71 files changed, 1322 insertions, 517 deletions

diff --git a/lib/Kconfig b/lib/Kconfig
index 028aba9e72af..a0e5900a9d85 100644
--- a/lib/Kconfig
+++ b/lib/Kconfig
@@ -29,6 +29,10 @@ config GENERIC_IOMAP
         bool
         select GENERIC_PCI_IOMAP
 
+config GENERIC_IO
+        boolean
+        default n
+
 config CRC_CCITT
         tristate "CRC-CCITT functions"
         help
@@ -61,14 +65,67 @@ config CRC_ITU_T
           functions require M here.
 
 config CRC32
-        tristate "CRC32 functions"
+        tristate "CRC32/CRC32c functions"
         default y
         select BITREVERSE
         help
           This option is provided for the case where no in-kernel-tree
-          modules require CRC32 functions, but a module built outside the
-          kernel tree does. Such modules that use library CRC32 functions
-          require M here.
+          modules require CRC32/CRC32c functions, but a module built outside
+          the kernel tree does. Such modules that use library CRC32/CRC32c
+          functions require M here.
+
+config CRC32_SELFTEST
+        bool "CRC32 perform self test on init"
+        default n
+        depends on CRC32
+        help
+          This option enables the CRC32 library functions to perform a
+          self test on initialization. The self test computes crc32_le
+          and crc32_be over byte strings with random alignment and length
+          and computes the total elapsed time and number of bytes processed.
+
+choice
+        prompt "CRC32 implementation"
+        depends on CRC32
+        default CRC32_SLICEBY8
+
+config CRC32_SLICEBY8
+        bool "Slice by 8 bytes"
+        help
+          Calculate checksum 8 bytes at a time with a clever slicing algorithm.
+          This is the fastest algorithm, but comes with a 8KiB lookup table.
+          Most modern processors have enough cache to hold this table without
+          thrashing the cache.
+
+          This is the default implementation choice.  Choose this one unless
+          you have a good reason not to.
+
+config CRC32_SLICEBY4
+        bool "Slice by 4 bytes"
+        help
+          Calculate checksum 4 bytes at a time with a clever slicing algorithm.
+          This is a bit slower than slice by 8, but has a smaller 4KiB lookup
+          table.
+
+          Only choose this option if you know what you are doing.
+
+config CRC32_SARWATE
+        bool "Sarwate's Algorithm (one byte at a time)"
+        help
+          Calculate checksum a byte at a time using Sarwate's algorithm.  This
+          is not particularly fast, but has a small 256 byte lookup table.
+
+          Only choose this option if you know what you are doing.
+
+config CRC32_BIT
+        bool "Classic Algorithm (one bit at a time)"
+        help
+          Calculate checksum one bit at a time.  This is VERY slow, but has
+          no lookup table.  This is provided as a debugging option.
+
+          Only choose this option if you are debugging crc32.
+
+endchoice
 
 config CRC7
         tristate "CRC7 functions"
@@ -224,6 +281,7 @@ config BTREE
 config HAS_IOMEM
         boolean
         depends on !NO_IOMEM
+        select GENERIC_IO
         default y
 
 config HAS_IOPORT
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index 05037dc9bde7..f7af95d304c5 100644
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -184,7 +184,7 @@ config LOCKUP_DETECTOR
 
 config HARDLOCKUP_DETECTOR
         def_bool LOCKUP_DETECTOR && PERF_EVENTS && HAVE_PERF_EVENTS_NMI && \
-                 !ARCH_HAS_NMI_WATCHDOG
+                 !HAVE_NMI_WATCHDOG
 
 config BOOTPARAM_HARDLOCKUP_PANIC
         bool "Panic (Reboot) On Hard Lockups"
@@ -1141,14 +1141,6 @@ config LATENCYTOP
           Enable this option if you want to use the LatencyTOP tool
           to find out which userspace is blocking on what kernel operations.
 
-config SYSCTL_SYSCALL_CHECK
-        bool "Sysctl checks"
-        depends on SYSCTL
-        ---help---
-          sys_sysctl uses binary paths that have been found challenging
-          to properly maintain and use. This enables checks that help
-          you to keep things correct.
-
 source mm/Kconfig.debug
 source kernel/trace/Kconfig
 
diff --git a/lib/argv_split.c b/lib/argv_split.c
index 4b1b083f219c..1e9a6cbc3689 100644
--- a/lib/argv_split.c
+++ b/lib/argv_split.c
@@ -6,7 +6,7 @@
 #include <linux/ctype.h>
 #include <linux/string.h>
 #include <linux/slab.h>
-#include <linux/module.h>
+#include <linux/export.h>
 
 static const char *skip_arg(const char *cp)
 {
diff --git a/lib/atomic64.c b/lib/atomic64.c
index 3975470caf4f..978537809d84 100644
--- a/lib/atomic64.c
+++ b/lib/atomic64.c
@@ -13,7 +13,7 @@
 #include <linux/cache.h>
 #include <linux/spinlock.h>
 #include <linux/init.h>
-#include <linux/module.h>
+#include <linux/export.h>
 #include <linux/atomic.h>
 
 /*
diff --git a/lib/atomic64_test.c b/lib/atomic64_test.c
index 0c33cde2a1e6..cb99b91c3a1d 100644
--- a/lib/atomic64_test.c
+++ b/lib/atomic64_test.c
@@ -9,6 +9,7 @@
  * (at your option) any later version.
  */
 #include <linux/init.h>
+#include <linux/bug.h>
 #include <linux/kernel.h>
 #include <linux/atomic.h>
 
diff --git a/lib/average.c b/lib/average.c
index 5576c2841496..99a67e662b3c 100644
--- a/lib/average.c
+++ b/lib/average.c
@@ -5,8 +5,9 @@
  * Version 2.  See the file COPYING for more details.
  */
 
-#include <linux/module.h>
+#include <linux/export.h>
 #include <linux/average.h>
+#include <linux/kernel.h>
 #include <linux/bug.h>
 #include <linux/log2.h>
 
diff --git a/lib/bcd.c b/lib/bcd.c
index d74257fd0fe7..55efaf742346 100644
--- a/lib/bcd.c
+++ b/lib/bcd.c
@@ -1,5 +1,5 @@
 #include <linux/bcd.h>
-#include <linux/module.h>
+#include <linux/export.h>
 
 unsigned bcd2bin(unsigned char val)
 {
diff --git a/lib/bitmap.c b/lib/bitmap.c
index 0d4a127dd9b3..b5a8b6ad2454 100644
--- a/lib/bitmap.c
+++ b/lib/bitmap.c
@@ -5,11 +5,13 @@
  * This source code is licensed under the GNU General Public License,
  * Version 2.  See the file COPYING for more details.
  */
-#include <linux/module.h>
+#include <linux/export.h>
+#include <linux/thread_info.h>
 #include <linux/ctype.h>
 #include <linux/errno.h>
 #include <linux/bitmap.h>
 #include <linux/bitops.h>
+#include <linux/bug.h>
 #include <asm/uaccess.h>
 
 /*
diff --git a/lib/bsearch.c b/lib/bsearch.c
index 5b54758e2afb..e33c179089db 100644
--- a/lib/bsearch.c
+++ b/lib/bsearch.c
@@ -9,7 +9,7 @@
  * published by the Free Software Foundation; version 2.
  */
 
-#include <linux/module.h>
+#include <linux/export.h>
 #include <linux/bsearch.h>
 
 /*
diff --git a/lib/check_signature.c b/lib/check_signature.c
index fd6af199247b..6b49797980c4 100644
--- a/lib/check_signature.c
+++ b/lib/check_signature.c
@@ -1,5 +1,5 @@
 #include <linux/io.h>
-#include <linux/module.h>
+#include <linux/export.h>
 
 /**
  *      check_signature         -       find BIOS signatures
diff --git a/lib/checksum.c b/lib/checksum.c
index 8df2f91e6d98..12dceb27ff20 100644
--- a/lib/checksum.c
+++ b/lib/checksum.c
@@ -32,7 +32,7 @@
 /* Revised by Kenneth Albanowski for m68knommu. Basic problem: unaligned access
  kills, so most of the assembly has to go. */
 
-#include <linux/module.h>
+#include <linux/export.h>
 #include <net/checksum.h>
 
 #include <asm/byteorder.h>
diff --git a/lib/cmdline.c b/lib/cmdline.c
index f5f3ad8b62ff..eb6791188cf5 100644
--- a/lib/cmdline.c
+++ b/lib/cmdline.c
@@ -12,7 +12,7 @@
  *
  */
 
-#include <linux/module.h>
+#include <linux/export.h>
 #include <linux/kernel.h>
 #include <linux/string.h>
 
diff --git a/lib/cpu_rmap.c b/lib/cpu_rmap.c
index 987acfafeb83..145dec5267c9 100644
--- a/lib/cpu_rmap.c
+++ b/lib/cpu_rmap.c
@@ -11,7 +11,7 @@
 #ifdef CONFIG_GENERIC_HARDIRQS
 #include <linux/interrupt.h>
 #endif
-#include <linux/module.h>
+#include <linux/export.h>
 
 /*
  * These functions maintain a mapping from CPUs to some ordered set of
diff --git a/lib/cpumask.c b/lib/cpumask.c
index af3e5817de98..0b660118ed91 100644
--- a/lib/cpumask.c
+++ b/lib/cpumask.c
@@ -2,7 +2,7 @@
 #include <linux/kernel.h>
 #include <linux/bitops.h>
 #include <linux/cpumask.h>
-#include <linux/module.h>
+#include <linux/export.h>
 #include <linux/bootmem.h>
 
 int __first_cpu(const cpumask_t *srcp)
diff --git a/lib/crc32.c b/lib/crc32.c
index 4b35d2b4437c..b0d278fb1d91 100644
--- a/lib/crc32.c
+++ b/lib/crc32.c
@@ -1,4 +1,8 @@
 /*
+ * Aug 8, 2011 Bob Pearson with help from Joakim Tjernlund and George Spelvin
+ * cleaned up code to current version of sparse and added the slicing-by-8
+ * algorithm to the closely similar existing slicing-by-4 algorithm.
+ *
  * Oct 15, 2000 Matt Domsch <Matt_Domsch@dell.com>
  * Nicer crc32 functions/docs submitted by linux@horizon.com.  Thanks!
  * Code was from the public domain, copyright abandoned.  Code was
@@ -20,52 +24,58 @@
  * Version 2.  See the file COPYING for more details.
  */
 
+/* see: Documentation/crc32.txt for a description of algorithms */
+
 #include <linux/crc32.h>
-#include <linux/kernel.h>
 #include <linux/module.h>
-#include <linux/compiler.h>
 #include <linux/types.h>
-#include <linux/init.h>
-#include <linux/atomic.h>
 #include "crc32defs.h"
-#if CRC_LE_BITS == 8
-# define tole(x) __constant_cpu_to_le32(x)
+
+#if CRC_LE_BITS > 8
+# define tole(x) ((__force u32) __constant_cpu_to_le32(x))
 #else
 # define tole(x) (x)
 #endif
 
-#if CRC_BE_BITS == 8
-# define tobe(x) __constant_cpu_to_be32(x)
+#if CRC_BE_BITS > 8
+# define tobe(x) ((__force u32) __constant_cpu_to_be32(x))
 #else
 # define tobe(x) (x)
 #endif
+
 #include "crc32table.h"
 
 MODULE_AUTHOR("Matt Domsch <Matt_Domsch@dell.com>");
-MODULE_DESCRIPTION("Ethernet CRC32 calculations");
+MODULE_DESCRIPTION("Various CRC32 calculations");
 MODULE_LICENSE("GPL");
 
-#if CRC_LE_BITS == 8 || CRC_BE_BITS == 8
+#if CRC_LE_BITS > 8 || CRC_BE_BITS > 8
 
+/* implements slicing-by-4 or slicing-by-8 algorithm */
 static inline u32
 crc32_body(u32 crc, unsigned char const *buf, size_t len, const u32 (*tab)[256])
 {
 # ifdef __LITTLE_ENDIAN
 #  define DO_CRC(x) crc = t0[(crc ^ (x)) & 255] ^ (crc >> 8)
-#  define DO_CRC4 crc = t3[(crc) & 255] ^ \
-                t2[(crc >> 8) & 255] ^ \
-                t1[(crc >> 16) & 255] ^ \
-                t0[(crc >> 24) & 255]
+#  define DO_CRC4 (t3[(q) & 255] ^ t2[(q >> 8) & 255] ^ \
+                   t1[(q >> 16) & 255] ^ t0[(q >> 24) & 255])
+#  define DO_CRC8 (t7[(q) & 255] ^ t6[(q >> 8) & 255] ^ \
+                   t5[(q >> 16) & 255] ^ t4[(q >> 24) & 255])
 # else
 #  define DO_CRC(x) crc = t0[((crc >> 24) ^ (x)) & 255] ^ (crc << 8)
-#  define DO_CRC4 crc = t0[(crc) & 255] ^ \
-                t1[(crc >> 8) & 255] ^  \
-                t2[(crc >> 16) & 255] ^ \
-                t3[(crc >> 24) & 255]
+#  define DO_CRC4 (t0[(q) & 255] ^ t1[(q >> 8) & 255] ^ \
+                   t2[(q >> 16) & 255] ^ t3[(q >> 24) & 255])
+#  define DO_CRC8 (t4[(q) & 255] ^ t5[(q >> 8) & 255] ^ \
+                   t6[(q >> 16) & 255] ^ t7[(q >> 24) & 255])
 # endif
         const u32 *b;
         size_t    rem_len;
+# ifdef CONFIG_X86
+        size_t i;
+# endif
         const u32 *t0=tab[0], *t1=tab[1], *t2=tab[2], *t3=tab[3];
+        const u32 *t4 = tab[4], *t5 = tab[5], *t6 = tab[6], *t7 = tab[7];
+        u32 q;
 
         /* Align it */
         if (unlikely((long)buf & 3 && len)) {
@@ -73,27 +83,51 @@ crc32_body(u32 crc, unsigned char const *buf, size_t len, const u32 (*tab)[256])
                         DO_CRC(*buf++);
                 } while ((--len) && ((long)buf)&3);
         }
+
+# if CRC_LE_BITS == 32
         rem_len = len & 3;
-        /* load data 32 bits wide, xor data 32 bits wide. */
         len = len >> 2;
+# else
+        rem_len = len & 7;
+        len = len >> 3;
+# endif
+
         b = (const u32 *)buf;
+# ifdef CONFIG_X86
+        --b;
+        for (i = 0; i < len; i++) {
+# else
         for (--b; len; --len) {
-                crc ^= *++b; /* use pre increment for speed */
-                DO_CRC4;
+# endif
+                q = crc ^ *++b; /* use pre increment for speed */
+# if CRC_LE_BITS == 32
+                crc = DO_CRC4;
+# else
+                crc = DO_CRC8;
+                q = *++b;
+                crc ^= DO_CRC4;
+# endif
         }
         len = rem_len;
         /* And the last few bytes */
         if (len) {
                 u8 *p = (u8 *)(b + 1) - 1;
+# ifdef CONFIG_X86
+                for (i = 0; i < len; i++)
+                        DO_CRC(*++p); /* use pre increment for speed */
+# else
                 do {
                         DO_CRC(*++p); /* use pre increment for speed */
                 } while (--len);
+# endif
         }
         return crc;
 #undef DO_CRC
 #undef DO_CRC4
+#undef DO_CRC8
 }
 #endif
+
 /**
  * crc32_le() - Calculate bitwise little-endian Ethernet AUTODIN II CRC32
  * @crc: seed value for computation.  ~0 for Ethernet, sometimes 0 for
@@ -101,53 +135,66 @@ crc32_body(u32 crc, unsigned char const *buf, size_t len, const u32 (*tab)[256])
  * @p: pointer to buffer over which CRC is run
  * @len: length of buffer @p
  */
-u32 __pure crc32_le(u32 crc, unsigned char const *p, size_t len);
-
-#if CRC_LE_BITS == 1
-/*
- * In fact, the table-based code will work in this case, but it can be
- * simplified by inlining the table in ?: form.
- */
-
-u32 __pure crc32_le(u32 crc, unsigned char const *p, size_t len)
+static inline u32 __pure crc32_le_generic(u32 crc, unsigned char const *p,
+                                          size_t len, const u32 (*tab)[256],
+                                          u32 polynomial)
 {
+#if CRC_LE_BITS == 1
         int i;
         while (len--) {
                 crc ^= *p++;
                 for (i = 0; i < 8; i++)
-                        crc = (crc >> 1) ^ ((crc & 1) ? CRCPOLY_LE : 0);
+                        crc = (crc >> 1) ^ ((crc & 1) ? polynomial : 0);
+        }
+# elif CRC_LE_BITS == 2
+        while (len--) {
+                crc ^= *p++;
+                crc = (crc >> 2) ^ tab[0][crc & 3];
+                crc = (crc >> 2) ^ tab[0][crc & 3];
+                crc = (crc >> 2) ^ tab[0][crc & 3];
+                crc = (crc >> 2) ^ tab[0][crc & 3];
         }
-        return crc;
-}
-#else                           /* Table-based approach */
-
-u32 __pure crc32_le(u32 crc, unsigned char const *p, size_t len)
-{
-# if CRC_LE_BITS == 8
-        const u32      (*tab)[] = crc32table_le;
-
-        crc = __cpu_to_le32(crc);
-        crc = crc32_body(crc, p, len, tab);
-        return __le32_to_cpu(crc);
 # elif CRC_LE_BITS == 4
         while (len--) {
                 crc ^= *p++;
-                crc = (crc >> 4) ^ crc32table_le[crc & 15];
-                crc = (crc >> 4) ^ crc32table_le[crc & 15];
+                crc = (crc >> 4) ^ tab[0][crc & 15];
+                crc = (crc >> 4) ^ tab[0][crc & 15];
         }
-        return crc;
-# elif CRC_LE_BITS == 2
+# elif CRC_LE_BITS == 8
+        /* aka Sarwate algorithm */
         while (len--) {
                 crc ^= *p++;
-                crc = (crc >> 2) ^ crc32table_le[crc & 3];
-                crc = (crc >> 2) ^ crc32table_le[crc & 3];
-                crc = (crc >> 2) ^ crc32table_le[crc & 3];
-                crc = (crc >> 2) ^ crc32table_le[crc & 3];
+                crc = (crc >> 8) ^ tab[0][crc & 255];
         }
+# else
+        crc = (__force u32) __cpu_to_le32(crc);
+        crc = crc32_body(crc, p, len, tab);
+        crc = __le32_to_cpu((__force __le32)crc);
+#endif
         return crc;
-# endif
+}
+
+#if CRC_LE_BITS == 1
+u32 __pure crc32_le(u32 crc, unsigned char const *p, size_t len)
+{
+        return crc32_le_generic(crc, p, len, NULL, CRCPOLY_LE);
+}
+u32 __pure __crc32c_le(u32 crc, unsigned char const *p, size_t len)
+{
+        return crc32_le_generic(crc, p, len, NULL, CRC32C_POLY_LE);
+}
+#else
+u32 __pure crc32_le(u32 crc, unsigned char const *p, size_t len)
+{
+        return crc32_le_generic(crc, p, len, crc32table_le, CRCPOLY_LE);
+}
+u32 __pure __crc32c_le(u32 crc, unsigned char const *p, size_t len)
+{
+        return crc32_le_generic(crc, p, len, crc32ctable_le, CRC32C_POLY_LE);
 }
 #endif
+EXPORT_SYMBOL(crc32_le);
+EXPORT_SYMBOL(__crc32c_le);
 
 /**
  * crc32_be() - Calculate bitwise big-endian Ethernet AUTODIN II CRC32
@@ -156,317 +203,913 @@ u32 __pure crc32_le(u32 crc, unsigned char const *p, size_t len)
  * @p: pointer to buffer over which CRC is run
  * @len: length of buffer @p
  */
-u32 __pure crc32_be(u32 crc, unsigned char const *p, size_t len);
-
-#if CRC_BE_BITS == 1
-/*
- * In fact, the table-based code will work in this case, but it can be
- * simplified by inlining the table in ?: form.
- */
-
-u32 __pure crc32_be(u32 crc, unsigned char const *p, size_t len)
+static inline u32 __pure crc32_be_generic(u32 crc, unsigned char const *p,
+                                          size_t len, const u32 (*tab)[256],
+                                          u32 polynomial)
 {
+#if CRC_BE_BITS == 1
         int i;
         while (len--) {
                 crc ^= *p++ << 24;
                 for (i = 0; i < 8; i++)
                         crc =
-                            (crc << 1) ^ ((crc & 0x80000000) ? CRCPOLY_BE :
+                            (crc << 1) ^ ((crc & 0x80000000) ? polynomial :
                                           0);
         }
-        return crc;
-}
-
-#else                           /* Table-based approach */
-u32 __pure crc32_be(u32 crc, unsigned char const *p, size_t len)
-{
-# if CRC_BE_BITS == 8
-        const u32      (*tab)[] = crc32table_be;
-
-        crc = __cpu_to_be32(crc);
-        crc = crc32_body(crc, p, len, tab);
-        return __be32_to_cpu(crc);
+# elif CRC_BE_BITS == 2
+        while (len--) {
+                crc ^= *p++ << 24;
+                crc = (crc << 2) ^ tab[0][crc >> 30];
+                crc = (crc << 2) ^ tab[0][crc >> 30];
+                crc = (crc << 2) ^ tab[0][crc >> 30];
+                crc = (crc << 2) ^ tab[0][crc >> 30];
+        }
 # elif CRC_BE_BITS == 4
         while (len--) {
                 crc ^= *p++ << 24;
-                crc = (crc << 4) ^ crc32table_be[crc >> 28];
-                crc = (crc << 4) ^ crc32table_be[crc >> 28];
+                crc = (crc << 4) ^ tab[0][crc >> 28];
+                crc = (crc << 4) ^ tab[0][crc >> 28];
         }
-        return crc;
-# elif CRC_BE_BITS == 2
+# elif CRC_BE_BITS == 8
         while (len--) {
                 crc ^= *p++ << 24;
-                crc = (crc << 2) ^ crc32table_be[crc >> 30];
-                crc = (crc << 2) ^ crc32table_be[crc >> 30];
-                crc = (crc << 2) ^ crc32table_be[crc >> 30];
-                crc = (crc << 2) ^ crc32table_be[crc >> 30];
+                crc = (crc << 8) ^ tab[0][crc >> 24];
         }
-        return crc;
+# else
+        crc = (__force u32) __cpu_to_be32(crc);
+        crc = crc32_body(crc, p, len, tab);
+        crc = __be32_to_cpu((__force __be32)crc);
 # endif
+        return crc;
 }
-#endif
 
-EXPORT_SYMBOL(crc32_le);
+#if CRC_LE_BITS == 1
+u32 __pure crc32_be(u32 crc, unsigned char const *p, size_t len)
+{
+        return crc32_be_generic(crc, p, len, NULL, CRCPOLY_BE);
+}
+#else
+u32 __pure crc32_be(u32 crc, unsigned char const *p, size_t len)
+{
+        return crc32_be_generic(crc, p, len, crc32table_be, CRCPOLY_BE);
+}
+#endif
 EXPORT_SYMBOL(crc32_be);
 
-/*
- * A brief CRC tutorial.
- *
- * A CRC is a long-division remainder.  You add the CRC to the message,
- * and the whole thing (message+CRC) is a multiple of the given
- * CRC polynomial.  To check the CRC, you can either check that the
- * CRC matches the recomputed value, *or* you can check that the
- * remainder computed on the message+CRC is 0.  This latter approach
- * is used by a lot of hardware implementations, and is why so many
- * protocols put the end-of-frame flag after the CRC.
- *
- * It's actually the same long division you learned in school, except that
- * - We're working in binary, so the digits are only 0 and 1, and
- * - When dividing polynomials, there are no carries.  Rather than add and
- *   subtract, we just xor.  Thus, we tend to get a bit sloppy about
- *   the difference between adding and subtracting.
- *
- * A 32-bit CRC polynomial is actually 33 bits long.  But since it's
- * 33 bits long, bit 32 is always going to be set, so usually the CRC
- * is written in hex with the most significant bit omitted.  (If you're
- * familiar with the IEEE 754 floating-point format, it's the same idea.)
- *
- * Note that a CRC is computed over a string of *bits*, so you have
- * to decide on the endianness of the bits within each byte.  To get
- * the best error-detecting properties, this should correspond to the
- * order they're actually sent.  For example, standard RS-232 serial is
- * little-endian; the most significant bit (sometimes used for parity)
- * is sent last.  And when appending a CRC word to a message, you should
- * do it in the right order, matching the endianness.
- *
- * Just like with ordinary division, the remainder is always smaller than
- * the divisor (the CRC polynomial) you're dividing by.  Each step of the
- * division, you take one more digit (bit) of the dividend and append it
- * to the current remainder.  Then you figure out the appropriate multiple
- * of the divisor to subtract to being the remainder back into range.
- * In binary, it's easy - it has to be either 0 or 1, and to make the
- * XOR cancel, it's just a copy of bit 32 of the remainder.
- *
- * When computing a CRC, we don't care about the quotient, so we can
- * throw the quotient bit away, but subtract the appropriate multiple of
- * the polynomial from the remainder and we're back to where we started,
- * ready to process the next bit.
- *
- * A big-endian CRC written this way would be coded like:
- * for (i = 0; i < input_bits; i++) {
- *      multiple = remainder & 0x80000000 ? CRCPOLY : 0;
- *      remainder = (remainder << 1 | next_input_bit()) ^ multiple;
- * }
- * Notice how, to get at bit 32 of the shifted remainder, we look
- * at bit 31 of the remainder *before* shifting it.
- *
- * But also notice how the next_input_bit() bits we're shifting into
- * the remainder don't actually affect any decision-making until
- * 32 bits later.  Thus, the first 32 cycles of this are pretty boring.
- * Also, to add the CRC to a message, we need a 32-bit-long hole for it at
- * the end, so we have to add 32 extra cycles shifting in zeros at the
- * end of every message,
- *
- * So the standard trick is to rearrage merging in the next_input_bit()
- * until the moment it's needed.  Then the first 32 cycles can be precomputed,
- * and merging in the final 32 zero bits to make room for the CRC can be
- * skipped entirely.
- * This changes the code to:
- * for (i = 0; i < input_bits; i++) {
- *      remainder ^= next_input_bit() << 31;
- *      multiple = (remainder & 0x80000000) ? CRCPOLY : 0;
- *      remainder = (remainder << 1) ^ multiple;
- * }
- * With this optimization, the little-endian code is simpler:
- * for (i = 0; i < input_bits; i++) {
- *      remainder ^= next_input_bit();
- *      multiple = (remainder & 1) ? CRCPOLY : 0;
- *      remainder = (remainder >> 1) ^ multiple;
- * }
- *
- * Note that the other details of endianness have been hidden in CRCPOLY
- * (which must be bit-reversed) and next_input_bit().
- *
- * However, as long as next_input_bit is returning the bits in a sensible
- * order, we can actually do the merging 8 or more bits at a time rather
- * than one bit at a time:
- * for (i = 0; i < input_bytes; i++) {
- *      remainder ^= next_input_byte() << 24;
- *      for (j = 0; j < 8; j++) {
- *              multiple = (remainder & 0x80000000) ? CRCPOLY : 0;
- *              remainder = (remainder << 1) ^ multiple;
- *      }
- * }
- * Or in little-endian:
- * for (i = 0; i < input_bytes; i++) {
- *      remainder ^= next_input_byte();
- *      for (j = 0; j < 8; j++) {
- *              multiple = (remainder & 1) ? CRCPOLY : 0;
- *              remainder = (remainder << 1) ^ multiple;
- *      }
- * }
- * If the input is a multiple of 32 bits, you can even XOR in a 32-bit
- * word at a time and increase the inner loop count to 32.
- *
- * You can also mix and match the two loop styles, for example doing the
- * bulk of a message byte-at-a-time and adding bit-at-a-time processing
- * for any fractional bytes at the end.
- *
- * The only remaining optimization is to the byte-at-a-time table method.
- * Here, rather than just shifting one bit of the remainder to decide
- * in the correct multiple to subtract, we can shift a byte at a time.
- * This produces a 40-bit (rather than a 33-bit) intermediate remainder,
- * but again the multiple of the polynomial to subtract depends only on
- * the high bits, the high 8 bits in this case.  
- *
- * The multiple we need in that case is the low 32 bits of a 40-bit
- * value whose high 8 bits are given, and which is a multiple of the
- * generator polynomial.  This is simply the CRC-32 of the given
- * one-byte message.
- *
- * Two more details: normally, appending zero bits to a message which
- * is already a multiple of a polynomial produces a larger multiple of that
- * polynomial.  To enable a CRC to detect this condition, it's common to
- * invert the CRC before appending it.  This makes the remainder of the
- * message+crc come out not as zero, but some fixed non-zero value.
- *
- * The same problem applies to zero bits prepended to the message, and
- * a similar solution is used.  Instead of starting with a remainder of
- * 0, an initial remainder of all ones is used.  As long as you start
- * the same way on decoding, it doesn't make a difference.
- */
-
-#ifdef UNITTEST
+#ifdef CONFIG_CRC32_SELFTEST
 
-#include <stdlib.h>
-#include <stdio.h>
+/* 4096 random bytes */
+static u8 __attribute__((__aligned__(8))) test_buf[] =
+{
+        0x5b, 0x85, 0x21, 0xcb, 0x09, 0x68, 0x7d, 0x30,
+        0xc7, 0x69, 0xd7, 0x30, 0x92, 0xde, 0x59, 0xe4,
+        0xc9, 0x6e, 0x8b, 0xdb, 0x98, 0x6b, 0xaa, 0x60,
+        0xa8, 0xb5, 0xbc, 0x6c, 0xa9, 0xb1, 0x5b, 0x2c,
+        0xea, 0xb4, 0x92, 0x6a, 0x3f, 0x79, 0x91, 0xe4,
+        0xe9, 0x70, 0x51, 0x8c, 0x7f, 0x95, 0x6f, 0x1a,
+        0x56, 0xa1, 0x5c, 0x27, 0x03, 0x67, 0x9f, 0x3a,
+        0xe2, 0x31, 0x11, 0x29, 0x6b, 0x98, 0xfc, 0xc4,
+        0x53, 0x24, 0xc5, 0x8b, 0xce, 0x47, 0xb2, 0xb9,
+        0x32, 0xcb, 0xc1, 0xd0, 0x03, 0x57, 0x4e, 0xd4,
+        0xe9, 0x3c, 0xa1, 0x63, 0xcf, 0x12, 0x0e, 0xca,
+        0xe1, 0x13, 0xd1, 0x93, 0xa6, 0x88, 0x5c, 0x61,
+        0x5b, 0xbb, 0xf0, 0x19, 0x46, 0xb4, 0xcf, 0x9e,
+        0xb6, 0x6b, 0x4c, 0x3a, 0xcf, 0x60, 0xf9, 0x7a,
+        0x8d, 0x07, 0x63, 0xdb, 0x40, 0xe9, 0x0b, 0x6f,
+        0xad, 0x97, 0xf1, 0xed, 0xd0, 0x1e, 0x26, 0xfd,
+        0xbf, 0xb7, 0xc8, 0x04, 0x94, 0xf8, 0x8b, 0x8c,
+        0xf1, 0xab, 0x7a, 0xd4, 0xdd, 0xf3, 0xe8, 0x88,
+        0xc3, 0xed, 0x17, 0x8a, 0x9b, 0x40, 0x0d, 0x53,
+        0x62, 0x12, 0x03, 0x5f, 0x1b, 0x35, 0x32, 0x1f,
+        0xb4, 0x7b, 0x93, 0x78, 0x0d, 0xdb, 0xce, 0xa4,
+        0xc0, 0x47, 0xd5, 0xbf, 0x68, 0xe8, 0x5d, 0x74,
+        0x8f, 0x8e, 0x75, 0x1c, 0xb2, 0x4f, 0x9a, 0x60,
+        0xd1, 0xbe, 0x10, 0xf4, 0x5c, 0xa1, 0x53, 0x09,
+        0xa5, 0xe0, 0x09, 0x54, 0x85, 0x5c, 0xdc, 0x07,
+        0xe7, 0x21, 0x69, 0x7b, 0x8a, 0xfd, 0x90, 0xf1,
+        0x22, 0xd0, 0xb4, 0x36, 0x28, 0xe6, 0xb8, 0x0f,
+        0x39, 0xde, 0xc8, 0xf3, 0x86, 0x60, 0x34, 0xd2,
+        0x5e, 0xdf, 0xfd, 0xcf, 0x0f, 0xa9, 0x65, 0xf0,
+        0xd5, 0x4d, 0x96, 0x40, 0xe3, 0xdf, 0x3f, 0x95,
+        0x5a, 0x39, 0x19, 0x93, 0xf4, 0x75, 0xce, 0x22,
+        0x00, 0x1c, 0x93, 0xe2, 0x03, 0x66, 0xf4, 0x93,
+        0x73, 0x86, 0x81, 0x8e, 0x29, 0x44, 0x48, 0x86,
+        0x61, 0x7c, 0x48, 0xa3, 0x43, 0xd2, 0x9c, 0x8d,
+        0xd4, 0x95, 0xdd, 0xe1, 0x22, 0x89, 0x3a, 0x40,
+        0x4c, 0x1b, 0x8a, 0x04, 0xa8, 0x09, 0x69, 0x8b,
+        0xea, 0xc6, 0x55, 0x8e, 0x57, 0xe6, 0x64, 0x35,
+        0xf0, 0xc7, 0x16, 0x9f, 0x5d, 0x5e, 0x86, 0x40,
+        0x46, 0xbb, 0xe5, 0x45, 0x88, 0xfe, 0xc9, 0x63,
+        0x15, 0xfb, 0xf5, 0xbd, 0x71, 0x61, 0xeb, 0x7b,
+        0x78, 0x70, 0x07, 0x31, 0x03, 0x9f, 0xb2, 0xc8,
+        0xa7, 0xab, 0x47, 0xfd, 0xdf, 0xa0, 0x78, 0x72,
+        0xa4, 0x2a, 0xe4, 0xb6, 0xba, 0xc0, 0x1e, 0x86,
+        0x71, 0xe6, 0x3d, 0x18, 0x37, 0x70, 0xe6, 0xff,
+        0xe0, 0xbc, 0x0b, 0x22, 0xa0, 0x1f, 0xd3, 0xed,
+        0xa2, 0x55, 0x39, 0xab, 0xa8, 0x13, 0x73, 0x7c,
+        0x3f, 0xb2, 0xd6, 0x19, 0xac, 0xff, 0x99, 0xed,
+        0xe8, 0xe6, 0xa6, 0x22, 0xe3, 0x9c, 0xf1, 0x30,
+        0xdc, 0x01, 0x0a, 0x56, 0xfa, 0xe4, 0xc9, 0x99,
+        0xdd, 0xa8, 0xd8, 0xda, 0x35, 0x51, 0x73, 0xb4,
+        0x40, 0x86, 0x85, 0xdb, 0x5c, 0xd5, 0x85, 0x80,
+        0x14, 0x9c, 0xfd, 0x98, 0xa9, 0x82, 0xc5, 0x37,
+        0xff, 0x32, 0x5d, 0xd0, 0x0b, 0xfa, 0xdc, 0x04,
+        0x5e, 0x09, 0xd2, 0xca, 0x17, 0x4b, 0x1a, 0x8e,
+        0x15, 0xe1, 0xcc, 0x4e, 0x52, 0x88, 0x35, 0xbd,
+        0x48, 0xfe, 0x15, 0xa0, 0x91, 0xfd, 0x7e, 0x6c,
+        0x0e, 0x5d, 0x79, 0x1b, 0x81, 0x79, 0xd2, 0x09,
+        0x34, 0x70, 0x3d, 0x81, 0xec, 0xf6, 0x24, 0xbb,
+        0xfb, 0xf1, 0x7b, 0xdf, 0x54, 0xea, 0x80, 0x9b,
+        0xc7, 0x99, 0x9e, 0xbd, 0x16, 0x78, 0x12, 0x53,
+        0x5e, 0x01, 0xa7, 0x4e, 0xbd, 0x67, 0xe1, 0x9b,
+        0x4c, 0x0e, 0x61, 0x45, 0x97, 0xd2, 0xf0, 0x0f,
+        0xfe, 0x15, 0x08, 0xb7, 0x11, 0x4c, 0xe7, 0xff,
+        0x81, 0x53, 0xff, 0x91, 0x25, 0x38, 0x7e, 0x40,
+        0x94, 0xe5, 0xe0, 0xad, 0xe6, 0xd9, 0x79, 0xb6,
+        0x92, 0xc9, 0xfc, 0xde, 0xc3, 0x1a, 0x23, 0xbb,
+        0xdd, 0xc8, 0x51, 0x0c, 0x3a, 0x72, 0xfa, 0x73,
+        0x6f, 0xb7, 0xee, 0x61, 0x39, 0x03, 0x01, 0x3f,
+        0x7f, 0x94, 0x2e, 0x2e, 0xba, 0x3a, 0xbb, 0xb4,
+        0xfa, 0x6a, 0x17, 0xfe, 0xea, 0xef, 0x5e, 0x66,
+        0x97, 0x3f, 0x32, 0x3d, 0xd7, 0x3e, 0xb1, 0xf1,
+        0x6c, 0x14, 0x4c, 0xfd, 0x37, 0xd3, 0x38, 0x80,
+        0xfb, 0xde, 0xa6, 0x24, 0x1e, 0xc8, 0xca, 0x7f,
+        0x3a, 0x93, 0xd8, 0x8b, 0x18, 0x13, 0xb2, 0xe5,
+        0xe4, 0x93, 0x05, 0x53, 0x4f, 0x84, 0x66, 0xa7,
+        0x58, 0x5c, 0x7b, 0x86, 0x52, 0x6d, 0x0d, 0xce,
+        0xa4, 0x30, 0x7d, 0xb6, 0x18, 0x9f, 0xeb, 0xff,
+        0x22, 0xbb, 0x72, 0x29, 0xb9, 0x44, 0x0b, 0x48,
+        0x1e, 0x84, 0x71, 0x81, 0xe3, 0x6d, 0x73, 0x26,
+        0x92, 0xb4, 0x4d, 0x2a, 0x29, 0xb8, 0x1f, 0x72,
+        0xed, 0xd0, 0xe1, 0x64, 0x77, 0xea, 0x8e, 0x88,
+        0x0f, 0xef, 0x3f, 0xb1, 0x3b, 0xad, 0xf9, 0xc9,
+        0x8b, 0xd0, 0xac, 0xc6, 0xcc, 0xa9, 0x40, 0xcc,
+        0x76, 0xf6, 0x3b, 0x53, 0xb5, 0x88, 0xcb, 0xc8,
+        0x37, 0xf1, 0xa2, 0xba, 0x23, 0x15, 0x99, 0x09,
+        0xcc, 0xe7, 0x7a, 0x3b, 0x37, 0xf7, 0x58, 0xc8,
+        0x46, 0x8c, 0x2b, 0x2f, 0x4e, 0x0e, 0xa6, 0x5c,
+        0xea, 0x85, 0x55, 0xba, 0x02, 0x0e, 0x0e, 0x48,
+        0xbc, 0xe1, 0xb1, 0x01, 0x35, 0x79, 0x13, 0x3d,
+        0x1b, 0xc0, 0x53, 0x68, 0x11, 0xe7, 0x95, 0x0f,
+        0x9d, 0x3f, 0x4c, 0x47, 0x7b, 0x4d, 0x1c, 0xae,
+        0x50, 0x9b, 0xcb, 0xdd, 0x05, 0x8d, 0x9a, 0x97,
+        0xfd, 0x8c, 0xef, 0x0c, 0x1d, 0x67, 0x73, 0xa8,
+        0x28, 0x36, 0xd5, 0xb6, 0x92, 0x33, 0x40, 0x75,
+        0x0b, 0x51, 0xc3, 0x64, 0xba, 0x1d, 0xc2, 0xcc,
+        0xee, 0x7d, 0x54, 0x0f, 0x27, 0x69, 0xa7, 0x27,
+        0x63, 0x30, 0x29, 0xd9, 0xc8, 0x84, 0xd8, 0xdf,
+        0x9f, 0x68, 0x8d, 0x04, 0xca, 0xa6, 0xc5, 0xc7,
+        0x7a, 0x5c, 0xc8, 0xd1, 0xcb, 0x4a, 0xec, 0xd0,
+        0xd8, 0x20, 0x69, 0xc5, 0x17, 0xcd, 0x78, 0xc8,
+        0x75, 0x23, 0x30, 0x69, 0xc9, 0xd4, 0xea, 0x5c,
+        0x4f, 0x6b, 0x86, 0x3f, 0x8b, 0xfe, 0xee, 0x44,
+        0xc9, 0x7c, 0xb7, 0xdd, 0x3e, 0xe5, 0xec, 0x54,
+        0x03, 0x3e, 0xaa, 0x82, 0xc6, 0xdf, 0xb2, 0x38,
+        0x0e, 0x5d, 0xb3, 0x88, 0xd9, 0xd3, 0x69, 0x5f,
+        0x8f, 0x70, 0x8a, 0x7e, 0x11, 0xd9, 0x1e, 0x7b,
+        0x38, 0xf1, 0x42, 0x1a, 0xc0, 0x35, 0xf5, 0xc7,
+        0x36, 0x85, 0xf5, 0xf7, 0xb8, 0x7e, 0xc7, 0xef,
+        0x18, 0xf1, 0x63, 0xd6, 0x7a, 0xc6, 0xc9, 0x0e,
+        0x4d, 0x69, 0x4f, 0x84, 0xef, 0x26, 0x41, 0x0c,
+        0xec, 0xc7, 0xe0, 0x7e, 0x3c, 0x67, 0x01, 0x4c,
+        0x62, 0x1a, 0x20, 0x6f, 0xee, 0x47, 0x4d, 0xc0,
+        0x99, 0x13, 0x8d, 0x91, 0x4a, 0x26, 0xd4, 0x37,
+        0x28, 0x90, 0x58, 0x75, 0x66, 0x2b, 0x0a, 0xdf,
+        0xda, 0xee, 0x92, 0x25, 0x90, 0x62, 0x39, 0x9e,
+        0x44, 0x98, 0xad, 0xc1, 0x88, 0xed, 0xe4, 0xb4,
+        0xaf, 0xf5, 0x8c, 0x9b, 0x48, 0x4d, 0x56, 0x60,
+        0x97, 0x0f, 0x61, 0x59, 0x9e, 0xa6, 0x27, 0xfe,
+        0xc1, 0x91, 0x15, 0x38, 0xb8, 0x0f, 0xae, 0x61,
+        0x7d, 0x26, 0x13, 0x5a, 0x73, 0xff, 0x1c, 0xa3,
+        0x61, 0x04, 0x58, 0x48, 0x55, 0x44, 0x11, 0xfe,
+        0x15, 0xca, 0xc3, 0xbd, 0xca, 0xc5, 0xb4, 0x40,
+        0x5d, 0x1b, 0x7f, 0x39, 0xb5, 0x9c, 0x35, 0xec,
+        0x61, 0x15, 0x32, 0x32, 0xb8, 0x4e, 0x40, 0x9f,
+        0x17, 0x1f, 0x0a, 0x4d, 0xa9, 0x91, 0xef, 0xb7,
+        0xb0, 0xeb, 0xc2, 0x83, 0x9a, 0x6c, 0xd2, 0x79,
+        0x43, 0x78, 0x5e, 0x2f, 0xe5, 0xdd, 0x1a, 0x3c,
+        0x45, 0xab, 0x29, 0x40, 0x3a, 0x37, 0x5b, 0x6f,
+        0xd7, 0xfc, 0x48, 0x64, 0x3c, 0x49, 0xfb, 0x21,
+        0xbe, 0xc3, 0xff, 0x07, 0xfb, 0x17, 0xe9, 0xc9,
+        0x0c, 0x4c, 0x5c, 0x15, 0x9e, 0x8e, 0x22, 0x30,
+        0x0a, 0xde, 0x48, 0x7f, 0xdb, 0x0d, 0xd1, 0x2b,
+        0x87, 0x38, 0x9e, 0xcc, 0x5a, 0x01, 0x16, 0xee,
+        0x75, 0x49, 0x0d, 0x30, 0x01, 0x34, 0x6a, 0xb6,
+        0x9a, 0x5a, 0x2a, 0xec, 0xbb, 0x48, 0xac, 0xd3,
+        0x77, 0x83, 0xd8, 0x08, 0x86, 0x4f, 0x48, 0x09,
+        0x29, 0x41, 0x79, 0xa1, 0x03, 0x12, 0xc4, 0xcd,
+        0x90, 0x55, 0x47, 0x66, 0x74, 0x9a, 0xcc, 0x4f,
+        0x35, 0x8c, 0xd6, 0x98, 0xef, 0xeb, 0x45, 0xb9,
+        0x9a, 0x26, 0x2f, 0x39, 0xa5, 0x70, 0x6d, 0xfc,
+        0xb4, 0x51, 0xee, 0xf4, 0x9c, 0xe7, 0x38, 0x59,
+        0xad, 0xf4, 0xbc, 0x46, 0xff, 0x46, 0x8e, 0x60,
+        0x9c, 0xa3, 0x60, 0x1d, 0xf8, 0x26, 0x72, 0xf5,
+        0x72, 0x9d, 0x68, 0x80, 0x04, 0xf6, 0x0b, 0xa1,
+        0x0a, 0xd5, 0xa7, 0x82, 0x3a, 0x3e, 0x47, 0xa8,
+        0x5a, 0xde, 0x59, 0x4f, 0x7b, 0x07, 0xb3, 0xe9,
+        0x24, 0x19, 0x3d, 0x34, 0x05, 0xec, 0xf1, 0xab,
+        0x6e, 0x64, 0x8f, 0xd3, 0xe6, 0x41, 0x86, 0x80,
+        0x70, 0xe3, 0x8d, 0x60, 0x9c, 0x34, 0x25, 0x01,
+        0x07, 0x4d, 0x19, 0x41, 0x4e, 0x3d, 0x5c, 0x7e,
+        0xa8, 0xf5, 0xcc, 0xd5, 0x7b, 0xe2, 0x7d, 0x3d,
+        0x49, 0x86, 0x7d, 0x07, 0xb7, 0x10, 0xe3, 0x35,
+        0xb8, 0x84, 0x6d, 0x76, 0xab, 0x17, 0xc6, 0x38,
+        0xb4, 0xd3, 0x28, 0x57, 0xad, 0xd3, 0x88, 0x5a,
+        0xda, 0xea, 0xc8, 0x94, 0xcc, 0x37, 0x19, 0xac,
+        0x9c, 0x9f, 0x4b, 0x00, 0x15, 0xc0, 0xc8, 0xca,
+        0x1f, 0x15, 0xaa, 0xe0, 0xdb, 0xf9, 0x2f, 0x57,
+        0x1b, 0x24, 0xc7, 0x6f, 0x76, 0x29, 0xfb, 0xed,
+        0x25, 0x0d, 0xc0, 0xfe, 0xbd, 0x5a, 0xbf, 0x20,
+        0x08, 0x51, 0x05, 0xec, 0x71, 0xa3, 0xbf, 0xef,
+        0x5e, 0x99, 0x75, 0xdb, 0x3c, 0x5f, 0x9a, 0x8c,
+        0xbb, 0x19, 0x5c, 0x0e, 0x93, 0x19, 0xf8, 0x6a,
+        0xbc, 0xf2, 0x12, 0x54, 0x2f, 0xcb, 0x28, 0x64,
+        0x88, 0xb3, 0x92, 0x0d, 0x96, 0xd1, 0xa6, 0xe4,
+        0x1f, 0xf1, 0x4d, 0xa4, 0xab, 0x1c, 0xee, 0x54,
+        0xf2, 0xad, 0x29, 0x6d, 0x32, 0x37, 0xb2, 0x16,
+        0x77, 0x5c, 0xdc, 0x2e, 0x54, 0xec, 0x75, 0x26,
+        0xc6, 0x36, 0xd9, 0x17, 0x2c, 0xf1, 0x7a, 0xdc,
+        0x4b, 0xf1, 0xe2, 0xd9, 0x95, 0xba, 0xac, 0x87,
+        0xc1, 0xf3, 0x8e, 0x58, 0x08, 0xd8, 0x87, 0x60,
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+        0xfb, 0xba, 0xa7, 0xd7, 0xa3, 0x72, 0x69, 0x48,
+        0x48, 0x8c, 0xeb, 0x28, 0x89, 0xfe, 0x33, 0x65,
+        0x5a, 0x36, 0x01, 0x7e, 0x06, 0x79, 0x0a, 0x09,
+        0x3b, 0x74, 0x11, 0x9a, 0x6e, 0xbf, 0xd4, 0x9e,
+        0x58, 0x90, 0x49, 0x4f, 0x4d, 0x08, 0xd4, 0xe5,
+        0x4a, 0x09, 0x21, 0xef, 0x8b, 0xb8, 0x74, 0x3b,
+        0x91, 0xdd, 0x36, 0x85, 0x60, 0x2d, 0xfa, 0xd4,
+        0x45, 0x7b, 0x45, 0x53, 0xf5, 0x47, 0x87, 0x7e,
+        0xa6, 0x37, 0xc8, 0x78, 0x7a, 0x68, 0x9d, 0x8d,
+        0x65, 0x2c, 0x0e, 0x91, 0x5c, 0xa2, 0x60, 0xf0,
+        0x8e, 0x3f, 0xe9, 0x1a, 0xcd, 0xaa, 0xe7, 0xd5,
+        0x77, 0x18, 0xaf, 0xc9, 0xbc, 0x18, 0xea, 0x48,
+        0x1b, 0xfb, 0x22, 0x48, 0x70, 0x16, 0x29, 0x9e,
+        0x5b, 0xc1, 0x2c, 0x66, 0x23, 0xbc, 0xf0, 0x1f,
+        0xef, 0xaf, 0xe4, 0xd6, 0x04, 0x19, 0x82, 0x7a,
+        0x0b, 0xba, 0x4b, 0x46, 0xb1, 0x6a, 0x85, 0x5d,
+        0xb4, 0x73, 0xd6, 0x21, 0xa1, 0x71, 0x60, 0x14,
+        0xee, 0x0a, 0x77, 0xc4, 0x66, 0x2e, 0xf9, 0x69,
+        0x30, 0xaf, 0x41, 0x0b, 0xc8, 0x83, 0x3c, 0x53,
+        0x99, 0x19, 0x27, 0x46, 0xf7, 0x41, 0x6e, 0x56,
+        0xdc, 0x94, 0x28, 0x67, 0x4e, 0xb7, 0x25, 0x48,
+        0x8a, 0xc2, 0xe0, 0x60, 0x96, 0xcc, 0x18, 0xf4,
+        0x84, 0xdd, 0xa7, 0x5e, 0x3e, 0x05, 0x0b, 0x26,
+        0x26, 0xb2, 0x5c, 0x1f, 0x57, 0x1a, 0x04, 0x7e,
+        0x6a, 0xe3, 0x2f, 0xb4, 0x35, 0xb6, 0x38, 0x40,
+        0x40, 0xcd, 0x6f, 0x87, 0x2e, 0xef, 0xa3, 0xd7,
+        0xa9, 0xc2, 0xe8, 0x0d, 0x27, 0xdf, 0x44, 0x62,
+        0x99, 0xa0, 0xfc, 0xcf, 0x81, 0x78, 0xcb, 0xfe,
+        0xe5, 0xa0, 0x03, 0x4e, 0x6c, 0xd7, 0xf4, 0xaf,
+        0x7a, 0xbb, 0x61, 0x82, 0xfe, 0x71, 0x89, 0xb2,
+        0x22, 0x7c, 0x8e, 0x83, 0x04, 0xce, 0xf6, 0x5d,
+        0x84, 0x8f, 0x95, 0x6a, 0x7f, 0xad, 0xfd, 0x32,
+        0x9c, 0x5e, 0xe4, 0x9c, 0x89, 0x60, 0x54, 0xaa,
+        0x96, 0x72, 0xd2, 0xd7, 0x36, 0x85, 0xa9, 0x45,
+        0xd2, 0x2a, 0xa1, 0x81, 0x49, 0x6f, 0x7e, 0x04,
+        0xfa, 0xe2, 0xfe, 0x90, 0x26, 0x77, 0x5a, 0x33,
+        0xb8, 0x04, 0x9a, 0x7a, 0xe6, 0x4c, 0x4f, 0xad,
+        0x72, 0x96, 0x08, 0x28, 0x58, 0x13, 0xf8, 0xc4,
+        0x1c, 0xf0, 0xc3, 0x45, 0x95, 0x49, 0x20, 0x8c,
+        0x9f, 0x39, 0x70, 0xe1, 0x77, 0xfe, 0xd5, 0x4b,
+        0xaf, 0x86, 0xda, 0xef, 0x22, 0x06, 0x83, 0x36,
+        0x29, 0x12, 0x11, 0x40, 0xbc, 0x3b, 0x86, 0xaa,
+        0xaa, 0x65, 0x60, 0xc3, 0x80, 0xca, 0xed, 0xa9,
+        0xf3, 0xb0, 0x79, 0x96, 0xa2, 0x55, 0x27, 0x28,
+        0x55, 0x73, 0x26, 0xa5, 0x50, 0xea, 0x92, 0x4b,
+        0x3c, 0x5c, 0x82, 0x33, 0xf0, 0x01, 0x3f, 0x03,
+        0xc1, 0x08, 0x05, 0xbf, 0x98, 0xf4, 0x9b, 0x6d,
+        0xa5, 0xa8, 0xb4, 0x82, 0x0c, 0x06, 0xfa, 0xff,
+        0x2d, 0x08, 0xf3, 0x05, 0x4f, 0x57, 0x2a, 0x39,
+        0xd4, 0x83, 0x0d, 0x75, 0x51, 0xd8, 0x5b, 0x1b,
+        0xd3, 0x51, 0x5a, 0x32, 0x2a, 0x9b, 0x32, 0xb2,
+        0xf2, 0xa4, 0x96, 0x12, 0xf2, 0xae, 0x40, 0x34,
+        0x67, 0xa8, 0xf5, 0x44, 0xd5, 0x35, 0x53, 0xfe,
+        0xa3, 0x60, 0x96, 0x63, 0x0f, 0x1f, 0x6e, 0xb0,
+        0x5a, 0x42, 0xa6, 0xfc, 0x51, 0x0b, 0x60, 0x27,
+        0xbc, 0x06, 0x71, 0xed, 0x65, 0x5b, 0x23, 0x86,
+        0x4a, 0x07, 0x3b, 0x22, 0x07, 0x46, 0xe6, 0x90,
+        0x3e, 0xf3, 0x25, 0x50, 0x1b, 0x4c, 0x7f, 0x03,
+        0x08, 0xa8, 0x36, 0x6b, 0x87, 0xe5, 0xe3, 0xdb,
+        0x9a, 0x38, 0x83, 0xff, 0x9f, 0x1a, 0x9f, 0x57,
+        0xa4, 0x2a, 0xf6, 0x37, 0xbc, 0x1a, 0xff, 0xc9,
+        0x1e, 0x35, 0x0c, 0xc3, 0x7c, 0xa3, 0xb2, 0xe5,
+        0xd2, 0xc6, 0xb4, 0x57, 0x47, 0xe4, 0x32, 0x16,
+        0x6d, 0xa9, 0xae, 0x64, 0xe6, 0x2d, 0x8d, 0xc5,
+        0x8d, 0x50, 0x8e, 0xe8, 0x1a, 0x22, 0x34, 0x2a,
+        0xd9, 0xeb, 0x51, 0x90, 0x4a, 0xb1, 0x41, 0x7d,
+        0x64, 0xf9, 0xb9, 0x0d, 0xf6, 0x23, 0x33, 0xb0,
+        0x33, 0xf4, 0xf7, 0x3f, 0x27, 0x84, 0xc6, 0x0f,
+        0x54, 0xa5, 0xc0, 0x2e, 0xec, 0x0b, 0x3a, 0x48,
+        0x6e, 0x80, 0x35, 0x81, 0x43, 0x9b, 0x90, 0xb1,
+        0xd0, 0x2b, 0xea, 0x21, 0xdc, 0xda, 0x5b, 0x09,
+        0xf4, 0xcc, 0x10, 0xb4, 0xc7, 0xfe, 0x79, 0x51,
+        0xc3, 0xc5, 0xac, 0x88, 0x74, 0x84, 0x0b, 0x4b,
+        0xca, 0x79, 0x16, 0x29, 0xfb, 0x69, 0x54, 0xdf,
+        0x41, 0x7e, 0xe9, 0xc7, 0x8e, 0xea, 0xa5, 0xfe,
+        0xfc, 0x76, 0x0e, 0x90, 0xc4, 0x92, 0x38, 0xad,
+        0x7b, 0x48, 0xe6, 0x6e, 0xf7, 0x21, 0xfd, 0x4e,
+        0x93, 0x0a, 0x7b, 0x41, 0x83, 0x68, 0xfb, 0x57,
+        0x51, 0x76, 0x34, 0xa9, 0x6c, 0x00, 0xaa, 0x4f,
+        0x66, 0x65, 0x98, 0x4a, 0x4f, 0xa3, 0xa0, 0xef,
+        0x69, 0x3f, 0xe3, 0x1c, 0x92, 0x8c, 0xfd, 0xd8,
+        0xe8, 0xde, 0x7c, 0x7f, 0x3e, 0x84, 0x8e, 0x69,
+        0x3c, 0xf1, 0xf2, 0x05, 0x46, 0xdc, 0x2f, 0x9d,
+        0x5e, 0x6e, 0x4c, 0xfb, 0xb5, 0x99, 0x2a, 0x59,
+        0x63, 0xc1, 0x34, 0xbc, 0x57, 0xc0, 0x0d, 0xb9,
+        0x61, 0x25, 0xf3, 0x33, 0x23, 0x51, 0xb6, 0x0d,
+        0x07, 0xa6, 0xab, 0x94, 0x4a, 0xb7, 0x2a, 0xea,
+        0xee, 0xac, 0xa3, 0xc3, 0x04, 0x8b, 0x0e, 0x56,
+        0xfe, 0x44, 0xa7, 0x39, 0xe2, 0xed, 0xed, 0xb4,
+        0x22, 0x2b, 0xac, 0x12, 0x32, 0x28, 0x91, 0xd8,
+        0xa5, 0xab, 0xff, 0x5f, 0xe0, 0x4b, 0xda, 0x78,
+        0x17, 0xda, 0xf1, 0x01, 0x5b, 0xcd, 0xe2, 0x5f,
+        0x50, 0x45, 0x73, 0x2b, 0xe4, 0x76, 0x77, 0xf4,
+        0x64, 0x1d, 0x43, 0xfb, 0x84, 0x7a, 0xea, 0x91,
+        0xae, 0xf9, 0x9e, 0xb7, 0xb4, 0xb0, 0x91, 0x5f,
+        0x16, 0x35, 0x9a, 0x11, 0xb8, 0xc7, 0xc1, 0x8c,
+        0xc6, 0x10, 0x8d, 0x2f, 0x63, 0x4a, 0xa7, 0x57,
+        0x3a, 0x51, 0xd6, 0x32, 0x2d, 0x64, 0x72, 0xd4,
+        0x66, 0xdc, 0x10, 0xa6, 0x67, 0xd6, 0x04, 0x23,
+        0x9d, 0x0a, 0x11, 0x77, 0xdd, 0x37, 0x94, 0x17,
+        0x3c, 0xbf, 0x8b, 0x65, 0xb0, 0x2e, 0x5e, 0x66,
+        0x47, 0x64, 0xac, 0xdd, 0xf0, 0x84, 0xfd, 0x39,
+        0xfa, 0x15, 0x5d, 0xef, 0xae, 0xca, 0xc1, 0x36,
+        0xa7, 0x5c, 0xbf, 0xc7, 0x08, 0xc2, 0x66, 0x00,
+        0x74, 0x74, 0x4e, 0x27, 0x3f, 0x55, 0x8a, 0xb7,
+        0x38, 0x66, 0x83, 0x6d, 0xcf, 0x99, 0x9e, 0x60,
+        0x8f, 0xdd, 0x2e, 0x62, 0x22, 0x0e, 0xef, 0x0c,
+        0x98, 0xa7, 0x85, 0x74, 0x3b, 0x9d, 0xec, 0x9e,
+        0xa9, 0x19, 0x72, 0xa5, 0x7f, 0x2c, 0x39, 0xb7,
+        0x7d, 0xb7, 0xf1, 0x12, 0x65, 0x27, 0x4b, 0x5a,
+        0xde, 0x17, 0xfe, 0xad, 0x44, 0xf3, 0x20, 0x4d,
+        0xfd, 0xe4, 0x1f, 0xb5, 0x81, 0xb0, 0x36, 0x37,
+        0x08, 0x6f, 0xc3, 0x0c, 0xe9, 0x85, 0x98, 0x82,
+        0xa9, 0x62, 0x0c, 0xc4, 0x97, 0xc0, 0x50, 0xc8,
+        0xa7, 0x3c, 0x50, 0x9f, 0x43, 0xb9, 0xcd, 0x5e,
+        0x4d, 0xfa, 0x1c, 0x4b, 0x0b, 0xa9, 0x98, 0x85,
+        0x38, 0x92, 0xac, 0x8d, 0xe4, 0xad, 0x9b, 0x98,
+        0xab, 0xd9, 0x38, 0xac, 0x62, 0x52, 0xa3, 0x22,
+        0x63, 0x0f, 0xbf, 0x95, 0x48, 0xdf, 0x69, 0xe7,
+        0x8b, 0x33, 0xd5, 0xb2, 0xbd, 0x05, 0x49, 0x49,
+        0x9d, 0x57, 0x73, 0x19, 0x33, 0xae, 0xfa, 0x33,
+        0xf1, 0x19, 0xa8, 0x80, 0xce, 0x04, 0x9f, 0xbc,
+        0x1d, 0x65, 0x82, 0x1b, 0xe5, 0x3a, 0x51, 0xc8,
+        0x1c, 0x21, 0xe3, 0x5d, 0xf3, 0x7d, 0x9b, 0x2f,
+        0x2c, 0x1d, 0x4a, 0x7f, 0x9b, 0x68, 0x35, 0xa3,
+        0xb2, 0x50, 0xf7, 0x62, 0x79, 0xcd, 0xf4, 0x98,
+        0x4f, 0xe5, 0x63, 0x7c, 0x3e, 0x45, 0x31, 0x8c,
+        0x16, 0xa0, 0x12, 0xc8, 0x58, 0xce, 0x39, 0xa6,
+        0xbc, 0x54, 0xdb, 0xc5, 0xe0, 0xd5, 0xba, 0xbc,
+        0xb9, 0x04, 0xf4, 0x8d, 0xe8, 0x2f, 0x15, 0x9d,
+};
 
-#if 0                           /*Not used at present */
-static void
-buf_dump(char const *prefix, unsigned char const *buf, size_t len)
+/* 100 test cases */
+static struct crc_test {
+        u32 crc;        /* random starting crc */
+        u32 start;      /* random 6 bit offset in buf */
+        u32 length;     /* random 11 bit length of test */
+        u32 crc_le;     /* expected crc32_le result */
+        u32 crc_be;     /* expected crc32_be result */
+        u32 crc32c_le;  /* expected crc32c_le result */
+} test[] =
 {
-        fputs(prefix, stdout);
-        while (len--)
-                printf(" %02x", *buf++);
-        putchar('\n');
+        {0x674bf11d, 0x00000038, 0x00000542, 0x0af6d466, 0xd8b6e4c1,
+         0xf6e93d6c},
+        {0x35c672c6, 0x0000003a, 0x000001aa, 0xc6d3dfba, 0x28aaf3ad,
+         0x0fe92aca},
+        {0x496da28e, 0x00000039, 0x000005af, 0xd933660f, 0x5d57e81f,
+         0x52e1ebb8},
+        {0x09a9b90e, 0x00000027, 0x000001f8, 0xb45fe007, 0xf45fca9a,
+         0x0798af9a},
+        {0xdc97e5a9, 0x00000025, 0x000003b6, 0xf81a3562, 0xe0126ba2,
+         0x18eb3152},
+        {0x47c58900, 0x0000000a, 0x000000b9, 0x8e58eccf, 0xf3afc793,
+         0xd00d08c7},
+        {0x292561e8, 0x0000000c, 0x00000403, 0xa2ba8aaf, 0x0b797aed,
+         0x8ba966bc},
+        {0x415037f6, 0x00000003, 0x00000676, 0xa17d52e8, 0x7f0fdf35,
+         0x11d694a2},
+        {0x3466e707, 0x00000026, 0x00000042, 0x258319be, 0x75c484a2,
+         0x6ab3208d},
+        {0xafd1281b, 0x00000023, 0x000002ee, 0x4428eaf8, 0x06c7ad10,
+         0xba4603c5},
+        {0xd3857b18, 0x00000028, 0x000004a2, 0x5c430821, 0xb062b7cb,
+         0xe6071c6f},
+        {0x1d825a8f, 0x0000002b, 0x0000050b, 0xd2c45f0c, 0xd68634e0,
+         0x179ec30a},
+        {0x5033e3bc, 0x0000000b, 0x00000078, 0xa3ea4113, 0xac6d31fb,
+         0x0903beb8},
+        {0x94f1fb5e, 0x0000000f, 0x000003a2, 0xfbfc50b1, 0x3cfe50ed,
+         0x6a7cb4fa},
+        {0xc9a0fe14, 0x00000009, 0x00000473, 0x5fb61894, 0x87070591,
+         0xdb535801},
+        {0x88a034b1, 0x0000001c, 0x000005ad, 0xc1b16053, 0x46f95c67,
+         0x92bed597},
+        {0xf0f72239, 0x00000020, 0x0000026d, 0xa6fa58f3, 0xf8c2c1dd,
+         0x192a3f1b},
+        {0xcc20a5e3, 0x0000003b, 0x0000067a, 0x7740185a, 0x308b979a,
+         0xccbaec1a},
+        {0xce589c95, 0x0000002b, 0x00000641, 0xd055e987, 0x40aae25b,
+         0x7eabae4d},
+        {0x78edc885, 0x00000035, 0x000005be, 0xa39cb14b, 0x035b0d1f,
+         0x28c72982},
+        {0x9d40a377, 0x0000003b, 0x00000038, 0x1f47ccd2, 0x197fbc9d,
+         0xc3cd4d18},
+        {0x703d0e01, 0x0000003c, 0x000006f1, 0x88735e7c, 0xfed57c5a,
+         0xbca8f0e7},
+        {0x776bf505, 0x0000000f, 0x000005b2, 0x5cc4fc01, 0xf32efb97,
+         0x713f60b3},
+        {0x4a3e7854, 0x00000027, 0x000004b8, 0x8d923c82, 0x0cbfb4a2,
+         0xebd08fd5},
+        {0x209172dd, 0x0000003b, 0x00000356, 0xb89e9c2b, 0xd7868138,
+         0x64406c59},
+        {0x3ba4cc5b, 0x0000002f, 0x00000203, 0xe51601a9, 0x5b2a1032,
+         0x7421890e},
+        {0xfc62f297, 0x00000000, 0x00000079, 0x71a8e1a2, 0x5d88685f,
+         0xe9347603},
+        {0x64280b8b, 0x00000016, 0x000007ab, 0x0fa7a30c, 0xda3a455f,
+         0x1bef9060},
+        {0x97dd724b, 0x00000033, 0x000007ad, 0x5788b2f4, 0xd7326d32,
+         0x34720072},
+        {0x61394b52, 0x00000035, 0x00000571, 0xc66525f1, 0xcabe7fef,
+         0x48310f59},
+        {0x29b4faff, 0x00000024, 0x0000006e, 0xca13751e, 0x993648e0,
+         0x783a4213},
+        {0x29bfb1dc, 0x0000000b, 0x00000244, 0x436c43f7, 0x429f7a59,
+         0x9e8efd41},
+        {0x86ae934b, 0x00000035, 0x00000104, 0x0760ec93, 0x9cf7d0f4,
+         0xfc3d34a5},
+        {0xc4c1024e, 0x0000002e, 0x000006b1, 0x6516a3ec, 0x19321f9c,
+         0x17a52ae2},
+        {0x3287a80a, 0x00000026, 0x00000496, 0x0b257eb1, 0x754ebd51,
+         0x886d935a},
+        {0xa4db423e, 0x00000023, 0x0000045d, 0x9b3a66dc, 0x873e9f11,
+         0xeaaeaeb2},
+        {0x7a1078df, 0x00000015, 0x0000014a, 0x8c2484c5, 0x6a628659,
+         0x8e900a4b},
+        {0x6048bd5b, 0x00000006, 0x0000006a, 0x897e3559, 0xac9961af,
+         0xd74662b1},
+        {0xd8f9ea20, 0x0000003d, 0x00000277, 0x60eb905b, 0xed2aaf99,
+         0xd26752ba},
+        {0xea5ec3b4, 0x0000002a, 0x000004fe, 0x869965dc, 0x6c1f833b,
+         0x8b1fcd62},
+        {0x2dfb005d, 0x00000016, 0x00000345, 0x6a3b117e, 0xf05e8521,
+         0xf54342fe},
+        {0x5a214ade, 0x00000020, 0x000005b6, 0x467f70be, 0xcb22ccd3,
+         0x5b95b988},
+        {0xf0ab9cca, 0x00000032, 0x00000515, 0xed223df3, 0x7f3ef01d,
+         0x2e1176be},
+        {0x91b444f9, 0x0000002e, 0x000007f8, 0x84e9a983, 0x5676756f,
+         0x66120546},
+        {0x1b5d2ddb, 0x0000002e, 0x0000012c, 0xba638c4c, 0x3f42047b,
+         0xf256a5cc},
+        {0xd824d1bb, 0x0000003a, 0x000007b5, 0x6288653b, 0x3a3ebea0,
+         0x4af1dd69},
+        {0x0470180c, 0x00000034, 0x000001f0, 0x9d5b80d6, 0x3de08195,
+         0x56f0a04a},
+        {0xffaa3a3f, 0x00000036, 0x00000299, 0xf3a82ab8, 0x53e0c13d,
+         0x74f6b6b2},
+        {0x6406cfeb, 0x00000023, 0x00000600, 0xa920b8e8, 0xe4e2acf4,
+         0x085951fd},
+        {0xb24aaa38, 0x0000003e, 0x000004a1, 0x657cc328, 0x5077b2c3,
+         0xc65387eb},
+        {0x58b2ab7c, 0x00000039, 0x000002b4, 0x3a17ee7e, 0x9dcb3643,
+         0x1ca9257b},
+        {0x3db85970, 0x00000006, 0x000002b6, 0x95268b59, 0xb9812c10,
+         0xfd196d76},
+        {0x857830c5, 0x00000003, 0x00000590, 0x4ef439d5, 0xf042161d,
+         0x5ef88339},
+        {0xe1fcd978, 0x0000003e, 0x000007d8, 0xae8d8699, 0xce0a1ef5,
+         0x2c3714d9},
+        {0xb982a768, 0x00000016, 0x000006e0, 0x62fad3df, 0x5f8a067b,
+         0x58576548},
+        {0x1d581ce8, 0x0000001e, 0x0000058b, 0xf0f5da53, 0x26e39eee,
+         0xfd7c57de},
+        {0x2456719b, 0x00000025, 0x00000503, 0x4296ac64, 0xd50e4c14,
+         0xd5fedd59},
+        {0xfae6d8f2, 0x00000000, 0x0000055d, 0x057fdf2e, 0x2a31391a,
+         0x1cc3b17b},
+        {0xcba828e3, 0x00000039, 0x000002ce, 0xe3f22351, 0x8f00877b,
+         0x270eed73},
+        {0x13d25952, 0x0000000a, 0x0000072d, 0x76d4b4cc, 0x5eb67ec3,
+         0x91ecbb11},
+        {0x0342be3f, 0x00000015, 0x00000599, 0xec75d9f1, 0x9d4d2826,
+         0x05ed8d0c},
+        {0xeaa344e0, 0x00000014, 0x000004d8, 0x72a4c981, 0x2064ea06,
+         0x0b09ad5b},
+        {0xbbb52021, 0x0000003b, 0x00000272, 0x04af99fc, 0xaf042d35,
+         0xf8d511fb},
+        {0xb66384dc, 0x0000001d, 0x000007fc, 0xd7629116, 0x782bd801,
+         0x5ad832cc},
+        {0x616c01b6, 0x00000022, 0x000002c8, 0x5b1dab30, 0x783ce7d2,
+         0x1214d196},
+        {0xce2bdaad, 0x00000016, 0x0000062a, 0x932535c8, 0x3f02926d,
+         0x5747218a},
+        {0x00fe84d7, 0x00000005, 0x00000205, 0x850e50aa, 0x753d649c,
+         0xde8f14de},
+        {0xbebdcb4c, 0x00000006, 0x0000055d, 0xbeaa37a2, 0x2d8c9eba,
+         0x3563b7b9},
+        {0xd8b1a02a, 0x00000010, 0x00000387, 0x5017d2fc, 0x503541a5,
+         0x071475d0},
+        {0x3b96cad2, 0x00000036, 0x00000347, 0x1d2372ae, 0x926cd90b,
+         0x54c79d60},
+        {0xc94c1ed7, 0x00000005, 0x0000038b, 0x9e9fdb22, 0x144a9178,
+         0x4c53eee6},
+        {0x1aad454e, 0x00000025, 0x000002b2, 0xc3f6315c, 0x5c7a35b3,
+         0x10137a3c},
+        {0xa4fec9a6, 0x00000000, 0x000006d6, 0x90be5080, 0xa4107605,
+         0xaa9d6c73},
+        {0x1bbe71e2, 0x0000001f, 0x000002fd, 0x4e504c3b, 0x284ccaf1,
+         0xb63d23e7},
+        {0x4201c7e4, 0x00000002, 0x000002b7, 0x7822e3f9, 0x0cc912a9,
+         0x7f53e9cf},
+        {0x23fddc96, 0x00000003, 0x00000627, 0x8a385125, 0x07767e78,
+         0x13c1cd83},
+        {0xd82ba25c, 0x00000016, 0x0000063e, 0x98e4148a, 0x283330c9,
+         0x49ff5867},
+        {0x786f2032, 0x0000002d, 0x0000060f, 0xf201600a, 0xf561bfcd,
+         0x8467f211},
+        {0xfebe4e1f, 0x0000002a, 0x000004f2, 0x95e51961, 0xfd80dcab,
+         0x3f9683b2},
+        {0x1a6e0a39, 0x00000008, 0x00000672, 0x8af6c2a5, 0x78dd84cb,
+         0x76a3f874},
+        {0x56000ab8, 0x0000000e, 0x000000e5, 0x36bacb8f, 0x22ee1f77,
+         0x863b702f},
+        {0x4717fe0c, 0x00000000, 0x000006ec, 0x8439f342, 0x5c8e03da,
+         0xdc6c58ff},
+        {0xd5d5d68e, 0x0000003c, 0x000003a3, 0x46fff083, 0x177d1b39,
+         0x0622cc95},
+        {0xc25dd6c6, 0x00000024, 0x000006c0, 0x5ceb8eb4, 0x892b0d16,
+         0xe85605cd},
+        {0xe9b11300, 0x00000023, 0x00000683, 0x07a5d59a, 0x6c6a3208,
+         0x31da5f06},
+        {0x95cd285e, 0x00000001, 0x00000047, 0x7b3a4368, 0x0202c07e,
+         0xa1f2e784},
+        {0xd9245a25, 0x0000001e, 0x000003a6, 0xd33c1841, 0x1936c0d5,
+         0xb07cc616},
+        {0x103279db, 0x00000006, 0x0000039b, 0xca09b8a0, 0x77d62892,
+         0xbf943b6c},
+        {0x1cba3172, 0x00000027, 0x000001c8, 0xcb377194, 0xebe682db,
+         0x2c01af1c},
+        {0x8f613739, 0x0000000c, 0x000001df, 0xb4b0bc87, 0x7710bd43,
+         0x0fe5f56d},
+        {0x1c6aa90d, 0x0000001b, 0x0000053c, 0x70559245, 0xda7894ac,
+         0xf8943b2d},
+        {0xaabe5b93, 0x0000003d, 0x00000715, 0xcdbf42fa, 0x0c3b99e7,
+         0xe4d89272},
+        {0xf15dd038, 0x00000006, 0x000006db, 0x6e104aea, 0x8d5967f2,
+         0x7c2f6bbb},
+        {0x584dd49c, 0x00000020, 0x000007bc, 0x36b6cfd6, 0xad4e23b2,
+         0xabbf388b},
+        {0x5d8c9506, 0x00000020, 0x00000470, 0x4c62378e, 0x31d92640,
+         0x1dca1f4e},
+        {0xb80d17b0, 0x00000032, 0x00000346, 0x22a5bb88, 0x9a7ec89f,
+         0x5c170e23},
+        {0xdaf0592e, 0x00000023, 0x000007b0, 0x3cab3f99, 0x9b1fdd99,
+         0xc0e9d672},
+        {0x4793cc85, 0x0000000d, 0x00000706, 0xe82e04f6, 0xed3db6b7,
+         0xc18bdc86},
+        {0x82ebf64e, 0x00000009, 0x000007c3, 0x69d590a9, 0x9efa8499,
+         0xa874fcdd},
+        {0xb18a0319, 0x00000026, 0x000007db, 0x1cf98dcc, 0x8fa9ad6a,
+         0x9dc0bb48},
+};
 
-}
-#endif
+#include <linux/time.h>
 
-static void bytereverse(unsigned char *buf, size_t len)
+static int __init crc32c_test(void)
 {
-        while (len--) {
-                unsigned char x = bitrev8(*buf);
-                *buf++ = x;
+        int i;
+        int errors = 0;
+        int bytes = 0;
+        struct timespec start, stop;
+        u64 nsec;
+        unsigned long flags;
+
+        /* keep static to prevent cache warming code from
+         * getting eliminated by the compiler */
+        static u32 crc;
+
+        /* pre-warm the cache */
+        for (i = 0; i < 100; i++) {
+                bytes += 2*test[i].length;
+
+                crc ^= __crc32c_le(test[i].crc, test_buf +
+                    test[i].start, test[i].length);
         }
-}
 
-static void random_garbage(unsigned char *buf, size_t len)
-{
-        while (len--)
-                *buf++ = (unsigned char) random();
-}
+        /* reduce OS noise */
+        local_irq_save(flags);
+        local_irq_disable();
 
-#if 0                           /* Not used at present */
-static void store_le(u32 x, unsigned char *buf)
-{
-        buf[0] = (unsigned char) x;
-        buf[1] = (unsigned char) (x >> 8);
-        buf[2] = (unsigned char) (x >> 16);
-        buf[3] = (unsigned char) (x >> 24);
-}
-#endif
+        getnstimeofday(&start);
+        for (i = 0; i < 100; i++) {
+                if (test[i].crc32c_le != __crc32c_le(test[i].crc, test_buf +
+                    test[i].start, test[i].length))
+                        errors++;
+        }
+        getnstimeofday(&stop);
 
-static void store_be(u32 x, unsigned char *buf)
-{
-        buf[0] = (unsigned char) (x >> 24);
-        buf[1] = (unsigned char) (x >> 16);
-        buf[2] = (unsigned char) (x >> 8);
-        buf[3] = (unsigned char) x;
+        local_irq_restore(flags);
+        local_irq_enable();
+
+        nsec = stop.tv_nsec - start.tv_nsec +
+                1000000000 * (stop.tv_sec - start.tv_sec);
+
+        pr_info("crc32c: CRC_LE_BITS = %d\n", CRC_LE_BITS);
+
+        if (errors)
+                pr_warn("crc32c: %d self tests failed\n", errors);
+        else {
+                pr_info("crc32c: self tests passed, processed %d bytes in %lld nsec\n",
+                        bytes, nsec);
+        }
+
+        return 0;
 }
 
-/*
- * This checks that CRC(buf + CRC(buf)) = 0, and that
- * CRC commutes with bit-reversal.  This has the side effect
- * of bytewise bit-reversing the input buffer, and returns
- * the CRC of the reversed buffer.
- */
-static u32 test_step(u32 init, unsigned char *buf, size_t len)
+static int __init crc32_test(void)
 {
-        u32 crc1, crc2;
-        size_t i;
+        int i;
+        int errors = 0;
+        int bytes = 0;
+        struct timespec start, stop;
+        u64 nsec;
+        unsigned long flags;
+
+        /* keep static to prevent cache warming code from
+         * getting eliminated by the compiler */
+        static u32 crc;
+
+        /* pre-warm the cache */
+        for (i = 0; i < 100; i++) {
+                bytes += 2*test[i].length;
 
-        crc1 = crc32_be(init, buf, len);
-        store_be(crc1, buf + len);
-        crc2 = crc32_be(init, buf, len + 4);
-        if (crc2)
-                printf("\nCRC cancellation fail: 0x%08x should be 0\n",
-                       crc2);
-
-        for (i = 0; i <= len + 4; i++) {
-                crc2 = crc32_be(init, buf, i);
-                crc2 = crc32_be(crc2, buf + i, len + 4 - i);
-                if (crc2)
-                        printf("\nCRC split fail: 0x%08x\n", crc2);
+                crc ^= crc32_le(test[i].crc, test_buf +
+                    test[i].start, test[i].length);
+
+                crc ^= crc32_be(test[i].crc, test_buf +
+                    test[i].start, test[i].length);
         }
 
-        /* Now swap it around for the other test */
-
-        bytereverse(buf, len + 4);
-        init = bitrev32(init);
-        crc2 = bitrev32(crc1);
-        if (crc1 != bitrev32(crc2))
-                printf("\nBit reversal fail: 0x%08x -> 0x%08x -> 0x%08x\n",
-                       crc1, crc2, bitrev32(crc2));
-        crc1 = crc32_le(init, buf, len);
-        if (crc1 != crc2)
-                printf("\nCRC endianness fail: 0x%08x != 0x%08x\n", crc1,
-                       crc2);
-        crc2 = crc32_le(init, buf, len + 4);
-        if (crc2)
-                printf("\nCRC cancellation fail: 0x%08x should be 0\n",
-                       crc2);
-
-        for (i = 0; i <= len + 4; i++) {
-                crc2 = crc32_le(init, buf, i);
-                crc2 = crc32_le(crc2, buf + i, len + 4 - i);
-                if (crc2)
-                        printf("\nCRC split fail: 0x%08x\n", crc2);
+        /* reduce OS noise */
+        local_irq_save(flags);
+        local_irq_disable();
+
+        getnstimeofday(&start);
+        for (i = 0; i < 100; i++) {
+                if (test[i].crc_le != crc32_le(test[i].crc, test_buf +
+                    test[i].start, test[i].length))
+                        errors++;
+
+                if (test[i].crc_be != crc32_be(test[i].crc, test_buf +
+                    test[i].start, test[i].length))
+                        errors++;
         }
+        getnstimeofday(&stop);
 
-        return crc1;
-}
+        local_irq_restore(flags);
+        local_irq_enable();
 
-#define SIZE 64
-#define INIT1 0
-#define INIT2 0
+        nsec = stop.tv_nsec - start.tv_nsec +
+                1000000000 * (stop.tv_sec - start.tv_sec);
 
-int main(void)
-{
-        unsigned char buf1[SIZE + 4];
-        unsigned char buf2[SIZE + 4];
-        unsigned char buf3[SIZE + 4];
-        int i, j;
-        u32 crc1, crc2, crc3;
-
-        for (i = 0; i <= SIZE; i++) {
-                printf("\rTesting length %d...", i);
-                fflush(stdout);
-                random_garbage(buf1, i);
-                random_garbage(buf2, i);
-                for (j = 0; j < i; j++)
-                        buf3[j] = buf1[j] ^ buf2[j];
-
-                crc1 = test_step(INIT1, buf1, i);
-                crc2 = test_step(INIT2, buf2, i);
-                /* Now check that CRC(buf1 ^ buf2) = CRC(buf1) ^ CRC(buf2) */
-                crc3 = test_step(INIT1 ^ INIT2, buf3, i);
-                if (crc3 != (crc1 ^ crc2))
-                        printf("CRC XOR fail: 0x%08x != 0x%08x ^ 0x%08x\n",
-                               crc3, crc1, crc2);
+        pr_info("crc32: CRC_LE_BITS = %d, CRC_BE BITS = %d\n",
+                 CRC_LE_BITS, CRC_BE_BITS);
+
+        if (errors)
+                pr_warn("crc32: %d self tests failed\n", errors);
+        else {
+                pr_info("crc32: self tests passed, processed %d bytes in %lld nsec\n",
+                        bytes, nsec);
         }
-        printf("\nAll test complete.  No failures expected.\n");
+
         return 0;
 }
 
-#endif                          /* UNITTEST */
+static int __init crc32test_init(void)
+{
+        crc32_test();
+        crc32c_test();
+        return 0;
+}
+
+static void __exit crc32_exit(void)
+{
+}
+
+module_init(crc32test_init);
+module_exit(crc32_exit);
+#endif /* CONFIG_CRC32_SELFTEST */
diff --git a/lib/crc32defs.h b/lib/crc32defs.h
index 9b6773d73749..64cba2c3c700 100644
--- a/lib/crc32defs.h
+++ b/lib/crc32defs.h
@@ -6,27 +6,67 @@
 #define CRCPOLY_LE 0xedb88320
 #define CRCPOLY_BE 0x04c11db7
 
-/* How many bits at a time to use.  Requires a table of 4<<CRC_xx_BITS bytes. */
-/* For less performance-sensitive, use 4 */
-#ifndef CRC_LE_BITS 
+/*
+ * This is the CRC32c polynomial, as outlined by Castagnoli.
+ * x^32+x^28+x^27+x^26+x^25+x^23+x^22+x^20+x^19+x^18+x^14+x^13+x^11+x^10+x^9+
+ * x^8+x^6+x^0
+ */
+#define CRC32C_POLY_LE 0x82F63B78
+
+/* Try to choose an implementation variant via Kconfig */
+#ifdef CONFIG_CRC32_SLICEBY8
+# define CRC_LE_BITS 64
+# define CRC_BE_BITS 64
+#endif
+#ifdef CONFIG_CRC32_SLICEBY4
+# define CRC_LE_BITS 32
+# define CRC_BE_BITS 32
+#endif
+#ifdef CONFIG_CRC32_SARWATE
 # define CRC_LE_BITS 8
+# define CRC_BE_BITS 8
+#endif
+#ifdef CONFIG_CRC32_BIT
+# define CRC_LE_BITS 1
+# define CRC_BE_BITS 1
+#endif
+
+/*
+ * How many bits at a time to use.  Valid values are 1, 2, 4, 8, 32 and 64.
+ * For less performance-sensitive, use 4 or 8 to save table size.
+ * For larger systems choose same as CPU architecture as default.
+ * This works well on X86_64, SPARC64 systems. This may require some
+ * elaboration after experiments with other architectures.
+ */
+#ifndef CRC_LE_BITS
+#  ifdef CONFIG_64BIT
+#  define CRC_LE_BITS 64
+#  else
+#  define CRC_LE_BITS 32
+#  endif
 #endif
 #ifndef CRC_BE_BITS
-# define CRC_BE_BITS 8
+#  ifdef CONFIG_64BIT
+#  define CRC_BE_BITS 64
+#  else
+#  define CRC_BE_BITS 32
+#  endif
 #endif
 
 /*
  * Little-endian CRC computation.  Used with serial bit streams sent
  * lsbit-first.  Be sure to use cpu_to_le32() to append the computed CRC.
  */
-#if CRC_LE_BITS > 8 || CRC_LE_BITS < 1 || CRC_LE_BITS & CRC_LE_BITS-1
-# error CRC_LE_BITS must be a power of 2 between 1 and 8
+#if CRC_LE_BITS > 64 || CRC_LE_BITS < 1 || CRC_LE_BITS == 16 || \
+        CRC_LE_BITS & CRC_LE_BITS-1
+# error "CRC_LE_BITS must be one of {1, 2, 4, 8, 32, 64}"
 #endif
 
 /*
  * Big-endian CRC computation.  Used with serial bit streams sent
  * msbit-first.  Be sure to use cpu_to_be32() to append the computed CRC.
  */
-#if CRC_BE_BITS > 8 || CRC_BE_BITS < 1 || CRC_BE_BITS & CRC_BE_BITS-1
-# error CRC_BE_BITS must be a power of 2 between 1 and 8
+#if CRC_BE_BITS > 64 || CRC_BE_BITS < 1 || CRC_BE_BITS == 16 || \
+        CRC_BE_BITS & CRC_BE_BITS-1
+# error "CRC_BE_BITS must be one of {1, 2, 4, 8, 32, 64}"
 #endif
diff --git a/lib/ctype.c b/lib/ctype.c
index 26baa620e95b..c646df91a2f7 100644
--- a/lib/ctype.c
+++ b/lib/ctype.c
@@ -5,7 +5,8 @@
  */
 
 #include <linux/ctype.h>
-#include <linux/module.h>
+#include <linux/compiler.h>
+#include <linux/export.h>
 
 const unsigned char _ctype[] = {
 _C,_C,_C,_C,_C,_C,_C,_C,                                /* 0-7 */
diff --git a/lib/debug_locks.c b/lib/debug_locks.c
index b1c177307677..f2fa60c59343 100644
--- a/lib/debug_locks.c
+++ b/lib/debug_locks.c
@@ -10,7 +10,7 @@
  */
 #include <linux/rwsem.h>
 #include <linux/mutex.h>
-#include <linux/module.h>
+#include <linux/export.h>
 #include <linux/spinlock.h>
 #include <linux/debug_locks.h>
 
diff --git a/lib/dec_and_lock.c b/lib/dec_and_lock.c
index b5257725daad..e26278576b31 100644
--- a/lib/dec_and_lock.c
+++ b/lib/dec_and_lock.c
@@ -1,4 +1,4 @@
-#include <linux/module.h>
+#include <linux/export.h>
 #include <linux/spinlock.h>
 #include <linux/atomic.h>
 
diff --git a/lib/devres.c b/lib/devres.c
index 9676617b4486..80b9c76d436a 100644
--- a/lib/devres.c
+++ b/lib/devres.c
@@ -1,7 +1,7 @@
 #include <linux/pci.h>
 #include <linux/io.h>
 #include <linux/gfp.h>
-#include <linux/module.h>
+#include <linux/export.h>
 
 void devm_ioremap_release(struct device *dev, void *res)
 {
diff --git a/lib/div64.c b/lib/div64.c
index 5b4919191778..3ea24907d52e 100644
--- a/lib/div64.c
+++ b/lib/div64.c
@@ -16,7 +16,8 @@
  * assembly versions such as arch/ppc/lib/div64.S and arch/sh/lib/div64.S.
  */
 
-#include <linux/module.h>
+#include <linux/export.h>
+#include <linux/kernel.h>
 #include <linux/math64.h>
 
 /* Not needed on 64bit architectures */
diff --git a/lib/dump_stack.c b/lib/dump_stack.c
index 53bff4c8452b..42f4f55c9458 100644
--- a/lib/dump_stack.c
+++ b/lib/dump_stack.c
@@ -4,7 +4,7 @@
  */
 
 #include <linux/kernel.h>
-#include <linux/module.h>
+#include <linux/export.h>
 
 void dump_stack(void)
 {
diff --git a/lib/fault-inject.c b/lib/fault-inject.c
index b4801f51b607..6805453c18e7 100644
--- a/lib/fault-inject.c
+++ b/lib/fault-inject.c
@@ -5,7 +5,7 @@
 #include <linux/stat.h>
 #include <linux/types.h>
 #include <linux/fs.h>
-#include <linux/module.h>
+#include <linux/export.h>
 #include <linux/interrupt.h>
 #include <linux/stacktrace.h>
 #include <linux/fault-inject.h>
diff --git a/lib/find_last_bit.c b/lib/find_last_bit.c
index d903959ad695..91ca09fbf6f9 100644
--- a/lib/find_last_bit.c
+++ b/lib/find_last_bit.c
@@ -11,7 +11,7 @@
  */
 
 #include <linux/bitops.h>
-#include <linux/module.h>
+#include <linux/export.h>
 #include <asm/types.h>
 #include <asm/byteorder.h>
 
diff --git a/lib/find_next_bit.c b/lib/find_next_bit.c
index 4bd75a73ba00..0cbfc0b4398f 100644
--- a/lib/find_next_bit.c
+++ b/lib/find_next_bit.c
@@ -10,7 +10,7 @@
  */
 
 #include <linux/bitops.h>
-#include <linux/module.h>
+#include <linux/export.h>
 #include <asm/types.h>
 #include <asm/byteorder.h>
 
diff --git a/lib/flex_array.c b/lib/flex_array.c
index 9b8b89458c4c..6948a6692fc4 100644
--- a/lib/flex_array.c
+++ b/lib/flex_array.c
@@ -23,7 +23,7 @@
 #include <linux/flex_array.h>
 #include <linux/slab.h>
 #include <linux/stddef.h>
-#include <linux/module.h>
+#include <linux/export.h>
 #include <linux/reciprocal_div.h>
 
 struct flex_array_part {
diff --git a/lib/gcd.c b/lib/gcd.c
index f879033d9822..cce4f3cd14b3 100644
--- a/lib/gcd.c
+++ b/lib/gcd.c
@@ -1,6 +1,6 @@
 #include <linux/kernel.h>
 #include <linux/gcd.h>
-#include <linux/module.h>
+#include <linux/export.h>
 
 /* Greatest common divisor */
 unsigned long gcd(unsigned long a, unsigned long b)
diff --git a/lib/gen_crc32table.c b/lib/gen_crc32table.c
index 85d0e412a04f..8f8d5439e2d9 100644
--- a/lib/gen_crc32table.c
+++ b/lib/gen_crc32table.c
@@ -1,14 +1,29 @@
 #include <stdio.h>
+#include "../include/generated/autoconf.h"
 #include "crc32defs.h"
 #include <inttypes.h>
 
 #define ENTRIES_PER_LINE 4
 
-#define LE_TABLE_SIZE (1 << CRC_LE_BITS)
-#define BE_TABLE_SIZE (1 << CRC_BE_BITS)
+#if CRC_LE_BITS > 8
+# define LE_TABLE_ROWS (CRC_LE_BITS/8)
+# define LE_TABLE_SIZE 256
+#else
+# define LE_TABLE_ROWS 1
+# define LE_TABLE_SIZE (1 << CRC_LE_BITS)
+#endif
 
-static uint32_t crc32table_le[4][LE_TABLE_SIZE];
-static uint32_t crc32table_be[4][BE_TABLE_SIZE];
+#if CRC_BE_BITS > 8
+# define BE_TABLE_ROWS (CRC_BE_BITS/8)
+# define BE_TABLE_SIZE 256
+#else
+# define BE_TABLE_ROWS 1
+# define BE_TABLE_SIZE (1 << CRC_BE_BITS)
+#endif
+
+static uint32_t crc32table_le[LE_TABLE_ROWS][256];
+static uint32_t crc32table_be[BE_TABLE_ROWS][256];
+static uint32_t crc32ctable_le[LE_TABLE_ROWS][256];
 
 /**
  * crc32init_le() - allocate and initialize LE table data
@@ -17,27 +32,38 @@ static uint32_t crc32table_be[4][BE_TABLE_SIZE];
  * fact that crctable[i^j] = crctable[i] ^ crctable[j].
  *
  */
-static void crc32init_le(void)
+static void crc32init_le_generic(const uint32_t polynomial,
+                                 uint32_t (*tab)[256])
 {
         unsigned i, j;
         uint32_t crc = 1;
 
-        crc32table_le[0][0] = 0;
+        tab[0][0] = 0;
 
-        for (i = 1 << (CRC_LE_BITS - 1); i; i >>= 1) {
-                crc = (crc >> 1) ^ ((crc & 1) ? CRCPOLY_LE : 0);
+        for (i = LE_TABLE_SIZE >> 1; i; i >>= 1) {
+                crc = (crc >> 1) ^ ((crc & 1) ? polynomial : 0);
                 for (j = 0; j < LE_TABLE_SIZE; j += 2 * i)
-                        crc32table_le[0][i + j] = crc ^ crc32table_le[0][j];
+                        tab[0][i + j] = crc ^ tab[0][j];
         }
         for (i = 0; i < LE_TABLE_SIZE; i++) {
-                crc = crc32table_le[0][i];
-                for (j = 1; j < 4; j++) {
-                        crc = crc32table_le[0][crc & 0xff] ^ (crc >> 8);
-                        crc32table_le[j][i] = crc;
+                crc = tab[0][i];
+                for (j = 1; j < LE_TABLE_ROWS; j++) {
+                        crc = tab[0][crc & 0xff] ^ (crc >> 8);
+                        tab[j][i] = crc;
                 }
         }
 }
 
+static void crc32init_le(void)
+{
+        crc32init_le_generic(CRCPOLY_LE, crc32table_le);
+}
+
+static void crc32cinit_le(void)
+{
+        crc32init_le_generic(CRC32C_POLY_LE, crc32ctable_le);
+}
+
 /**
  * crc32init_be() - allocate and initialize BE table data
  */
@@ -55,18 +81,18 @@ static void crc32init_be(void)
         }
         for (i = 0; i < BE_TABLE_SIZE; i++) {
                 crc = crc32table_be[0][i];
-                for (j = 1; j < 4; j++) {
+                for (j = 1; j < BE_TABLE_ROWS; j++) {
                         crc = crc32table_be[0][(crc >> 24) & 0xff] ^ (crc << 8);
                         crc32table_be[j][i] = crc;
                 }
         }
 }
 
-static void output_table(uint32_t table[4][256], int len, char *trans)
+static void output_table(uint32_t (*table)[256], int rows, int len, char *trans)
 {
         int i, j;
 
-        for (j = 0 ; j < 4; j++) {
+        for (j = 0 ; j < rows; j++) {
                 printf("{");
                 for (i = 0; i < len - 1; i++) {
                         if (i % ENTRIES_PER_LINE == 0)
@@ -83,15 +109,30 @@ int main(int argc, char** argv)
 
         if (CRC_LE_BITS > 1) {
                 crc32init_le();
-                printf("static const u32 crc32table_le[4][256] = {");
-                output_table(crc32table_le, LE_TABLE_SIZE, "tole");
+                printf("static const u32 __cacheline_aligned "
+                       "crc32table_le[%d][%d] = {",
+                       LE_TABLE_ROWS, LE_TABLE_SIZE);
+                output_table(crc32table_le, LE_TABLE_ROWS,
+                             LE_TABLE_SIZE, "tole");
                 printf("};\n");
         }
 
         if (CRC_BE_BITS > 1) {
                 crc32init_be();
-                printf("static const u32 crc32table_be[4][256] = {");
-                output_table(crc32table_be, BE_TABLE_SIZE, "tobe");
+                printf("static const u32 __cacheline_aligned "
+                       "crc32table_be[%d][%d] = {",
+                       BE_TABLE_ROWS, BE_TABLE_SIZE);
+                output_table(crc32table_be, LE_TABLE_ROWS,
+                             BE_TABLE_SIZE, "tobe");
+                printf("};\n");
+        }
+        if (CRC_LE_BITS > 1) {
+                crc32cinit_le();
+                printf("static const u32 __cacheline_aligned "
+                       "crc32ctable_le[%d][%d] = {",
+                       LE_TABLE_ROWS, LE_TABLE_SIZE);
+                output_table(crc32ctable_le, LE_TABLE_ROWS,
+                             LE_TABLE_SIZE, "tole");
                 printf("};\n");
         }
 
diff --git a/lib/genalloc.c b/lib/genalloc.c
index f352cc42f4f8..6bc04aab6ec7 100644
--- a/lib/genalloc.c
+++ b/lib/genalloc.c
@@ -29,7 +29,7 @@
  */
 
 #include <linux/slab.h>
-#include <linux/module.h>
+#include <linux/export.h>
 #include <linux/bitmap.h>
 #include <linux/rculist.h>
 #include <linux/interrupt.h>
diff --git a/lib/halfmd4.c b/lib/halfmd4.c
index e11db26f8ae5..66d0ee8b7776 100644
--- a/lib/halfmd4.c
+++ b/lib/halfmd4.c
@@ -1,5 +1,5 @@
 #include <linux/kernel.h>
-#include <linux/module.h>
+#include <linux/export.h>
 #include <linux/cryptohash.h>
 
 /* F, G and H are basic MD4 functions: selection, majority, parity */
diff --git a/lib/hexdump.c b/lib/hexdump.c
index 51d5ae210244..6540d657dca4 100644
--- a/lib/hexdump.c
+++ b/lib/hexdump.c
@@ -10,7 +10,7 @@
 #include <linux/types.h>
 #include <linux/ctype.h>
 #include <linux/kernel.h>
-#include <linux/module.h>
+#include <linux/export.h>
 
 const char hex_asc[] = "0123456789abcdef";
 EXPORT_SYMBOL(hex_asc);
diff --git a/lib/hweight.c b/lib/hweight.c
index 3c79d50814cf..b7d81ba143d1 100644
--- a/lib/hweight.c
+++ b/lib/hweight.c
@@ -1,4 +1,4 @@
-#include <linux/module.h>
+#include <linux/export.h>
 #include <linux/bitops.h>
 #include <asm/types.h>
 
diff --git a/lib/idr.c b/lib/idr.c
index 12499ba7967e..4046e29c0a99 100644
--- a/lib/idr.c
+++ b/lib/idr.c
@@ -29,7 +29,7 @@
 #ifndef TEST                        // to test in user space...
 #include <linux/slab.h>
 #include <linux/init.h>
-#include <linux/module.h>
+#include <linux/export.h>
 #endif
 #include <linux/err.h>
 #include <linux/string.h>
diff --git a/lib/int_sqrt.c b/lib/int_sqrt.c
index fd355a99327c..fc2eeb7cb2ea 100644
--- a/lib/int_sqrt.c
+++ b/lib/int_sqrt.c
@@ -1,6 +1,6 @@
 
 #include <linux/kernel.h>
-#include <linux/module.h>
+#include <linux/export.h>
 
 /**
  * int_sqrt - rough approximation to sqrt
diff --git a/lib/iomap.c b/lib/iomap.c
index ada922a808e6..2c08f36862eb 100644
--- a/lib/iomap.c
+++ b/lib/iomap.c
@@ -6,7 +6,7 @@
 #include <linux/pci.h>
 #include <linux/io.h>
 
-#include <linux/module.h>
+#include <linux/export.h>
 
 /*
  * Read/write from/to an (offsettable) iomem cookie. It might be a PIO
diff --git a/lib/iomap_copy.c b/lib/iomap_copy.c
index 864fc5ea398c..4527e751b5e0 100644
--- a/lib/iomap_copy.c
+++ b/lib/iomap_copy.c
@@ -15,7 +15,7 @@
  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
  */
 
-#include <linux/module.h>
+#include <linux/export.h>
 #include <linux/io.h>
 
 /**
diff --git a/lib/iommu-helper.c b/lib/iommu-helper.c
index da053313ee5c..c27e269210c4 100644
--- a/lib/iommu-helper.c
+++ b/lib/iommu-helper.c
@@ -2,8 +2,9 @@
  * IOMMU helper functions for the free area management
  */
 
-#include <linux/module.h>
+#include <linux/export.h>
 #include <linux/bitmap.h>
+#include <linux/bug.h>
 
 int iommu_is_span_boundary(unsigned int index, unsigned int nr,
                            unsigned long shift,
diff --git a/lib/ioremap.c b/lib/ioremap.c
index da4e2ad74b68..0c9216c48762 100644
--- a/lib/ioremap.c
+++ b/lib/ioremap.c
@@ -9,7 +9,7 @@
 #include <linux/mm.h>
 #include <linux/sched.h>
 #include <linux/io.h>
-#include <linux/module.h>
+#include <linux/export.h>
 #include <asm/cacheflush.h>
 #include <asm/pgtable.h>
 
diff --git a/lib/irq_regs.c b/lib/irq_regs.c
index 753880a5440c..9c0a1d70fbe8 100644
--- a/lib/irq_regs.c
+++ b/lib/irq_regs.c
@@ -8,7 +8,8 @@
  * as published by the Free Software Foundation; either version
  * 2 of the License, or (at your option) any later version.
  */
-#include <linux/module.h>
+#include <linux/export.h>
+#include <linux/percpu.h>
 #include <asm/irq_regs.h>
 
 #ifndef ARCH_HAS_OWN_IRQ_REGS
diff --git a/lib/kasprintf.c b/lib/kasprintf.c
index 9c4233b23783..ae0de80c1c88 100644
--- a/lib/kasprintf.c
+++ b/lib/kasprintf.c
@@ -5,7 +5,7 @@
  */
 
 #include <stdarg.h>
-#include <linux/module.h>
+#include <linux/export.h>
 #include <linux/slab.h>
 #include <linux/types.h>
 #include <linux/string.h>
diff --git a/lib/klist.c b/lib/klist.c
index 573d6068a42e..0874e41609a6 100644
--- a/lib/klist.c
+++ b/lib/klist.c
@@ -35,7 +35,7 @@
  */
 
 #include <linux/klist.h>
-#include <linux/module.h>
+#include <linux/export.h>
 #include <linux/sched.h>
 
 /*
diff --git a/lib/kobject.c b/lib/kobject.c
index c33d7a18d635..21dee7c19afd 100644
--- a/lib/kobject.c
+++ b/lib/kobject.c
@@ -14,7 +14,7 @@
 
 #include <linux/kobject.h>
 #include <linux/string.h>
-#include <linux/module.h>
+#include <linux/export.h>
 #include <linux/stat.h>
 #include <linux/slab.h>
 
diff --git a/lib/kobject_uevent.c b/lib/kobject_uevent.c
index 75cbdb52bf5c..1a91efa6d121 100644
--- a/lib/kobject_uevent.c
+++ b/lib/kobject_uevent.c
@@ -17,7 +17,8 @@
 #include <linux/spinlock.h>
 #include <linux/string.h>
 #include <linux/kobject.h>
-#include <linux/module.h>
+#include <linux/export.h>
+#include <linux/kmod.h>
 #include <linux/slab.h>
 #include <linux/user_namespace.h>
 #include <linux/socket.h>
diff --git a/lib/kstrtox.c b/lib/kstrtox.c
index b1dd3e7d88cb..c3615eab0cc3 100644
--- a/lib/kstrtox.c
+++ b/lib/kstrtox.c
@@ -15,7 +15,7 @@
 #include <linux/errno.h>
 #include <linux/kernel.h>
 #include <linux/math64.h>
-#include <linux/module.h>
+#include <linux/export.h>
 #include <linux/types.h>
 #include <asm/uaccess.h>
 #include "kstrtox.h"
diff --git a/lib/lcm.c b/lib/lcm.c
index 10b5cfcacf6b..b9c8de461e9e 100644
--- a/lib/lcm.c
+++ b/lib/lcm.c
@@ -1,6 +1,6 @@
 #include <linux/kernel.h>
 #include <linux/gcd.h>
-#include <linux/module.h>
+#include <linux/export.h>
 #include <linux/lcm.h>
 
 /* Lowest common multiple */
diff --git a/lib/list_debug.c b/lib/list_debug.c
index b8029a5583ff..982b850d4e7a 100644
--- a/lib/list_debug.c
+++ b/lib/list_debug.c
@@ -6,8 +6,10 @@
  * DEBUG_LIST.
  */
 
-#include <linux/module.h>
+#include <linux/export.h>
 #include <linux/list.h>
+#include <linux/bug.h>
+#include <linux/kernel.h>
 
 /*
  * Insert a new entry between two known consecutive entries.
diff --git a/lib/llist.c b/lib/llist.c
index 700cff77a387..8221b3d2fbf0 100644
--- a/lib/llist.c
+++ b/lib/llist.c
@@ -23,7 +23,7 @@
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 #include <linux/kernel.h>
-#include <linux/module.h>
+#include <linux/export.h>
 #include <linux/interrupt.h>
 #include <linux/llist.h>
 
diff --git a/lib/locking-selftest.c b/lib/locking-selftest.c
index 507a22fab738..7aae0f2a5e0a 100644
--- a/lib/locking-selftest.c
+++ b/lib/locking-selftest.c
@@ -14,7 +14,6 @@
 #include <linux/mutex.h>
 #include <linux/sched.h>
 #include <linux/delay.h>
-#include <linux/module.h>
 #include <linux/lockdep.h>
 #include <linux/spinlock.h>
 #include <linux/kallsyms.h>
diff --git a/lib/md5.c b/lib/md5.c
index c777180e1f2f..958a3c15923c 100644
--- a/lib/md5.c
+++ b/lib/md5.c
@@ -1,5 +1,5 @@
 #include <linux/kernel.h>
-#include <linux/module.h>
+#include <linux/export.h>
 #include <linux/cryptohash.h>
 
 #define F1(x, y, z)     (z ^ (x & (y ^ z)))
diff --git a/lib/nlattr.c b/lib/nlattr.c
index a8408b6cacdf..4226dfeb5178 100644
--- a/lib/nlattr.c
+++ b/lib/nlattr.c
@@ -5,7 +5,7 @@
  *                              Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>
  */
 
-#include <linux/module.h>
+#include <linux/export.h>
 #include <linux/kernel.h>
 #include <linux/errno.h>
 #include <linux/jiffies.h>
diff --git a/lib/parser.c b/lib/parser.c
index dcbaaef6cf11..c43410084838 100644
--- a/lib/parser.c
+++ b/lib/parser.c
@@ -6,7 +6,8 @@
  */
 
 #include <linux/ctype.h>
-#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/export.h>
 #include <linux/parser.h>
 #include <linux/slab.h>
 #include <linux/string.h>
diff --git a/lib/plist.c b/lib/plist.c
index a0a4da489c22..6ab0e521c48b 100644
--- a/lib/plist.c
+++ b/lib/plist.c
@@ -23,6 +23,7 @@
  * information.
  */
 
+#include <linux/bug.h>
 #include <linux/plist.h>
 #include <linux/spinlock.h>
 
diff --git a/lib/prio_tree.c b/lib/prio_tree.c
index ccfd850b0dec..8d443af03b4c 100644
--- a/lib/prio_tree.c
+++ b/lib/prio_tree.c
@@ -85,6 +85,17 @@ static inline unsigned long prio_tree_maxindex(unsigned int bits)
         return index_bits_to_maxindex[bits - 1];
 }
 
+static void prio_set_parent(struct prio_tree_node *parent,
+                            struct prio_tree_node *child, bool left)
+{
+        if (left)
+                parent->left = child;
+        else
+                parent->right = child;
+
+        child->parent = parent;
+}
+
 /*
  * Extend a priority search tree so that it can store a node with heap_index
  * max_heap_index. In the worst case, this algorithm takes O((log n)^2).
@@ -94,45 +105,32 @@ static inline unsigned long prio_tree_maxindex(unsigned int bits)
 static struct prio_tree_node *prio_tree_expand(struct prio_tree_root *root,
                 struct prio_tree_node *node, unsigned long max_heap_index)
 {
-        struct prio_tree_node *first = NULL, *prev, *last = NULL;
+        struct prio_tree_node *prev;
 
         if (max_heap_index > prio_tree_maxindex(root->index_bits))
                 root->index_bits++;
 
+        prev = node;
+        INIT_PRIO_TREE_NODE(node);
+
         while (max_heap_index > prio_tree_maxindex(root->index_bits)) {
+                struct prio_tree_node *tmp = root->prio_tree_node;
+
                 root->index_bits++;
 
                 if (prio_tree_empty(root))
                         continue;
 
-                if (first == NULL) {
-                        first = root->prio_tree_node;
-                        prio_tree_remove(root, root->prio_tree_node);
-                        INIT_PRIO_TREE_NODE(first);
-                        last = first;
-                } else {
-                        prev = last;
-                        last = root->prio_tree_node;
-                        prio_tree_remove(root, root->prio_tree_node);
-                        INIT_PRIO_TREE_NODE(last);
-                        prev->left = last;
-                        last->parent = prev;
-                }
-        }
-
-        INIT_PRIO_TREE_NODE(node);
-
-        if (first) {
-                node->left = first;
-                first->parent = node;
-        } else
-                last = node;
+                prio_tree_remove(root, root->prio_tree_node);
+                INIT_PRIO_TREE_NODE(tmp);
 
-        if (!prio_tree_empty(root)) {
-                last->left = root->prio_tree_node;
-                last->left->parent = last;
+                prio_set_parent(prev, tmp, true);
+                prev = tmp;
         }
 
+        if (!prio_tree_empty(root))
+                prio_set_parent(prev, root->prio_tree_node, true);
+
         root->prio_tree_node = node;
         return node;
 }
@@ -151,25 +149,15 @@ struct prio_tree_node *prio_tree_replace(struct prio_tree_root *root,
                  * We can reduce root->index_bits here. However, it is complex
                  * and does not help much to improve performance (IMO).
                  */
-                node->parent = node;
                 root->prio_tree_node = node;
-        } else {
-                node->parent = old->parent;
-                if (old->parent->left == old)
-                        old->parent->left = node;
-                else
-                        old->parent->right = node;
-        }
+        } else
+                prio_set_parent(old->parent, node, old->parent->left == old);
 
-        if (!prio_tree_left_empty(old)) {
-                node->left = old->left;
-                old->left->parent = node;
-        }
+        if (!prio_tree_left_empty(old))
+                prio_set_parent(node, old->left, true);
 
-        if (!prio_tree_right_empty(old)) {
-                node->right = old->right;
-                old->right->parent = node;
-        }
+        if (!prio_tree_right_empty(old))
+                prio_set_parent(node, old->right, false);
 
         return old;
 }
@@ -229,16 +217,14 @@ struct prio_tree_node *prio_tree_insert(struct prio_tree_root *root,
                 if (index & mask) {
                         if (prio_tree_right_empty(cur)) {
                                 INIT_PRIO_TREE_NODE(node);
-                                cur->right = node;
-                                node->parent = cur;
+                                prio_set_parent(cur, node, false);
                                 return res;
                         } else
                                 cur = cur->right;
                 } else {
                         if (prio_tree_left_empty(cur)) {
                                 INIT_PRIO_TREE_NODE(node);
-                                cur->left = node;
-                                node->parent = cur;
+                                prio_set_parent(cur, node, true);
                                 return res;
                         } else
                                 cur = cur->left;
@@ -305,6 +291,40 @@ void prio_tree_remove(struct prio_tree_root *root, struct prio_tree_node *node)
                 cur = prio_tree_replace(root, cur->parent, cur);
 }
 
+static void iter_walk_down(struct prio_tree_iter *iter)
+{
+        iter->mask >>= 1;
+        if (iter->mask) {
+                if (iter->size_level)
+                        iter->size_level++;
+                return;
+        }
+
+        if (iter->size_level) {
+                BUG_ON(!prio_tree_left_empty(iter->cur));
+                BUG_ON(!prio_tree_right_empty(iter->cur));
+                iter->size_level++;
+                iter->mask = ULONG_MAX;
+        } else {
+                iter->size_level = 1;
+                iter->mask = 1UL << (BITS_PER_LONG - 1);
+        }
+}
+
+static void iter_walk_up(struct prio_tree_iter *iter)
+{
+        if (iter->mask == ULONG_MAX)
+                iter->mask = 1UL;
+        else if (iter->size_level == 1)
+                iter->mask = 1UL;
+        else
+                iter->mask <<= 1;
+        if (iter->size_level)
+                iter->size_level--;
+        if (!iter->size_level && (iter->value & iter->mask))
+                iter->value ^= iter->mask;
+}
+
 /*
  * Following functions help to enumerate all prio_tree_nodes in the tree that
  * overlap with the input interval X [radix_index, heap_index]. The enumeration
@@ -323,21 +343,7 @@ static struct prio_tree_node *prio_tree_left(struct prio_tree_iter *iter,
 
         if (iter->r_index <= *h_index) {
                 iter->cur = iter->cur->left;
-                iter->mask >>= 1;
-                if (iter->mask) {
-                        if (iter->size_level)
-                                iter->size_level++;
-                } else {
-                        if (iter->size_level) {
-                                BUG_ON(!prio_tree_left_empty(iter->cur));
-                                BUG_ON(!prio_tree_right_empty(iter->cur));
-                                iter->size_level++;
-                                iter->mask = ULONG_MAX;
-                        } else {
-                                iter->size_level = 1;
-                                iter->mask = 1UL << (BITS_PER_LONG - 1);
-                        }
-                }
+                iter_walk_down(iter);
                 return iter->cur;
         }
 
@@ -364,22 +370,7 @@ static struct prio_tree_node *prio_tree_right(struct prio_tree_iter *iter,
 
         if (iter->r_index <= *h_index) {
                 iter->cur = iter->cur->right;
-                iter->mask >>= 1;
-                iter->value = value;
-                if (iter->mask) {
-                        if (iter->size_level)
-                                iter->size_level++;
-                } else {
-                        if (iter->size_level) {
-                                BUG_ON(!prio_tree_left_empty(iter->cur));
-                                BUG_ON(!prio_tree_right_empty(iter->cur));
-                                iter->size_level++;
-                                iter->mask = ULONG_MAX;
-                        } else {
-                                iter->size_level = 1;
-                                iter->mask = 1UL << (BITS_PER_LONG - 1);
-                        }
-                }
+                iter_walk_down(iter);
                 return iter->cur;
         }
 
@@ -389,16 +380,7 @@ static struct prio_tree_node *prio_tree_right(struct prio_tree_iter *iter,
 static struct prio_tree_node *prio_tree_parent(struct prio_tree_iter *iter)
 {
         iter->cur = iter->cur->parent;
-        if (iter->mask == ULONG_MAX)
-                iter->mask = 1UL;
-        else if (iter->size_level == 1)
-                iter->mask = 1UL;
-        else
-                iter->mask <<= 1;
-        if (iter->size_level)
-                iter->size_level--;
-        if (!iter->size_level && (iter->value & iter->mask))
-                iter->value ^= iter->mask;
+        iter_walk_up(iter);
         return iter->cur;
 }
 
diff --git a/lib/radix-tree.c b/lib/radix-tree.c
index dc63d0818394..3e69c2b66c94 100644
--- a/lib/radix-tree.c
+++ b/lib/radix-tree.c
@@ -22,7 +22,7 @@
 #include <linux/errno.h>
 #include <linux/init.h>
 #include <linux/kernel.h>
-#include <linux/module.h>
+#include <linux/export.h>
 #include <linux/radix-tree.h>
 #include <linux/percpu.h>
 #include <linux/slab.h>
diff --git a/lib/random32.c b/lib/random32.c
index fc3545a32771..938bde5876ac 100644
--- a/lib/random32.c
+++ b/lib/random32.c
@@ -35,7 +35,7 @@
 
 #include <linux/types.h>
 #include <linux/percpu.h>
-#include <linux/module.h>
+#include <linux/export.h>
 #include <linux/jiffies.h>
 #include <linux/random.h>
 
diff --git a/lib/ratelimit.c b/lib/ratelimit.c
index c96d500577de..40e03ea2a967 100644
--- a/lib/ratelimit.c
+++ b/lib/ratelimit.c
@@ -11,7 +11,7 @@
 
 #include <linux/ratelimit.h>
 #include <linux/jiffies.h>
-#include <linux/module.h>
+#include <linux/export.h>
 
 /*
  * __ratelimit - rate limiting
diff --git a/lib/rational.c b/lib/rational.c
index 3ed247b80662..d326da3976f5 100644
--- a/lib/rational.c
+++ b/lib/rational.c
@@ -7,7 +7,8 @@
  */
 
 #include <linux/rational.h>
-#include <linux/module.h>
+#include <linux/compiler.h>
+#include <linux/export.h>
 
 /*
  * calculate best rational approximation for a given fraction
diff --git a/lib/rbtree.c b/lib/rbtree.c
index a16be19a1305..d4175565dc2c 100644
--- a/lib/rbtree.c
+++ b/lib/rbtree.c
@@ -21,7 +21,7 @@
 */
 
 #include <linux/rbtree.h>
-#include <linux/module.h>
+#include <linux/export.h>
 
 static void __rb_rotate_left(struct rb_node *node, struct rb_root *root)
 {
diff --git a/lib/rwsem-spinlock.c b/lib/rwsem-spinlock.c
index f2393c21fe85..7e0d6a58fc83 100644
--- a/lib/rwsem-spinlock.c
+++ b/lib/rwsem-spinlock.c
@@ -7,7 +7,7 @@
  */
 #include <linux/rwsem.h>
 #include <linux/sched.h>
-#include <linux/module.h>
+#include <linux/export.h>
 
 struct rwsem_waiter {
         struct list_head list;
diff --git a/lib/rwsem.c b/lib/rwsem.c
index 410aa1189b13..8337e1b9bb8d 100644
--- a/lib/rwsem.c
+++ b/lib/rwsem.c
@@ -6,7 +6,7 @@
 #include <linux/rwsem.h>
 #include <linux/sched.h>
 #include <linux/init.h>
-#include <linux/module.h>
+#include <linux/export.h>
 
 /*
  * Initialize an rwsem:
diff --git a/lib/scatterlist.c b/lib/scatterlist.c
index 33b2cbb97380..6096e89bee55 100644
--- a/lib/scatterlist.c
+++ b/lib/scatterlist.c
@@ -6,7 +6,7 @@
  * This source code is licensed under the GNU General Public License,
  * Version 2. See the file COPYING for more details.
  */
-#include <linux/module.h>
+#include <linux/export.h>
 #include <linux/slab.h>
 #include <linux/scatterlist.h>
 #include <linux/highmem.h>
diff --git a/lib/sha1.c b/lib/sha1.c
index 1de509a159c8..1df191e04a24 100644
--- a/lib/sha1.c
+++ b/lib/sha1.c
@@ -6,7 +6,7 @@
  */
 
 #include <linux/kernel.h>
-#include <linux/module.h>
+#include <linux/export.h>
 #include <linux/bitops.h>
 #include <linux/cryptohash.h>
 #include <asm/unaligned.h>
diff --git a/lib/smp_processor_id.c b/lib/smp_processor_id.c
index 503f087382a4..4c0d0e51d49e 100644
--- a/lib/smp_processor_id.c
+++ b/lib/smp_processor_id.c
@@ -3,7 +3,7 @@
  *
  * DEBUG_PREEMPT variant of smp_processor_id().
  */
-#include <linux/module.h>
+#include <linux/export.h>
 #include <linux/kallsyms.h>
 #include <linux/sched.h>
 
diff --git a/lib/spinlock_debug.c b/lib/spinlock_debug.c
index 5f3eacdd6178..525d160d44f0 100644
--- a/lib/spinlock_debug.c
+++ b/lib/spinlock_debug.c
@@ -11,7 +11,7 @@
 #include <linux/interrupt.h>
 #include <linux/debug_locks.h>
 #include <linux/delay.h>
-#include <linux/module.h>
+#include <linux/export.h>
 
 void __raw_spin_lock_init(raw_spinlock_t *lock, const char *name,
                           struct lock_class_key *key)
diff --git a/lib/string.c b/lib/string.c
index dc4a86341f91..e5878de4f101 100644
--- a/lib/string.c
+++ b/lib/string.c
@@ -22,7 +22,10 @@
 #include <linux/types.h>
 #include <linux/string.h>
 #include <linux/ctype.h>
-#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/export.h>
+#include <linux/bug.h>
+#include <linux/errno.h>
 
 #ifndef __HAVE_ARCH_STRNICMP
 /**
@@ -785,12 +788,24 @@ void *memchr_inv(const void *start, int c, size_t bytes)
         if (bytes <= 16)
                 return check_bytes8(start, value, bytes);
 
-        value64 = value | value << 8 | value << 16 | value << 24;
-        value64 = (value64 & 0xffffffff) | value64 << 32;
-        prefix = 8 - ((unsigned long)start) % 8;
+        value64 = value;
+#if defined(ARCH_HAS_FAST_MULTIPLIER) && BITS_PER_LONG == 64
+        value64 *= 0x0101010101010101;
+#elif defined(ARCH_HAS_FAST_MULTIPLIER)
+        value64 *= 0x01010101;
+        value64 |= value64 << 32;
+#else
+        value64 |= value64 << 8;
+        value64 |= value64 << 16;
+        value64 |= value64 << 32;
+#endif
 
+        prefix = (unsigned long)start % 8;
         if (prefix) {
-                u8 *r = check_bytes8(start, value, prefix);
+                u8 *r;
+
+                prefix = 8 - prefix;
+                r = check_bytes8(start, value, prefix);
                 if (r)
                         return r;
                 start += prefix;
diff --git a/lib/string_helpers.c b/lib/string_helpers.c
index ab431d4cc970..dd4ece372699 100644
--- a/lib/string_helpers.c
+++ b/lib/string_helpers.c
@@ -5,7 +5,7 @@
  */
 #include <linux/kernel.h>
 #include <linux/math64.h>
-#include <linux/module.h>
+#include <linux/export.h>
 #include <linux/string_helpers.h>
 
 /**
diff --git a/lib/swiotlb.c b/lib/swiotlb.c
index d0f6315f4a24..414f46ed1dcd 100644
--- a/lib/swiotlb.c
+++ b/lib/swiotlb.c
@@ -20,7 +20,7 @@
 #include <linux/cache.h>
 #include <linux/dma-mapping.h>
 #include <linux/mm.h>
-#include <linux/module.h>
+#include <linux/export.h>
 #include <linux/spinlock.h>
 #include <linux/string.h>
 #include <linux/swiotlb.h>
diff --git a/lib/syscall.c b/lib/syscall.c
index a4f7067f72fa..58710eefeac8 100644
--- a/lib/syscall.c
+++ b/lib/syscall.c
@@ -1,6 +1,6 @@
 #include <linux/ptrace.h>
 #include <linux/sched.h>
-#include <linux/module.h>
+#include <linux/export.h>
 #include <asm/syscall.h>
 
 static int collect_syscall(struct task_struct *target, long *callno,
diff --git a/lib/timerqueue.c b/lib/timerqueue.c
index 191176a43e9a..a382e4a32609 100644
--- a/lib/timerqueue.c
+++ b/lib/timerqueue.c
@@ -22,9 +22,10 @@
  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
+#include <linux/bug.h>
 #include <linux/timerqueue.h>
 #include <linux/rbtree.h>
-#include <linux/module.h>
+#include <linux/export.h>
 
 /**
  * timerqueue_add - Adds timer to timerqueue.
diff --git a/lib/uuid.c b/lib/uuid.c
index 8fadd7cef46c..52a6fe6387de 100644
--- a/lib/uuid.c
+++ b/lib/uuid.c
@@ -19,7 +19,7 @@
  */
 
 #include <linux/kernel.h>
-#include <linux/module.h>
+#include <linux/export.h>
 #include <linux/uuid.h>
 #include <linux/random.h>
 
diff --git a/lib/vsprintf.c b/lib/vsprintf.c
index 38e612e66da5..abbabec9720a 100644
--- a/lib/vsprintf.c
+++ b/lib/vsprintf.c
@@ -17,7 +17,7 @@
  */
 
 #include <stdarg.h>
-#include <linux/module.h>
+#include <linux/module.h>       /* for KSYM_SYMBOL_LEN */
 #include <linux/types.h>
 #include <linux/string.h>
 #include <linux/ctype.h>
@@ -212,6 +212,26 @@ char *put_dec(char *buf, unsigned long long num)
         }
 }
 
+/*
+ * Convert passed number to decimal string.
+ * Returns the length of string.  On buffer overflow, returns 0.
+ *
+ * If speed is not important, use snprintf(). It's easy to read the code.
+ */
+int num_to_str(char *buf, int size, unsigned long long num)
+{
+        char tmp[21];           /* Enough for 2^64 in decimal */
+        int idx, len;
+
+        len = put_dec(tmp, num) - tmp;
+
+        if (len > size)
+                return 0;
+        for (idx = 0; idx < len; ++idx)
+                buf[idx] = tmp[len - idx - 1];
+        return  len;
+}
+
 #define ZEROPAD 1               /* pad with zero */
 #define SIGN    2               /* unsigned/signed long */
 #define PLUS    4               /* show plus */