1 files changed, 20 insertions, 0 deletions

diff --git a/lib/raid6/mktables.c b/lib/raid6/mktables.c
index 39787db588b0..e824d088f72c 100644
--- a/lib/raid6/mktables.c
+++ b/lib/raid6/mktables.c
@@ -125,6 +125,26 @@ int main(int argc, char *argv[])
         printf("EXPORT_SYMBOL(raid6_gfexp);\n");
         printf("#endif\n");
 
+        /* Compute log-of-2 table */
+        printf("\nconst u8 __attribute__((aligned(256)))\n"
+               "raid6_gflog[256] =\n" "{\n");
+        for (i = 0; i < 256; i += 8) {
+                printf("\t");
+                for (j = 0; j < 8; j++) {
+                        v = 255;
+                        for (k = 0; k < 256; k++)
+                                if (exptbl[k] == (i + j)) {
+                                        v = k;
+                                        break;
+                                }
+                        printf("0x%02x,%c", v, (j == 7) ? '\n' : ' ');
+                }
+        }
+        printf("};\n");
+        printf("#ifdef __KERNEL__\n");
+        printf("EXPORT_SYMBOL(raid6_gflog);\n");
+        printf("#endif\n");
+
         /* Compute inverse table x^-1 == x^254 */
         printf("\nconst u8 __attribute__((aligned(256)))\n"
                "raid6_gfinv[256] =\n" "{\n");