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| author | Dan Williams <dan.j.williams@intel.com> | 2009-03-31 08:09:39 +0400 |
|---|---|---|
| committer | NeilBrown <neilb@suse.de> | 2009-03-31 08:09:39 +0400 |
| commit | f701d589aa34d7531183c9ac6f7713ba14212b02 (patch) | |
| tree | d388cd7fa54c520f12233470a35ebb0676677e7a /drivers/md/mktables.c | |
| parent | 18b0033491f584a2d79697da714b1ef9d6b27d22 (diff) | |
| download | linux-f701d589aa34d7531183c9ac6f7713ba14212b02.tar.xz | |
md/raid6: move raid6 data processing to raid6_pq.ko
Move the raid6 data processing routines into a standalone module
(raid6_pq) to prepare them to be called from async_tx wrappers and other
non-md drivers/modules. This precludes a circular dependency of raid456
needing the async modules for data processing while those modules in
turn depend on raid456 for the base level synchronous raid6 routines.
To support this move:
1/ The exportable definitions in raid6.h move to include/linux/raid/pq.h
2/ The raid6_call, recovery calls, and table symbols are exported
3/ Extra #ifdef __KERNEL__ statements to enable the userspace raid6test to
compile
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: NeilBrown <neilb@suse.de>
Diffstat (limited to 'drivers/md/mktables.c')
| -rw-r--r-- | drivers/md/mktables.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/drivers/md/mktables.c b/drivers/md/mktables.c index b61d5767aae7..3b1500843bba 100644 --- a/drivers/md/mktables.c +++ b/drivers/md/mktables.c @@ -59,7 +59,7 @@ int main(int argc, char *argv[]) uint8_t v; uint8_t exptbl[256], invtbl[256]; - printf("#include \"raid6.h\"\n"); + printf("#include <linux/raid/pq.h>\n"); /* Compute multiplication table */ printf("\nconst u8 __attribute__((aligned(256)))\n" @@ -76,6 +76,9 @@ int main(int argc, char *argv[]) printf("\t},\n"); } printf("};\n"); + printf("#ifdef __KERNEL__\n"); + printf("EXPORT_SYMBOL(raid6_gfmul);\n"); + printf("#endif\n"); /* Compute power-of-2 table (exponent) */ v = 1; @@ -92,6 +95,9 @@ int main(int argc, char *argv[]) } } printf("};\n"); + printf("#ifdef __KERNEL__\n"); + printf("EXPORT_SYMBOL(raid6_gfexp);\n"); + printf("#endif\n"); /* Compute inverse table x^-1 == x^254 */ printf("\nconst u8 __attribute__((aligned(256)))\n" @@ -104,6 +110,9 @@ int main(int argc, char *argv[]) } } printf("};\n"); + printf("#ifdef __KERNEL__\n"); + printf("EXPORT_SYMBOL(raid6_gfinv);\n"); + printf("#endif\n"); /* Compute inv(2^x + 1) (exponent-xor-inverse) table */ printf("\nconst u8 __attribute__((aligned(256)))\n" @@ -115,6 +124,9 @@ int main(int argc, char *argv[]) (j == 7) ? '\n' : ' '); } printf("};\n"); + printf("#ifdef __KERNEL__\n"); + printf("EXPORT_SYMBOL(raid6_gfexi);\n"); + printf("#endif\n"); return 0; } |