => xor_blocks, suggested by Adrian Bunk
* ensure that xor.o initializes before md.o in the built-in case
* checkpatch.pl fixes
* mark calibrate_xor_blocks __init, Adrian Bunk

Cc: Adrian Bunk <bunk@stusta.de>
Cc: NeilBrown <neilb@suse.de>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
This commit is contained in:
Dan Williams 2007-07-09 11:56:42 -07:00
parent d379b01e90
commit 685784aaf3
8 changed files with 38 additions and 23 deletions
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2
include/linux/raid/xor.h
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@ -5,7 +5,7 @@
#define MAX_XOR_BLOCKS 5
extern void xor_block(unsigned int count, unsigned int bytes, void **ptr);
extern void xor_blocks(unsigned int count, unsigned int bytes, void **ptr);
struct xor_block_template {
struct xor_block_template *next;