[PATCH 2.5.3] Second version of signal changes for thread groups

From: Dave McCracken (dmccr@us.ibm.com)
Date: Wed Feb 06 2002 - 12:02:20 EST

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--On Tuesday, February 05, 2002 17:26:22 -0800 Linus Torvalds
<torvalds@transmeta.com> wrote:

> Your mailer does horrible things to whitespace (word wrap etc). Please fix
> it, the patch itself looks ok.

My apologies. It's not my mailer that was broken, it was my brain. I
accidentally set a config option wrong.

> Oh, btw - another thing:
> when you re-send with a non-broken mailer, could you please also change
> all the duplication of the
> (... code...)
> and not have the same logic duplicated N times.

Done. Here's the corrected patch.

Dave McCracken

======================================================================
Dave McCracken IBM Linux Base Kernel Team 1-512-838-3059
dmccr@us.ibm.com T/L 678-3059

-------------------

--- linux-2.5.3/./kernel/fork.c Mon Jan 28 17:11:45 2002
+++ linux-2.5.3-ngpt/./kernel/fork.c Fri Feb 1 14:08:52 2002
@@ -724,10 +724,10 @@
/* Need tasklist lock for parent etc handling! */
write_lock_irq(&tasklist_lock);

- /* CLONE_PARENT and CLONE_THREAD re-use the old parent */
+ /* CLONE_PARENT re-uses the old parent */
         p->p_opptr = current->p_opptr;
         p->p_pptr = current->p_pptr;
- if (!(clone_flags & (CLONE_PARENT | CLONE_THREAD))) {
+ if (!(clone_flags & CLONE_PARENT)) {
                 p->p_opptr = current;
                 if (!(p->ptrace & PT_PTRACED))
                         p->p_pptr = current;
--- linux-2.5.3/./kernel/signal.c Mon Jan 28 17:11:45 2002
+++ linux-2.5.3-ngpt/./kernel/signal.c Wed Feb 6 09:44:33 2002
@@ -142,6 +142,35 @@
         }
}

+/*
+ * sig_exit - cause the current task to exit due to a signal.
+ */
+
+void
+sig_exit(int sig, int exit_code, struct siginfo *info)
+{
+ struct task_struct *t;
+
+ sigaddset(&current->pending.signal, sig);
+ recalc_sigpending(current);
+ current->flags |= PF_SIGNALED;
+
+ /* Propagate the signal to all the tasks in
+ * our thread group
+ */
+ if (info && (unsigned long)info != 1
+ && info->si_code != SI_TKILL) {
+ read_lock(&tasklist_lock);
+ for_each_thread(t) {
+ force_sig_info(sig, info, t);
+ }
+ read_unlock(&tasklist_lock);
+ }
+
+ do_exit(exit_code);
+ /* NOTREACHED */
+}
+
/* Notify the system that a driver wants to block all signals for this
  * process, and wants to be notified if any signals at all were to be
  * sent/acted upon. If the notifier routine returns non-zero, then the
@@ -589,7 +618,7 @@
                 retval = -ESRCH;
                 read_lock(&tasklist_lock);
                 for_each_task(p) {
- if (p->pgrp == pgrp) {
+ if (p->pgrp == pgrp && thread_group_leader(p)) {
                                 int err = send_sig_info(sig, info, p);
                                 if (retval)
                                         retval = err;
@@ -636,8 +665,15 @@
         read_lock(&tasklist_lock);
         p = find_task_by_pid(pid);
         error = -ESRCH;
- if (p)
+ if (p) {
+ if (!thread_group_leader(p)) {
+ struct task_struct *tg;
+ tg = find_task_by_pid(p->tgid);
+ if (tg)
+ p = tg;
+ }
                 error = send_sig_info(sig, info, p);
+ }
         read_unlock(&tasklist_lock);
         return error;
}
@@ -660,7 +696,7 @@

                 read_lock(&tasklist_lock);
                 for_each_task(p) {
- if (p->pid > 1 && p != current) {
+ if (p->pid > 1 && p != current && thread_group_leader(p)) {
                                 int err = send_sig_info(sig, info, p);
                                 ++count;
                                 if (err != -EPERM)
@@ -983,6 +1019,36 @@
         info.si_uid = current->uid;

return kill_something_info(sig, &info, pid);
+}
+
+/*
+ * Kill only one task, even if it's a CLONE_THREAD task.
+ */
+asmlinkage long
+sys_tkill(int pid, int sig)
+{
+ struct siginfo info;
+ int error;
+ struct task_struct *p;
+
+ /* This is only valid for single tasks */
+ if (pid <= 0)
+ return -EINVAL;
+
+ info.si_signo = sig;
+ info.si_errno = 0;
+ info.si_code = SI_TKILL;
+ info.si_pid = current->pid;
+ info.si_uid = current->uid;
+
+ read_lock(&tasklist_lock);
+ p = find_task_by_pid(pid);
+ error = -ESRCH;
+ if (p) {
+ error = send_sig_info(sig, &info, p);
+ }
+ read_unlock(&tasklist_lock);
+ return error;
}

asmlinkage long
--- linux-2.5.3/./include/linux/sched.h Tue Jan 29 23:41:12 2002
+++ linux-2.5.3-ngpt/./include/linux/sched.h Wed Feb 6 09:48:57 2002
@@ -564,6 +564,7 @@
extern void proc_caches_init(void);
extern void flush_signals(struct task_struct *);
extern void flush_signal_handlers(struct task_struct *);
+extern void sig_exit(int, int, struct siginfo *);
extern int dequeue_signal(sigset_t *, siginfo_t *);
extern void block_all_signals(int (*notifier)(void *priv), void *priv,
sigset_t *mask);
@@ -839,8 +840,13 @@
#define for_each_task(p) \
for (p = &init_task ; (p = p->next_task) != &init_task ; )

+#define for_each_thread(task) \
+ for (task = next_thread(current) ; task != current ; task =
next_thread(task))
+
#define next_thread(p) \
list_entry((p)->thread_group.next, struct task_struct, thread_group)
+
+#define thread_group_leader(p) (p->pid == p->tgid)

static inline void unhash_process(struct task_struct *p)
{
--- linux-2.5.3/./include/asm-i386/unistd.h Tue Jan 29 20:46:00 2002
+++ linux-2.5.3-ngpt/./include/asm-i386/unistd.h Fri Feb 1 13:15:08 2002
@@ -242,6 +242,7 @@
#define __NR_removexattr 235
#define __NR_lremovexattr 236
#define __NR_fremovexattr 237
+#define __NR_tkill 238

/* user-visible error numbers are in the range -1 - -124: see
<asm-i386/errno.h> */

--- linux-2.5.3/./include/asm-i386/siginfo.h Tue Jan 29 23:41:10 2002
+++ linux-2.5.3-ngpt/./include/asm-i386/siginfo.h Fri Feb 1 14:07:04 2002
@@ -107,6 +107,7 @@
#define SI_MESGQ -3 /* sent by real time mesq state change */
#define SI_ASYNCIO -4 /* sent by AIO completion */
#define SI_SIGIO -5 /* sent by queued SIGIO */
+#define SI_TKILL -6 /* sent by tkill system call */

#define SI_FROMUSER(siptr) ((siptr)->si_code <= 0)
#define SI_FROMKERNEL(siptr) ((siptr)->si_code > 0)
--- linux-2.5.3/./include/asm-mips/unistd.h Mon Jul 2 15:56:40 2001
+++ linux-2.5.3-ngpt/./include/asm-mips/unistd.h Fri Feb 1 13:12:28 2002
@@ -233,6 +233,8 @@
#define __NR_madvise (__NR_Linux + 218)
#define __NR_getdents64 (__NR_Linux + 219)
#define __NR_fcntl64 (__NR_Linux + 220)
+#define __NR_gettid (__NR_Linux + 221)
+#define __NR_tkill (__NR_Linux + 222)

/*
* Offset of the last Linux flavoured syscall
--- linux-2.5.3/./include/asm-mips/siginfo.h Wed May 24 20:38:26 2000
+++ linux-2.5.3-ngpt/./include/asm-mips/siginfo.h Fri Feb 1 13:12:28 2002
@@ -127,6 +127,7 @@
#define SI_TIMER __SI_CODE(__SI_TIMER,-3) /* sent by timer expiration */
#define SI_MESGQ -4 /* sent by real time mesq state change */
#define SI_SIGIO -5 /* sent by queued SIGIO */
+#define SI_TKILL -6 /* sent by tkill system call */

#define SI_FROMUSER(siptr) ((siptr)->si_code <= 0)
#define SI_FROMKERNEL(siptr) ((siptr)->si_code > 0)
--- linux-2.5.3/./include/asm-alpha/unistd.h Fri Nov 9 15:45:35 2001
+++ linux-2.5.3-ngpt/./include/asm-alpha/unistd.h Fri Feb 1 13:12:28 2002
@@ -318,6 +318,7 @@
#define __NR_gettid 378
#define __NR_readahead 379
#define __NR_security 380 /* syscall for security modules */
+#define __NR_tkill 381

#if defined(__GNUC__)

--- linux-2.5.3/./include/asm-alpha/siginfo.h Wed May 24 20:38:26 2000
+++ linux-2.5.3-ngpt/./include/asm-alpha/siginfo.h Fri Feb 1 13:12:28 2002
@@ -107,6 +107,7 @@
#define SI_MESGQ -3 /* sent by real time mesq state change */
#define SI_ASYNCIO -4 /* sent by AIO completion */
#define SI_SIGIO -5 /* sent by queued SIGIO */
+#define SI_TKILL -6 /* sent by tkill system call */

#define SI_FROMUSER(siptr) ((siptr)->si_code <= 0)
#define SI_FROMKERNEL(siptr) ((siptr)->si_code > 0)
--- linux-2.5.3/./include/asm-m68k/unistd.h Thu Oct 25 15:53:55 2001
+++ linux-2.5.3-ngpt/./include/asm-m68k/unistd.h Fri Feb 1 13:12:28 2002
@@ -222,6 +222,8 @@
#define __NR_setfsuid32 215
#define __NR_setfsgid32 216
#define __NR_getdents64 220
+#define __NR_gettid 221
+#define __NR_tkill 222

/* user-visible error numbers are in the range -1 - -122: see
<asm-m68k/errno.h> */
--- linux-2.5.3/./include/asm-m68k/siginfo.h Mon Nov 27 19:11:26 2000
+++ linux-2.5.3-ngpt/./include/asm-m68k/siginfo.h Fri Feb 1 13:12:28 2002
@@ -117,6 +117,7 @@
#define SI_MESGQ -3 /* sent by real time mesq state change */
#define SI_ASYNCIO -4 /* sent by AIO completion */
#define SI_SIGIO -5 /* sent by queued SIGIO */
+#define SI_TKILL -6 /* sent by tkill system call */

#define SI_FROMUSER(siptr) ((siptr)->si_code <= 0)
#define SI_FROMKERNEL(siptr) ((siptr)->si_code > 0)
--- linux-2.5.3/./include/asm-sparc/unistd.h Sun Oct 21 12:36:54 2001
+++ linux-2.5.3-ngpt/./include/asm-sparc/unistd.h Fri Feb 1 13:12:29 2002
@@ -271,6 +271,7 @@
#define __NR_fdatasync 253
#define __NR_nfsservctl 254
#define __NR_aplib 255
+#define __NR_tkill 257

#define _syscall0(type,name) \
type name(void) \
--- linux-2.5.3/./include/asm-sparc/siginfo.h Mon Jun 19 19:59:39 2000
+++ linux-2.5.3-ngpt/./include/asm-sparc/siginfo.h Fri Feb 1 13:12:29 2002
@@ -112,6 +112,7 @@
#define SI_MESGQ -3 /* sent by real time mesq state change */
#define SI_ASYNCIO -4 /* sent by AIO completion */
#define SI_SIGIO -5 /* sent by queued SIGIO */
+#define SI_TKILL -6 /* sent by tkill system call */

#define SI_FROMUSER(siptr) ((siptr)->si_code <= 0)
#define SI_FROMKERNEL(siptr) ((siptr)->si_code > 0)
--- linux-2.5.3/./include/asm-ppc/unistd.h Fri Nov 2 19:43:54 2001
+++ linux-2.5.3-ngpt/./include/asm-ppc/unistd.h Fri Feb 1 13:12:29 2002
@@ -215,6 +215,7 @@
#define __NR_madvise 205
#define __NR_mincore 206
#define __NR_gettid 207
+#define __NR_tkill 208

#define __NR(n) #n

--- linux-2.5.3/./include/asm-ppc/siginfo.h Mon May 21 17:02:06 2001
+++ linux-2.5.3-ngpt/./include/asm-ppc/siginfo.h Fri Feb 1 13:12:29 2002
@@ -108,6 +108,7 @@
#define SI_MESGQ -3 /* sent by real time mesq state change */
#define SI_ASYNCIO -4 /* sent by AIO completion */
#define SI_SIGIO -5 /* sent by queued SIGIO */
+#define SI_TKILL -6 /* sent by tkill system call */

#define SI_FROMUSER(siptr) ((siptr)->si_code <= 0)
#define SI_FROMKERNEL(siptr) ((siptr)->si_code > 0)
--- linux-2.5.3/./include/asm-sparc64/unistd.h Sun Oct 21 12:36:54 2001
+++ linux-2.5.3-ngpt/./include/asm-sparc64/unistd.h Fri Feb 1 13:12:29 2002
@@ -273,6 +273,7 @@
#define __NR_fdatasync 253
#define __NR_nfsservctl 254
#define __NR_aplib 255
+#define __NR_tkill 256

#define _syscall0(type,name) \
type name(void) \
--- linux-2.5.3/./include/asm-sparc64/siginfo.h Wed May 24 20:38:26 2000
+++ linux-2.5.3-ngpt/./include/asm-sparc64/siginfo.h Fri Feb 1 13:12:29
2002
@@ -172,6 +172,7 @@
#define SI_MESGQ -3 /* sent by real time mesq state change */
#define SI_ASYNCIO -4 /* sent by AIO completion */
#define SI_SIGIO -5 /* sent by queued SIGIO */
+#define SI_TKILL -6 /* sent by tkill system call */

#define SI_FROMUSER(siptr) ((siptr)->si_code <= 0)
#define SI_FROMKERNEL(siptr) ((siptr)->si_code > 0)
--- linux-2.5.3/./include/asm-arm/siginfo.h Sun Aug 12 13:14:00 2001
+++ linux-2.5.3-ngpt/./include/asm-arm/siginfo.h Fri Feb 1 13:12:28 2002
@@ -107,6 +107,7 @@
#define SI_MESGQ -3 /* sent by real time mesq state change */
#define SI_ASYNCIO -4 /* sent by AIO completion */
#define SI_SIGIO -5 /* sent by queued SIGIO */
+#define SI_TKILL -6 /* sent by tkill system call */

#define SI_FROMUSER(siptr) ((siptr)->si_code <= 0)
#define SI_FROMKERNEL(siptr) ((siptr)->si_code > 0)
--- linux-2.5.3/./include/asm-sh/siginfo.h Thu Jan 4 15:19:13 2001
+++ linux-2.5.3-ngpt/./include/asm-sh/siginfo.h Fri Feb 1 13:12:29 2002
@@ -107,6 +107,7 @@
#define SI_MESGQ -3 /* sent by real time mesq state change */
#define SI_ASYNCIO -4 /* sent by AIO completion */
#define SI_SIGIO -5 /* sent by queued SIGIO */
+#define SI_TKILL -6 /* sent by tkill system call */

#define SI_FROMUSER(siptr) ((siptr)->si_code <= 0)
#define SI_FROMKERNEL(siptr) ((siptr)->si_code > 0)
--- linux-2.5.3/./include/asm-sh/unistd.h Mon Oct 2 13:57:34 2000
+++ linux-2.5.3-ngpt/./include/asm-sh/unistd.h Fri Feb 1 13:12:29 2002
@@ -231,6 +231,8 @@
#define __NR_madvise 219
#define __NR_getdents64 220
#define __NR_fcntl64 221
+#define __NR_gettid 222
+#define __NR_tkill 223

/* user-visible error numbers are in the range -1 - -125: see
<asm-sh/errno.h> */

--- linux-2.5.3/./include/asm-ia64/siginfo.h Thu Apr 5 14:51:47 2001
+++ linux-2.5.3-ngpt/./include/asm-ia64/siginfo.h Fri Feb 1 13:16:25 2002
@@ -124,6 +124,7 @@
#define SI_MESGQ -3 /* sent by real time mesq state change */
#define SI_ASYNCIO -4 /* sent by AIO completion */
#define SI_SIGIO -5 /* sent by queued SIGIO */
+#define SI_TKILL -6 /* sent by tkill system call */

#define SI_FROMUSER(siptr) ((siptr)->si_code <= 0)
#define SI_FROMKERNEL(siptr) ((siptr)->si_code > 0)
--- linux-2.5.3/./include/asm-ia64/unistd.h Fri Nov 9 16:26:17 2001
+++ linux-2.5.3-ngpt/./include/asm-ia64/unistd.h Fri Feb 1 13:12:28 2002
@@ -206,6 +206,7 @@
#define __NR_getdents64 1214
#define __NR_getunwind 1215
#define __NR_readahead 1216
+#define __NR_tkill 1217

#if !defined(__ASSEMBLY__) && !defined(ASSEMBLER)

--- linux-2.5.3/./include/asm-mips64/siginfo.h Wed Jul 4 13:50:39 2001
+++ linux-2.5.3-ngpt/./include/asm-mips64/siginfo.h Fri Feb 1 13:12:28 2002
@@ -127,6 +127,7 @@
#define SI_TIMER __SI_CODE(__SI_TIMER,-3) /* sent by timer expiration */
#define SI_MESGQ -4 /* sent by real time mesq state change */
#define SI_SIGIO -5 /* sent by queued SIGIO */
+#define SI_TKILL -6 /* sent by tkill system call */

#define SI_FROMUSER(siptr) ((siptr)->si_code <= 0)
#define SI_FROMKERNEL(siptr) ((siptr)->si_code > 0)
--- linux-2.5.3/./include/asm-mips64/unistd.h Tue Nov 28 23:42:04 2000
+++ linux-2.5.3-ngpt/./include/asm-mips64/unistd.h Fri Feb 1 13:12:28 2002
@@ -461,11 +461,13 @@
#define __NR_mincore (__NR_Linux + 211)
#define __NR_madvise (__NR_Linux + 212)
#define __NR_getdents64 (__NR_Linux + 213)
+#define __NR_gettid (__NR_Linux + 214)
+#define __NR_tkill (__NR_Linux + 215)

/*
* Offset of the last Linux flavoured syscall
*/
-#define __NR_Linux_syscalls 213
+#define __NR_Linux_syscalls 215

#ifndef _LANGUAGE_ASSEMBLY

--- linux-2.5.3/./include/asm-s390/siginfo.h Tue Feb 13 16:13:44 2001
+++ linux-2.5.3-ngpt/./include/asm-s390/siginfo.h Fri Feb 1 13:12:29 2002
@@ -115,6 +115,7 @@
#define SI_MESGQ -3 /* sent by real time mesq state change */
#define SI_ASYNCIO -4 /* sent by AIO completion */
#define SI_SIGIO -5 /* sent by queued SIGIO */
+#define SI_TKILL -6 /* sent by tkill system call */

#define SI_FROMUSER(siptr) ((siptr)->si_code <= 0)
#define SI_FROMKERNEL(siptr) ((siptr)->si_code > 0)
--- linux-2.5.3/./include/asm-s390/unistd.h Thu Oct 11 11:43:38 2001
+++ linux-2.5.3-ngpt/./include/asm-s390/unistd.h Fri Feb 1 13:12:29 2002
@@ -211,6 +211,8 @@
#define __NR_mincore 218
#define __NR_madvise 219
#define __NR_getdents64 220
+#define __NR_gettid 226
+#define __NR_tkill 227

/* user-visible error numbers are in the range -1 - -122: see
<asm-s390/errno.h> */
--- linux-2.5.3/./include/asm-parisc/siginfo.h Tue Dec 5 14:29:39 2000
+++ linux-2.5.3-ngpt/./include/asm-parisc/siginfo.h Fri Feb 1 13:12:29 2002
@@ -107,6 +107,7 @@
#define SI_MESGQ -3 /* sent by real time mesq state change */
#define SI_ASYNCIO -4 /* sent by AIO completion */
#define SI_SIGIO -5 /* sent by queued SIGIO */
+#define SI_TKILL -6 /* sent by tkill system call */

#define SI_FROMUSER(siptr) ((siptr)->si_code <= 0)
#define SI_FROMKERNEL(siptr) ((siptr)->si_code > 0)
--- linux-2.5.3/./include/asm-parisc/unistd.h Tue Dec 5 14:29:39 2000
+++ linux-2.5.3-ngpt/./include/asm-parisc/unistd.h Fri Feb 1 13:12:29 2002
@@ -689,8 +689,10 @@

#define __NR_getpmsg (__NR_Linux + 196) /* some people
actually want streams */
#define __NR_putpmsg (__NR_Linux + 197) /* some people
actually want streams */
+#define __NR_gettid (__NR_Linux + 198)
+#define __NR_tkill (__NR_Linux + 199)

-#define __NR_Linux_syscalls 197
+#define __NR_Linux_syscalls 199

#define HPUX_GATEWAY_ADDR 0xC0000004
#define LINUX_GATEWAY_ADDR 0x100
--- linux-2.5.3/./include/asm-cris/siginfo.h Thu Feb 8 18:32:44 2001
+++ linux-2.5.3-ngpt/./include/asm-cris/siginfo.h Fri Feb 1 13:12:28 2002
@@ -107,6 +107,7 @@
#define SI_MESGQ -3 /* sent by real time mesq state change */
#define SI_ASYNCIO -4 /* sent by AIO completion */
#define SI_SIGIO -5 /* sent by queued SIGIO */
+#define SI_TKILL -6 /* sent by tkill system call */

#define SI_FROMUSER(siptr) ((siptr)->si_code <= 0)
#define SI_FROMKERNEL(siptr) ((siptr)->si_code > 0)
--- linux-2.5.3/./include/asm-cris/unistd.h Mon Jan 21 18:00:39 2002
+++ linux-2.5.3-ngpt/./include/asm-cris/unistd.h Fri Feb 1 13:12:28 2002
@@ -230,6 +230,7 @@
#define __NR_security 223 /* syscall for security modules */
#define __NR_gettid 224
#define __NR_readahead 225
+#define __NR_tkill 226

/* XXX - _foo needs to be __foo, while __NR_bar could be _NR_bar. */
#define _syscall0(type,name) \
--- linux-2.5.3/./include/asm-s390x/unistd.h Thu Oct 11 11:43:38 2001
+++ linux-2.5.3-ngpt/./include/asm-s390x/unistd.h Fri Feb 1 13:12:29 2002
@@ -181,6 +181,8 @@
#define __NR_mincore 218
#define __NR_madvise 219
#define __NR_getdents64 220
+#define __NR_gettid 226
+#define __NR_tkill 227

/* user-visible error numbers are in the range -1 - -122: see
<asm-s390/errno.h> */
--- linux-2.5.3/./include/asm-s390x/siginfo.h Tue Feb 13 16:13:44 2001
+++ linux-2.5.3-ngpt/./include/asm-s390x/siginfo.h Fri Feb 1 13:12:29 2002
@@ -115,6 +115,7 @@
#define SI_MESGQ -3 /* sent by real time mesq state change */
#define SI_ASYNCIO -4 /* sent by AIO completion */
#define SI_SIGIO -5 /* sent by queued SIGIO */
+#define SI_TKILL -6 /* sent by tkill system call */

#define SI_FROMUSER(siptr) ((siptr)->si_code <= 0)
#define SI_FROMKERNEL(siptr) ((siptr)->si_code > 0)
--- linux-2.5.3/./arch/i386/kernel/entry.S Tue Jan 29 20:50:30 2002
+++ linux-2.5.3-ngpt/./arch/i386/kernel/entry.S Fri Feb 1 13:14:11 2002
@@ -667,6 +667,7 @@
         .long SYMBOL_NAME(sys_removexattr) /* 235 */
         .long SYMBOL_NAME(sys_lremovexattr)
         .long SYMBOL_NAME(sys_fremovexattr)
+ .long SYMBOL_NAME(sys_tkill)

         .rept NR_syscalls-(.-sys_call_table)/4
                 .long SYMBOL_NAME(sys_ni_syscall)
--- linux-2.5.3/./arch/i386/kernel/signal.c Mon Jan 28 17:11:45 2002
+++ linux-2.5.3-ngpt/./arch/i386/kernel/signal.c Wed Feb 6 09:47:45 2002
@@ -683,10 +683,7 @@
                                 /* FALLTHRU */

                         default:
                                 lock_kernel();
- sigaddset(&current->pending.signal, signr);
- current->flags |= PF_SIGNALED;
- do_exit(exit_code);
+ sig_exit(signr, exit_code, &info);
                                 /* NOTREACHED */
                         }
                         continue;
--- linux-2.5.3/./arch/sparc/kernel/signal.c Mon Jan 14 12:10:44 2002
+++ linux-2.5.3-ngpt/./arch/sparc/kernel/signal.c Wed Feb 6 10:02:31 2002
@@ -1280,10 +1280,7 @@
#endif
                                 /* fall through */
                         default:
- sigaddset(&current->pending.signal, signr);
- recalc_sigpending(current);
- current->flags |= PF_SIGNALED;
- do_exit(exit_code);
+ sig_exit(signr, exit_code, &info);
                                 /* NOT REACHED */
                         }
                 }
--- linux-2.5.3/./arch/sparc/kernel/systbls.S Sun Oct 21 12:36:54 2001
+++ linux-2.5.3-ngpt/./arch/sparc/kernel/systbls.S Fri Feb 1 13:12:28 2002
@@ -70,7 +70,7 @@
/*240*/ .long sys_munlockall, sys_sched_setparam, sys_sched_getparam,
sys_sched_setscheduler, sys_sched_getscheduler
/*245*/ .long sys_sched_yield, sys_sched_get_priority_max,
sys_sched_get_priority_min, sys_sched_rr_get_interval, sys_nanosleep
/*250*/ .long sparc_mremap, sys_sysctl, sys_getsid, sys_fdatasync,
sys_nfsservctl
-/*255*/ .long sys_nis_syscall, sys_nis_syscall
+/*255*/ .long sys_nis_syscall, sys_nis_syscall, sys_tkill

#ifdef CONFIG_SUNOS_EMUL
/* Now the SunOS syscall table. */
--- linux-2.5.3/./arch/mips/kernel/signal.c Sun Sep 9 12:43:01 2001
+++ linux-2.5.3-ngpt/./arch/mips/kernel/signal.c Wed Feb 6 10:02:48 2002
@@ -661,10 +661,7 @@
/* FALLTHRU */

                         default:
- sigaddset(&current->pending.signal, signr);
- recalc_sigpending(current);
- current->flags |= PF_SIGNALED;
- do_exit(exit_code);
+ sig_exit(signr, exit_code, &info);
                                 /* NOTREACHED */
                         }
                 }
--- linux-2.5.3/./arch/mips/kernel/syscalls.h Mon Oct 8 12:39:18 2001
+++ linux-2.5.3-ngpt/./arch/mips/kernel/syscalls.h Fri Feb 1 13:12:28 2002
@@ -235,3 +235,5 @@
SYS(sys_madvise, 3)
SYS(sys_getdents64, 3)
SYS(sys_fcntl64, 3) /* 4220 */
+SYS(sys_gettid, 0)
+SYS(sys_tkill, 2)
--- linux-2.5.3/./arch/ppc/kernel/misc.S Fri Nov 2 19:43:54 2001
+++ linux-2.5.3-ngpt/./arch/ppc/kernel/misc.S Fri Feb 1 13:12:28 2002
@@ -1121,6 +1121,7 @@
         .long sys_madvise /* 205 */
         .long sys_mincore
         .long sys_gettid
+ .long sys_tkill
         .rept NR_syscalls-(.-sys_call_table)/4
                 .long sys_ni_syscall
         .endr
--- linux-2.5.3/./arch/ppc/kernel/signal.c Mon May 21 19:04:47 2001
+++ linux-2.5.3-ngpt/./arch/ppc/kernel/signal.c Wed Feb 6 10:03:06 2002
@@ -641,10 +641,7 @@
                                 /* FALLTHRU */

         .rept NR_syscalls-(.-SYMBOL_NAME(sys_call_table))/4
                 .long SYMBOL_NAME(sys_ni_syscall)
--- linux-2.5.3/./arch/m68k/kernel/signal.c Wed Jan 24 17:21:28 2001
+++ linux-2.5.3-ngpt/./arch/m68k/kernel/signal.c Wed Feb 6 10:03:22 2002
@@ -1135,10 +1135,7 @@
                                 /* FALLTHRU */

                         default:
- sigaddset(&current->pending.signal, signr);
- recalc_sigpending(current);
- current->flags |= PF_SIGNALED;
- do_exit(exit_code);
+ sig_exit(signr, exit_code, &info);
                                 /* NOTREACHED */
                         }
                 }
--- linux-2.5.3/./arch/sparc64/kernel/signal32.c Mon Jan 14 12:10:44 2002
+++ linux-2.5.3-ngpt/./arch/sparc64/kernel/signal32.c Wed Feb 6 10:03:43
2002
@@ -1479,10 +1479,7 @@
#endif
                                 /* fall through */
                         default:
- sigaddset(&current->pending.signal, signr);
- recalc_sigpending(current);
- current->flags |= PF_SIGNALED;
- do_exit(exit_code);
+ sig_exit(signr, exit_code, &info);
                                 /* NOT REACHED */
                         }
                 }
--- linux-2.5.3/./arch/sparc64/kernel/systbls.S Sun Oct 21 12:36:54 2001
+++ linux-2.5.3-ngpt/./arch/sparc64/kernel/systbls.S Fri Feb 1 13:12:28
2002
@@ -70,7 +70,7 @@
/*240*/ .word sys_munlockall, sys_sched_setparam, sys_sched_getparam,
sys_sched_setscheduler, sys_sched_getscheduler
         .word sys_sched_yield, sys_sched_get_priority_max,
sys_sched_get_priority_min, sys32_sched_rr_get_interval, sys32_nanosleep
/*250*/ .word sys32_mremap, sys32_sysctl, sys_getsid, sys_fdatasync,
sys32_nfsservctl
- .word sys_aplib
+ .word sys_aplib, sys_tkill

/* Now the 64-bit native Linux syscall table. */

@@ -129,7 +129,7 @@
/*240*/ .word sys_munlockall, sys_sched_setparam, sys_sched_getparam,
sys_sched_setscheduler, sys_sched_getscheduler
.word sys_sched_yield, sys_sched_get_priority_max,
sys_sched_get_priority_min, sys_sched_rr_get_interval, sys_nanosleep
/*250*/ .word sys64_mremap, sys_sysctl, sys_getsid, sys_fdatasync,
sys_nfsservctl
- .word sys_aplib
+ .word sys_aplib, sys_tkill

#if defined(CONFIG_SUNOS_EMUL) || defined(CONFIG_SOLARIS_EMUL) || \
     defined(CONFIG_SOLARIS_EMUL_MODULE)
--- linux-2.5.3/./arch/sparc64/kernel/signal.c Mon Jan 14 12:10:44 2002
+++ linux-2.5.3-ngpt/./arch/sparc64/kernel/signal.c Wed Feb 6 10:03:54 2002
@@ -807,10 +807,7 @@
#endif
                                 /* fall through */
                         default:
- sigaddset(&current->pending.signal, signr);
- recalc_sigpending(current);
- current->flags |= PF_SIGNALED;
- do_exit(exit_code);
+ sig_exit(signr, exit_code, &info);
                                 /* NOT REACHED */
                         }
                 }
--- linux-2.5.3/./arch/arm/kernel/calls.S Mon Oct 8 12:39:18 2001
+++ linux-2.5.3-ngpt/./arch/arm/kernel/calls.S Fri Feb 1 13:12:28 2002
@@ -236,6 +236,8 @@
                 .long SYMBOL_NAME(sys_mincore)
/* 220 */ .long SYMBOL_NAME(sys_madvise)
                 .long SYMBOL_NAME(sys_fcntl64)
+ .long SYMBOL_NAME(sys_gettid)
+ .long SYMBOL_NAME(sys_tkill)
__syscall_end:

.rept NR_syscalls - (__syscall_end - __syscall_start) / 4
--- linux-2.5.3/./arch/arm/kernel/signal.c Sat Jan 5 15:04:30 2002
+++ linux-2.5.3-ngpt/./arch/arm/kernel/signal.c Wed Feb 6 10:04:08 2002
@@ -637,10 +637,7 @@
/* FALLTHRU */

         /*
          * NOTE!! This doesn't have to be exact - we just have
--- linux-2.5.3/./arch/sh/kernel/signal.c Thu Jan 24 14:08:15 2002
+++ linux-2.5.3-ngpt/./arch/sh/kernel/signal.c Wed Feb 6 10:42:28 2002
@@ -673,10 +673,7 @@
                                 /* FALLTHRU */

.macro sys function, nargs
--- linux-2.5.3/./arch/mips64/kernel/signal.c Sun Sep 9 12:43:01 2001
+++ linux-2.5.3-ngpt/./arch/mips64/kernel/signal.c Wed Feb 6 10:04:45 2002
@@ -685,10 +685,7 @@
/* FALLTHRU */

/*
--- linux-2.5.3/./arch/s390/kernel/signal.c Thu Oct 11 11:04:57 2001
+++ linux-2.5.3-ngpt/./arch/s390/kernel/signal.c Wed Feb 6 10:44:27 2002
@@ -563,10 +563,7 @@
/* FALLTHRU */

                         default:
- lock_kernel();
- sigaddset(&current->pending.signal, signr);
- recalc_sigpending(current);
- current->flags |= PF_SIGNALED;
- do_exit(exit_code);
+ sig_exit(signr, exit_code, &info);
                                 /* NOTREACHED */
                         }
                 }
--- linux-2.5.3/./arch/parisc/kernel/syscall.S Mon Oct 8 12:39:18 2001
+++ linux-2.5.3-ngpt/./arch/parisc/kernel/syscall.S Fri Feb 1 13:12:28 2002
@@ -552,6 +552,8 @@
         ENTRY_UHOH(shmctl) /* 195 */
         ENTRY_SAME(ni_syscall) /* streams1 */
         ENTRY_SAME(ni_syscall) /* streams2 */
+ ENTRY_SAME(gettid)
+ ENTRY_SAME(tkill)

.end

--- linux-2.5.3/./arch/cris/kernel/entry.S Mon Jan 21 18:00:39 2002
+++ linux-2.5.3-ngpt/./arch/cris/kernel/entry.S Fri Feb 1 13:12:28 2002
@@ -1015,6 +1015,7 @@
         .long SYMBOL_NAME(sys_ni_syscall) /* Reserved for Security */
         .long SYMBOL_NAME(sys_gettid)
         .long SYMBOL_NAME(sys_readahead) /* 225 */
+ .long SYMBOL_NAME(sys_tkill)

/*
* NOTE!! This doesn't have to be exact - we just have
--- linux-2.5.3/./arch/cris/kernel/signal.c Mon Oct 8 13:43:54 2001
+++ linux-2.5.3-ngpt/./arch/cris/kernel/signal.c Wed Feb 6 10:44:53 2002
@@ -679,10 +679,7 @@

                         default:
                                 lock_kernel();
- sigaddset(&current->pending.signal, signr);
- recalc_sigpending(current);
- current->flags |= PF_SIGNALED;
- do_exit(exit_code);
+ sig_exit(signr, exit_code, &info);
                                 /* NOTREACHED */
                         }
                 }
--- linux-2.5.3/./arch/s390x/kernel/entry.S Mon Jan 28 17:14:23 2002
+++ linux-2.5.3-ngpt/./arch/s390x/kernel/entry.S Fri Feb 1 13:12:28 2002
@@ -635,6 +635,8 @@
         .long SYSCALL(sys_ni_syscall,sys_ni_syscall) /* 224 - reserved for
posix_acl */
         .rept 255-224
         .long SYSCALL(sys_ni_syscall,sys_ni_syscall)
+ .long SYSCALL(sys_gettid,sys_gettid)
+ .long SYSCALL(sys_tkill,sys_tkill)
         .endr

/*
--- linux-2.5.3/./arch/s390x/kernel/signal.c Thu Oct 11 11:04:57 2001
+++ linux-2.5.3-ngpt/./arch/s390x/kernel/signal.c Wed Feb 6 10:05:16 2002
@@ -569,10 +569,7 @@
/* FALLTHRU */

-
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