Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/drivers/md/raid6test/Makefile b/drivers/md/raid6test/Makefile
new file mode 100644
index 0000000..5578067
--- /dev/null
+++ b/drivers/md/raid6test/Makefile
@@ -0,0 +1,58 @@
+#
+# This is a simple Makefile to test some of the RAID-6 code
+# from userspace.
+#
+
+CC = gcc
+OPTFLAGS = -O2 # Adjust as desired
+CFLAGS = -I.. -g $(OPTFLAGS)
+LD = ld
+PERL = perl
+
+.c.o:
+ $(CC) $(CFLAGS) -c -o $@ $<
+
+%.c: ../%.c
+ cp -f $< $@
+
+%.uc: ../%.uc
+ cp -f $< $@
+
+all: raid6.o raid6test
+
+raid6.o: raid6int1.o raid6int2.o raid6int4.o raid6int8.o raid6int16.o \
+ raid6int32.o \
+ raid6mmx.o raid6sse1.o raid6sse2.o \
+ raid6recov.o raid6algos.o \
+ raid6tables.o
+ $(LD) -r -o $@ $^
+
+raid6test: raid6.o test.c
+ $(CC) $(CFLAGS) -o raid6test $^
+
+raid6int1.c: raid6int.uc ../unroll.pl
+ $(PERL) ../unroll.pl 1 < raid6int.uc > $@
+
+raid6int2.c: raid6int.uc ../unroll.pl
+ $(PERL) ../unroll.pl 2 < raid6int.uc > $@
+
+raid6int4.c: raid6int.uc ../unroll.pl
+ $(PERL) ../unroll.pl 4 < raid6int.uc > $@
+
+raid6int8.c: raid6int.uc ../unroll.pl
+ $(PERL) ../unroll.pl 8 < raid6int.uc > $@
+
+raid6int16.c: raid6int.uc ../unroll.pl
+ $(PERL) ../unroll.pl 16 < raid6int.uc > $@
+
+raid6int32.c: raid6int.uc ../unroll.pl
+ $(PERL) ../unroll.pl 32 < raid6int.uc > $@
+
+raid6tables.c: mktables
+ ./mktables > raid6tables.c
+
+clean:
+ rm -f *.o mktables mktables.c raid6int.uc raid6*.c raid6test
+
+spotless: clean
+ rm -f *~
diff --git a/drivers/md/raid6test/test.c b/drivers/md/raid6test/test.c
new file mode 100644
index 0000000..0d5cd57
--- /dev/null
+++ b/drivers/md/raid6test/test.c
@@ -0,0 +1,103 @@
+/* -*- linux-c -*- ------------------------------------------------------- *
+ *
+ * Copyright 2002 H. Peter Anvin - All Rights Reserved
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, Inc., 53 Temple Place Ste 330,
+ * Bostom MA 02111-1307, USA; either version 2 of the License, 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 "raid6.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];
+
+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];
+ }
+}
+
+int main(int argc, char *argv[])
+{
+ const struct raid6_calls * const * algo;
+ int i, j;
+ int erra, errb;
+
+ 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++ ) {
+ 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) */
+ } else {
+ printf("algo=%-8s faila=%3d(%c) failb=%3d(%c) %s\n",
+ raid6_call.name,
+ i, (i==NDISKS-2)?'P':'D',
+ j, (j==NDISKS-1)?'Q':(j==NDISKS-2)?'P':'D',
+ (!erra && !errb) ? "OK" :
+ !erra ? "ERRB" :
+ !errb ? "ERRA" :
+ "ERRAB");
+ }
+
+ dataptrs[i] = data[i];
+ dataptrs[j] = data[j];
+ }
+ }
+ }
+ printf("\n");
+ }
+
+ printf("\n");
+ /* Pick the best algorithm test */
+ raid6_select_algo();
+
+ return 0;
+}