More 2.4.6 stuff; JFS is out (not really ready for prime time yet); MOSIX

is in.

3 files changed, 1051 insertions, 25 deletions

diff --git a/sys-kernel/linux-sources/files/2.4.6/sched.h b/sys-kernel/linux-sources/files/2.4.6/sched.h
new file mode 100644
index 000000000000..438203f84cdd
--- /dev/null
+++ b/sys-kernel/linux-sources/files/2.4.6/sched.h
@@ -0,0 +1,997 @@
+#ifndef _LINUX_SCHED_H
+#define _LINUX_SCHED_H
+
+#include <asm/param.h>	/* for HZ */
+
+extern unsigned long event;
+
+#include <linux/config.h>
+#include <linux/binfmts.h>
+#include <linux/personality.h>
+#include <linux/threads.h>
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/times.h>
+#include <linux/timex.h>
+
+#include <asm/system.h>
+#include <asm/semaphore.h>
+#include <asm/page.h>
+#include <asm/ptrace.h>
+#include <asm/mmu.h>
+
+#include <linux/smp.h>
+#include <linux/tty.h>
+#include <linux/sem.h>
+#include <linux/signal.h>
+#include <linux/securebits.h>
+
+#ifdef CONFIG_MOSIX
+#include <mos/mosixtask.h>
+#else
+#define MOSIX_INIT_TASK(tsk)
+#endif CONFIG_MOSIX
+
+#include <linux/fs_struct.h>
+
+/*
+ * 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_PID	0x00001000	/* set if pid 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_SIGNAL	(CLONE_SIGHAND | CLONE_THREAD)
+
+/*
+ * These are the constant used to fake the fixed-point load-average
+ * counting. Some notes:
+ *  - 11 bit fractions expand to 22 bits by the multiplies: this gives
+ *    a load-average precision of 10 bits integer + 11 bits fractional
+ *  - if you want to count load-averages more often, you need more
+ *    precision, or rounding will get you. With 2-second counting freq,
+ *    the EXP_n values would be 1981, 2034 and 2043 if still using only
+ *    11 bit fractions.
+ */
+extern unsigned long avenrun[];		/* Load averages */
+
+#define FSHIFT		11		/* nr of bits of precision */
+#define FIXED_1		(1<<FSHIFT)	/* 1.0 as fixed-point */
+#define LOAD_FREQ	(5*HZ)		/* 5 sec intervals */
+#define EXP_1		1884		/* 1/exp(5sec/1min) as fixed-point */
+#define EXP_5		2014		/* 1/exp(5sec/5min) */
+#define EXP_15		2037		/* 1/exp(5sec/15min) */
+
+#define CALC_LOAD(load,exp,n) \
+	load *= exp; \
+	load += n*(FIXED_1-exp); \
+	load >>= FSHIFT;
+
+#define CT_TO_SECS(x)	((x) / HZ)
+#define CT_TO_USECS(x)	(((x) % HZ) * 1000000/HZ)
+
+extern int nr_running, nr_threads;
+extern int last_pid;
+
+#include <linux/fs.h>
+#include <linux/time.h>
+#include <linux/param.h>
+#include <linux/resource.h>
+#include <linux/timer.h>
+
+#include <asm/processor.h>
+
+#define TASK_RUNNING		0
+#define TASK_INTERRUPTIBLE	1
+#define TASK_UNINTERRUPTIBLE	2
+#define TASK_ZOMBIE		4
+#define TASK_STOPPED		8
+#ifdef CONFIG_MOSIX
+#define	TASK_SAME		16
+#endif CONFIG_MOSIX
+
+#define __set_task_state(tsk, state_value)		\
+	do { (tsk)->state = (state_value); } while (0)
+#ifdef CONFIG_SMP
+#define set_task_state(tsk, state_value)		\
+	set_mb((tsk)->state, (state_value))
+#else
+#define set_task_state(tsk, state_value)		\
+	__set_task_state((tsk), (state_value))
+#endif
+
+#define __set_current_state(state_value)			\
+	do { current->state = (state_value); } while (0)
+#ifdef CONFIG_SMP
+#define set_current_state(state_value)		\
+	set_mb(current->state, (state_value))
+#else
+#define set_current_state(state_value)		\
+	__set_current_state(state_value)
+#endif
+
+/*
+ * Scheduling policies
+ */
+#define SCHED_OTHER		0
+#define SCHED_FIFO		1
+#define SCHED_RR		2
+
+/*
+ * This is an additional bit set when we want to
+ * yield the CPU for one re-schedule..
+ */
+#define SCHED_YIELD		0x10
+
+struct sched_param {
+	int sched_priority;
+};
+
+#ifdef __KERNEL__
+
+#include <linux/spinlock.h>
+
+/*
+ * This serializes "schedule()" and also protects
+ * the run-queue from deletions/modifications (but
+ * _adding_ to the beginning of the run-queue has
+ * a separate lock).
+ */
+extern rwlock_t tasklist_lock;
+extern spinlock_t runqueue_lock;
+extern spinlock_t mmlist_lock;
+
+extern void sched_init(void);
+extern void init_idle(void);
+extern void show_state(void);
+extern void cpu_init (void);
+extern void trap_init(void);
+extern void update_process_times(int user);
+extern void update_one_process(struct task_struct *p, unsigned long user,
+			       unsigned long system, int cpu);
+
+#define	MAX_SCHEDULE_TIMEOUT	LONG_MAX
+extern signed long FASTCALL(schedule_timeout(signed long timeout));
+asmlinkage void schedule(void);
+
+extern int schedule_task(struct tq_struct *task);
+extern void flush_scheduled_tasks(void);
+extern int start_context_thread(void);
+extern int current_is_keventd(void);
+
+/*
+ * The default fd array needs to be at least BITS_PER_LONG,
+ * as this is the granularity returned by copy_fdset().
+ */
+#define NR_OPEN_DEFAULT BITS_PER_LONG
+
+/*
+ * Open file table structure
+ */
+struct files_struct {
+	atomic_t count;
+	rwlock_t file_lock;	/* Protects all the below members.  Nests inside tsk->alloc_lock */
+	int max_fds;
+	int max_fdset;
+	int next_fd;
+	struct file ** fd;	/* current fd array */
+	fd_set *close_on_exec;
+	fd_set *open_fds;
+	fd_set close_on_exec_init;
+	fd_set open_fds_init;
+	struct file * fd_array[NR_OPEN_DEFAULT];
+#ifdef CONFIG_MOSIX_DFSA
+	atomic_t users;		/* the real count, excluding /proc grabs */
+	int count_dropped_to_one;
+	int maxclosed;
+	fd_set *closed;
+	fd_set closed_fds_init;
+	int maxopened;
+	fd_set *opened;
+	fd_set opened_fds_init;
+	int maxmod;
+	fd_set *modified;
+	fd_set modified_fds_init;
+#define	INIT_FILES_DFSA , users : ATOMIC_INIT(1), \
+			  closed: &init_files.closed_fds_init, \
+			  opened: &init_files.opened_fds_init, \
+			  modified: &init_files.modified_fds_init,
+#else
+#define	INIT_FILES_DFSA
+#endif CONFIG_MOSIX_DFSA
+};
+
+#define INIT_FILES \
+{ 							\
+	count:		ATOMIC_INIT(1), 		\
+	file_lock:	RW_LOCK_UNLOCKED, 		\
+	max_fds:	NR_OPEN_DEFAULT, 		\
+	max_fdset:	__FD_SETSIZE, 			\
+	next_fd:	0, 				\
+	fd:		&init_files.fd_array[0], 	\
+	close_on_exec:	&init_files.close_on_exec_init, \
+	open_fds:	&init_files.open_fds_init, 	\
+	close_on_exec_init: { { 0, } }, 		\
+	open_fds_init:	{ { 0, } }, 			\
+	fd_array:	{ NULL, } 			\
+	INIT_FILES_DFSA					\
+}
+
+/* Maximum number of active map areas.. This is a random (large) number */
+#define MAX_MAP_COUNT	(65536)
+
+/* Number of map areas at which the AVL tree is activated. This is arbitrary. */
+#define AVL_MIN_MAP_COUNT	32
+
+struct mm_struct {
+	struct vm_area_struct * mmap;		/* list of VMAs */
+	struct vm_area_struct * mmap_avl;	/* tree of VMAs */
+	struct vm_area_struct * mmap_cache;	/* last find_vma result */
+	pgd_t * pgd;
+	atomic_t mm_users;			/* How many users with user space? */
+	atomic_t mm_count;			/* How many references to "struct mm_struct" (users count as 1) */
+	int map_count;				/* number of VMAs */
+	struct rw_semaphore mmap_sem;
+	spinlock_t page_table_lock;		/* Protects task page tables and mm->rss */
+
+	struct list_head mmlist;		/* List of all active mm's.  These are globally strung
+						 * together off init_mm.mmlist, and are protected
+						 * by mmlist_lock
+						 */
+
+	unsigned long start_code, end_code, start_data, end_data;
+	unsigned long start_brk, brk, start_stack;
+	unsigned long arg_start, arg_end, env_start, env_end;
+	unsigned long rss, total_vm, locked_vm;
+	unsigned long def_flags;
+	unsigned long cpu_vm_mask;
+	unsigned long swap_address;
+
+	/* Architecture-specific MM context */
+	mm_context_t context;
+#ifdef CONFIG_MOSIX
+	atomic_t mm_kiocount;
+	atomic_t mm_realusers;
+	unsigned long last_memsort;
+	int used, unused, swapped;	/* break-down of memory pages */
+	int private_unused;		/* unused but not active/inactive */
+	int mark;
+#define	INIT_MM_MOSIX	mm_kiocount: ATOMIC_INIT(0), mm_realusers: ATOMIC_INIT(1),
+#else
+#define	INIT_MM_MOSIX
+#endif CONFIG_MOSIX
+};
+
+extern int mmlist_nr;
+
+#define INIT_MM(name) \
+{			 				\
+	mmap:		&init_mmap, 			\
+	mmap_avl:	NULL, 				\
+	mmap_cache:	NULL, 				\
+	pgd:		swapper_pg_dir, 		\
+	mm_users:	ATOMIC_INIT(2), 		\
+	mm_count:	ATOMIC_INIT(1), 		\
+	map_count:	1, 				\
+	mmap_sem:	__RWSEM_INITIALIZER(name.mmap_sem), \
+	page_table_lock: SPIN_LOCK_UNLOCKED, 		\
+	mmlist:		LIST_HEAD_INIT(name.mmlist),	\
+	INIT_MM_MOSIX					\
+}
+
+struct signal_struct {
+	atomic_t		count;
+	struct k_sigaction	action[_NSIG];
+	spinlock_t		siglock;
+};
+
+
+#define INIT_SIGNALS {	\
+	count:		ATOMIC_INIT(1), 		\
+	action:		{ {{0,}}, }, 			\
+	siglock:	SPIN_LOCK_UNLOCKED 		\
+}
+
+/*
+ * Some day this will be a full-fledged user tracking system..
+ */
+struct user_struct {
+	atomic_t __count;	/* reference count */
+	atomic_t processes;	/* How many processes does this user have? */
+	atomic_t files;		/* How many open files does this user have? */
+
+	/* Hash table maintenance information */
+	struct user_struct *next, **pprev;
+	uid_t uid;
+};
+
+#define get_current_user() ({ 				\
+	struct user_struct *__user = current->user;	\
+	atomic_inc(&__user->__count);			\
+	__user; })
+
+extern struct user_struct root_user;
+#define INIT_USER (&root_user)
+
+struct task_struct {
+	/*
+	 * offsets of these are hardcoded elsewhere - touch with care
+	 */
+	volatile long state;	/* -1 unrunnable, 0 runnable, >0 stopped */
+	unsigned long flags;	/* per process flags, defined below */
+	int sigpending;
+	mm_segment_t addr_limit;	/* thread address space:
+					 	0-0xBFFFFFFF for user-thead
+						0-0xFFFFFFFF for kernel-thread
+					 */
+	struct exec_domain *exec_domain;
+	volatile long need_resched;
+	unsigned long ptrace;
+
+	int lock_depth;		/* Lock depth */
+
+/*
+ * offset 32 begins here on 32-bit platforms. We keep
+ * all fields in a single cacheline that are needed for
+ * the goodness() loop in schedule().
+ */
+	long counter;
+	long nice;
+	unsigned long policy;
+	struct mm_struct *mm;
+	int has_cpu, processor;
+	unsigned long cpus_allowed;
+	/*
+	 * (only the 'next' pointer fits into the cacheline, but
+	 * that's just fine.)
+	 */
+	struct list_head run_list;
+	unsigned long sleep_time;
+
+	struct task_struct *next_task, *prev_task;
+	struct mm_struct *active_mm;
+
+/* task state */
+	struct linux_binfmt *binfmt;
+	int exit_code, exit_signal;
+	int pdeath_signal;  /*  The signal sent when the parent dies  */
+	/* ??? */
+	unsigned long personality;
+	int dumpable:1;
+	int did_exec:1;
+	pid_t pid;
+	pid_t pgrp;
+	pid_t tty_old_pgrp;
+	pid_t session;
+	pid_t tgid;
+	/* boolean value for session group leader */
+	int leader;
+	/* 
+	 * pointers to (original) parent process, youngest child, younger sibling,
+	 * older sibling, respectively.  (p->father can be replaced with 
+	 * p->p_pptr->pid)
+	 */
+	struct task_struct *p_opptr, *p_pptr, *p_cptr, *p_ysptr, *p_osptr;
+	struct list_head thread_group;
+
+	/* PID hash table linkage. */
+	struct task_struct *pidhash_next;
+	struct task_struct **pidhash_pprev;
+
+	wait_queue_head_t wait_chldexit;	/* for wait4() */
+	struct semaphore *vfork_sem;		/* for vfork() */
+	unsigned long rt_priority;
+	unsigned long it_real_value, it_prof_value, it_virt_value;
+	unsigned long it_real_incr, it_prof_incr, it_virt_incr;
+	struct timer_list real_timer;
+	struct tms times;
+	unsigned long start_time;
+	long per_cpu_utime[NR_CPUS], per_cpu_stime[NR_CPUS];
+/* mm fault and swap info: this can arguably be seen as either mm-specific or thread-specific */
+	unsigned long min_flt, maj_flt, nswap, cmin_flt, cmaj_flt, cnswap;
+	int swappable:1;
+/* process credentials */
+	uid_t uid,euid,suid,fsuid;
+	gid_t gid,egid,sgid,fsgid;
+	int ngroups;
+	gid_t	groups[NGROUPS];
+	kernel_cap_t   cap_effective, cap_inheritable, cap_permitted;
+	int keep_capabilities:1;
+	struct user_struct *user;
+/* limits */
+	struct rlimit rlim[RLIM_NLIMITS];
+	unsigned short used_math;
+	char comm[16];
+/* file system info */
+	int link_count;
+	struct tty_struct *tty; /* NULL if no tty */
+	unsigned int locks; /* How many file locks are being held */
+/* ipc stuff */
+	struct sem_undo *semundo;
+	struct sem_queue *semsleeping;
+/* CPU-specific state of this task */
+	struct thread_struct thread;
+/* filesystem information */
+	struct fs_struct *fs;
+/* open file information */
+	struct files_struct *files;
+/* signal handlers */
+	spinlock_t sigmask_lock;	/* Protects signal and blocked */
+	struct signal_struct *sig;
+
+	sigset_t blocked;
+	struct sigpending pending;
+
+	unsigned long sas_ss_sp;
+	size_t sas_ss_size;
+	int (*notifier)(void *priv);
+	void *notifier_data;
+	sigset_t *notifier_mask;
+	
+/* Thread group tracking */
+   	u32 parent_exec_id;
+   	u32 self_exec_id;
+/* Protection of (de-)allocation: mm, files, fs, tty */
+	spinlock_t alloc_lock;
+#ifdef CONFIG_MOSIX
+	struct mosix_task mosix;
+#endif CONFIG_MOSIX
+	void *journal_info;
+};
+
+/*
+ * Per process flags
+ */
+#define PF_ALIGNWARN	0x00000001	/* Print alignment warning msgs */
+					/* Not implemented yet, only for 486*/
+#define PF_STARTING	0x00000002	/* being created */
+#define PF_EXITING	0x00000004	/* getting shut down */
+#define PF_FORKNOEXEC	0x00000040	/* forked but didn't exec */
+#define PF_SUPERPRIV	0x00000100	/* used super-user privileges */
+#define PF_DUMPCORE	0x00000200	/* dumped core */
+#define PF_SIGNALED	0x00000400	/* killed by a signal */
+#define PF_MEMALLOC	0x00000800	/* Allocating memory */
+#define PF_VFORK	0x00001000	/* Wake up parent in mm_release */
+
+#define PF_USEDFPU	0x00100000	/* task used FPU this quantum (SMP) */
+
+/*
+ * Ptrace flags
+ */
+
+#define PT_PTRACED	0x00000001
+#define PT_TRACESYS	0x00000002
+#define PT_DTRACE	0x00000004	/* delayed trace (used on m68k, i386) */
+#define PT_TRACESYSGOOD	0x00000008
+
+/*
+ * Limit the stack by to some sane default: root can always
+ * increase this limit if needed..  8MB seems reasonable.
+ */
+#define _STK_LIM	(8*1024*1024)
+
+#define DEF_COUNTER	(10*HZ/100)	/* 100 ms time slice */
+#define MAX_COUNTER	(20*HZ/100)
+#define DEF_NICE	(0)
+
+/*
+ *  INIT_TASK is used to set up the first task table, touch at
+ * your own risk!. Base=0, limit=0x1fffff (=2MB)
+ */
+#define INIT_TASK(tsk)	\
+{									\
+    state:		0,						\
+    flags:		0,						\
+    sigpending:		0,						\
+    addr_limit:		KERNEL_DS,					\
+    exec_domain:	&default_exec_domain,				\
+    lock_depth:		-1,						\
+    counter:		DEF_COUNTER,					\
+    nice:		DEF_NICE,					\
+    policy:		SCHED_OTHER,					\
+    mm:			NULL,						\
+    active_mm:		&init_mm,					\
+    cpus_allowed:	-1,						\
+    run_list:		LIST_HEAD_INIT(tsk.run_list),			\
+    next_task:		&tsk,						\
+    prev_task:		&tsk,						\
+    p_opptr:		&tsk,						\
+    p_pptr:		&tsk,						\
+    thread_group:	LIST_HEAD_INIT(tsk.thread_group),		\
+    wait_chldexit:	__WAIT_QUEUE_HEAD_INITIALIZER(tsk.wait_chldexit),\
+    real_timer:		{						\
+	function:		it_real_fn				\
+    },									\
+    cap_effective:	CAP_INIT_EFF_SET,				\
+    cap_inheritable:	CAP_INIT_INH_SET,				\
+    cap_permitted:	CAP_FULL_SET,					\
+    keep_capabilities:	0,						\
+    rlim:		INIT_RLIMITS,					\
+    user:		INIT_USER,					\
+    comm:		"swapper",					\
+    thread:		INIT_THREAD,					\
+    fs:			&init_fs,					\
+    files:		&init_files,					\
+    sigmask_lock:	SPIN_LOCK_UNLOCKED,				\
+    sig:		&init_signals,					\
+    pending:		{ NULL, &tsk.pending.head, {{0}}},		\
+    blocked:		{{0}},						\
+    alloc_lock:		SPIN_LOCK_UNLOCKED,				\
+    MOSIX_INIT_TASK(tsk),						\
+	journal_info: NULL \
+}
+
+
+#ifndef INIT_TASK_SIZE
+# define INIT_TASK_SIZE	2048*sizeof(long)
+#endif
+
+union task_union {
+	struct task_struct task;
+	unsigned long stack[INIT_TASK_SIZE/sizeof(long)];
+};
+
+extern union task_union init_task_union;
+
+extern struct   mm_struct init_mm;
+extern struct task_struct *init_tasks[NR_CPUS];
+
+/* PID hashing. (shouldnt this be dynamic?) */
+#define PIDHASH_SZ (4096 >> 2)
+extern struct task_struct *pidhash[PIDHASH_SZ];
+
+#define pid_hashfn(x)	((((x) >> 8) ^ (x)) & (PIDHASH_SZ - 1))
+
+static inline void hash_pid(struct task_struct *p)
+{
+	struct task_struct **htable = &pidhash[pid_hashfn(p->pid)];
+
+	if((p->pidhash_next = *htable) != NULL)
+		(*htable)->pidhash_pprev = &p->pidhash_next;
+	*htable = p;
+	p->pidhash_pprev = htable;
+}
+
+static inline void unhash_pid(struct task_struct *p)
+{
+	if(p->pidhash_next)
+		p->pidhash_next->pidhash_pprev = p->pidhash_pprev;
+	*p->pidhash_pprev = p->pidhash_next;
+}
+
+static inline struct task_struct *find_task_by_pid(int pid)
+{
+	struct task_struct *p, **htable = &pidhash[pid_hashfn(pid)];
+
+	for(p = *htable; p && p->pid != pid; p = p->pidhash_next)
+		;
+#ifdef CONFIG_MOSIX
+	if(p && (p->mosix.dflags & DREMOTE))
+		p = NULL;
+#endif CONFIG_MOSIX
+	return p;
+}
+
+#ifdef CONFIG_MOSIX
+static inline struct task_struct *find_any_task_by_pid(int pid)
+{
+	struct task_struct *p, **htable = &pidhash[pid_hashfn(pid)];
+
+	for(p = *htable; p && p->pid != pid; p = p->pidhash_next)
+		;
+	return p;
+}
+#endif CONFIG_MOSIX
+
+/* per-UID process charging. */
+extern struct user_struct * alloc_uid(uid_t);
+extern void free_uid(struct user_struct *);
+
+#include <asm/current.h>
+
+extern unsigned long volatile jiffies;
+extern unsigned long itimer_ticks;
+extern unsigned long itimer_next;
+extern struct timeval xtime;
+extern void do_timer(struct pt_regs *);
+
+extern unsigned int * prof_buffer;
+extern unsigned long prof_len;
+extern unsigned long prof_shift;
+
+#define CURRENT_TIME (xtime.tv_sec)
+
+extern void FASTCALL(__wake_up(wait_queue_head_t *q, unsigned int mode, int nr));
+extern void FASTCALL(__wake_up_sync(wait_queue_head_t *q, unsigned int mode, int nr));
+extern void FASTCALL(sleep_on(wait_queue_head_t *q));
+extern long FASTCALL(sleep_on_timeout(wait_queue_head_t *q,
+				      signed long timeout));
+extern void FASTCALL(interruptible_sleep_on(wait_queue_head_t *q));
+extern long FASTCALL(interruptible_sleep_on_timeout(wait_queue_head_t *q,
+						    signed long timeout));
+extern int FASTCALL(wake_up_process(struct task_struct * tsk));
+
+#define wake_up(x)			__wake_up((x),TASK_UNINTERRUPTIBLE | TASK_INTERRUPTIBLE, 1)
+#define wake_up_nr(x, nr)		__wake_up((x),TASK_UNINTERRUPTIBLE | TASK_INTERRUPTIBLE, nr)
+#define wake_up_all(x)			__wake_up((x),TASK_UNINTERRUPTIBLE | TASK_INTERRUPTIBLE, 0)
+#define wake_up_sync(x)			__wake_up_sync((x),TASK_UNINTERRUPTIBLE | TASK_INTERRUPTIBLE, 1)
+#define wake_up_sync_nr(x, nr)		__wake_up_sync((x),TASK_UNINTERRUPTIBLE | TASK_INTERRUPTIBLE, nr)
+#define wake_up_interruptible(x)	__wake_up((x),TASK_INTERRUPTIBLE, 1)
+#define wake_up_interruptible_nr(x, nr)	__wake_up((x),TASK_INTERRUPTIBLE, nr)
+#define wake_up_interruptible_all(x)	__wake_up((x),TASK_INTERRUPTIBLE, 0)
+#define wake_up_interruptible_sync(x)	__wake_up_sync((x),TASK_INTERRUPTIBLE, 1)
+#define wake_up_interruptible_sync_nr(x) __wake_up_sync((x),TASK_INTERRUPTIBLE,  nr)
+asmlinkage long sys_wait4(pid_t pid,unsigned int * stat_addr, int options, struct rusage * ru);
+
+extern int in_group_p(gid_t);
+extern int in_egroup_p(gid_t);
+
+extern void proc_caches_init(void);
+extern void flush_signals(struct task_struct *);
+extern void flush_signal_handlers(struct task_struct *);
+extern int dequeue_signal(sigset_t *, siginfo_t *);
+extern void block_all_signals(int (*notifier)(void *priv), void *priv,
+			      sigset_t *mask);
+extern void unblock_all_signals(void);
+extern int send_sig_info(int, struct siginfo *, struct task_struct *);
+extern int force_sig_info(int, struct siginfo *, struct task_struct *);
+extern int kill_pg_info(int, struct siginfo *, pid_t);
+extern int kill_sl_info(int, struct siginfo *, pid_t);
+extern int kill_proc_info(int, struct siginfo *, pid_t);
+extern void notify_parent(struct task_struct *, int);
+extern void do_notify_parent(struct task_struct *, int);
+extern void force_sig(int, struct task_struct *);
+extern int send_sig(int, struct task_struct *, int);
+extern int kill_pg(pid_t, int, int);
+extern int kill_sl(pid_t, int, int);
+extern int kill_proc(pid_t, int, int);
+extern int do_sigaction(int, const struct k_sigaction *, struct k_sigaction *);
+extern int do_sigaltstack(const stack_t *, stack_t *, unsigned long);
+
+static inline int signal_pending(struct task_struct *p)
+{
+	return (p->sigpending != 0);
+}
+
+/*
+ * Re-calculate pending state from the set of locally pending
+ * signals, globally pending signals, and blocked signals.
+ */
+static inline int has_pending_signals(sigset_t *signal, sigset_t *blocked)
+{
+	unsigned long ready;
+	long i;
+
+	switch (_NSIG_WORDS) {
+	default:
+		for (i = _NSIG_WORDS, ready = 0; --i >= 0 ;)
+			ready |= signal->sig[i] &~ blocked->sig[i];
+		break;
+
+	case 4: ready  = signal->sig[3] &~ blocked->sig[3];
+		ready |= signal->sig[2] &~ blocked->sig[2];
+		ready |= signal->sig[1] &~ blocked->sig[1];
+		ready |= signal->sig[0] &~ blocked->sig[0];
+		break;
+
+	case 2: ready  = signal->sig[1] &~ blocked->sig[1];
+		ready |= signal->sig[0] &~ blocked->sig[0];
+		break;
+
+	case 1: ready  = signal->sig[0] &~ blocked->sig[0];
+	}
+	return ready !=	0;
+}
+
+/* Reevaluate whether the task has signals pending delivery.
+   This is required every time the blocked sigset_t changes.
+   All callers should have t->sigmask_lock.  */
+
+static inline void recalc_sigpending(struct task_struct *t)
+{
+#ifdef CONFIG_MOSIX
+	t->mosix.ignoreoldsigs = 0;
+	if(t->mosix.dflags & DHEAVYSLEEP)
+		t->sigpending = 0;
+	else if(t->mosix.dflags & DFAKESIGNAL)
+		t->sigpending = 1;
+	else
+#endif CONFIG_MOSIX
+	t->sigpending = has_pending_signals(&t->pending.signal, &t->blocked);
+}
+
+/* True if we are on the alternate signal stack.  */
+
+static inline int on_sig_stack(unsigned long sp)
+{
+	return (sp - current->sas_ss_sp < current->sas_ss_size);
+}
+
+static inline int sas_ss_flags(unsigned long sp)
+{
+	return (current->sas_ss_size == 0 ? SS_DISABLE
+		: on_sig_stack(sp) ? SS_ONSTACK : 0);
+}
+
+extern int request_irq(unsigned int,
+		       void (*handler)(int, void *, struct pt_regs *),
+		       unsigned long, const char *, void *);
+extern void free_irq(unsigned int, void *);
+
+/*
+ * This has now become a routine instead of a macro, it sets a flag if
+ * it returns true (to do BSD-style accounting where the process is flagged
+ * if it uses root privs). The implication of this is that you should do
+ * normal permissions checks first, and check suser() last.
+ *
+ * [Dec 1997 -- Chris Evans]
+ * For correctness, the above considerations need to be extended to
+ * fsuser(). This is done, along with moving fsuser() checks to be
+ * last.
+ *
+ * These will be removed, but in the mean time, when the SECURE_NOROOT 
+ * flag is set, uids don't grant privilege.
+ */
+static inline int suser(void)
+{
+	if (!issecure(SECURE_NOROOT) && current->euid == 0) { 
+		current->flags |= PF_SUPERPRIV;
+		return 1;
+	}
+	return 0;
+}
+
+static inline int fsuser(void)
+{
+	if (!issecure(SECURE_NOROOT) && current->fsuid == 0) {
+		current->flags |= PF_SUPERPRIV;
+		return 1;
+	}
+	return 0;
+}
+
+/*
+ * capable() checks for a particular capability.  
+ * New privilege checks should use this interface, rather than suser() or
+ * fsuser(). See include/linux/capability.h for defined capabilities.
+ */
+
+static inline int capable(int cap)
+{
+#if 1 /* ok now */
+	if (cap_raised(current->cap_effective, cap))
+#else
+	if (cap_is_fs_cap(cap) ? current->fsuid == 0 : current->euid == 0)
+#endif
+	{
+		current->flags |= PF_SUPERPRIV;
+		return 1;
+	}
+	return 0;
+}
+
+/*
+ * Routines for handling mm_structs
+ */
+extern struct mm_struct * mm_alloc(void);
+
+extern struct mm_struct * start_lazy_tlb(void);
+extern void end_lazy_tlb(struct mm_struct *mm);
+
+/* mmdrop drops the mm and the page tables */
+extern inline void FASTCALL(__mmdrop(struct mm_struct *));
+static inline void mmdrop(struct mm_struct * mm)
+{
+	if (atomic_dec_and_test(&mm->mm_count))
+		__mmdrop(mm);
+}
+
+/* mmput gets rid of the mappings and all user-space */
+extern void mmput(struct mm_struct *);
+/* Remove the current tasks stale references to the old mm_struct */
+extern void mm_release(void);
+
+/*
+ * Routines for handling the fd arrays
+ */
+extern struct file ** alloc_fd_array(int);
+extern int expand_fd_array(struct files_struct *, int nr);
+extern void free_fd_array(struct file **, int);
+
+extern fd_set *alloc_fdset(int);
+extern int expand_fdset(struct files_struct *, int nr);
+extern void free_fdset(fd_set *, int);
+
+extern int  copy_thread(int, unsigned long, unsigned long, unsigned long, struct task_struct *, struct pt_regs *);
+extern void flush_thread(void);
+extern void exit_thread(void);
+
+extern void exit_mm(struct task_struct *);
+extern void exit_files(struct task_struct *);
+extern void exit_sighand(struct task_struct *);
+
+extern void daemonize(void);
+
+extern int do_execve(char *, char **, char **, struct pt_regs *);
+extern int do_fork(unsigned long, unsigned long, struct pt_regs *, unsigned long);
+
+extern void FASTCALL(add_wait_queue(wait_queue_head_t *q, wait_queue_t * wait));
+extern void FASTCALL(add_wait_queue_exclusive(wait_queue_head_t *q, wait_queue_t * wait));
+extern void FASTCALL(remove_wait_queue(wait_queue_head_t *q, wait_queue_t * wait));
+
+#define __wait_event(wq, condition) 					\
+do {									\
+	wait_queue_t __wait;						\
+	init_waitqueue_entry(&__wait, current);				\
+									\
+	add_wait_queue(&wq, &__wait);					\
+	for (;;) {							\
+		set_current_state(TASK_UNINTERRUPTIBLE);		\
+		if (condition)						\
+			break;						\
+		schedule();						\
+	}								\
+	current->state = TASK_RUNNING;					\
+	remove_wait_queue(&wq, &__wait);				\
+} while (0)
+
+#define wait_event(wq, condition) 					\
+do {									\
+	if (condition)	 						\
+		break;							\
+	__wait_event(wq, condition);					\
+} while (0)
+
+#define __wait_event_interruptible(wq, condition, ret)			\
+do {									\
+	wait_queue_t __wait;						\
+	init_waitqueue_entry(&__wait, current);				\
+									\
+	add_wait_queue(&wq, &__wait);					\
+	for (;;) {							\
+		set_current_state(TASK_INTERRUPTIBLE);			\
+		if (condition)						\
+			break;						\
+		if (!signal_pending(current)) {				\
+			schedule();					\
+			continue;					\
+		}							\
+		ret = -ERESTARTSYS;					\
+		break;							\
+	}								\
+	current->state = TASK_RUNNING;					\
+	remove_wait_queue(&wq, &__wait);				\
+} while (0)
+	
+#define wait_event_interruptible(wq, condition)				\
+({									\
+	int __ret = 0;							\
+	if (!(condition))						\
+		__wait_event_interruptible(wq, condition, __ret);	\
+	__ret;								\
+})
+
+#define REMOVE_LINKS(p) do { \
+	(p)->next_task->prev_task = (p)->prev_task; \
+	(p)->prev_task->next_task = (p)->next_task; \
+	if ((p)->p_osptr) \
+		(p)->p_osptr->p_ysptr = (p)->p_ysptr; \
+	if ((p)->p_ysptr) \
+		(p)->p_ysptr->p_osptr = (p)->p_osptr; \
+	else \
+		(p)->p_pptr->p_cptr = (p)->p_osptr; \
+	} while (0)
+
+#define SET_LINKS(p) do { \
+	(p)->next_task = &init_task; \
+	(p)->prev_task = init_task.prev_task; \
+	init_task.prev_task->next_task = (p); \
+	init_task.prev_task = (p); \
+	(p)->p_ysptr = NULL; \
+	if (((p)->p_osptr = (p)->p_pptr->p_cptr) != NULL) \
+		(p)->p_osptr->p_ysptr = p; \
+	(p)->p_pptr->p_cptr = p; \
+	} while (0)
+
+#define for_each_task(p) \
+	for (p = &init_task ; (p = p->next_task) != &init_task ; )
+
+#define next_thread(p) \
+	list_entry((p)->thread_group.next, struct task_struct, thread_group)
+
+#ifdef CONFIG_MOSIX
+#define for_each_local_task(p) \
+	for (p = &init_task ; (p = p->next_task) != &init_task ; ) \
+	if(!(p->mosix.dflags & DREMOTE))
+
+static inline long
+LOGICAL_STATE(struct task_struct *p)
+{
+	int result;
+	unsigned long flags;
+
+	read_lock_irqsave(&p->mosix.state_lock, flags);
+	result = (p->mosix.bstate == TASK_SAME) ? p->state : p->mosix.bstate;
+	read_unlock_irqrestore(&p->mosix.state_lock, flags);
+	return(result);
+}
+
+extern void run_on(struct task_struct *);
+extern void run_off(struct task_struct *);
+
+#define	need_interim_while_asleep()	mosix_need_while_asleep()
+#define	run_interim_while_asleep()	mosix_run_while_asleep()
+#endif CONFIG_MOSIX
+
+static inline void del_from_runqueue(struct task_struct * p)
+{
+	nr_running--;
+	p->sleep_time = jiffies;
+#ifdef CONFIG_MOSIX
+	run_off(p);
+#endif CONFIG_MOSIX
+	list_del(&p->run_list);
+	p->run_list.next = NULL;
+}
+
+static inline int task_on_runqueue(struct task_struct *p)
+{
+	return (p->run_list.next != NULL);
+}
+
+static inline void unhash_process(struct task_struct *p)
+{
+	if (task_on_runqueue(p)) BUG();
+	write_lock_irq(&tasklist_lock);
+	nr_threads--;
+	unhash_pid(p);
+	REMOVE_LINKS(p);
+	list_del(&p->thread_group);
+	write_unlock_irq(&tasklist_lock);
+}
+
+/* Protects ->fs, ->files, ->mm, and synchronises with wait4().  Nests inside tasklist_lock */
+static inline void task_lock(struct task_struct *p)
+{
+	spin_lock(&p->alloc_lock);
+}
+
+static inline void task_unlock(struct task_struct *p)
+{
+	spin_unlock(&p->alloc_lock);
+}
+
+/* write full pathname into buffer and return start of pathname */
+static inline char * d_path(struct dentry *dentry, struct vfsmount *vfsmnt,
+				char *buf, int buflen)
+{
+	char *res;
+	struct vfsmount *rootmnt;
+	struct dentry *root;
+#if defined(CONFIG_MOSIX_DFSA) || defined(CONFIG_MOSIX_FS)
+	if(dentry->d_inode && dentry->d_inode->i_op &&
+		dentry->d_inode->i_op->check_path)
+		dentry->d_inode->i_op->check_path(dentry);
+#endif CONFIG_MOSIX_DFSA || CONFIG_MOSIX_FS
+	read_lock(&current->fs->lock);
+	rootmnt = mntget(current->fs->rootmnt);
+	root = dget(current->fs->root);
+	read_unlock(&current->fs->lock);
+	spin_lock(&dcache_lock);
+	res = __d_path(dentry, vfsmnt, root, rootmnt, buf, buflen);
+	spin_unlock(&dcache_lock);
+	dput(root);
+	mntput(rootmnt);
+	return res;
+}
+
+#endif /* __KERNEL__ */
+
+#endif
diff --git a/sys-kernel/linux-sources/files/digest-linux-sources-2.4.6 b/sys-kernel/linux-sources/files/digest-linux-sources-2.4.6
index 9e4d526ed6a1..383a6c88dc47 100644
--- a/sys-kernel/linux-sources/files/digest-linux-sources-2.4.6
+++ b/sys-kernel/linux-sources/files/digest-linux-sources-2.4.6
@@ -1,8 +1,6 @@
+MD5 53736319d63557eb7bdbd90fa7168744 MOSIX-1.0.5.tar.gz
 MD5 ff807499928379c4274a307855b9eeeb alsa-driver-0.5.11.tar.bz2
 MD5 88cabd12b0ed16152cb1981b466c053e ext3-2.4-0.9.1-246.gz
 MD5 3b04fb645ab68a081ab02079be937462 jfs-1.0.0-patch.tar.gz
 MD5 f0fce862f60daf4cb8d7c5b589d01158 linux-2.4.6.tar.bz2
-MD5 1ce6fb607f26dc20d4c77461057acb3c lvm_0.9.1_beta7.tar.gz
-MD5 5c1277d3e2a868b615a0ebdf6bf08789 ngpt-kernel-proc-1.0.0-1.diff
-MD5 12547f65f194697c838a7a21b2b3b535 ngpt-kernel-tid-1.0.0-1.diff
 MD5 f913c7246544b4a635e52734e99cba1f pcmcia-cs-3.1.27.tar.gz
diff --git a/sys-kernel/linux-sources/linux-sources-2.4.6.ebuild b/sys-kernel/linux-sources/linux-sources-2.4.6.ebuild
index 0c2b65426de5..7fa2f71e54d8 100644
--- a/sys-kernel/linux-sources/linux-sources-2.4.6.ebuild
+++ b/sys-kernel/linux-sources/linux-sources-2.4.6.ebuild
@@ -43,7 +43,8 @@ SRC_URI="http://www.kernel.org/pub/linux/kernel/v2.4/linux-${OKV}.tar.bz2
 	ftp://ftp.alsa-project.org/pub/driver/alsa-driver-${AV}.tar.bz2
 	http://prdownloads.sourceforge.net/pcmcia-cs/pcmcia-cs-${PCV}.tar.gz
 	http://www.zip.com.au/~akpm/ext3-2.4-0.9.1-246.gz
-	http://oss.software.ibm.com/developerworks/opensource/jfs/project/pub/jfs-1.0.0-patch.tar.gz"
+	http://oss.software.ibm.com/developerworks/opensource/jfs/project/pub/jfs-1.0.0-patch.tar.gz
+	ftp://ftp.cs.huji.ac.il/users/mosix/MOSIX-1.0.5.tar.gz"
 fi
 #	http://www.netroedge.com/~lm78/archive/lm_sensors-${SENV}.tar.gz
 #	http://www.netroedge.com/~lm78/archive/i2c-${SENV}.tar.gz
@@ -107,10 +108,25 @@ src_unpack() {
 #			cat ${DISTDIR}/patch-2.4.6-xfs-${x}.bz2 | bzip2 -d | patch -p1
 #		done		
 		
+		mkdir ${S}/extras
+
+		if [ "`use mosix`" ]
+		then
+			echo "Applying MOSIX patch..."
+			cd ${S}/extras
+			mkdir MOSIX-1.0.5
+			cd MOSIX-1.0.5
+			unpack MOSIX-1.0.5.tar.gz
+			tar -x --no-same-owner -vf user.tar
+			rm user.tar
+			cd ${S}
+			try cat extras/MOSIX-1.0.5/patches.2.4.6 | patch -p0
+			tar -x --no-same-owner -vf extras/MOSIX-1.0.5/kernel.new.2.4.6.tar
+		fi
+		
+		cd ${S}
 		echo "Applying reiserfs-NFS fix..."
 		try cat ${FILESDIR}/2.4.6/linux-2.4.6-reiserfs-NFS.patch | patch -N -p1
-    
-		mkdir ${S}/extras
 				
 		if [ "`use lvm`" ]
 		then
@@ -180,23 +196,37 @@ src_unpack() {
 		#	patch -p0 < ${FILESDIR}/${KV}/pcmcia-cs-${PCV}-gentoo.diff
 		fi
 		
-		if [ "`use jfs`" ]
-		then
-			echo "Applying JFS patch..."
-			cd ${WORKDIR}
-			unpack jfs-${JFSV}-patch.tar.gz
-			cd ${S}
-			patch -p1 < ${WORKDIR}/jfs-common-v1.0.0-patch
-			patch -p1 < ${WORKDIR}/jfs-2.4.5-v1.0.0-patch
-		fi
+		#JFS patch works; commented out because it's not ready for production use
+		#if [ "`use jfs`" ]
+		#then
+		#	echo "Applying JFS patch..."
+		#	cd ${WORKDIR}
+		#	unpack jfs-${JFSV}-patch.tar.gz
+		#	cd ${S}
+		#	patch -p1 < ${WORKDIR}/jfs-common-v1.0.0-patch
+		#	patch -p1 < ${WORKDIR}/jfs-2.4.5-v1.0.0-patch
+		#fi
 		
 		if [ "`use ext3`" ]
 		then
 			echo "Applying ext3 patch..."
+			if [ "`use mosix`" ]
+			then
+				echo
+				echo "There will be one reject; we will fix it. (no worries)"
+				echo
+			fi
 			cd ${S}
 			gzip -dc ${DISTDIR}/ext3-2.4-0.9.1-246.gz | patch -l -p1
+			if [ "`use mosix`" ]
+			then
+				echo 
+				echo "Fixing reject in include/linux/sched.h..."
+				echo
+				cp ${FILESDIR}/${KV}/sched.h include/linux
+			fi
 		fi
-		
+			
 		#get sources ready for compilation or for sitting at /usr/src/linux
 		echo "Preparing for compilation..."
 		cd ${S}
@@ -258,15 +288,16 @@ src_compile() {
 		
 		cd ${S}
 		
-		if [ "`use jfs`" ]
-		then
-			cd ${S}/fs/jfs/utils
-			try make
-			cd output
-			into /
-			dosbin *
-			doman `find -iname *.8`
-		fi
+#		Works, just commented out because JFS isn't ready to be used by non-developers
+#		if [ "`use jfs`" ]
+#		then
+#			cd ${S}/fs/jfs/utils
+#			try make
+#			cd output
+#			into /
+#			dosbin *
+#			doman `find -iname *.8`
+#		fi
 			
 		if [ "$PN" == "linux" ]
 		then