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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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685784aaf3
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>
24 lines
666 B
C
24 lines
666 B
C
#ifndef _XOR_H
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#define _XOR_H
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#include <linux/raid/md.h>
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#define MAX_XOR_BLOCKS 5
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extern void xor_blocks(unsigned int count, unsigned int bytes, void **ptr);
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struct xor_block_template {
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struct xor_block_template *next;
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const char *name;
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int speed;
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void (*do_2)(unsigned long, unsigned long *, unsigned long *);
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void (*do_3)(unsigned long, unsigned long *, unsigned long *,
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unsigned long *);
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void (*do_4)(unsigned long, unsigned long *, unsigned long *,
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unsigned long *, unsigned long *);
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void (*do_5)(unsigned long, unsigned long *, unsigned long *,
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unsigned long *, unsigned long *, unsigned long *);
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};
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#endif
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