lib/raid6: Add SSSE3 optimized recovery functions
Add SSSE3 optimized recovery functions, as well as a system
for selecting the most appropriate recovery functions to use.
Originally-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Jim Kukunas <james.t.kukunas@linux.intel.com>
Signed-off-by: NeilBrown <neilb@suse.de>
diff --git a/lib/raid6/mktables.c b/lib/raid6/mktables.c
index 8a37809..39787db 100644
--- a/lib/raid6/mktables.c
+++ b/lib/raid6/mktables.c
@@ -81,6 +81,31 @@
printf("EXPORT_SYMBOL(raid6_gfmul);\n");
printf("#endif\n");
+ /* Compute vector multiplication table */
+ printf("\nconst u8 __attribute__((aligned(256)))\n"
+ "raid6_vgfmul[256][32] =\n"
+ "{\n");
+ for (i = 0; i < 256; i++) {
+ printf("\t{\n");
+ for (j = 0; j < 16; j += 8) {
+ printf("\t\t");
+ for (k = 0; k < 8; k++)
+ printf("0x%02x,%c", gfmul(i, j + k),
+ (k == 7) ? '\n' : ' ');
+ }
+ for (j = 0; j < 16; j += 8) {
+ printf("\t\t");
+ for (k = 0; k < 8; k++)
+ printf("0x%02x,%c", gfmul(i, (j + k) << 4),
+ (k == 7) ? '\n' : ' ');
+ }
+ printf("\t},\n");
+ }
+ printf("};\n");
+ printf("#ifdef __KERNEL__\n");
+ printf("EXPORT_SYMBOL(raid6_vgfmul);\n");
+ printf("#endif\n");
+
/* Compute power-of-2 table (exponent) */
v = 1;
printf("\nconst u8 __attribute__((aligned(256)))\n"