md: Factor out RAID6 algorithms into lib/

[pandora-kernel.git] / drivers / md / raid6test / test.c

diff --git a/drivers/md/raid6test/test.c b/drivers/md/raid6test/test.c
deleted file mode 100644 (file)
index 7a93031..0000000
--- a/drivers/md/raid6test/test.c
+++ /dev/null
@@ -1,124 +0,0 @@
-/* -*- linux-c -*- ------------------------------------------------------- *
- *
- *   Copyright 2002-2007 H. Peter Anvin - All Rights Reserved
- *
- *   This file is part of the Linux kernel, and is made available under
- *   the terms of the GNU General Public License version 2 or (at your
- *   option) any later version; incorporated herein by reference.
- *
- * ----------------------------------------------------------------------- */
-
-/*
- * raid6test.c
- *
- * Test RAID-6 recovery with various algorithms
- */
-
-#include <stdlib.h>
-#include <stdio.h>
-#include <string.h>
-#include <linux/raid/pq.h>
-
-#define NDISKS         16      /* Including P and Q */
-
-const char raid6_empty_zero_page[PAGE_SIZE] __attribute__((aligned(256)));
-struct raid6_calls raid6_call;
-
-char *dataptrs[NDISKS];
-char data[NDISKS][PAGE_SIZE];
-char recovi[PAGE_SIZE], recovj[PAGE_SIZE];
-
-static void makedata(void)
-{
-       int i, j;
-
-       for (i = 0; i < NDISKS; i++) {
-               for (j = 0; j < PAGE_SIZE; j++)
-                       data[i][j] = rand();
-
-               dataptrs[i] = data[i];
-       }
-}
-
-static char disk_type(int d)
-{
-       switch (d) {
-       case NDISKS-2:
-               return 'P';
-       case NDISKS-1:
-               return 'Q';
-       default:
-               return 'D';
-       }
-}
-
-static int test_disks(int i, int j)
-{
-       int erra, errb;
-
-       memset(recovi, 0xf0, PAGE_SIZE);
-       memset(recovj, 0xba, PAGE_SIZE);
-
-       dataptrs[i] = recovi;
-       dataptrs[j] = recovj;
-
-       raid6_dual_recov(NDISKS, PAGE_SIZE, i, j, (void **)&dataptrs);
-
-       erra = memcmp(data[i], recovi, PAGE_SIZE);
-       errb = memcmp(data[j], recovj, PAGE_SIZE);
-
-       if (i < NDISKS-2 && j == NDISKS-1) {
-               /* We don't implement the DQ failure scenario, since it's
-                  equivalent to a RAID-5 failure (XOR, then recompute Q) */
-               erra = errb = 0;
-       } else {
-               printf("algo=%-8s  faila=%3d(%c)  failb=%3d(%c)  %s\n",
-                      raid6_call.name,
-                      i, disk_type(i),
-                      j, disk_type(j),
-                      (!erra && !errb) ? "OK" :
-                      !erra ? "ERRB" :
-                      !errb ? "ERRA" : "ERRAB");
-       }
-
-       dataptrs[i] = data[i];
-       dataptrs[j] = data[j];
-
-       return erra || errb;
-}
-
-int main(int argc, char *argv[])
-{
-       const struct raid6_calls *const *algo;
-       int i, j;
-       int err = 0;
-
-       makedata();
-
-       for (algo = raid6_algos; *algo; algo++) {
-               if (!(*algo)->valid || (*algo)->valid()) {
-                       raid6_call = **algo;
-
-                       /* Nuke syndromes */
-                       memset(data[NDISKS-2], 0xee, 2*PAGE_SIZE);
-
-                       /* Generate assumed good syndrome */
-                       raid6_call.gen_syndrome(NDISKS, PAGE_SIZE,
-                                               (void **)&dataptrs);
-
-                       for (i = 0; i < NDISKS-1; i++)
-                               for (j = i+1; j < NDISKS; j++)
-                                       err += test_disks(i, j);
-               }
-               printf("\n");
-       }
-
-       printf("\n");
-       /* Pick the best algorithm test */
-       raid6_select_algo();
-
-       if (err)
-               printf("\n*** ERRORS FOUND ***\n");
-
-       return err;
-}