Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6:
  sparc64: Add global register dumping facility.
  sparc: remove CVS keywords
  sparc64: remove CVS keywords

arch/sparc/Kconfig

@@ -1,4 +1,3 @@
-# $Id: config.in,v 1.113 2002/01/24 22:14:44 davem Exp $
 # For a description of the syntax of this configuration file,
 # see Documentation/kbuild/kconfig-language.txt.
 #

arch/sparc/boot/Makefile

@@ -1,4 +1,3 @@
-# $Id: Makefile,v 1.10 2000/02/23 08:17:46 jj Exp $
 # Makefile for the Sparc boot stuff.
 #
 # Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)

arch/sparc/boot/btfixupprep.c

@@ -1,4 +1,4 @@
-/* $Id: btfixupprep.c,v 1.6 2001/08/22 15:27:47 davem Exp $
+/*
    Simple utility to prepare vmlinux image for sparc.
    Resolves all BTFIXUP uses and settings and creates
    a special .s object to link to the image.

arch/sparc/boot/piggyback.c

@@ -1,4 +1,4 @@
-/* $Id: piggyback.c,v 1.4 2000/12/05 00:48:57 anton Exp $
+/*
    Simple utility to make a single-image install kernel with initial ramdisk
    for Sparc tftpbooting without need to set up nfs.
 

arch/sparc/kernel/ebus.c

@@ -1,4 +1,4 @@
-/* $Id: ebus.c,v 1.20 2002/01/05 01:13:43 davem Exp $
+/*
  * ebus.c: PCI to EBus bridge device.
  *
  * Copyright (C) 1997  Eddie C. Dost  (ecd@skynet.be)

arch/sparc/kernel/etrap.S

@@ -1,4 +1,4 @@
-/* $Id: etrap.S,v 1.31 2000/01/08 16:38:18 anton Exp $
+/*
  * etrap.S: Sparc trap window preparation for entry into the
  *          Linux kernel.
  *

arch/sparc/kernel/head.S

@@ -1,4 +1,4 @@
-/* $Id: head.S,v 1.105 2001/08/12 09:08:56 davem Exp $
+/*
  * head.S: The initial boot code for the Sparc port of Linux.
  *
  * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)

arch/sparc/kernel/idprom.c

@@ -1,4 +1,4 @@
-/* $Id: idprom.c,v 1.24 1999/08/31 06:54:20 davem Exp $
+/*
  * idprom.c: Routines to load the idprom into kernel addresses and
  *           interpret the data contained within.
  *

arch/sparc/kernel/ioport.c

@@ -1,4 +1,4 @@
-/* $Id: ioport.c,v 1.45 2001/10/30 04:54:21 davem Exp $
+/*
  * ioport.c:  Simple io mapping allocator.
  *
  * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)

arch/sparc/kernel/irq.c

@@ -1,4 +1,4 @@
-/*  $Id: irq.c,v 1.114 2001/12/11 04:55:51 davem Exp $
+/*
  *  arch/sparc/kernel/irq.c:  Interrupt request handling routines. On the
  *                            Sparc the IRQs are basically 'cast in stone'
  *                            and you are supposed to probe the prom's device

arch/sparc/kernel/muldiv.c

@@ -1,4 +1,4 @@
-/* $Id: muldiv.c,v 1.5 1997/12/15 20:07:20 ecd Exp $
+/*
  * muldiv.c: Hardware multiply/division illegal instruction trap
  *		for sun4c/sun4 (which do not have those instructions)
  *

arch/sparc/kernel/rtrap.S

@@ -1,4 +1,4 @@
-/* $Id: rtrap.S,v 1.58 2002/01/31 03:30:05 davem Exp $
+/*
  * rtrap.S: Return from Sparc trap low-level code.
  *
  * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)

arch/sparc/kernel/setup.c

@@ -1,4 +1,4 @@
-/*  $Id: setup.c,v 1.126 2001/11/13 00:49:27 davem Exp $
+/*
  *  linux/arch/sparc/kernel/setup.c
  *
  *  Copyright (C) 1995  David S. Miller (davem@caip.rutgers.edu)

arch/sparc/kernel/sparc_ksyms.c

@@ -1,4 +1,4 @@
-/* $Id: sparc_ksyms.c,v 1.107 2001/07/17 16:17:33 anton Exp $
+/*
  * arch/sparc/kernel/ksyms.c: Sparc specific ksyms support.
  *
  * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu)

arch/sparc/kernel/sun4d_irq.c

@@ -1,4 +1,4 @@
-/*  $Id: sun4d_irq.c,v 1.29 2001/12/11 04:55:51 davem Exp $
+/*
  *  arch/sparc/kernel/sun4d_irq.c:
  *			SS1000/SC2000 interrupt handling.
  *

arch/sparc/kernel/trampoline.S

@@ -1,4 +1,4 @@
-/* $Id: trampoline.S,v 1.14 2002/01/11 08:45:38 davem Exp $
+/*
  * trampoline.S: SMP cpu boot-up trampoline code.
  *
  * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)

arch/sparc/kernel/traps.c

@@ -1,4 +1,4 @@
-/* $Id: traps.c,v 1.64 2000/09/03 15:00:49 anton Exp $
+/*
  * arch/sparc/kernel/traps.c
  *
  * Copyright 1995 David S. Miller (davem@caip.rutgers.edu)

arch/sparc/kernel/unaligned.c

@@ -1,4 +1,4 @@
-/* $Id: unaligned.c,v 1.23 2001/12/21 00:54:31 davem Exp $
+/*
  * unaligned.c: Unaligned load/store trap handling with special
  *              cases for the kernel to do them more quickly.
  *

arch/sparc/kernel/wof.S

@@ -1,4 +1,4 @@
-/* $Id: wof.S,v 1.40 2000/01/08 16:38:18 anton Exp $
+/*
  * wof.S: Sparc window overflow handler.
  *
  * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)

arch/sparc/kernel/wuf.S

@@ -1,4 +1,4 @@
-/* $Id: wuf.S,v 1.39 2000/01/08 16:38:18 anton Exp $
+/*
  * wuf.S: Window underflow trap handler for the Sparc.
  *
  * Copyright (C) 1995 David S. Miller

arch/sparc/lib/Makefile

@@ -1,4 +1,3 @@
-# $Id: Makefile,v 1.35 2000/12/15 00:41:18 davem Exp $
 # Makefile for Sparc library files..
 #
 

arch/sparc/lib/ashldi3.S

@@ -1,4 +1,4 @@
-/* $Id: ashldi3.S,v 1.2 1999/11/19 04:11:46 davem Exp $
+/*
  * ashldi3.S:	GCC emits these for certain drivers playing
  *		with long longs.
  *

arch/sparc/lib/ashrdi3.S

@@ -1,4 +1,4 @@
-/* $Id: ashrdi3.S,v 1.4 1999/11/19 04:11:49 davem Exp $
+/*
  * ashrdi3.S:	The filesystem code creates all kinds of references to
  *              this little routine on the sparc with gcc.
  *

arch/sparc/lib/blockops.S

@@ -1,4 +1,4 @@
-/* $Id: blockops.S,v 1.8 1998/01/30 10:58:44 jj Exp $
+/*
  * blockops.S: Common block zero optimized routines.
  *
  * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu)

arch/sparc/lib/locks.S

@@ -1,4 +1,4 @@
-/* $Id: locks.S,v 1.16 2000/02/26 11:02:47 anton Exp $
+/*
  * locks.S: SMP low-level lock primitives on Sparc.
  *
  * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu)

arch/sparc/lib/lshrdi3.S

@@ -1,4 +1,3 @@
-/* $Id: lshrdi3.S,v 1.1 1999/03/21 06:37:45 davem Exp $ */
 
 	.globl	__lshrdi3
 __lshrdi3:

arch/sparc/lib/memscan.S

@@ -1,4 +1,4 @@
-/* $Id: memscan.S,v 1.4 1996/09/08 02:01:20 davem Exp $
+/*
  * memscan.S: Optimized memscan for the Sparc.
  *
  * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu)

arch/sparc/lib/mul.S

@@ -1,4 +1,4 @@
-/* $Id: mul.S,v 1.4 1996/09/30 02:22:32 davem Exp $
+/*
  * mul.S:       This routine was taken from glibc-1.09 and is covered
  *              by the GNU Library General Public License Version 2.
  */

arch/sparc/lib/rem.S

@@ -1,4 +1,4 @@
-/* $Id: rem.S,v 1.7 1996/09/30 02:22:34 davem Exp $
+/*
  * rem.S:       This routine was taken from glibc-1.09 and is covered
  *              by the GNU Library General Public License Version 2.
  */

arch/sparc/lib/rwsem.S

@@ -1,4 +1,4 @@
-/* $Id: rwsem.S,v 1.5 2000/05/09 17:40:13 davem Exp $
+/*
  * Assembly part of rw semaphores.
  *
  * Copyright (C) 1999 Jakub Jelinek (jakub@redhat.com)

arch/sparc/lib/sdiv.S

@@ -1,4 +1,4 @@
-/* $Id: sdiv.S,v 1.6 1996/10/02 17:37:00 davem Exp $
+/*
  * sdiv.S:      This routine was taken from glibc-1.09 and is covered
  *              by the GNU Library General Public License Version 2.
  */

arch/sparc/lib/strncmp.S

@@ -1,4 +1,4 @@
-/* $Id: strncmp.S,v 1.2 1996/09/09 02:47:20 davem Exp $
+/*
  * strncmp.S: Hand optimized Sparc assembly of GCC output from GNU libc
  *            generic strncmp routine.
  */

arch/sparc/lib/udiv.S

@@ -1,4 +1,4 @@
-/* $Id: udiv.S,v 1.4 1996/09/30 02:22:38 davem Exp $
+/*
  * udiv.S:      This routine was taken from glibc-1.09 and is covered
  *              by the GNU Library General Public License Version 2.
  */

arch/sparc/lib/umul.S

@@ -1,4 +1,4 @@
-/* $Id: umul.S,v 1.4 1996/09/30 02:22:39 davem Exp $
+/*
  * umul.S:      This routine was taken from glibc-1.09 and is covered
  *              by the GNU Library General Public License Version 2.
  */

arch/sparc/lib/urem.S

@@ -1,4 +1,4 @@
-/* $Id: urem.S,v 1.4 1996/09/30 02:22:42 davem Exp $
+/*
  * urem.S:      This routine was taken from glibc-1.09 and is covered
  *              by the GNU Library General Public License Version 2.
  */

arch/sparc/math-emu/ashldi3.S

@@ -1,4 +1,4 @@
-/* $Id: ashldi3.S,v 1.1 1998/04/06 16:09:28 jj Exp $
+/*
  * ashldi3.S:	Math-emu code creates all kinds of references to
  *              this little routine on the sparc with gcc.
  *

arch/sparc/mm/Makefile

@@ -1,4 +1,3 @@
-# $Id: Makefile,v 1.38 2000/12/15 00:41:22 davem Exp $
 # Makefile for the linux Sparc-specific parts of the memory manager.
 #
 

arch/sparc/mm/fault.c

@@ -1,4 +1,4 @@
-/* $Id: fault.c,v 1.122 2001/11/17 07:19:26 davem Exp $
+/*
  * fault.c:  Page fault handlers for the Sparc.
  *
  * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)

arch/sparc/mm/generic.c

@@ -1,4 +1,4 @@
-/* $Id: generic.c,v 1.14 2001/12/21 04:56:15 davem Exp $
+/*
  * generic.c: Generic Sparc mm routines that are not dependent upon
  *            MMU type but are Sparc specific.
  *

arch/sparc/mm/hypersparc.S

@@ -1,4 +1,4 @@
-/* $Id: hypersparc.S,v 1.18 2001/12/21 04:56:15 davem Exp $
+/*
  * hypersparc.S: High speed Hypersparc mmu/cache operations.
  *
  * Copyright (C) 1997 David S. Miller (davem@caip.rutgers.edu)

arch/sparc/mm/init.c

@@ -1,4 +1,4 @@
-/*  $Id: init.c,v 1.103 2001/11/19 19:03:08 davem Exp $
+/*
  *  linux/arch/sparc/mm/init.c
  *
  *  Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)

arch/sparc/mm/io-unit.c

@@ -1,4 +1,4 @@
-/* $Id: io-unit.c,v 1.24 2001/12/17 07:05:09 davem Exp $
+/*
  * io-unit.c:  IO-UNIT specific routines for memory management.
  *
  * Copyright (C) 1997,1998 Jakub Jelinek    (jj@sunsite.mff.cuni.cz)

arch/sparc/mm/loadmmu.c

@@ -1,4 +1,4 @@
-/* $Id: loadmmu.c,v 1.56 2000/02/08 20:24:21 davem Exp $
+/*
  * loadmmu.c:  This code loads up all the mm function pointers once the
  *             machine type has been determined.  It also sets the static
  *             mmu values such as PAGE_NONE, etc.

arch/sparc/mm/nosrmmu.c

@@ -1,4 +1,4 @@
-/* $Id: nosrmmu.c,v 1.5 1999/11/19 04:11:54 davem Exp $
+/*
  * nosrmmu.c: This file is a bunch of dummies for sun4 compiles, 
  *         so that it does not need srmmu and avoid ifdefs.
  *

arch/sparc/mm/nosun4c.c

@@ -1,4 +1,4 @@
-/* $Id: nosun4c.c,v 1.3 2000/02/14 04:52:36 jj Exp $
+/*
  * nosun4c.c: This file is a bunch of dummies for SMP compiles, 
  *         so that it does not need sun4c and avoid ifdefs.
  *

arch/sparc/mm/swift.S

@@ -1,4 +1,4 @@
-/* $Id: swift.S,v 1.9 2002/01/08 11:11:59 davem Exp $
+/*
  * swift.S: MicroSparc-II mmu/cache operations.
  *
  * Copyright (C) 1999 David S. Miller (davem@redhat.com)

arch/sparc/mm/tsunami.S

@@ -1,4 +1,4 @@
-/* $Id: tsunami.S,v 1.7 2001/12/21 04:56:15 davem Exp $
+/*
  * tsunami.S: High speed MicroSparc-I mmu/cache operations.
  *
  * Copyright (C) 1997 David S. Miller (davem@caip.rutgers.edu)

arch/sparc/mm/viking.S

@@ -1,4 +1,4 @@
-/* $Id: viking.S,v 1.19 2001/12/21 04:56:15 davem Exp $
+/*
  * viking.S: High speed Viking cache/mmu operations
  *
  * Copyright (C) 1997  Eddie C. Dost  (ecd@skynet.be)

arch/sparc/prom/Makefile

@@ -1,4 +1,3 @@
-# $Id: Makefile,v 1.8 2000/12/15 00:41:22 davem Exp $
 # Makefile for the Sun Boot PROM interface library under
 # Linux.
 #

arch/sparc/prom/bootstr.c

@@ -1,4 +1,4 @@
-/* $Id: bootstr.c,v 1.20 2000/02/08 20:24:23 davem Exp $
+/*
  * bootstr.c:  Boot string/argument acquisition from the PROM.
  *
  * Copyright(C) 1995 David S. Miller (davem@caip.rutgers.edu)

arch/sparc/prom/console.c

@@ -1,4 +1,4 @@
-/* $Id: console.c,v 1.25 2001/10/30 04:54:22 davem Exp $
+/*
  * console.c: Routines that deal with sending and receiving IO
  *            to/from the current console device using the PROM.
  *

arch/sparc/prom/devmap.c

@@ -1,4 +1,4 @@
-/* $Id: devmap.c,v 1.7 2000/08/26 02:38:03 anton Exp $
+/*
  * promdevmap.c:  Map device/IO areas to virtual addresses.
  *
  * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)

arch/sparc/prom/devops.c

@@ -1,4 +1,4 @@
-/* $Id: devops.c,v 1.13 2000/08/26 02:38:03 anton Exp $
+/*
  * devops.c:  Device operations using the PROM.
  *
  * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)

arch/sparc/prom/init.c

@@ -1,4 +1,4 @@
-/* $Id: init.c,v 1.14 2000/01/29 01:09:12 anton Exp $
+/*
  * init.c:  Initialize internal variables used by the PROM
  *          library functions.
  *

arch/sparc/prom/misc.c

@@ -1,4 +1,4 @@
-/* $Id: misc.c,v 1.18 2000/08/26 02:38:03 anton Exp $
+/*
  * misc.c:  Miscellaneous prom functions that don't belong
  *          anywhere else.
  *

arch/sparc/prom/mp.c

@@ -1,4 +1,4 @@
-/* $Id: mp.c,v 1.12 2000/08/26 02:38:03 anton Exp $
+/*
  * mp.c:  OpenBoot Prom Multiprocessor support routines.  Don't call
  *        these on a UP or else you will halt and catch fire. ;)
  *

arch/sparc/prom/palloc.c

@@ -1,4 +1,4 @@
-/* $Id: palloc.c,v 1.4 1996/04/25 06:09:48 davem Exp $
+/*
  * palloc.c:  Memory allocation from the Sun PROM.
  *
  * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)

arch/sparc/prom/ranges.c

@@ -1,4 +1,4 @@
-/* $Id: ranges.c,v 1.15 2001/12/19 00:29:51 davem Exp $
+/*
  * ranges.c: Handle ranges in newer proms for obio/sbus.
  *
  * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)

arch/sparc/prom/segment.c

@@ -1,4 +1,4 @@
-/* $Id: segment.c,v 1.7 2000/08/26 02:38:03 anton Exp $
+/*
  * segment.c:  Prom routine to map segments in other contexts before
  *             a standalone is completely mapped.  This is for sun4 and
  *             sun4c architectures only.

arch/sparc/prom/tree.c

@@ -1,4 +1,4 @@
-/* $Id: tree.c,v 1.26 2000/08/26 02:38:03 anton Exp $
+/*
  * tree.c: Basic device tree traversal/scanning for the Linux
  *         prom library.
  *

arch/sparc64/Makefile

@@ -1,4 +1,3 @@
-# $Id: Makefile,v 1.52 2002/02/09 19:49:31 davem Exp $
 # sparc64/Makefile
 #
 # Makefile for the architecture dependent flags and dependencies on the

arch/sparc64/boot/Makefile

@@ -1,4 +1,3 @@
-# $Id: Makefile,v 1.4 1997/12/15 20:08:56 ecd Exp $
 # Makefile for the Sparc64 boot stuff.
 #
 # Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)

arch/sparc64/boot/piggyback.c

@@ -1,4 +1,4 @@
-/* $Id: piggyback.c,v 1.2 2000/09/19 14:34:39 anton Exp $
+/*
    Simple utility to make a single-image install kernel with initial ramdisk
    for Sparc64 tftpbooting without need to set up nfs.
    

arch/sparc64/kernel/dtlb_prot.S

@@ -1,4 +1,4 @@
-/* $Id: dtlb_prot.S,v 1.22 2001/04/11 23:40:32 davem Exp $
+/*
  * dtlb_prot.S: DTLB protection trap strategy.
  *              This is included directly into the trap table.
  *

arch/sparc64/kernel/ebus.c

@@ -1,4 +1,4 @@
-/* $Id: ebus.c,v 1.64 2001/11/08 04:41:33 davem Exp $
+/*
  * ebus.c: PCI to EBus bridge device.
  *
  * Copyright (C) 1997  Eddie C. Dost  (ecd@skynet.be)

arch/sparc64/kernel/etrap.S

@@ -1,4 +1,4 @@
-/* $Id: etrap.S,v 1.46 2002/02/09 19:49:30 davem Exp $
+/*
  * etrap.S: Preparing for entry into the kernel on Sparc V9.
  *
  * Copyright (C) 1996, 1997 David S. Miller (davem@caip.rutgers.edu)

arch/sparc64/kernel/idprom.c

@@ -1,4 +1,4 @@
-/* $Id: idprom.c,v 1.3 1999/08/31 06:54:53 davem Exp $
+/*
  * idprom.c: Routines to load the idprom into kernel addresses and
  *           interpret the data contained within.
  *

arch/sparc64/kernel/process.c

@@ -1,6 +1,6 @@
 /*  arch/sparc64/kernel/process.c
  *
- *  Copyright (C) 1995, 1996 David S. Miller (davem@caip.rutgers.edu)
+ *  Copyright (C) 1995, 1996, 2008 David S. Miller (davem@davemloft.net)
  *  Copyright (C) 1996       Eddie C. Dost   (ecd@skynet.be)
  *  Copyright (C) 1997, 1998 Jakub Jelinek   (jj@sunsite.mff.cuni.cz)
  */
@@ -30,6 +30,7 @@
 #include <linux/init.h>
 #include <linux/cpu.h>
 #include <linux/elfcore.h>
+#include <linux/sysrq.h>
 
 #include <asm/oplib.h>
 #include <asm/uaccess.h>
@@ -49,6 +50,8 @@
 #include <asm/sstate.h>
 #include <asm/reboot.h>
 #include <asm/syscalls.h>
+#include <asm/irq_regs.h>
+#include <asm/smp.h>
 
 /* #define VERBOSE_SHOWREGS */
 
@@ -298,6 +301,118 @@ void show_regs(struct pt_regs *regs)
 #endif
 }
 
+#ifdef CONFIG_MAGIC_SYSRQ
+struct global_reg_snapshot global_reg_snapshot[NR_CPUS];
+static DEFINE_SPINLOCK(global_reg_snapshot_lock);
+
+static void __global_reg_self(struct thread_info *tp, struct pt_regs *regs,
+			      int this_cpu)
+{
+	flushw_all();
+
+	global_reg_snapshot[this_cpu].tstate = regs->tstate;
+	global_reg_snapshot[this_cpu].tpc = regs->tpc;
+	global_reg_snapshot[this_cpu].tnpc = regs->tnpc;
+	global_reg_snapshot[this_cpu].o7 = regs->u_regs[UREG_I7];
+
+	if (regs->tstate & TSTATE_PRIV) {
+		struct reg_window *rw;
+
+		rw = (struct reg_window *)
+			(regs->u_regs[UREG_FP] + STACK_BIAS);
+		global_reg_snapshot[this_cpu].i7 = rw->ins[6];
+	} else
+		global_reg_snapshot[this_cpu].i7 = 0;
+
+	global_reg_snapshot[this_cpu].thread = tp;
+}
+
+/* In order to avoid hangs we do not try to synchronize with the
+ * global register dump client cpus.  The last store they make is to
+ * the thread pointer, so do a short poll waiting for that to become
+ * non-NULL.
+ */
+static void __global_reg_poll(struct global_reg_snapshot *gp)
+{
+	int limit = 0;
+
+	while (!gp->thread && ++limit < 100) {
+		barrier();
+		udelay(1);
+	}
+}
+
+static void sysrq_handle_globreg(int key, struct tty_struct *tty)
+{
+	struct thread_info *tp = current_thread_info();
+	struct pt_regs *regs = get_irq_regs();
+#ifdef CONFIG_KALLSYMS
+	char buffer[KSYM_SYMBOL_LEN];
+#endif
+	unsigned long flags;
+	int this_cpu, cpu;
+
+	if (!regs)
+		regs = tp->kregs;
+
+	spin_lock_irqsave(&global_reg_snapshot_lock, flags);
+
+	memset(global_reg_snapshot, 0, sizeof(global_reg_snapshot));
+
+	this_cpu = raw_smp_processor_id();
+
+	__global_reg_self(tp, regs, this_cpu);
+
+	smp_fetch_global_regs();
+
+	for_each_online_cpu(cpu) {
+		struct global_reg_snapshot *gp = &global_reg_snapshot[cpu];
+		struct thread_info *tp;
+
+		__global_reg_poll(gp);
+
+		tp = gp->thread;
+		printk("%c CPU[%3d]: TSTATE[%016lx] TPC[%016lx] TNPC[%016lx] TASK[%s:%d]\n",
+		       (cpu == this_cpu ? '*' : ' '), cpu,
+		       gp->tstate, gp->tpc, gp->tnpc,
+		       ((tp && tp->task) ? tp->task->comm : "NULL"),
+		       ((tp && tp->task) ? tp->task->pid : -1));
+#ifdef CONFIG_KALLSYMS
+		if (gp->tstate & TSTATE_PRIV) {
+			sprint_symbol(buffer, gp->tpc);
+			printk("             TPC[%s] ", buffer);
+			sprint_symbol(buffer, gp->o7);
+			printk("O7[%s] ", buffer);
+			sprint_symbol(buffer, gp->i7);
+			printk("I7[%s]\n", buffer);
+		} else
+#endif
+		{
+			printk("             TPC[%lx] O7[%lx] I7[%lx]\n",
+			       gp->tpc, gp->o7, gp->i7);
+		}
+	}
+
+	memset(global_reg_snapshot, 0, sizeof(global_reg_snapshot));
+
+	spin_unlock_irqrestore(&global_reg_snapshot_lock, flags);
+}
+
+static struct sysrq_key_op sparc_globalreg_op = {
+	.handler	= sysrq_handle_globreg,
+	.help_msg	= "Globalregs",
+	.action_msg	= "Show Global CPU Regs",
+};
+
+static int __init sparc_globreg_init(void)
+{
+	return register_sysrq_key('y', &sparc_globalreg_op);
+}
+
+core_initcall(sparc_globreg_init);
+
+#endif
+
 unsigned long thread_saved_pc(struct task_struct *tsk)
 {
 	struct thread_info *ti = task_thread_info(tsk);

arch/sparc64/kernel/rtrap.S

@@ -1,4 +1,4 @@
-/* $Id: rtrap.S,v 1.61 2002/02/09 19:49:31 davem Exp $
+/*
  * rtrap.S: Preparing for return from trap on Sparc V9.
  *
  * Copyright (C) 1997,1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz)

arch/sparc64/kernel/sbus.c

@@ -1,4 +1,4 @@
-/* $Id: sbus.c,v 1.19 2002/01/23 11:27:32 davem Exp $
+/*
  * sbus.c: UltraSparc SBUS controller support.
  *
  * Copyright (C) 1999 David S. Miller (davem@redhat.com)

arch/sparc64/kernel/setup.c

@@ -1,4 +1,4 @@
-/*  $Id: setup.c,v 1.72 2002/02/09 19:49:30 davem Exp $
+/*
  *  linux/arch/sparc64/kernel/setup.c
  *
  *  Copyright (C) 1995,1996  David S. Miller (davem@caip.rutgers.edu)

arch/sparc64/kernel/signal.c

@@ -1,4 +1,4 @@
-/*  $Id: signal.c,v 1.60 2002/02/09 19:49:31 davem Exp $
+/*
  *  arch/sparc64/kernel/signal.c
  *
  *  Copyright (C) 1991, 1992  Linus Torvalds

arch/sparc64/kernel/smp.c

@@ -900,6 +900,9 @@ extern unsigned long xcall_flush_tlb_mm;
 extern unsigned long xcall_flush_tlb_pending;
 extern unsigned long xcall_flush_tlb_kernel_range;
 extern unsigned long xcall_report_regs;
+#ifdef CONFIG_MAGIC_SYSRQ
+extern unsigned long xcall_fetch_glob_regs;
+#endif
 extern unsigned long xcall_receive_signal;
 extern unsigned long xcall_new_mmu_context_version;
 #ifdef CONFIG_KGDB
@@ -1080,6 +1083,13 @@ void smp_report_regs(void)
 	smp_cross_call(&xcall_report_regs, 0, 0, 0);
 }
 
+#ifdef CONFIG_MAGIC_SYSRQ
+void smp_fetch_global_regs(void)
+{
+	smp_cross_call(&xcall_fetch_glob_regs, 0, 0, 0);
+}
+#endif
+
 /* We know that the window frames of the user have been flushed
  * to the stack before we get here because all callers of us
  * are flush_tlb_*() routines, and these run after flush_cache_*()

arch/sparc64/kernel/starfire.c

@@ -1,4 +1,4 @@
-/* $Id: starfire.c,v 1.10 2001/04/14 21:13:45 davem Exp $
+/*
  * starfire.c: Starfire/E10000 support.
  *
  * Copyright (C) 1998 David S. Miller (davem@redhat.com)

arch/sparc64/kernel/sys32.S

@@ -1,4 +1,4 @@
-/* $Id: sys32.S,v 1.12 2000/03/24 04:17:37 davem Exp $
+/*
  * sys32.S: I-cache tricks for 32-bit compatibility layer simple
  *          conversions.
  *

arch/sparc64/kernel/trampoline.S

@@ -1,4 +1,4 @@
-/* $Id: trampoline.S,v 1.26 2002/02/09 19:49:30 davem Exp $
+/*
  * trampoline.S: Jump start slave processors on sparc64.
  *
  * Copyright (C) 1997 David S. Miller (davem@caip.rutgers.edu)

arch/sparc64/kernel/unaligned.c

@@ -1,4 +1,4 @@
-/* $Id: unaligned.c,v 1.24 2002/02/09 19:49:31 davem Exp $
+/*
  * unaligned.c: Unaligned load/store trap handling with special
  *              cases for the kernel to do them more quickly.
  *

arch/sparc64/lib/PeeCeeI.c

@@ -1,4 +1,4 @@
-/* $Id: PeeCeeI.c,v 1.4 1999/09/06 01:17:35 davem Exp $
+/*
  * PeeCeeI.c: The emerging standard...
  *
  * Copyright (C) 1997 David S. Miller (davem@caip.rutgers.edu)

arch/sparc64/lib/VISsave.S

@@ -1,4 +1,4 @@
-/* $Id: VISsave.S,v 1.6 2002/02/09 19:49:30 davem Exp $
+/*
  * VISsave.S: Code for saving FPU register state for
  *            VIS routines. One should not call this directly,
  *            but use macros provided in <asm/visasm.h>.

arch/sparc64/lib/memcmp.S

@@ -1,4 +1,4 @@
-/* $Id: memcmp.S,v 1.3 2000/03/23 07:51:08 davem Exp $
+/*
  * Sparc64 optimized memcmp code.
  *
  * Copyright (C) 1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz)

arch/sparc64/lib/memscan.S

@@ -1,4 +1,4 @@
-/* $Id: memscan.S,v 1.3 2000/01/31 04:59:10 davem Exp $
+/*
  * memscan.S: Optimized memscan for Sparc64.
  *
  * Copyright (C) 1997,1998 Jakub Jelinek (jj@ultra.linux.cz)

arch/sparc64/lib/strncmp.S

@@ -1,4 +1,4 @@
-/* $Id: strncmp.S,v 1.2 1997/03/11 17:51:44 jj Exp $
+/*
  * Sparc64 optimized strncmp code.
  *
  * Copyright (C) 1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz)

arch/sparc64/lib/strncpy_from_user.S

@@ -1,4 +1,4 @@
-/* $Id: strncpy_from_user.S,v 1.6 1999/05/25 16:53:05 jj Exp $
+/*
  * strncpy_from_user.S: Sparc64 strncpy from userspace.
  *
  *  Copyright (C) 1997, 1999 Jakub Jelinek (jj@ultra.linux.cz)

arch/sparc64/math-emu/math.c

@@ -1,4 +1,4 @@
-/* $Id: math.c,v 1.11 1999/12/20 05:02:25 davem Exp $
+/*
  * arch/sparc64/math-emu/math.c
  *
  * Copyright (C) 1997,1999 Jakub Jelinek (jj@ultra.linux.cz)

arch/sparc64/math-emu/sfp-util.h

@@ -1,4 +1,4 @@
-/* $Id: sfp-util.h,v 1.5 2001/06/10 06:48:46 davem Exp $
+/*
  * arch/sparc64/math-emu/sfp-util.h
  *
  * Copyright (C) 1999 Jakub Jelinek (jj@ultra.linux.cz)

arch/sparc64/mm/Makefile

@@ -1,4 +1,3 @@
-# $Id: Makefile,v 1.8 2000/12/14 22:57:25 davem Exp $
 # Makefile for the linux Sparc64-specific parts of the memory manager.
 #
 

arch/sparc64/mm/fault.c

@@ -1,4 +1,4 @@
-/* $Id: fault.c,v 1.59 2002/02/09 19:49:31 davem Exp $
+/*
  * arch/sparc64/mm/fault.c: Page fault handlers for the 64-bit Sparc.
  *
  * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu)

arch/sparc64/mm/generic.c

@@ -1,4 +1,4 @@
-/* $Id: generic.c,v 1.18 2001/12/21 04:56:15 davem Exp $
+/*
  * generic.c: Generic Sparc mm routines that are not dependent upon
  *            MMU type but are Sparc specific.
  *

arch/sparc64/mm/init.c

@@ -1,4 +1,4 @@
-/*  $Id: init.c,v 1.209 2002/02/09 19:49:31 davem Exp $
+/*
  *  arch/sparc64/mm/init.c
  *
  *  Copyright (C) 1996-1999 David S. Miller (davem@caip.rutgers.edu)

arch/sparc64/mm/ultra.S

@@ -1,7 +1,7 @@
-/* $Id: ultra.S,v 1.72 2002/02/09 19:49:31 davem Exp $
+/*
  * ultra.S: Don't expand these all over the place...
  *
- * Copyright (C) 1997, 2000 David S. Miller (davem@redhat.com)
+ * Copyright (C) 1997, 2000, 2008 David S. Miller (davem@davemloft.net)
  */
 
 #include <asm/asi.h>
@@ -15,6 +15,7 @@
 #include <asm/thread_info.h>
 #include <asm/cacheflush.h>
 #include <asm/hypervisor.h>
+#include <asm/cpudata.h>
 
 	/* Basically, most of the Spitfire vs. Cheetah madness
 	 * has to do with the fact that Cheetah does not support
@@ -514,6 +515,32 @@ xcall_report_regs:
 	b		rtrap_xcall
 	 ldx		[%sp + PTREGS_OFF + PT_V9_TSTATE], %l1
 
+#ifdef CONFIG_MAGIC_SYSRQ
+	.globl		xcall_fetch_glob_regs
+xcall_fetch_glob_regs:
+	sethi		%hi(global_reg_snapshot), %g1
+	or		%g1, %lo(global_reg_snapshot), %g1
+	__GET_CPUID(%g2)
+	sllx		%g2, 6, %g3
+	add		%g1, %g3, %g1
+	rdpr		%tstate, %g7
+	stx		%g7, [%g1 + GR_SNAP_TSTATE]
+	rdpr		%tpc, %g7
+	stx		%g7, [%g1 + GR_SNAP_TPC]
+	rdpr		%tnpc, %g7
+	stx		%g7, [%g1 + GR_SNAP_TNPC]
+	stx		%o7, [%g1 + GR_SNAP_O7]
+	stx		%i7, [%g1 + GR_SNAP_I7]
+	sethi		%hi(trap_block), %g7
+	or		%g7, %lo(trap_block), %g7
+	sllx		%g2, TRAP_BLOCK_SZ_SHIFT, %g2
+	add		%g7, %g2, %g7
+	ldx		[%g7 + TRAP_PER_CPU_THREAD], %g3
+	membar		#StoreStore
+	stx		%g3, [%g1 + GR_SNAP_THREAD]
+	retry
+#endif /* CONFIG_MAGIC_SYSRQ */
+
 #ifdef DCACHE_ALIASING_POSSIBLE
 	.align		32
 	.globl		xcall_flush_dcache_page_cheetah

arch/sparc64/prom/Makefile

@@ -1,4 +1,3 @@
-# $Id: Makefile,v 1.7 2000/12/14 22:57:25 davem Exp $
 # Makefile for the Sun Boot PROM interface library under
 # Linux.
 #

arch/sparc64/prom/bootstr.c

@@ -1,4 +1,4 @@
-/* $Id: bootstr.c,v 1.6 1999/08/31 06:55:01 davem Exp $
+/*
  * bootstr.c:  Boot string/argument acquisition from the PROM.
  *
  * Copyright(C) 1995 David S. Miller (davem@caip.rutgers.edu)

arch/sparc64/prom/devops.c

@@ -1,4 +1,4 @@
-/* $Id: devops.c,v 1.3 1997/10/29 07:43:28 ecd Exp $
+/*
  * devops.c:  Device operations using the PROM.
  *
  * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)

arch/sparc64/prom/init.c

@@ -1,4 +1,4 @@
-/* $Id: init.c,v 1.10 1999/09/21 14:35:59 davem Exp $
+/*
  * init.c:  Initialize internal variables used by the PROM
  *          library functions.
  *

arch/sparc64/prom/misc.c

@@ -1,4 +1,4 @@
-/* $Id: misc.c,v 1.20 2001/09/21 03:17:07 kanoj Exp $
+/*
  * misc.c:  Miscellaneous prom functions that don't belong
  *          anywhere else.
  *

arch/sparc64/prom/p1275.c

@@ -1,4 +1,4 @@
-/* $Id: p1275.c,v 1.22 2001/10/18 09:40:00 davem Exp $
+/*
  * p1275.c: Sun IEEE 1275 PROM low level interface routines
  *
  * Copyright (C) 1996,1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz)

arch/sparc64/prom/tree.c

@@ -1,4 +1,4 @@
-/* $Id: tree.c,v 1.10 1998/01/10 22:39:00 ecd Exp $
+/*
  * tree.c: Basic device tree traversal/scanning for the Linux
  *         prom library.
  *

drivers/char/sysrq.c

@@ -402,6 +402,7 @@ static struct sysrq_key_op *sysrq_key_table[36] = {
 	&sysrq_showstate_blocked_op,	/* w */
 	/* x: May be registered on ppc/powerpc for xmon */
 	NULL,				/* x */
+	/* y: May be registered on sparc64 for global register dump */
 	NULL,				/* y */
 	NULL				/* z */
 };

include/asm-sparc/asi.h

@@ -1,4 +1,3 @@
-/* $Id: asi.h,v 1.18 1998/03/09 14:04:46 jj Exp $ */
 #ifndef _SPARC_ASI_H
 #define _SPARC_ASI_H
 

include/asm-sparc/auxio.h

@@ -1,4 +1,4 @@
-/* $Id: auxio.h,v 1.18 1997/11/07 15:01:45 jj Exp $
+/*
  * auxio.h:  Definitions and code for the Auxiliary I/O register.
  *
  * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)