17 files changed, 92 insertions, 81 deletions

diff --git a/include/linux/Kbuild b/include/linux/Kbuild
index 327f60658d94..7d970678f940 100644
--- a/include/linux/Kbuild
+++ b/include/linux/Kbuild
@@ -250,6 +250,8 @@ unifdef-y += isdn.h
 unifdef-y += isdnif.h
 unifdef-y += isdn_divertif.h
 unifdef-y += isdn_ppp.h
+unifdef-y += ivtv.h
+unifdef-y += ivtvfb.h
 unifdef-y += joystick.h
 unifdef-y += kdev_t.h
 unifdef-y += kd.h
diff --git a/include/linux/capability.h b/include/linux/capability.h
index 02673846d205..9d1fe30b6f6c 100644
--- a/include/linux/capability.h
+++ b/include/linux/capability.h
@@ -503,8 +503,19 @@ extern const kernel_cap_t __cap_init_eff_set;
 
 kernel_cap_t cap_set_effective(const kernel_cap_t pE_new);
 
-int capable(int cap);
-int __capable(struct task_struct *t, int cap);
+/**
+ * has_capability - Determine if a task has a superior capability available
+ * @t: The task in question
+ * @cap: The capability to be tested for
+ *
+ * Return true if the specified task has the given superior capability
+ * currently in effect, false if not.
+ *
+ * Note that this does not set PF_SUPERPRIV on the task.
+ */
+#define has_capability(t, cap) (security_capable((t), (cap)) == 0)
+
+extern int capable(int cap);
 
 #endif /* __KERNEL__ */
 
diff --git a/include/linux/completion.h b/include/linux/completion.h
index 57faa60de9bd..02ef8835999c 100644
--- a/include/linux/completion.h
+++ b/include/linux/completion.h
@@ -49,6 +49,8 @@ extern unsigned long wait_for_completion_timeout(struct completion *x,
                                                    unsigned long timeout);
 extern unsigned long wait_for_completion_interruptible_timeout(
                         struct completion *x, unsigned long timeout);
+extern bool try_wait_for_completion(struct completion *x);
+extern bool completion_done(struct completion *x);
 
 extern void complete(struct completion *);
 extern void complete_all(struct completion *);
@@ -56,48 +58,4 @@ extern void complete_all(struct completion *);
 #define INIT_COMPLETION(x)      ((x).done = 0)
 
 
-/**
- *      try_wait_for_completion - try to decrement a completion without blocking
- *      @x:     completion structure
- *
- *      Returns: 0 if a decrement cannot be done without blocking
- *               1 if a decrement succeeded.
- *
- *      If a completion is being used as a counting completion,
- *      attempt to decrement the counter without blocking. This
- *      enables us to avoid waiting if the resource the completion
- *      is protecting is not available.
- */
-static inline bool try_wait_for_completion(struct completion *x)
-{
-        int ret = 1;
-
-        spin_lock_irq(&x->wait.lock);
-        if (!x->done)
-                ret = 0;
-        else
-                x->done--;
-        spin_unlock_irq(&x->wait.lock);
-        return ret;
-}
-
-/**
- *      completion_done - Test to see if a completion has any waiters
- *      @x:     completion structure
- *
- *      Returns: 0 if there are waiters (wait_for_completion() in progress)
- *               1 if there are no waiters.
- *
- */
-static inline bool completion_done(struct completion *x)
-{
-        int ret = 1;
-
-        spin_lock_irq(&x->wait.lock);
-        if (!x->done)
-                ret = 0;
-        spin_unlock_irq(&x->wait.lock);
-        return ret;
-}
-
 #endif
diff --git a/include/linux/ftrace.h b/include/linux/ftrace.h
index f368d041e02d..bb384068272e 100644
--- a/include/linux/ftrace.h
+++ b/include/linux/ftrace.h
@@ -98,6 +98,27 @@ static inline void tracer_disable(void)
 #endif
 }
 
+/* Ftrace disable/restore without lock. Some synchronization mechanism
+ * must be used to prevent ftrace_enabled to be changed between
+ * disable/restore. */
+static inline int __ftrace_enabled_save(void)
+{
+#ifdef CONFIG_FTRACE
+        int saved_ftrace_enabled = ftrace_enabled;
+        ftrace_enabled = 0;
+        return saved_ftrace_enabled;
+#else
+        return 0;
+#endif
+}
+
+static inline void __ftrace_enabled_restore(int enabled)
+{
+#ifdef CONFIG_FTRACE
+        ftrace_enabled = enabled;
+#endif
+}
+
 #ifdef CONFIG_FRAME_POINTER
 /* TODO: need to fix this for ARM */
 # define CALLER_ADDR0 ((unsigned long)__builtin_return_address(0))
diff --git a/include/linux/ivtv.h b/include/linux/ivtv.h
index 794b8daa9378..17ca64b5a66c 100644
--- a/include/linux/ivtv.h
+++ b/include/linux/ivtv.h
@@ -21,11 +21,7 @@
 #ifndef __LINUX_IVTV_H__
 #define __LINUX_IVTV_H__
 
-#ifdef __KERNEL__
-#include <linux/compiler.h> /* need __user */
-#else
-#define __user
-#endif
+#include <linux/compiler.h>
 #include <linux/types.h>
 
 /* ivtv knows several distinct output modes: MPEG streaming,
diff --git a/include/linux/ivtvfb.h b/include/linux/ivtvfb.h
index e980ba62ddcc..e20af47b59ad 100644
--- a/include/linux/ivtvfb.h
+++ b/include/linux/ivtvfb.h
@@ -21,11 +21,7 @@
 #ifndef __LINUX_IVTVFB_H__
 #define __LINUX_IVTVFB_H__
 
-#ifdef __KERNEL__
-#include <linux/compiler.h> /* need __user */
-#else
-#define __user
-#endif
+#include <linux/compiler.h>
 #include <linux/types.h>
 
 /* Framebuffer external API */
diff --git a/include/linux/kexec.h b/include/linux/kexec.h
index 32110cede64f..17f76fc05173 100644
--- a/include/linux/kexec.h
+++ b/include/linux/kexec.h
@@ -25,8 +25,8 @@
 #error KEXEC_CONTROL_MEMORY_LIMIT not defined
 #endif
 
-#ifndef KEXEC_CONTROL_CODE_SIZE
-#error KEXEC_CONTROL_CODE_SIZE not defined
+#ifndef KEXEC_CONTROL_PAGE_SIZE
+#error KEXEC_CONTROL_PAGE_SIZE not defined
 #endif
 
 #ifndef KEXEC_ARCH
diff --git a/include/linux/mm.h b/include/linux/mm.h
index fa651609b65d..72a15dc26bbf 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -73,7 +73,7 @@ extern unsigned int kobjsize(const void *objp);
 #endif
 
 /*
- * vm_flags..
+ * vm_flags in vm_area_struct, see mm_types.h.
  */
 #define VM_READ         0x00000001      /* currently active flags */
 #define VM_WRITE        0x00000002
diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h
index 386edbe2cb4e..bf334138c7c1 100644
--- a/include/linux/mm_types.h
+++ b/include/linux/mm_types.h
@@ -113,7 +113,7 @@ struct vm_area_struct {
         struct vm_area_struct *vm_next;
 
         pgprot_t vm_page_prot;          /* Access permissions of this VMA. */
-        unsigned long vm_flags;         /* Flags, listed below. */
+        unsigned long vm_flags;         /* Flags, see mm.h. */
 
         struct rb_node vm_rb;
 
diff --git a/include/linux/reboot.h b/include/linux/reboot.h
index b93b541cf111..988e55fe649b 100644
--- a/include/linux/reboot.h
+++ b/include/linux/reboot.h
@@ -59,6 +59,7 @@ extern void machine_crash_shutdown(struct pt_regs *);
  * Architecture independent implemenations of sys_reboot commands.
  */
 
+extern void kernel_restart_prepare(char *cmd);
 extern void kernel_restart(char *cmd);
 extern void kernel_halt(void);
 extern void kernel_power_off(void);
diff --git a/include/linux/security.h b/include/linux/security.h
index fd96e7f8a6f9..80c4d002864c 100644
--- a/include/linux/security.h
+++ b/include/linux/security.h
@@ -46,8 +46,8 @@ struct audit_krule;
  */
 extern int cap_capable(struct task_struct *tsk, int cap);
 extern int cap_settime(struct timespec *ts, struct timezone *tz);
-extern int cap_ptrace(struct task_struct *parent, struct task_struct *child,
-                      unsigned int mode);
+extern int cap_ptrace_may_access(struct task_struct *child, unsigned int mode);
+extern int cap_ptrace_traceme(struct task_struct *parent);
 extern int cap_capget(struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted);
 extern int cap_capset_check(struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted);
 extern void cap_capset_set(struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted);
@@ -1157,17 +1157,24 @@ static inline void security_free_mnt_opts(struct security_mnt_opts *opts)
  *      @alter contains the flag indicating whether changes are to be made.
  *      Return 0 if permission is granted.
  *
- * @ptrace:
- *      Check permission before allowing the @parent process to trace the
+ * @ptrace_may_access:
+ *      Check permission before allowing the current process to trace the
  *      @child process.
  *      Security modules may also want to perform a process tracing check
  *      during an execve in the set_security or apply_creds hooks of
  *      binprm_security_ops if the process is being traced and its security
  *      attributes would be changed by the execve.
- *      @parent contains the task_struct structure for parent process.
- *      @child contains the task_struct structure for child process.
+ *      @child contains the task_struct structure for the target process.
  *      @mode contains the PTRACE_MODE flags indicating the form of access.
  *      Return 0 if permission is granted.
+ * @ptrace_traceme:
+ *      Check that the @parent process has sufficient permission to trace the
+ *      current process before allowing the current process to present itself
+ *      to the @parent process for tracing.
+ *      The parent process will still have to undergo the ptrace_may_access
+ *      checks before it is allowed to trace this one.
+ *      @parent contains the task_struct structure for debugger process.
+ *      Return 0 if permission is granted.
  * @capget:
  *      Get the @effective, @inheritable, and @permitted capability sets for
  *      the @target process.  The hook may also perform permission checking to
@@ -1287,8 +1294,8 @@ static inline void security_free_mnt_opts(struct security_mnt_opts *opts)
 struct security_operations {
         char name[SECURITY_NAME_MAX + 1];
 
-        int (*ptrace) (struct task_struct *parent, struct task_struct *child,
-                       unsigned int mode);
+        int (*ptrace_may_access) (struct task_struct *child, unsigned int mode);
+        int (*ptrace_traceme) (struct task_struct *parent);
         int (*capget) (struct task_struct *target,
                        kernel_cap_t *effective,
                        kernel_cap_t *inheritable, kernel_cap_t *permitted);
@@ -1560,8 +1567,8 @@ extern struct dentry *securityfs_create_dir(const char *name, struct dentry *par
 extern void securityfs_remove(struct dentry *dentry);
 
 /* Security operations */
-int security_ptrace(struct task_struct *parent, struct task_struct *child,
-                    unsigned int mode);
+int security_ptrace_may_access(struct task_struct *child, unsigned int mode);
+int security_ptrace_traceme(struct task_struct *parent);
 int security_capget(struct task_struct *target,
                     kernel_cap_t *effective,
                     kernel_cap_t *inheritable,
@@ -1742,11 +1749,15 @@ static inline int security_init(void)
         return 0;
 }
 
-static inline int security_ptrace(struct task_struct *parent,
-                                  struct task_struct *child,
-                                  unsigned int mode)
+static inline int security_ptrace_may_access(struct task_struct *child,
+                                             unsigned int mode)
+{
+        return cap_ptrace_may_access(child, mode);
+}
+
+static inline int security_ptrace_traceme(struct task_struct *parent)
 {
-        return cap_ptrace(parent, child, mode);
+        return cap_ptrace_traceme(parent);
 }
 
 static inline int security_capget(struct task_struct *target,
diff --git a/include/linux/suspend.h b/include/linux/suspend.h
index c63435095970..2ce8207686e2 100644
--- a/include/linux/suspend.h
+++ b/include/linux/suspend.h
@@ -217,11 +217,11 @@ struct platform_hibernation_ops {
 #ifdef CONFIG_HIBERNATION
 /* kernel/power/snapshot.c */
 extern void __register_nosave_region(unsigned long b, unsigned long e, int km);
-static inline void register_nosave_region(unsigned long b, unsigned long e)
+static inline void __init register_nosave_region(unsigned long b, unsigned long e)
 {
         __register_nosave_region(b, e, 0);
 }
-static inline void register_nosave_region_late(unsigned long b, unsigned long e)
+static inline void __init register_nosave_region_late(unsigned long b, unsigned long e)
 {
         __register_nosave_region(b, e, 1);
 }
diff --git a/include/linux/tty.h b/include/linux/tty.h
index e3579cb086e0..0cbec74ec086 100644
--- a/include/linux/tty.h
+++ b/include/linux/tty.h
@@ -331,6 +331,8 @@ extern int tty_write_room(struct tty_struct *tty);
 extern void tty_driver_flush_buffer(struct tty_struct *tty);
 extern void tty_throttle(struct tty_struct *tty);
 extern void tty_unthrottle(struct tty_struct *tty);
+extern int tty_do_resize(struct tty_struct *tty, struct tty_struct *real_tty,
+                                                struct winsize *ws);
 
 extern int is_current_pgrp_orphaned(void);
 extern struct pid *tty_get_pgrp(struct tty_struct *tty);
diff --git a/include/linux/tty_driver.h b/include/linux/tty_driver.h
index e1065ac0d922..16d27944c321 100644
--- a/include/linux/tty_driver.h
+++ b/include/linux/tty_driver.h
@@ -168,6 +168,18 @@
  *
  *      Optional: If not provided then the write method is called under
  *      the atomic write lock to keep it serialized with the ldisc.
+ *
+ * int (*resize)(struct tty_struct *tty, struct tty_struct *real_tty,
+ *                              unsigned int rows, unsigned int cols);
+ *
+ *      Called when a termios request is issued which changes the
+ *      requested terminal geometry.
+ *
+ *      Optional: the default action is to update the termios structure
+ *      without error. This is usually the correct behaviour. Drivers should
+ *      not force errors here if they are not resizable objects (eg a serial
+ *      line). See tty_do_resize() if you need to wrap the standard method
+ *      in your own logic - the usual case.
  */
 
 #include <linux/fs.h>
@@ -206,6 +218,8 @@ struct tty_operations {
         int (*tiocmget)(struct tty_struct *tty, struct file *file);
         int (*tiocmset)(struct tty_struct *tty, struct file *file,
                         unsigned int set, unsigned int clear);
+        int (*resize)(struct tty_struct *tty, struct tty_struct *real_tty,
+                                struct winsize *ws);
 #ifdef CONFIG_CONSOLE_POLL
         int (*poll_init)(struct tty_driver *driver, int line, char *options);
         int (*poll_get_char)(struct tty_driver *driver, int line);
diff --git a/include/linux/videodev2.h b/include/linux/videodev2.h
index e466bd54a50e..e65a6bed4e3e 100644
--- a/include/linux/videodev2.h
+++ b/include/linux/videodev2.h
@@ -55,13 +55,13 @@
  */
 #ifndef __LINUX_VIDEODEV2_H
 #define __LINUX_VIDEODEV2_H
+
 #ifdef __KERNEL__
 #include <linux/time.h>     /* need struct timeval */
-#include <linux/compiler.h> /* need __user */
 #else
-#define __user
 #include <sys/time.h>
 #endif
+#include <linux/compiler.h>
 #include <linux/ioctl.h>
 #include <linux/types.h>
 
diff --git a/include/linux/vmalloc.h b/include/linux/vmalloc.h
index 364789aae9f3..328eb4022727 100644
--- a/include/linux/vmalloc.h
+++ b/include/linux/vmalloc.h
@@ -4,9 +4,9 @@
 #include <linux/spinlock.h>
 #include <asm/page.h>           /* pgprot_t */
 
-struct vm_area_struct;
+struct vm_area_struct;          /* vma defining user mapping in mm_types.h */
 
-/* bits in vm_struct->flags */
+/* bits in flags of vmalloc's vm_struct below */
 #define VM_IOREMAP      0x00000001      /* ioremap() and friends */
 #define VM_ALLOC        0x00000002      /* vmalloc() */
 #define VM_MAP          0x00000004      /* vmap()ed pages */
diff --git a/include/linux/vt_kern.h b/include/linux/vt_kern.h
index 1c78d56c57e5..1cbd0a7db4e6 100644
--- a/include/linux/vt_kern.h
+++ b/include/linux/vt_kern.h
@@ -35,7 +35,6 @@ extern int fg_console, last_console, want_console;
 int vc_allocate(unsigned int console);
 int vc_cons_allocated(unsigned int console);
 int vc_resize(struct vc_data *vc, unsigned int cols, unsigned int lines);
-int vc_lock_resize(struct vc_data *vc, unsigned int cols, unsigned int lines);
 void vc_deallocate(unsigned int console);
 void reset_palette(struct vc_data *vc);
 void do_blank_screen(int entering_gfx);