Merge branch 'linus' into cpus4096

Conflicts:

	drivers/acpi/processor_throttling.c

Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 0 insertions, 888 deletions

diff --git a/arch/mips/kernel/irixsig.c b/arch/mips/kernel/irixsig.c
deleted file mode 100644
index 0215c805a59..00000000000
--- a/arch/mips/kernel/irixsig.c
+++ /dev/null
@@ -1,888 +0,0 @@
-/*
- * irixsig.c: WHEEE, IRIX signals!  YOW, am I compatible or what?!?!
- *
- * Copyright (C) 1996 David S. Miller (dm@engr.sgi.com)
- * Copyright (C) 1997 - 2000 Ralf Baechle (ralf@gnu.org)
- * Copyright (C) 2000 Silicon Graphics, Inc.
- */
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/mm.h>
-#include <linux/errno.h>
-#include <linux/smp.h>
-#include <linux/time.h>
-#include <linux/ptrace.h>
-#include <linux/resource.h>
-
-#include <asm/ptrace.h>
-#include <asm/uaccess.h>
-#include <asm/unistd.h>
-
-#undef DEBUG_SIG
-
-#define _S(nr) (1<<((nr)-1))
-
-#define _BLOCKABLE (~(_S(SIGKILL) | _S(SIGSTOP)))
-
-#define _IRIX_NSIG		128
-#define _IRIX_NSIG_BPW		BITS_PER_LONG
-#define _IRIX_NSIG_WORDS	(_IRIX_NSIG / _IRIX_NSIG_BPW)
-
-typedef struct {
-	unsigned long sig[_IRIX_NSIG_WORDS];
-} irix_sigset_t;
-
-struct sigctx_irix5 {
-	u32 rmask, cp0_status;
-	u64 pc;
-	u64 regs[32];
-	u64 fpregs[32];
-	u32 usedfp, fpcsr, fpeir, sstk_flags;
-	u64 hi, lo;
-	u64 cp0_cause, cp0_badvaddr, _unused0;
-	irix_sigset_t sigset;
-	u64 weird_fpu_thing;
-	u64 _unused1[31];
-};
-
-#ifdef DEBUG_SIG
-/* Debugging */
-static inline void dump_irix5_sigctx(struct sigctx_irix5 *c)
-{
-	int i;
-
-	printk("misc: rmask[%08lx] status[%08lx] pc[%08lx]\n",
-	       (unsigned long) c->rmask,
-	       (unsigned long) c->cp0_status,
-	       (unsigned long) c->pc);
-	printk("regs: ");
-	for(i = 0; i < 16; i++)
-		printk("[%d]<%08lx> ", i, (unsigned long) c->regs[i]);
-	printk("\nregs: ");
-	for(i = 16; i < 32; i++)
-		printk("[%d]<%08lx> ", i, (unsigned long) c->regs[i]);
-	printk("\nfpregs: ");
-	for(i = 0; i < 16; i++)
-		printk("[%d]<%08lx> ", i, (unsigned long) c->fpregs[i]);
-	printk("\nfpregs: ");
-	for(i = 16; i < 32; i++)
-		printk("[%d]<%08lx> ", i, (unsigned long) c->fpregs[i]);
-	printk("misc: usedfp[%d] fpcsr[%08lx] fpeir[%08lx] stk_flgs[%08lx]\n",
-	       (int) c->usedfp, (unsigned long) c->fpcsr,
-	       (unsigned long) c->fpeir, (unsigned long) c->sstk_flags);
-	printk("misc: hi[%08lx] lo[%08lx] cause[%08lx] badvaddr[%08lx]\n",
-	       (unsigned long) c->hi, (unsigned long) c->lo,
-	       (unsigned long) c->cp0_cause, (unsigned long) c->cp0_badvaddr);
-	printk("misc: sigset<0>[%08lx] sigset<1>[%08lx] sigset<2>[%08lx] "
-	       "sigset<3>[%08lx]\n", (unsigned long) c->sigset.sig[0],
-	       (unsigned long) c->sigset.sig[1],
-	       (unsigned long) c->sigset.sig[2],
-	       (unsigned long) c->sigset.sig[3]);
-}
-#endif
-
-static int setup_irix_frame(struct k_sigaction *ka, struct pt_regs *regs,
-			    int signr, sigset_t *oldmask)
-{
-	struct sigctx_irix5 __user *ctx;
-	unsigned long sp;
-	int error, i;
-
-	sp = regs->regs[29];
-	sp -= sizeof(struct sigctx_irix5);
-	sp &= ~(0xf);
-	ctx = (struct sigctx_irix5 __user *) sp;
-	if (!access_ok(VERIFY_WRITE, ctx, sizeof(*ctx)))
-		goto segv_and_exit;
-
-	error = __put_user(0, &ctx->weird_fpu_thing);
-	error |= __put_user(~(0x00000001), &ctx->rmask);
-	error |= __put_user(0, &ctx->regs[0]);
-	for(i = 1; i < 32; i++)
-		error |= __put_user((u64) regs->regs[i], &ctx->regs[i]);
-
-	error |= __put_user((u64) regs->hi, &ctx->hi);
-	error |= __put_user((u64) regs->lo, &ctx->lo);
-	error |= __put_user((u64) regs->cp0_epc, &ctx->pc);
-	error |= __put_user(!!used_math(), &ctx->usedfp);
-	error |= __put_user((u64) regs->cp0_cause, &ctx->cp0_cause);
-	error |= __put_user((u64) regs->cp0_badvaddr, &ctx->cp0_badvaddr);
-
-	error |= __put_user(0, &ctx->sstk_flags); /* XXX sigstack unimp... todo... */
-
-	error |= __copy_to_user(&ctx->sigset, oldmask, sizeof(irix_sigset_t)) ? -EFAULT : 0;
-
-	if (error)
-		goto segv_and_exit;
-
-#ifdef DEBUG_SIG
-	dump_irix5_sigctx(ctx);
-#endif
-
-	regs->regs[4] = (unsigned long) signr;
-	regs->regs[5] = 0; /* XXX sigcode XXX */
-	regs->regs[6] = regs->regs[29] = sp;
-	regs->regs[7] = (unsigned long) ka->sa.sa_handler;
-	regs->regs[25] = regs->cp0_epc = (unsigned long) ka->sa_restorer;
-
-	return 1;
-
-segv_and_exit:
-	force_sigsegv(signr, current);
-	return 0;
-}
-
-static int inline
-setup_irix_rt_frame(struct k_sigaction * ka, struct pt_regs *regs,
-               int signr, sigset_t *oldmask, siginfo_t *info)
-{
-	printk("Aiee: setup_tr_frame wants to be written");
-	do_exit(SIGSEGV);
-}
-
-static inline int handle_signal(unsigned long sig, siginfo_t *info,
-	struct k_sigaction *ka, sigset_t *oldset, struct pt_regs * regs)
-{
-	int ret;
-
-	switch(regs->regs[0]) {
-	case ERESTARTNOHAND:
-		regs->regs[2] = EINTR;
-		break;
-	case ERESTARTSYS:
-		if(!(ka->sa.sa_flags & SA_RESTART)) {
-			regs->regs[2] = EINTR;
-			break;
-		}
-	/* fallthrough */
-	case ERESTARTNOINTR:		/* Userland will reload $v0.  */
-		regs->cp0_epc -= 8;
-	}
-
-	regs->regs[0] = 0;		/* Don't deal with this again.  */
-
-	if (ka->sa.sa_flags & SA_SIGINFO)
-		ret = setup_irix_rt_frame(ka, regs, sig, oldset, info);
-	else
-		ret = setup_irix_frame(ka, regs, sig, oldset);
-
-	spin_lock_irq(&current->sighand->siglock);
-	sigorsets(&current->blocked, &current->blocked, &ka->sa.sa_mask);
-	if (!(ka->sa.sa_flags & SA_NODEFER))
-		sigaddset(&current->blocked, sig);
-	recalc_sigpending();
-	spin_unlock_irq(&current->sighand->siglock);
-
-	return ret;
-}
-
-void do_irix_signal(struct pt_regs *regs)
-{
-	struct k_sigaction ka;
-	siginfo_t info;
-	int signr;
-	sigset_t *oldset;
-
-	/*
-	 * We want the common case to go fast, which is why we may in certain
-	 * cases get here from kernel mode. Just return without doing anything
-	 * if so.
-	 */
-	if (!user_mode(regs))
-		return;
-
-	if (test_thread_flag(TIF_RESTORE_SIGMASK))
-		oldset = &current->saved_sigmask;
-	else
-		oldset = &current->blocked;
-
-	signr = get_signal_to_deliver(&info, &ka, regs, NULL);
-	if (signr > 0) {
-		/* Whee!  Actually deliver the signal.  */
-		if (handle_signal(signr, &info, &ka, oldset, regs) == 0) {
-			/* a signal was successfully delivered; the saved
-			 * sigmask will have been stored in the signal frame,
-			 * and will be restored by sigreturn, so we can simply
-			 * clear the TIF_RESTORE_SIGMASK flag */
-			if (test_thread_flag(TIF_RESTORE_SIGMASK))
-				clear_thread_flag(TIF_RESTORE_SIGMASK);
-		}
-
-		return;
-	}
-
-	/*
-	 * Who's code doesn't conform to the restartable syscall convention
-	 * dies here!!!  The li instruction, a single machine instruction,
-	 * must directly be followed by the syscall instruction.
-	 */
-	if (regs->regs[0]) {
-		if (regs->regs[2] == ERESTARTNOHAND ||
-		    regs->regs[2] == ERESTARTSYS ||
-		    regs->regs[2] == ERESTARTNOINTR) {
-			regs->cp0_epc -= 8;
-		}
-		if (regs->regs[2] == ERESTART_RESTARTBLOCK) {
-			regs->regs[2] = __NR_restart_syscall;
-			regs->regs[7] = regs->regs[26];
-			regs->cp0_epc -= 4;
-		}
-		regs->regs[0] = 0;	/* Don't deal with this again.  */
-	}
-
-	/*
-	* If there's no signal to deliver, we just put the saved sigmask
-	* back
-	*/
-	if (test_thread_flag(TIF_RESTORE_SIGMASK)) {
-		clear_thread_flag(TIF_RESTORE_SIGMASK);
-		sigprocmask(SIG_SETMASK, &current->saved_sigmask, NULL);
-	}
-}
-
-asmlinkage void
-irix_sigreturn(struct pt_regs *regs)
-{
-	struct sigctx_irix5 __user *context, *magic;
-	unsigned long umask, mask;
-	u64 *fregs;
-	u32 usedfp;
-	int error, sig, i, base = 0;
-	sigset_t blocked;
-
-	/* Always make any pending restarted system calls return -EINTR */
-	current_thread_info()->restart_block.fn = do_no_restart_syscall;
-
-	if (regs->regs[2] == 1000)
-		base = 1;
-
-	context = (struct sigctx_irix5 __user *) regs->regs[base + 4];
-	magic = (struct sigctx_irix5 __user *) regs->regs[base + 5];
-	sig = (int) regs->regs[base + 6];
-#ifdef DEBUG_SIG
-	printk("[%s:%d] IRIX sigreturn(scp[%p],ucp[%p],sig[%d])\n",
-	       current->comm, current->pid, context, magic, sig);
-#endif
-	if (!context)
-		context = magic;
-	if (!access_ok(VERIFY_READ, context, sizeof(struct sigctx_irix5)))
-		goto badframe;
-
-#ifdef DEBUG_SIG
-	dump_irix5_sigctx(context);
-#endif
-
-	error = __get_user(regs->cp0_epc, &context->pc);
-	error |= __get_user(umask, &context->rmask);
-
-	mask = 2;
-	for (i = 1; i < 32; i++, mask <<= 1) {
-		if (umask & mask)
-			error |= __get_user(regs->regs[i], &context->regs[i]);
-	}
-	error |= __get_user(regs->hi, &context->hi);
-	error |= __get_user(regs->lo, &context->lo);
-
-	error |= __get_user(usedfp, &context->usedfp);
-	if ((umask & 1) && usedfp) {
-		fregs = (u64 *) &current->thread.fpu;
-
-		for(i = 0; i < 32; i++)
-			error |= __get_user(fregs[i], &context->fpregs[i]);
-		error |= __get_user(current->thread.fpu.fcr31, &context->fpcsr);
-	}
-
-	/* XXX do sigstack crapola here... XXX */
-
-	error |= __copy_from_user(&blocked, &context->sigset, sizeof(blocked)) ? -EFAULT : 0;
-
-	if (error)
-		goto badframe;
-
-	sigdelsetmask(&blocked, ~_BLOCKABLE);
-	spin_lock_irq(&current->sighand->siglock);
-	current->blocked = blocked;
-	recalc_sigpending();
-	spin_unlock_irq(&current->sighand->siglock);
-
-	/*
-	 * Don't let your children do this ...
-	 */
-	__asm__ __volatile__(
-		"move\t$29,%0\n\t"
-		"j\tsyscall_exit"
-		:/* no outputs */
-		:"r" (&regs));
-		/* Unreached */
-
-badframe:
-	force_sig(SIGSEGV, current);
-}
-
-struct sigact_irix5 {
-	int flags;
-	void (*handler)(int);
-	u32 sigset[4];
-	int _unused0[2];
-};
-
-#define SIG_SETMASK32	256	/* Goodie from SGI for BSD compatibility:
-				   set only the low 32 bit of the sigset.  */
-
-#ifdef DEBUG_SIG
-static inline void dump_sigact_irix5(struct sigact_irix5 *p)
-{
-	printk("<f[%d] hndlr[%08lx] msk[%08lx]>", p->flags,
-	       (unsigned long) p->handler,
-	       (unsigned long) p->sigset[0]);
-}
-#endif
-
-asmlinkage int
-irix_sigaction(int sig, const struct sigaction __user *act,
-	      struct sigaction __user *oact, void __user *trampoline)
-{
-	struct k_sigaction new_ka, old_ka;
-	int ret;
-
-#ifdef DEBUG_SIG
-	printk(" (%d,%s,%s,%08lx) ", sig, (!new ? "0" : "NEW"),
-	       (!old ? "0" : "OLD"), trampoline);
-	if(new) {
-		dump_sigact_irix5(new); printk(" ");
-	}
-#endif
-	if (act) {
-		sigset_t mask;
-		int err;
-
-		if (!access_ok(VERIFY_READ, act, sizeof(*act)))
-			return -EFAULT;
-		err = __get_user(new_ka.sa.sa_handler, &act->sa_handler);
-		err |= __get_user(new_ka.sa.sa_flags, &act->sa_flags);
-
-		err |= __copy_from_user(&mask, &act->sa_mask, sizeof(sigset_t)) ? -EFAULT : 0;
-		if (err)
-			return err;
-
-		/*
-		 * Hmmm... methinks IRIX libc always passes a valid trampoline
-		 * value for all invocations of sigaction.  Will have to
-		 * investigate.  POSIX POSIX, die die die...
-		 */
-		new_ka.sa_restorer = trampoline;
-	}
-
-/* XXX Implement SIG_SETMASK32 for IRIX compatibility */
-	ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
-
-	if (!ret && oact) {
-		int err;
-
-		if (!access_ok(VERIFY_WRITE, oact, sizeof(*oact)))
-			return -EFAULT;
-
-		err = __put_user(old_ka.sa.sa_handler, &oact->sa_handler);
-		err |= __put_user(old_ka.sa.sa_flags, &oact->sa_flags);
-		err |= __copy_to_user(&oact->sa_mask, &old_ka.sa.sa_mask,
-		               sizeof(sigset_t)) ? -EFAULT : 0;
-		if (err)
-			return -EFAULT;
-	}
-
-	return ret;
-}
-
-asmlinkage int irix_sigpending(irix_sigset_t __user *set)
-{
-	return do_sigpending(set, sizeof(*set));
-}
-
-asmlinkage int irix_sigprocmask(int how, irix_sigset_t __user *new,
-	irix_sigset_t __user *old)
-{
-	sigset_t oldbits, newbits;
-
-	if (new) {
-		if (!access_ok(VERIFY_READ, new, sizeof(*new)))
-			return -EFAULT;
-		if (__copy_from_user(&newbits, new, sizeof(unsigned long)*4))
-			return -EFAULT;
-		sigdelsetmask(&newbits, ~_BLOCKABLE);
-
-		spin_lock_irq(&current->sighand->siglock);
-		oldbits = current->blocked;
-
-		switch(how) {
-		case 1:
-			sigorsets(&newbits, &oldbits, &newbits);
-			break;
-
-		case 2:
-			sigandsets(&newbits, &oldbits, &newbits);
-			break;
-
-		case 3:
-			break;
-
-		case 256:
-			siginitset(&newbits, newbits.sig[0]);
-			break;
-
-		default:
-			spin_unlock_irq(&current->sighand->siglock);
-			return -EINVAL;
-		}
-		recalc_sigpending();
-		spin_unlock_irq(&current->sighand->siglock);
-	}
-	if (old)
-		return copy_to_user(old, &current->blocked,
-		                  sizeof(unsigned long)*4) ? -EFAULT : 0;
-
-	return 0;
-}
-
-asmlinkage int irix_sigsuspend(struct pt_regs *regs)
-{
-	sigset_t newset;
-	sigset_t __user *uset;
-
-	uset = (sigset_t __user *) regs->regs[4];
-	if (copy_from_user(&newset, uset, sizeof(sigset_t)))
-		return -EFAULT;
-	sigdelsetmask(&newset, ~_BLOCKABLE);
-
-	spin_lock_irq(&current->sighand->siglock);
-	current->saved_sigmask = current->blocked;
-	current->blocked = newset;
-	recalc_sigpending();
-	spin_unlock_irq(&current->sighand->siglock);
-
-	current->state = TASK_INTERRUPTIBLE;
-	schedule();
-	set_thread_flag(TIF_RESTORE_SIGMASK);
-	return -ERESTARTNOHAND;
-}
-
-/* hate hate hate... */
-struct irix5_siginfo {
-	int sig, code, error;
-	union {
-		char unused[128 - (3 * 4)]; /* Safety net. */
-		struct {
-			int pid;
-			union {
-				int uid;
-				struct {
-					int utime, status, stime;
-				} child;
-			} procdata;
-		} procinfo;
-
-		unsigned long fault_addr;
-
-		struct {
-			int fd;
-			long band;
-		} fileinfo;
-
-		unsigned long sigval;
-	} stuff;
-};
-
-asmlinkage int irix_sigpoll_sys(unsigned long __user *set,
-	struct irix5_siginfo __user *info, struct timespec __user *tp)
-{
-	long expire = MAX_SCHEDULE_TIMEOUT;
-	sigset_t kset;
-	int i, sig, error, timeo = 0;
-	struct timespec ktp;
-
-#ifdef DEBUG_SIG
-	printk("[%s:%d] irix_sigpoll_sys(%p,%p,%p)\n",
-	       current->comm, current->pid, set, info, tp);
-#endif
-
-	/* Must always specify the signal set. */
-	if (!set)
-		return -EINVAL;
-
-	if (copy_from_user(&kset, set, sizeof(set)))
-		return -EFAULT;
-
-	if (info && clear_user(info, sizeof(*info))) {
-		error = -EFAULT;
-		goto out;
-	}
-
-	if (tp) {
-		if (copy_from_user(&ktp, tp, sizeof(*tp)))
-			return -EFAULT;
-
-		if (!ktp.tv_sec && !ktp.tv_nsec)
-			return -EINVAL;
-
-		expire = timespec_to_jiffies(&ktp) +
-		         (ktp.tv_sec || ktp.tv_nsec);
-	}
-
-	while(1) {
-		long tmp = 0;
-
-		expire = schedule_timeout_interruptible(expire);
-
-		for (i=0; i < _IRIX_NSIG_WORDS; i++)
-			tmp |= (current->pending.signal.sig[i] & kset.sig[i]);
-
-		if (tmp)
-			break;
-		if (!expire) {
-			timeo = 1;
-			break;
-		}
-		if (signal_pending(current))
-			return -EINTR;
-	}
-	if (timeo)
-		return -EAGAIN;
-
-	for (sig = 1; i <= 65 /* IRIX_NSIG */; sig++) {
-		if (sigismember (&kset, sig))
-			continue;
-		if (sigismember (&current->pending.signal, sig)) {
-			/* XXX need more than this... */
-			if (info)
-				return copy_to_user(&info->sig, &sig, sizeof(sig));
-			return 0;
-		}
-	}
-
-	/* Should not get here, but do something sane if we do. */
-	error = -EINTR;
-
-out:
-	return error;
-}
-
-/* This is here because of irix5_siginfo definition. */
-#define IRIX_P_PID    0
-#define IRIX_P_PGID   2
-#define IRIX_P_ALL    7
-
-#define W_EXITED     1
-#define W_TRAPPED    2
-#define W_STOPPED    4
-#define W_CONT       8
-#define W_NOHANG    64
-
-#define W_MASK      (W_EXITED | W_TRAPPED | W_STOPPED | W_CONT | W_NOHANG)
-
-asmlinkage int irix_waitsys(int type, int upid,
-	struct irix5_siginfo __user *info, int options,
-	struct rusage __user *ru)
-{
-	struct pid *pid = NULL;
-	int flag, retval;
-	DECLARE_WAITQUEUE(wait, current);
-	struct task_struct *tsk;
-	struct task_struct *p;
-	struct list_head *_p;
-
-	if (!info)
-		return -EINVAL;
-
-	if (!access_ok(VERIFY_WRITE, info, sizeof(*info)))
-		return -EFAULT;
-
-	if (ru)
-		if (!access_ok(VERIFY_WRITE, ru, sizeof(*ru)))
-			return -EFAULT;
-
-	if (options & ~W_MASK)
-		return -EINVAL;
-
-	if (type != IRIX_P_PID && type != IRIX_P_PGID && type != IRIX_P_ALL)
-		return -EINVAL;
-
-	if (type != IRIX_P_ALL)
-		pid = find_get_pid(upid);
-	add_wait_queue(&current->signal->wait_chldexit, &wait);
-repeat:
-	flag = 0;
-	current->state = TASK_INTERRUPTIBLE;
-	read_lock(&tasklist_lock);
-	tsk = current;
-	list_for_each(_p, &tsk->children) {
-		p = list_entry(_p, struct task_struct, sibling);
-		if ((type == IRIX_P_PID) && task_pid(p) != pid)
-			continue;
-		if ((type == IRIX_P_PGID) && task_pgrp(p) != pid)
-			continue;
-		if ((p->exit_signal != SIGCHLD))
-			continue;
-		flag = 1;
-		switch (p->state) {
-		case TASK_STOPPED:
-			if (!p->exit_code)
-				continue;
-			if (!(options & (W_TRAPPED|W_STOPPED)) &&
-			    !(p->ptrace & PT_PTRACED))
-				continue;
-			read_unlock(&tasklist_lock);
-
-			/* move to end of parent's list to avoid starvation */
-			write_lock_irq(&tasklist_lock);
-			remove_parent(p);
-			add_parent(p);
-			write_unlock_irq(&tasklist_lock);
-			retval = ru ? getrusage(p, RUSAGE_BOTH, ru) : 0;
-			if (retval)
-				goto end_waitsys;
-
-			retval = __put_user(SIGCHLD, &info->sig);
-			retval |= __put_user(0, &info->code);
-			retval |= __put_user(task_pid_vnr(p), &info->stuff.procinfo.pid);
-			retval |= __put_user((p->exit_code >> 8) & 0xff,
-			           &info->stuff.procinfo.procdata.child.status);
-			retval |= __put_user(p->utime, &info->stuff.procinfo.procdata.child.utime);
-			retval |= __put_user(p->stime, &info->stuff.procinfo.procdata.child.stime);
-			if (retval)
-				goto end_waitsys;
-
-			p->exit_code = 0;
-			goto end_waitsys;
-
-		case EXIT_ZOMBIE:
-			current->signal->cutime += p->utime + p->signal->cutime;
-			current->signal->cstime += p->stime + p->signal->cstime;
-			if (ru != NULL)
-				getrusage(p, RUSAGE_BOTH, ru);
-			retval = __put_user(SIGCHLD, &info->sig);
-			retval |= __put_user(1, &info->code);      /* CLD_EXITED */
-			retval |= __put_user(task_pid_vnr(p), &info->stuff.procinfo.pid);
-			retval |= __put_user((p->exit_code >> 8) & 0xff,
-			           &info->stuff.procinfo.procdata.child.status);
-			retval |= __put_user(p->utime,
-			           &info->stuff.procinfo.procdata.child.utime);
-			retval |= __put_user(p->stime,
-			           &info->stuff.procinfo.procdata.child.stime);
-			if (retval)
-				goto end_waitsys;
-
-			if (p->real_parent != p->parent) {
-				write_lock_irq(&tasklist_lock);
-				remove_parent(p);
-				p->parent = p->real_parent;
-				add_parent(p);
-				do_notify_parent(p, SIGCHLD);
-				write_unlock_irq(&tasklist_lock);
-			} else
-				release_task(p);
-			goto end_waitsys;
-		default:
-			continue;
-		}
-		tsk = next_thread(tsk);
-	}
-	read_unlock(&tasklist_lock);
-	if (flag) {
-		retval = 0;
-		if (options & W_NOHANG)
-			goto end_waitsys;
-		retval = -ERESTARTSYS;
-		if (signal_pending(current))
-			goto end_waitsys;
-		current->state = TASK_INTERRUPTIBLE;
-		schedule();
-		goto repeat;
-	}
-	retval = -ECHILD;
-end_waitsys:
-	current->state = TASK_RUNNING;
-	remove_wait_queue(&current->signal->wait_chldexit, &wait);
-	put_pid(pid);
-
-	return retval;
-}
-
-struct irix5_context {
-	u32 flags;
-	u32 link;
-	u32 sigmask[4];
-	struct { u32 sp, size, flags; } stack;
-	int regs[36];
-	u32 fpregs[32];
-	u32 fpcsr;
-	u32 _unused0;
-	u32 _unused1[47];
-	u32 weird_graphics_thing;
-};
-
-asmlinkage int irix_getcontext(struct pt_regs *regs)
-{
-	int error, i, base = 0;
-	struct irix5_context __user *ctx;
-	unsigned long flags;
-
-	if (regs->regs[2] == 1000)
-		base = 1;
-	ctx = (struct irix5_context __user *) regs->regs[base + 4];
-
-#ifdef DEBUG_SIG
-	printk("[%s:%d] irix_getcontext(%p)\n",
-	       current->comm, current->pid, ctx);
-#endif
-
-	if (!access_ok(VERIFY_WRITE, ctx, sizeof(*ctx)))
-		return -EFAULT;
-
-	error = __put_user(current->thread.irix_oldctx, &ctx->link);
-
-	error |= __copy_to_user(&ctx->sigmask, &current->blocked, sizeof(irix_sigset_t)) ? -EFAULT : 0;
-
-	/* XXX Do sigstack stuff someday... */
-	error |= __put_user(0, &ctx->stack.sp);
-	error |= __put_user(0, &ctx->stack.size);
-	error |= __put_user(0, &ctx->stack.flags);
-
-	error |= __put_user(0, &ctx->weird_graphics_thing);
-	error |= __put_user(0, &ctx->regs[0]);
-	for (i = 1; i < 32; i++)
-		error |= __put_user(regs->regs[i], &ctx->regs[i]);
-	error |= __put_user(regs->lo, &ctx->regs[32]);
-	error |= __put_user(regs->hi, &ctx->regs[33]);
-	error |= __put_user(regs->cp0_cause, &ctx->regs[34]);
-	error |= __put_user(regs->cp0_epc, &ctx->regs[35]);
-
-	flags = 0x0f;
-	if (!used_math()) {
-		flags &= ~(0x08);
-	} else {
-		/* XXX wheee... */
-		printk("Wheee, no code for saving IRIX FPU context yet.\n");
-	}
-	error |= __put_user(flags, &ctx->flags);
-
-	return error;
-}
-
-asmlinkage void irix_setcontext(struct pt_regs *regs)
-{
-	struct irix5_context __user *ctx;
-	int err, base = 0;
-	u32 flags;
-
-	if (regs->regs[2] == 1000)
-		base = 1;
-	ctx = (struct irix5_context __user *) regs->regs[base + 4];
-
-#ifdef DEBUG_SIG
-	printk("[%s:%d] irix_setcontext(%p)\n",
-	       current->comm, current->pid, ctx);
-#endif
-
-	if (!access_ok(VERIFY_READ, ctx, sizeof(*ctx)))
-		goto segv_and_exit;
-
-	err = __get_user(flags, &ctx->flags);
-	if (flags & 0x02) {
-		/* XXX sigstack garbage, todo... */
-		printk("Wheee, cannot do sigstack stuff in setcontext\n");
-	}
-
-	if (flags & 0x04) {
-		int i;
-
-		/* XXX extra control block stuff... todo... */
-		for (i = 1; i < 32; i++)
-			err |= __get_user(regs->regs[i], &ctx->regs[i]);
-		err |= __get_user(regs->lo, &ctx->regs[32]);
-		err |= __get_user(regs->hi, &ctx->regs[33]);
-		err |= __get_user(regs->cp0_epc, &ctx->regs[35]);
-	}
-
-	if (flags & 0x08)
-		/* XXX fpu context, blah... */
-		printk(KERN_ERR "Wheee, cannot restore FPU context yet...\n");
-
-	err |= __get_user(current->thread.irix_oldctx, &ctx->link);
-	if (err)
-		goto segv_and_exit;
-
-	/*
-	 * Don't let your children do this ...
-	 */
-	__asm__ __volatile__(
-		"move\t$29,%0\n\t"
-		"j\tsyscall_exit"
-		:/* no outputs */
-		:"r" (&regs));
-		/* Unreached */
-
-segv_and_exit:
-	force_sigsegv(SIGSEGV, current);
-}
-
-struct irix_sigstack {
-	unsigned long sp;
-	int status;
-};
-
-asmlinkage int irix_sigstack(struct irix_sigstack __user *new,
-	struct irix_sigstack __user *old)
-{
-#ifdef DEBUG_SIG
-	printk("[%s:%d] irix_sigstack(%p,%p)\n",
-	       current->comm, current->pid, new, old);
-#endif
-	if (new) {
-		if (!access_ok(VERIFY_READ, new, sizeof(*new)))
-			return -EFAULT;
-	}
-
-	if (old) {
-		if (!access_ok(VERIFY_WRITE, old, sizeof(*old)))
-			return -EFAULT;
-	}
-
-	return 0;
-}
-
-struct irix_sigaltstack { unsigned long sp; int size; int status; };
-
-asmlinkage int irix_sigaltstack(struct irix_sigaltstack __user *new,
-				struct irix_sigaltstack __user *old)
-{
-#ifdef DEBUG_SIG
-	printk("[%s:%d] irix_sigaltstack(%p,%p)\n",
-	       current->comm, current->pid, new, old);
-#endif
-	if (new)
-		if (!access_ok(VERIFY_READ, new, sizeof(*new)))
-			return -EFAULT;
-
-	if (old) {
-		if (!access_ok(VERIFY_WRITE, old, sizeof(*old)))
-			return -EFAULT;
-	}
-
-	return 0;
-}
-
-struct irix_procset {
-	int cmd, ltype, lid, rtype, rid;
-};
-
-asmlinkage int irix_sigsendset(struct irix_procset __user *pset, int sig)
-{
-	if (!access_ok(VERIFY_READ, pset, sizeof(*pset)))
-		return -EFAULT;
-#ifdef DEBUG_SIG
-	printk("[%s:%d] irix_sigsendset([%d,%d,%d,%d,%d],%d)\n",
-	       current->comm, current->pid,
-	       pset->cmd, pset->ltype, pset->lid, pset->rtype, pset->rid,
-	       sig);
-#endif
-	return -EINVAL;
-}