7 files changed, 153 insertions, 4 deletions

diff --git a/include/linux/bitmap.h b/include/linux/bitmap.h
index d9ed27969855..dcc5de7cc487 100644
--- a/include/linux/bitmap.h
+++ b/include/linux/bitmap.h
@@ -24,6 +24,9 @@
  * The available bitmap operations and their rough meaning in the
  * case that the bitmap is a single unsigned long are thus:
  *
+ * Note that nbits should be always a compile time evaluable constant.
+ * Otherwise many inlines will generate horrible code.
+ *
  * bitmap_zero(dst, nbits)                      *dst = 0UL
  * bitmap_fill(dst, nbits)                      *dst = ~0UL
  * bitmap_copy(dst, src, nbits)                 *dst = *src
@@ -244,6 +247,8 @@ static inline int bitmap_full(const unsigned long *src, int nbits)
 
 static inline int bitmap_weight(const unsigned long *src, int nbits)
 {
+        if (nbits <= BITS_PER_LONG)
+                return hweight_long(*src & BITMAP_LAST_WORD_MASK(nbits));
         return __bitmap_weight(src, nbits);
 }
 
diff --git a/include/linux/compat.h b/include/linux/compat.h
index dda1697ec753..9760753e662b 100644
--- a/include/linux/compat.h
+++ b/include/linux/compat.h
@@ -226,5 +226,7 @@ static inline int compat_timespec_compare(struct compat_timespec *lhs,
 
 asmlinkage long compat_sys_adjtimex(struct compat_timex __user *utp);
 
+extern int compat_printk(const char *fmt, ...);
+
 #endif /* CONFIG_COMPAT */
 #endif /* _LINUX_COMPAT_H */
diff --git a/include/linux/kernel.h b/include/linux/kernel.h
index 3c5e4c2e517d..5c1ec1f84eab 100644
--- a/include/linux/kernel.h
+++ b/include/linux/kernel.h
@@ -32,6 +32,7 @@ extern const char linux_banner[];
 
 #define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
 #define ALIGN(x,a) (((x)+(a)-1)&~((a)-1))
+#define FIELD_SIZEOF(t, f) (sizeof(((t*)0)->f))
 
 #define KERN_EMERG      "<0>"   /* system is unusable                   */
 #define KERN_ALERT      "<1>"   /* action must be taken immediately     */
@@ -336,6 +337,12 @@ struct sysinfo {
 /* Force a compilation error if condition is true */
 #define BUILD_BUG_ON(condition) ((void)sizeof(char[1 - 2*!!(condition)]))
 
+/* Force a compilation error if condition is true, but also produce a
+   result (of value 0 and type size_t), so the expression can be used
+   e.g. in a structure initializer (or where-ever else comma expressions
+   aren't permitted). */
+#define BUILD_BUG_ON_ZERO(e) (sizeof(char[1 - 2 * !!(e)]) - 1)
+
 /* Trap pasters of __FUNCTION__ at compile-time */
 #define __FUNCTION__ (__func__)
 
diff --git a/include/linux/module.h b/include/linux/module.h
index 2d366098eab5..9ebbb74b7b72 100644
--- a/include/linux/module.h
+++ b/include/linux/module.h
@@ -285,6 +285,9 @@ struct module
         /* The size of the executable code in each section.  */
         unsigned long init_text_size, core_text_size;
 
+        /* The handle returned from unwind_add_table. */
+        void *unwind_info;
+
         /* Arch-specific module values */
         struct mod_arch_specific arch;
 
diff --git a/include/linux/sysctl.h b/include/linux/sysctl.h
index 6a60770984e9..349ef908a222 100644
--- a/include/linux/sysctl.h
+++ b/include/linux/sysctl.h
@@ -148,9 +148,11 @@ enum
         KERN_SPIN_RETRY=70,     /* int: number of spinlock retries */
         KERN_ACPI_VIDEO_FLAGS=71, /* int: flags for setting up video after ACPI sleep */
         KERN_IA64_UNALIGNED=72, /* int: ia64 unaligned userland trap enable */
+        KERN_COMPAT_LOG=73,     /* int: print compat layer  messages */
 };
 
 
+
 /* CTL_VM names: */
 enum
 {
diff --git a/include/linux/time.h b/include/linux/time.h
index 65dd85b2105e..c05f8bb9a323 100644
--- a/include/linux/time.h
+++ b/include/linux/time.h
@@ -28,10 +28,13 @@ struct timezone {
 #ifdef __KERNEL__
 
 /* Parameters used to convert the timespec values: */
-#define MSEC_PER_SEC            1000L
-#define USEC_PER_SEC            1000000L
-#define NSEC_PER_SEC            1000000000L
-#define NSEC_PER_USEC           1000L
+#define MSEC_PER_SEC    1000L
+#define USEC_PER_MSEC   1000L
+#define NSEC_PER_USEC   1000L
+#define NSEC_PER_MSEC   1000000L
+#define USEC_PER_SEC    1000000L
+#define NSEC_PER_SEC    1000000000L
+#define FSEC_PER_SEC    1000000000000000L
 
 static inline int timespec_equal(struct timespec *a, struct timespec *b)
 {
diff --git a/include/linux/unwind.h b/include/linux/unwind.h
new file mode 100644
index 000000000000..ce48e2cd37a2
--- /dev/null
+++ b/include/linux/unwind.h
@@ -0,0 +1,127 @@
+#ifndef _LINUX_UNWIND_H
+#define _LINUX_UNWIND_H
+
+/*
+ * Copyright (C) 2002-2006 Novell, Inc.
+ *      Jan Beulich <jbeulich@novell.com>
+ * This code is released under version 2 of the GNU GPL.
+ *
+ * A simple API for unwinding kernel stacks.  This is used for
+ * debugging and error reporting purposes.  The kernel doesn't need
+ * full-blown stack unwinding with all the bells and whistles, so there
+ * is not much point in implementing the full Dwarf2 unwind API.
+ */
+
+#include <linux/config.h>
+
+struct module;
+
+#ifdef CONFIG_STACK_UNWIND
+
+#include <asm/unwind.h>
+
+#ifndef ARCH_UNWIND_SECTION_NAME
+#define ARCH_UNWIND_SECTION_NAME ".eh_frame"
+#endif
+
+/*
+ * Initialize unwind support.
+ */
+extern void unwind_init(void);
+
+#ifdef CONFIG_MODULES
+
+extern void *unwind_add_table(struct module *,
+                              const void *table_start,
+                              unsigned long table_size);
+
+extern void unwind_remove_table(void *handle, int init_only);
+
+#endif
+
+extern int unwind_init_frame_info(struct unwind_frame_info *,
+                                  struct task_struct *,
+                                  /*const*/ struct pt_regs *);
+
+/*
+ * Prepare to unwind a blocked task.
+ */
+extern int unwind_init_blocked(struct unwind_frame_info *,
+                               struct task_struct *);
+
+/*
+ * Prepare to unwind the currently running thread.
+ */
+extern int unwind_init_running(struct unwind_frame_info *,
+                               asmlinkage int (*callback)(struct unwind_frame_info *,
+                                                          void *arg),
+                               void *arg);
+
+/*
+ * Unwind to previous to frame.  Returns 0 if successful, negative
+ * number in case of an error.
+ */
+extern int unwind(struct unwind_frame_info *);
+
+/*
+ * Unwind until the return pointer is in user-land (or until an error
+ * occurs).  Returns 0 if successful, negative number in case of
+ * error.
+ */
+extern int unwind_to_user(struct unwind_frame_info *);
+
+#else
+
+struct unwind_frame_info {};
+
+static inline void unwind_init(void) {}
+
+#ifdef CONFIG_MODULES
+
+static inline void *unwind_add_table(struct module *mod,
+                                     const void *table_start,
+                                     unsigned long table_size)
+{
+        return NULL;
+}
+
+#endif
+
+static inline void unwind_remove_table(void *handle, int init_only)
+{
+}
+
+static inline int unwind_init_frame_info(struct unwind_frame_info *info,
+                                         struct task_struct *tsk,
+                                         const struct pt_regs *regs)
+{
+        return -ENOSYS;
+}
+
+static inline int unwind_init_blocked(struct unwind_frame_info *info,
+                                      struct task_struct *tsk)
+{
+        return -ENOSYS;
+}
+
+static inline int unwind_init_running(struct unwind_frame_info *info,
+                                      asmlinkage int (*cb)(struct unwind_frame_info *,
+                                                           void *arg),
+                                      void *arg)
+{
+        return -ENOSYS;
+}
+
+static inline int unwind(struct unwind_frame_info *info)
+{
+        return -ENOSYS;
+}
+
+static inline int unwind_to_user(struct unwind_frame_info *info)
+{
+        return -ENOSYS;
+}
+
+#endif
+
+#endif /* _LINUX_UNWIND_H */