Sanitise linux/sched.h for userspace consumption

There was a whole load of crap exposed which should have been inside the
existing #ifdef __KERNEL__ part. Also hide struct sched_param for now,
since glibc has its own and doesn't like being given ours (yet).

Signed-off-by: David Woodhouse <dwmw2@infradead.org>

include/linux/sched.h

@@ -1,7 +1,44 @@
 #ifndef _LINUX_SCHED_H
 #define _LINUX_SCHED_H
 
+#include <linux/auxvec.h>	/* For AT_VECTOR_SIZE */
+
+/*
+ * cloning flags:
+ */
+#define CSIGNAL		0x000000ff	/* signal mask to be sent at exit */
+#define CLONE_VM	0x00000100	/* set if VM shared between processes */
+#define CLONE_FS	0x00000200	/* set if fs info shared between processes */
+#define CLONE_FILES	0x00000400	/* set if open files shared between processes */
+#define CLONE_SIGHAND	0x00000800	/* set if signal handlers and blocked signals shared */
+#define CLONE_PTRACE	0x00002000	/* set if we want to let tracing continue on the child too */
+#define CLONE_VFORK	0x00004000	/* set if the parent wants the child to wake it up on mm_release */
+#define CLONE_PARENT	0x00008000	/* set if we want to have the same parent as the cloner */
+#define CLONE_THREAD	0x00010000	/* Same thread group? */
+#define CLONE_NEWNS	0x00020000	/* New namespace group? */
+#define CLONE_SYSVSEM	0x00040000	/* share system V SEM_UNDO semantics */
+#define CLONE_SETTLS	0x00080000	/* create a new TLS for the child */
+#define CLONE_PARENT_SETTID	0x00100000	/* set the TID in the parent */
+#define CLONE_CHILD_CLEARTID	0x00200000	/* clear the TID in the child */
+#define CLONE_DETACHED		0x00400000	/* Unused, ignored */
+#define CLONE_UNTRACED		0x00800000	/* set if the tracing process can't force CLONE_PTRACE on this clone */
+#define CLONE_CHILD_SETTID	0x01000000	/* set the TID in the child */
+#define CLONE_STOPPED		0x02000000	/* Start in stopped state */
+
+/*
+ * Scheduling policies
+ */
+#define SCHED_NORMAL		0
+#define SCHED_FIFO		1
+#define SCHED_RR		2
+#define SCHED_BATCH		3
+
 #ifdef __KERNEL__
+
+struct sched_param {
+	int sched_priority;
+};
+
 #include <asm/param.h>	/* for HZ */
 
 #include <linux/capability.h>
@@ -44,34 +81,9 @@
 #include <linux/hrtimer.h>
 
 #include <asm/processor.h>
-#endif
-
-#include <linux/auxvec.h>	/* For AT_VECTOR_SIZE */
 
 struct exec_domain;
 
-/*
- * cloning flags:
- */
-#define CSIGNAL		0x000000ff	/* signal mask to be sent at exit */
-#define CLONE_VM	0x00000100	/* set if VM shared between processes */
-#define CLONE_FS	0x00000200	/* set if fs info shared between processes */
-#define CLONE_FILES	0x00000400	/* set if open files shared between processes */
-#define CLONE_SIGHAND	0x00000800	/* set if signal handlers and blocked signals shared */
-#define CLONE_PTRACE	0x00002000	/* set if we want to let tracing continue on the child too */
-#define CLONE_VFORK	0x00004000	/* set if the parent wants the child to wake it up on mm_release */
-#define CLONE_PARENT	0x00008000	/* set if we want to have the same parent as the cloner */
-#define CLONE_THREAD	0x00010000	/* Same thread group? */
-#define CLONE_NEWNS	0x00020000	/* New namespace group? */
-#define CLONE_SYSVSEM	0x00040000	/* share system V SEM_UNDO semantics */
-#define CLONE_SETTLS	0x00080000	/* create a new TLS for the child */
-#define CLONE_PARENT_SETTID	0x00100000	/* set the TID in the parent */
-#define CLONE_CHILD_CLEARTID	0x00200000	/* clear the TID in the child */
-#define CLONE_DETACHED		0x00400000	/* Unused, ignored */
-#define CLONE_UNTRACED		0x00800000	/* set if the tracing process can't force CLONE_PTRACE on this clone */
-#define CLONE_CHILD_SETTID	0x01000000	/* set the TID in the child */
-#define CLONE_STOPPED		0x02000000	/* Start in stopped state */
-
 /*
  * List of flags we want to share for kernel threads,
  * if only because they are not used by them anyway.
@@ -158,20 +170,6 @@ extern unsigned long nr_iowait(void);
 /* Task command name length */
 #define TASK_COMM_LEN 16
 
-/*
- * Scheduling policies
- */
-#define SCHED_NORMAL		0
-#define SCHED_FIFO		1
-#define SCHED_RR		2
-#define SCHED_BATCH		3
-
-struct sched_param {
-	int sched_priority;
-};
-
-#ifdef __KERNEL__
-
 #include <linux/spinlock.h>
 
 /*