Merge /spare/repo/linux-2.6/

21 files changed, 523 insertions, 808 deletions

diff --git a/arch/sparc64/kernel/auxio.c b/arch/sparc64/kernel/auxio.c
index a0716ccc2f4..8852c20c8d9 100644
--- a/arch/sparc64/kernel/auxio.c
+++ b/arch/sparc64/kernel/auxio.c
@@ -16,7 +16,7 @@
 #include <asm/ebus.h>
 #include <asm/auxio.h>
 
-/* This cannot be static, as it is referenced in entry.S */
+/* This cannot be static, as it is referenced in irq.c */
 void __iomem *auxio_register = NULL;
 
 enum auxio_type {
diff --git a/arch/sparc64/kernel/dtlb_backend.S b/arch/sparc64/kernel/dtlb_backend.S
index b73a3c85877..538522848ad 100644
--- a/arch/sparc64/kernel/dtlb_backend.S
+++ b/arch/sparc64/kernel/dtlb_backend.S
@@ -16,7 +16,7 @@
 #elif PAGE_SHIFT == 19
 #define SZ_BITS		_PAGE_SZ512K
 #elif PAGE_SHIFT == 22
-#define SZ_BITS		_PAGE_SZ4M
+#define SZ_BITS		_PAGE_SZ4MB
 #endif
 
 #define VALID_SZ_BITS	(_PAGE_VALID | SZ_BITS)
diff --git a/arch/sparc64/kernel/entry.S b/arch/sparc64/kernel/entry.S
index a47f2d0b1a2..88332f00094 100644
--- a/arch/sparc64/kernel/entry.S
+++ b/arch/sparc64/kernel/entry.S
@@ -22,8 +22,6 @@
 #include <asm/estate.h>
 #include <asm/auxio.h>
 
-/* #define SYSCALL_TRACING	1 */
-
 #define curptr      g6
 
 #define NR_SYSCALLS 284      /* Each OS is different... */
@@ -271,8 +269,9 @@ cplus_fptrap_insn_1:
 	fmuld		%f0, %f2, %f26
 	faddd		%f0, %f2, %f28
 	fmuld		%f0, %f2, %f30
+	membar		#Sync
 	b,pt		%xcc, fpdis_exit
-	 membar		#Sync
+	 nop
 2:	andcc		%g5, FPRS_DU, %g0
 	bne,pt		%icc, 3f
 	 fzero		%f32
@@ -301,8 +300,9 @@ cplus_fptrap_insn_2:
 	fmuld		%f32, %f34, %f58
 	faddd		%f32, %f34, %f60
 	fmuld		%f32, %f34, %f62
+	membar		#Sync
 	ba,pt		%xcc, fpdis_exit
-	 membar		#Sync
+	 nop
 3:	mov		SECONDARY_CONTEXT, %g3
 	add		%g6, TI_FPREGS, %g1
 	ldxa		[%g3] ASI_DMMU, %g5
@@ -551,13 +551,11 @@ do_ivec:
 	sllx		%g3, 5, %g3
 	or		%g2, %lo(ivector_table), %g2
 	add		%g2, %g3, %g3
-	ldx		[%g3 + 0x08], %g2	/* irq_info */
 	ldub		[%g3 + 0x04], %g4	/* pil */
-	brz,pn		%g2, do_ivec_spurious
-	 mov		1, %g2
-
+	mov		1, %g2
 	sllx		%g2, %g4, %g2
 	sllx		%g4, 2, %g4
+
 	lduw		[%g6 + %g4], %g5	/* g5 = irq_work(cpu, pil) */
 	stw		%g5, [%g3 + 0x00]	/* bucket->irq_chain = g5 */
 	stw		%g3, [%g6 + %g4]	/* irq_work(cpu, pil) = bucket */
@@ -565,9 +563,9 @@ do_ivec:
 	retry
 do_ivec_xcall:
 	mov		0x50, %g1
-
 	ldxa		[%g1 + %g0] ASI_INTR_R, %g1
 	srl		%g3, 0, %g3
+
 	mov		0x60, %g7
 	ldxa		[%g7 + %g0] ASI_INTR_R, %g7
 	stxa		%g0, [%g0] ASI_INTR_RECEIVE
@@ -579,19 +577,6 @@ do_ivec_xcall:
 1:	jmpl		%g3, %g0
 	 nop
 
-do_ivec_spurious:
-	stw		%g3, [%g6 + 0x00]	/* irq_work(cpu, 0) = bucket */
-	rdpr		%pstate, %g5
-
-	wrpr		%g5, PSTATE_IG | PSTATE_AG, %pstate
-	sethi		%hi(109f), %g7
-	ba,pt		%xcc, etrap
-109:	 or		%g7, %lo(109b), %g7
-	call		catch_disabled_ivec
-	 add		%sp, PTREGS_OFF, %o0
-	ba,pt		%xcc, rtrap
-	 clr		%l6
-
 	.globl		save_alternate_globals
 save_alternate_globals: /* %o0 = save_area */
 	rdpr		%pstate, %o5
@@ -699,116 +684,6 @@ utrap_ill:
 	ba,pt		%xcc, rtrap
 	 clr		%l6
 
-#ifdef CONFIG_BLK_DEV_FD
-	.globl		floppy_hardint
-floppy_hardint:
-	wr		%g0, (1 << 11), %clear_softint
-	sethi		%hi(doing_pdma), %g1
-	ld		[%g1 + %lo(doing_pdma)], %g2
-	brz,pn		%g2, floppy_dosoftint
-	 sethi		%hi(fdc_status), %g3
-	ldx		[%g3 + %lo(fdc_status)], %g3
-	sethi		%hi(pdma_vaddr), %g5
-	ldx		[%g5 + %lo(pdma_vaddr)], %g4
-	sethi		%hi(pdma_size), %g5
-	ldx		[%g5 + %lo(pdma_size)], %g5
-
-next_byte:
-	lduba		[%g3] ASI_PHYS_BYPASS_EC_E, %g7
-	andcc		%g7, 0x80, %g0
-	be,pn		%icc, floppy_fifo_emptied
-	 andcc		%g7, 0x20, %g0
-	be,pn		%icc, floppy_overrun
-	 andcc		%g7, 0x40, %g0
-	be,pn		%icc, floppy_write
-	 sub		%g5, 1, %g5
-
-	inc		%g3
-	lduba		[%g3] ASI_PHYS_BYPASS_EC_E, %g7
-	dec		%g3
-	orcc		%g0, %g5, %g0
-	stb		%g7, [%g4]
-	bne,pn		%xcc, next_byte
-	 add		%g4, 1, %g4
-
-	b,pt		%xcc, floppy_tdone
-	 nop
-
-floppy_write:
-	ldub		[%g4], %g7
-	orcc		%g0, %g5, %g0
-	inc		%g3
-	stba		%g7, [%g3] ASI_PHYS_BYPASS_EC_E
-	dec		%g3
-	bne,pn		%xcc, next_byte
-	 add		%g4, 1, %g4
-
-floppy_tdone:
-	sethi		%hi(pdma_vaddr), %g1
-	stx		%g4, [%g1 + %lo(pdma_vaddr)]
-	sethi		%hi(pdma_size), %g1
-	stx		%g5, [%g1 + %lo(pdma_size)]
-	sethi		%hi(auxio_register), %g1
-	ldx		[%g1 + %lo(auxio_register)], %g7
-	lduba		[%g7] ASI_PHYS_BYPASS_EC_E, %g5
-	or		%g5, AUXIO_AUX1_FTCNT, %g5
-/*	andn		%g5, AUXIO_AUX1_MASK, %g5 */
-	stba		%g5, [%g7] ASI_PHYS_BYPASS_EC_E
-	andn		%g5, AUXIO_AUX1_FTCNT, %g5
-/*	andn		%g5, AUXIO_AUX1_MASK, %g5 */
-
-	nop; nop;  nop; nop;  nop; nop;
-	nop; nop;  nop; nop;  nop; nop;
-
-	stba		%g5, [%g7] ASI_PHYS_BYPASS_EC_E
-	sethi		%hi(doing_pdma), %g1
-	b,pt		%xcc, floppy_dosoftint
-	 st		%g0, [%g1 + %lo(doing_pdma)]
-
-floppy_fifo_emptied:
-	sethi		%hi(pdma_vaddr), %g1
-	stx		%g4, [%g1 + %lo(pdma_vaddr)]
-	sethi		%hi(pdma_size), %g1
-	stx		%g5, [%g1 + %lo(pdma_size)]
-	sethi		%hi(irq_action), %g1
-	or		%g1, %lo(irq_action), %g1
-	ldx		[%g1 + (11 << 3)], %g3		! irqaction[floppy_irq]
-	ldx		[%g3 + 0x08], %g4		! action->flags>>48==ino
-	sethi		%hi(ivector_table), %g3
-	srlx		%g4, 48, %g4
-	or		%g3, %lo(ivector_table), %g3
-	sllx		%g4, 5, %g4
-	ldx		[%g3 + %g4], %g4		! &ivector_table[ino]
-	ldx		[%g4 + 0x10], %g4		! bucket->iclr
-	stwa		%g0, [%g4] ASI_PHYS_BYPASS_EC_E	! ICLR_IDLE
-	membar		#Sync				! probably not needed...
-	retry
-
-floppy_overrun:
-	sethi		%hi(pdma_vaddr), %g1
-	stx		%g4, [%g1 + %lo(pdma_vaddr)]
-	sethi		%hi(pdma_size), %g1
-	stx		%g5, [%g1 + %lo(pdma_size)]
-	sethi		%hi(doing_pdma), %g1
-	st		%g0, [%g1 + %lo(doing_pdma)]
-
-floppy_dosoftint:
-	rdpr		%pil, %g2
-	wrpr		%g0, 15, %pil
-	sethi		%hi(109f), %g7
-	b,pt		%xcc, etrap_irq
-109:	 or		%g7, %lo(109b), %g7
-
-	mov		11, %o0
-	mov		0, %o1
-	call		sparc_floppy_irq
-	 add		%sp, PTREGS_OFF, %o2
-
-	b,pt		%xcc, rtrap_irq
-	 nop
-
-#endif /* CONFIG_BLK_DEV_FD */
-
 	/* XXX Here is stuff we still need to write... -DaveM XXX */
 	.globl		netbsd_syscall
 netbsd_syscall:
@@ -1677,11 +1552,12 @@ sys_ptrace:	add		%sp, PTREGS_OFF, %o0
 		nop
 		.align		32
 1:		ldx		[%curptr + TI_FLAGS], %l5
-		andcc		%l5, _TIF_SYSCALL_TRACE, %g0
+		andcc		%l5, (_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT), %g0
 		be,pt		%icc, rtrap
 		 clr		%l6
+		add		%sp, PTREGS_OFF, %o0
 		call		syscall_trace
-		 nop
+		 mov		1, %o1
 
 		ba,pt		%xcc, rtrap
 		 clr		%l6
@@ -1724,11 +1600,11 @@ sys_clone:	flushw
 		ba,pt		%xcc, sparc_do_fork
 		 add		%sp, PTREGS_OFF, %o2
 ret_from_syscall:
-		/* Clear SPARC_FLAG_NEWCHILD, switch_to leaves thread.flags in
-		 * %o7 for us.  Check performance counter stuff too.
+		/* Clear current_thread_info()->new_child, and
+		 * check performance counter stuff too.
 		 */
-		andn		%o7, _TIF_NEWCHILD, %l0
-		stx		%l0, [%g6 + TI_FLAGS]
+		stb		%g0, [%g6 + TI_NEW_CHILD]
+		ldx		[%g6 + TI_FLAGS], %l0
 		call		schedule_tail
 		 mov		%g7, %o0
 		andcc		%l0, _TIF_PERFCTR, %g0
@@ -1765,18 +1641,20 @@ linux_sparc_ni_syscall:
 	 or		%l7, %lo(sys_ni_syscall), %l7
 
 linux_syscall_trace32:
+	add		%sp, PTREGS_OFF, %o0
 	call		syscall_trace
-	 nop
+	 clr		%o1
 	srl		%i0, 0, %o0
-	mov		%i4, %o4
+	srl		%i4, 0, %o4
 	srl		%i1, 0, %o1
 	srl		%i2, 0, %o2
 	b,pt		%xcc, 2f
 	 srl		%i3, 0, %o3
 
 linux_syscall_trace:
+	add		%sp, PTREGS_OFF, %o0
 	call		syscall_trace
-	 nop
+	 clr		%o1
 	mov		%i0, %o0
 	mov		%i1, %o1
 	mov		%i2, %o2
@@ -1794,11 +1672,6 @@ linux_sparc_syscall32:
 	bgeu,pn		%xcc, linux_sparc_ni_syscall		! CTI
 	 srl		%i0, 0, %o0				! IEU0
 	sll		%g1, 2, %l4				! IEU0	Group
-#ifdef SYSCALL_TRACING
-	call		syscall_trace_entry
-	 add		%sp, PTREGS_OFF, %o0
-	srl		%i0, 0, %o0
-#endif
 	srl		%i4, 0, %o4				! IEU1
 	lduw		[%l7 + %l4], %l7			! Load
 	srl		%i1, 0, %o1				! IEU0	Group
@@ -1806,7 +1679,7 @@ linux_sparc_syscall32:
 
 	srl		%i5, 0, %o5				! IEU1
 	srl		%i2, 0, %o2				! IEU0	Group
-	andcc		%l0, _TIF_SYSCALL_TRACE, %g0		! IEU0	Group
+	andcc		%l0, (_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT), %g0
 	bne,pn		%icc, linux_syscall_trace32		! CTI
 	 mov		%i0, %l5				! IEU1
 	call		%l7					! CTI	Group brk forced
@@ -1822,11 +1695,6 @@ linux_sparc_syscall:
 	bgeu,pn		%xcc, linux_sparc_ni_syscall		! CTI
 	 mov		%i0, %o0				! IEU0
 	sll		%g1, 2, %l4				! IEU0	Group
-#ifdef SYSCALL_TRACING
-	call		syscall_trace_entry
-	 add		%sp, PTREGS_OFF, %o0
-	mov		%i0, %o0
-#endif
 	mov		%i1, %o1				! IEU1
 	lduw		[%l7 + %l4], %l7			! Load
 4:	mov		%i2, %o2				! IEU0	Group
@@ -1834,7 +1702,7 @@ linux_sparc_syscall:
 
 	mov		%i3, %o3				! IEU1
 	mov		%i4, %o4				! IEU0	Group
-	andcc		%l0, _TIF_SYSCALL_TRACE, %g0		! IEU1	Group+1 bubble
+	andcc		%l0, (_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT), %g0
 	bne,pn		%icc, linux_syscall_trace		! CTI	Group
 	 mov		%i0, %l5				! IEU0
 2:	call		%l7					! CTI	Group brk forced
@@ -1843,12 +1711,6 @@ linux_sparc_syscall:
 
 3:	stx		%o0, [%sp + PTREGS_OFF + PT_V9_I0]
 ret_sys_call:
-#ifdef SYSCALL_TRACING
-	mov		%o0, %o1
-	call		syscall_trace_exit
-	 add		%sp, PTREGS_OFF, %o0
-	mov		%o1, %o0
-#endif
 	ldx		[%sp + PTREGS_OFF + PT_V9_TSTATE], %g3
 	ldx		[%sp + PTREGS_OFF + PT_V9_TNPC], %l1 ! pc = npc
 	sra		%o0, 0, %o0
@@ -1858,17 +1720,16 @@ ret_sys_call:
 	/* Check if force_successful_syscall_return()
 	 * was invoked.
 	 */
-	ldx		[%curptr + TI_FLAGS], %l0
-	andcc		%l0, _TIF_SYSCALL_SUCCESS, %g0
-	be,pt		%icc, 1f
-	 andn		%l0, _TIF_SYSCALL_SUCCESS, %l0
+	ldub		[%curptr + TI_SYS_NOERROR], %l0
+	brz,pt		%l0, 1f
+	 nop
 	ba,pt		%xcc, 80f
-	 stx		%l0, [%curptr + TI_FLAGS]
+	 stb		%g0, [%curptr + TI_SYS_NOERROR]
 
 1:
 	cmp		%o0, -ERESTART_RESTARTBLOCK
 	bgeu,pn		%xcc, 1f
-	 andcc		%l0, _TIF_SYSCALL_TRACE, %l6	
+	 andcc		%l0, (_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT), %l6
 80:
 	/* System call success, clear Carry condition code. */
 	andn		%g3, %g2, %g3
@@ -1883,7 +1744,7 @@ ret_sys_call:
 	/* System call failure, set Carry condition code.
 	 * Also, get abs(errno) to return to the process.
 	 */
-	andcc		%l0, _TIF_SYSCALL_TRACE, %l6	
+	andcc		%l0, (_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT), %l6	
 	sub		%g0, %o0, %o0
 	or		%g3, %g2, %g3
 	stx		%o0, [%sp + PTREGS_OFF + PT_V9_I0]
@@ -1896,8 +1757,9 @@ ret_sys_call:
 	b,pt		%xcc, rtrap
 	 stx		%l2, [%sp + PTREGS_OFF + PT_V9_TNPC]
 linux_syscall_trace2:
+	add		%sp, PTREGS_OFF, %o0
 	call		syscall_trace
-	 nop
+	 mov		1, %o1
 	stx		%l1, [%sp + PTREGS_OFF + PT_V9_TPC]
 	ba,pt		%xcc, rtrap
 	 stx		%l2, [%sp + PTREGS_OFF + PT_V9_TNPC]
diff --git a/arch/sparc64/kernel/irq.c b/arch/sparc64/kernel/irq.c
index 4dcb8af9409..c9b69167632 100644
--- a/arch/sparc64/kernel/irq.c
+++ b/arch/sparc64/kernel/irq.c
@@ -37,6 +37,7 @@
 #include <asm/uaccess.h>
 #include <asm/cache.h>
 #include <asm/cpudata.h>
+#include <asm/auxio.h>
 
 #ifdef CONFIG_SMP
 static void distribute_irqs(void);
@@ -70,31 +71,7 @@ struct irq_work_struct {
 struct irq_work_struct __irq_work[NR_CPUS];
 #define irq_work(__cpu, __pil)	&(__irq_work[(__cpu)].irq_worklists[(__pil)])
 
-#ifdef CONFIG_PCI
-/* This is a table of physical addresses used to deal with IBF_DMA_SYNC.
- * It is used for PCI only to synchronize DMA transfers with IRQ delivery
- * for devices behind busses other than APB on Sabre systems.
- *
- * Currently these physical addresses are just config space accesses
- * to the command register for that device.
- */
-unsigned long pci_dma_wsync;
-unsigned long dma_sync_reg_table[256];
-unsigned char dma_sync_reg_table_entry = 0;
-#endif
-
-/* This is based upon code in the 32-bit Sparc kernel written mostly by
- * David Redman (djhr@tadpole.co.uk).
- */
-#define MAX_STATIC_ALLOC	4
-static struct irqaction static_irqaction[MAX_STATIC_ALLOC];
-static int static_irq_count;
-
-/* This is exported so that fast IRQ handlers can get at it... -DaveM */
-struct irqaction *irq_action[NR_IRQS+1] = {
-	  NULL, NULL, NULL, NULL, NULL, NULL , NULL, NULL,
-	  NULL, NULL, NULL, NULL, NULL, NULL , NULL, NULL
-};
+static struct irqaction *irq_action[NR_IRQS+1];
 
 /* This only synchronizes entities which modify IRQ handler
  * state and some selected user-level spots that want to
@@ -240,17 +217,22 @@ void disable_irq(unsigned int irq)
  * the CPU %tick register and not by some normal vectored interrupt
  * source.  To handle this special case, we use this dummy INO bucket.
  */
+static struct irq_desc pil0_dummy_desc;
 static struct ino_bucket pil0_dummy_bucket = {
-	0,	/* irq_chain */
-	0,	/* pil */
-	0,	/* pending */
-	0,	/* flags */
-	0,	/* __unused */
-	NULL,	/* irq_info */
-	0UL,	/* iclr */
-	0UL,	/* imap */
+	.irq_info	=	&pil0_dummy_desc,
 };
 
+static void build_irq_error(const char *msg, unsigned int ino, int pil, int inofixup,
+			    unsigned long iclr, unsigned long imap,
+			    struct ino_bucket *bucket)
+{
+	prom_printf("IRQ: INO %04x (%d:%016lx:%016lx) --> "
+		    "(%d:%d:%016lx:%016lx), halting...\n",
+		    ino, bucket->pil, bucket->iclr, bucket->imap,
+		    pil, inofixup, iclr, imap);
+	prom_halt();
+}
+
 unsigned int build_irq(int pil, int inofixup, unsigned long iclr, unsigned long imap)
 {
 	struct ino_bucket *bucket;
@@ -279,28 +261,35 @@ unsigned int build_irq(int pil, int inofixup, unsigned long iclr, unsigned long
 		prom_halt();
 	}
 
-	/* Ok, looks good, set it up.  Don't touch the irq_chain or
-	 * the pending flag.
-	 */
 	bucket = &ivector_table[ino];
-	if ((bucket->flags & IBF_ACTIVE) ||
-	    (bucket->irq_info != NULL)) {
-		/* This is a gross fatal error if it happens here. */
-		prom_printf("IRQ: Trying to reinit INO bucket, fatal error.\n");
-		prom_printf("IRQ: Request INO %04x (%d:%d:%016lx:%016lx)\n",
-			    ino, pil, inofixup, iclr, imap);
-		prom_printf("IRQ: Existing (%d:%016lx:%016lx)\n",
-			    bucket->pil, bucket->iclr, bucket->imap);
-		prom_printf("IRQ: Cannot continue, halting...\n");
+	if (bucket->flags & IBF_ACTIVE)
+		build_irq_error("IRQ: Trying to build active INO bucket.\n",
+				ino, pil, inofixup, iclr, imap, bucket);
+
+	if (bucket->irq_info) {
+		if (bucket->imap != imap || bucket->iclr != iclr)
+			build_irq_error("IRQ: Trying to reinit INO bucket.\n",
+					ino, pil, inofixup, iclr, imap, bucket);
+
+		goto out;
+	}
+
+	bucket->irq_info = kmalloc(sizeof(struct irq_desc), GFP_ATOMIC);
+	if (!bucket->irq_info) {
+		prom_printf("IRQ: Error, kmalloc(irq_desc) failed.\n");
 		prom_halt();
 	}
+	memset(bucket->irq_info, 0, sizeof(struct irq_desc));
+
+	/* Ok, looks good, set it up.  Don't touch the irq_chain or
+	 * the pending flag.
+	 */
 	bucket->imap  = imap;
 	bucket->iclr  = iclr;
 	bucket->pil   = pil;
 	bucket->flags = 0;
 
-	bucket->irq_info = NULL;
-
+out:
 	return __irq(bucket);
 }
 
@@ -318,26 +307,65 @@ static void atomic_bucket_insert(struct ino_bucket *bucket)
 	__asm__ __volatile__("wrpr %0, 0x0, %%pstate" : : "r" (pstate));
 }
 
+static int check_irq_sharing(int pil, unsigned long irqflags)
+{
+	struct irqaction *action, *tmp;
+
+	action = *(irq_action + pil);
+	if (action) {
+		if ((action->flags & SA_SHIRQ) && (irqflags & SA_SHIRQ)) {
+			for (tmp = action; tmp->next; tmp = tmp->next)
+				;
+		} else {
+			return -EBUSY;
+		}
+	}
+	return 0;
+}
+
+static void append_irq_action(int pil, struct irqaction *action)
+{
+	struct irqaction **pp = irq_action + pil;
+
+	while (*pp)
+		pp = &((*pp)->next);
+	*pp = action;
+}
+
+static struct irqaction *get_action_slot(struct ino_bucket *bucket)
+{
+	struct irq_desc *desc = bucket->irq_info;
+	int max_irq, i;
+
+	max_irq = 1;
+	if (bucket->flags & IBF_PCI)
+		max_irq = MAX_IRQ_DESC_ACTION;
+	for (i = 0; i < max_irq; i++) {
+		struct irqaction *p = &desc->action[i];
+		u32 mask = (1 << i);
+
+		if (desc->action_active_mask & mask)
+			continue;
+
+		desc->action_active_mask |= mask;
+		return p;
+	}
+	return NULL;
+}
+
 int request_irq(unsigned int irq, irqreturn_t (*handler)(int, void *, struct pt_regs *),
 		unsigned long irqflags, const char *name, void *dev_id)
 {
-	struct irqaction *action, *tmp = NULL;
+	struct irqaction *action;
 	struct ino_bucket *bucket = __bucket(irq);
 	unsigned long flags;
 	int pending = 0;
 
-	if ((bucket != &pil0_dummy_bucket) &&
-	    (bucket < &ivector_table[0] ||
-	     bucket >= &ivector_table[NUM_IVECS])) {
-		unsigned int *caller;
-
-		__asm__ __volatile__("mov %%i7, %0" : "=r" (caller));
-		printk(KERN_CRIT "request_irq: Old style IRQ registry attempt "
-		       "from %p, irq %08x.\n", caller, irq);
+	if (unlikely(!handler))
 		return -EINVAL;
-	}	
-	if (!handler)
-	    return -EINVAL;
+
+	if (unlikely(!bucket->irq_info))
+		return -ENODEV;
 
 	if ((bucket != &pil0_dummy_bucket) && (irqflags & SA_SAMPLE_RANDOM)) {
 		/*
@@ -355,93 +383,20 @@ int request_irq(unsigned int irq, irqreturn_t (*handler)(int, void *, struct pt_
 
 	spin_lock_irqsave(&irq_action_lock, flags);
 
-	action = *(bucket->pil + irq_action);
-	if (action) {
-		if ((action->flags & SA_SHIRQ) && (irqflags & SA_SHIRQ))
-			for (tmp = action; tmp->next; tmp = tmp->next)
-				;
-		else {
-			spin_unlock_irqrestore(&irq_action_lock, flags);
-			return -EBUSY;
-		}
-		action = NULL;		/* Or else! */
+	if (check_irq_sharing(bucket->pil, irqflags)) {
+		spin_unlock_irqrestore(&irq_action_lock, flags);
+		return -EBUSY;
 	}
 
-	/* If this is flagged as statically allocated then we use our
-	 * private struct which is never freed.
-	 */
-	if (irqflags & SA_STATIC_ALLOC) {
-	    if (static_irq_count < MAX_STATIC_ALLOC)
-		action = &static_irqaction[static_irq_count++];
-	    else
-		printk("Request for IRQ%d (%s) SA_STATIC_ALLOC failed "
-		       "using kmalloc\n", irq, name);
-	}	
-	if (action == NULL)
-	    action = (struct irqaction *)kmalloc(sizeof(struct irqaction),
-						 GFP_ATOMIC);
-	
+	action = get_action_slot(bucket);
 	if (!action) { 
 		spin_unlock_irqrestore(&irq_action_lock, flags);
 		return -ENOMEM;
 	}
 
-	if (bucket == &pil0_dummy_bucket) {
-		bucket->irq_info = action;
-		bucket->flags |= IBF_ACTIVE;
-	} else {
-		if ((bucket->flags & IBF_ACTIVE) != 0) {
-			void *orig = bucket->irq_info;
-			void **vector = NULL;
-
-			if ((bucket->flags & IBF_PCI) == 0) {
-				printk("IRQ: Trying to share non-PCI bucket.\n");
-				goto free_and_ebusy;
-			}
-			if ((bucket->flags & IBF_MULTI) == 0) {
-				vector = kmalloc(sizeof(void *) * 4, GFP_ATOMIC);
-				if (vector == NULL)
-					goto free_and_enomem;
-
-				/* We might have slept. */
-				if ((bucket->flags & IBF_MULTI) != 0) {
-					int ent;
-
-					kfree(vector);
-					vector = (void **)bucket->irq_info;
-					for(ent = 0; ent < 4; ent++) {
-						if (vector[ent] == NULL) {
-							vector[ent] = action;
-							break;
-						}
-					}
-					if (ent == 4)
-						goto free_and_ebusy;
-				} else {
-					vector[0] = orig;
-					vector[1] = action;
-					vector[2] = NULL;
-					vector[3] = NULL;
-					bucket->irq_info = vector;
-					bucket->flags |= IBF_MULTI;
-				}
-			} else {
-				int ent;
-
-				vector = (void **)orig;
-				for (ent = 0; ent < 4; ent++) {
-					if (vector[ent] == NULL) {
-						vector[ent] = action;
-						break;
-					}
-				}
-				if (ent == 4)
-					goto free_and_ebusy;
-			}
-		} else {
-			bucket->irq_info = action;
-			bucket->flags |= IBF_ACTIVE;
-		}
+	bucket->flags |= IBF_ACTIVE;
+	pending = 0;
+	if (bucket != &pil0_dummy_bucket) {
 		pending = bucket->pending;
 		if (pending)
 			bucket->pending = 0;
@@ -455,10 +410,7 @@ int request_irq(unsigned int irq, irqreturn_t (*handler)(int, void *, struct pt_
 	put_ino_in_irqaction(action, irq);
 	put_smpaff_in_irqaction(action, CPU_MASK_NONE);
 
-	if (tmp)
-		tmp->next = action;
-	else
-		*(bucket->pil + irq_action) = action;
+	append_irq_action(bucket->pil, action);
 
 	enable_irq(irq);
 
@@ -467,147 +419,103 @@ int request_irq(unsigned int irq, irqreturn_t (*handler)(int, void *, struct pt_
 		atomic_bucket_insert(bucket);
 		set_softint(1 << bucket->pil);
 	}
+
 	spin_unlock_irqrestore(&irq_action_lock, flags);
-	if ((bucket != &pil0_dummy_bucket) && (!(irqflags & SA_STATIC_ALLOC)))
+
+	if (bucket != &pil0_dummy_bucket)
 		register_irq_proc(__irq_ino(irq));
 
 #ifdef CONFIG_SMP
 	distribute_irqs();
 #endif
 	return 0;
-
-free_and_ebusy:
-	kfree(action);
-	spin_unlock_irqrestore(&irq_action_lock, flags);
-	return -EBUSY;
-
-free_and_enomem:
-	kfree(action);
-	spin_unlock_irqrestore(&irq_action_lock, flags);
-	return -ENOMEM;
 }
 
 EXPORT_SYMBOL(request_irq);
 
-void free_irq(unsigned int irq, void *dev_id)
+static struct irqaction *unlink_irq_action(unsigned int irq, void *dev_id)
 {
-	struct irqaction *action;
-	struct irqaction *tmp = NULL;
-	unsigned long flags;
-	struct ino_bucket *bucket = __bucket(irq), *bp;
-
-	if ((bucket != &pil0_dummy_bucket) &&
-	    (bucket < &ivector_table[0] ||
-	     bucket >= &ivector_table[NUM_IVECS])) {
-		unsigned int *caller;
+	struct ino_bucket *bucket = __bucket(irq);
+	struct irqaction *action, **pp;
 
-		__asm__ __volatile__("mov %%i7, %0" : "=r" (caller));
-		printk(KERN_CRIT "free_irq: Old style IRQ removal attempt "
-		       "from %p, irq %08x.\n", caller, irq);
-		return;
-	}
-	
-	spin_lock_irqsave(&irq_action_lock, flags);
+	pp = irq_action + bucket->pil;
+	action = *pp;
+	if (unlikely(!action))
+		return NULL;
 
-	action = *(bucket->pil + irq_action);
-	if (!action->handler) {
+	if (unlikely(!action->handler)) {
 		printk("Freeing free IRQ %d\n", bucket->pil);
-		return;
-	}
-	if (dev_id) {
-		for ( ; action; action = action->next) {
-			if (action->dev_id == dev_id)
-				break;
-			tmp = action;
-		}
-		if (!action) {
-			printk("Trying to free free shared IRQ %d\n", bucket->pil);
-			spin_unlock_irqrestore(&irq_action_lock, flags);
-			return;
-		}
-	} else if (action->flags & SA_SHIRQ) {
-		printk("Trying to free shared IRQ %d with NULL device ID\n", bucket->pil);
-		spin_unlock_irqrestore(&irq_action_lock, flags);
-		return;
+		return NULL;
 	}
 
-	if (action->flags & SA_STATIC_ALLOC) {
-		printk("Attempt to free statically allocated IRQ %d (%s)\n",
-		       bucket->pil, action->name);
-		spin_unlock_irqrestore(&irq_action_lock, flags);
-		return;
+	while (action && action->dev_id != dev_id) {
+		pp = &action->next;
+		action = *pp;
 	}
 
-	if (action && tmp)
-		tmp->next = action->next;
-	else
-		*(bucket->pil + irq_action) = action->next;
+	if (likely(action))
+		*pp = action->next;
+
+	return action;
+}
+
+void free_irq(unsigned int irq, void *dev_id)
+{
+	struct irqaction *action;
+	struct ino_bucket *bucket;
+	unsigned long flags;
+
+	spin_lock_irqsave(&irq_action_lock, flags);
+
+	action = unlink_irq_action(irq, dev_id);
 
 	spin_unlock_irqrestore(&irq_action_lock, flags);
 
+	if (unlikely(!action))
+		return;
+
 	synchronize_irq(irq);
 
 	spin_lock_irqsave(&irq_action_lock, flags);
 
+	bucket = __bucket(irq);
 	if (bucket != &pil0_dummy_bucket) {
+		struct irq_desc *desc = bucket->irq_info;
 		unsigned long imap = bucket->imap;
-		void **vector, *orig;
-		int ent;
-
-		orig = bucket->irq_info;
-		vector = (void **)orig;
-
-		if ((bucket->flags & IBF_MULTI) != 0) {
-			int other = 0;
-			void *orphan = NULL;
-			for (ent = 0; ent < 4; ent++) {
-				if (vector[ent] == action)
-					vector[ent] = NULL;
-				else if (vector[ent] != NULL) {
-					orphan = vector[ent];
-					other++;
-				}
-			}
+		int ent, i;
 
-			/* Only free when no other shared irq
-			 * uses this bucket.
-			 */
-			if (other) {
-				if (other == 1) {
-					/* Convert back to non-shared bucket. */
-					bucket->irq_info = orphan;
-					bucket->flags &= ~(IBF_MULTI);
-					kfree(vector);
-				}
-				goto out;
+		for (i = 0; i < MAX_IRQ_DESC_ACTION; i++) {
+			struct irqaction *p = &desc->action[i];
+
+			if (p == action) {
+				desc->action_active_mask &= ~(1 << i);
+				break;
 			}
-		} else {
-			bucket->irq_info = NULL;
 		}
 
-		/* This unique interrupt source is now inactive. */
-		bucket->flags &= ~IBF_ACTIVE;
+		if (!desc->action_active_mask) {
+			/* This unique interrupt source is now inactive. */
+			bucket->flags &= ~IBF_ACTIVE;
 
-		/* See if any other buckets share this bucket's IMAP
-		 * and are still active.
-		 */
-		for (ent = 0; ent < NUM_IVECS; ent++) {
-			bp = &ivector_table[ent];
-			if (bp != bucket	&&
-			    bp->imap == imap	&&
-			    (bp->flags & IBF_ACTIVE) != 0)
-				break;
-		}
+			/* See if any other buckets share this bucket's IMAP
+			 * and are still active.
+			 */
+			for (ent = 0; ent < NUM_IVECS; ent++) {
+				struct ino_bucket *bp = &ivector_table[ent];
+				if (bp != bucket	&&
+				    bp->imap == imap	&&
+				    (bp->flags & IBF_ACTIVE) != 0)
+					break;
+			}
 
-		/* Only disable when no other sub-irq levels of
-		 * the same IMAP are active.
-		 */
-		if (ent == NUM_IVECS)
-			disable_irq(irq);
+			/* Only disable when no other sub-irq levels of
+			 * the same IMAP are active.
+			 */
+			if (ent == NUM_IVECS)
+				disable_irq(irq);
+		}
 	}
 
-out:
-	kfree(action);
 	spin_unlock_irqrestore(&irq_action_lock, flags);
 }
 
@@ -646,99 +554,55 @@ void synchronize_irq(unsigned int irq)
 }
 #endif /* CONFIG_SMP */
 
-void catch_disabled_ivec(struct pt_regs *regs)
+static void process_bucket(int irq, struct ino_bucket *bp, struct pt_regs *regs)
 {
-	int cpu = smp_processor_id();
-	struct ino_bucket *bucket = __bucket(*irq_work(cpu, 0));
+	struct irq_desc *desc = bp->irq_info;
+	unsigned char flags = bp->flags;
+	u32 action_mask, i;
+	int random;
 
-	/* We can actually see this on Ultra/PCI PCI cards, which are bridges
-	 * to other devices.  Here a single IMAP enabled potentially multiple
-	 * unique interrupt sources (which each do have a unique ICLR register.
-	 *
-	 * So what we do is just register that the IVEC arrived, when registered
-	 * for real the request_irq() code will check the bit and signal
-	 * a local CPU interrupt for it.
-	 */
-#if 0
-	printk("IVEC: Spurious interrupt vector (%x) received at (%016lx)\n",
-	       bucket - &ivector_table[0], regs->tpc);
-#endif
-	*irq_work(cpu, 0) = 0;
-	bucket->pending = 1;
-}
+	bp->flags |= IBF_INPROGRESS;
 
-/* Tune this... */
-#define FORWARD_VOLUME		12
-
-#ifdef CONFIG_SMP
-
-static inline void redirect_intr(int cpu, struct ino_bucket *bp)
-{
-	/* Ok, here is what is going on:
-	 * 1) Retargeting IRQs on Starfire is very
-	 *    expensive so just forget about it on them.
-	 * 2) Moving around very high priority interrupts
-	 *    is a losing game.
-	 * 3) If the current cpu is idle, interrupts are
-	 *    useful work, so keep them here.  But do not
-	 *    pass to our neighbour if he is not very idle.
-	 * 4) If sysadmin explicitly asks for directed intrs,
-	 *    Just Do It.
-	 */
-	struct irqaction *ap = bp->irq_info;
-	cpumask_t cpu_mask;
-	unsigned int buddy, ticks;
-
-	cpu_mask = get_smpaff_in_irqaction(ap);
-	cpus_and(cpu_mask, cpu_mask, cpu_online_map);
-	if (cpus_empty(cpu_mask))
-		cpu_mask = cpu_online_map;
-
-	if (this_is_starfire != 0 ||
-	    bp->pil >= 10 || current->pid == 0)
+	if (unlikely(!(flags & IBF_ACTIVE))) {
+		bp->pending = 1;
 		goto out;
-
-	/* 'cpu' is the MID (ie. UPAID), calculate the MID
-	 * of our buddy.
-	 */
-	buddy = cpu + 1;
-	if (buddy >= NR_CPUS)
-		buddy = 0;
-
-	ticks = 0;
-	while (!cpu_isset(buddy, cpu_mask)) {
-		if (++buddy >= NR_CPUS)
-			buddy = 0;
-		if (++ticks > NR_CPUS) {
-			put_smpaff_in_irqaction(ap, CPU_MASK_NONE);
-			goto out;
-		}
 	}
 
-	if (buddy == cpu)
-		goto out;
+	if (desc->pre_handler)
+		desc->pre_handler(bp,
+				  desc->pre_handler_arg1,
+				  desc->pre_handler_arg2);
 
-	/* Voo-doo programming. */
-	if (cpu_data(buddy).idle_volume < FORWARD_VOLUME)
-		goto out;
+	action_mask = desc->action_active_mask;
+	random = 0;
+	for (i = 0; i < MAX_IRQ_DESC_ACTION; i++) {
+		struct irqaction *p = &desc->action[i];
+		u32 mask = (1 << i);
 
-	/* This just so happens to be correct on Cheetah
-	 * at the moment.
-	 */
-	buddy <<= 26;
+		if (!(action_mask & mask))
+			continue;
 
-	/* Push it to our buddy. */
-	upa_writel(buddy | IMAP_VALID, bp->imap);
+		action_mask &= ~mask;
 
+		if (p->handler(__irq(bp), p->dev_id, regs) == IRQ_HANDLED)
+			random |= p->flags;
+
+		if (!action_mask)
+			break;
+	}
+	if (bp->pil != 0) {
+		upa_writel(ICLR_IDLE, bp->iclr);
+		/* Test and add entropy */
+		if (random & SA_SAMPLE_RANDOM)
+			add_interrupt_randomness(irq);
+	}
 out:
-	return;
+	bp->flags &= ~IBF_INPROGRESS;
 }
 
-#endif
-
 void handler_irq(int irq, struct pt_regs *regs)
 {
-	struct ino_bucket *bp, *nbp;
+	struct ino_bucket *bp;
 	int cpu = smp_processor_id();
 
 #ifndef CONFIG_SMP
@@ -756,8 +620,6 @@ void handler_irq(int irq, struct pt_regs *regs)
 		clear_softint(clr_mask);
 	}
 #else
-	int should_forward = 0;
-
 	clear_softint(1 << irq);
 #endif
 
@@ -772,199 +634,76 @@ void handler_irq(int irq, struct pt_regs *regs)
 #else
 	bp = __bucket(xchg32(irq_work(cpu, irq), 0));
 #endif
-	for ( ; bp != NULL; bp = nbp) {
-		unsigned char flags = bp->flags;
-		unsigned char random = 0;
+	while (bp) {
+		struct ino_bucket *nbp = __bucket(bp->irq_chain);
 
-		nbp = __bucket(bp->irq_chain);
 		bp->irq_chain = 0;
-
-		bp->flags |= IBF_INPROGRESS;
-
-		if ((flags & IBF_ACTIVE) != 0) {
-#ifdef CONFIG_PCI
-			if ((flags & IBF_DMA_SYNC) != 0) {
-				upa_readl(dma_sync_reg_table[bp->synctab_ent]);
-				upa_readq(pci_dma_wsync);
-			}
-#endif
-			if ((flags & IBF_MULTI) == 0) {
-				struct irqaction *ap = bp->irq_info;
-				int ret;
-
-				ret = ap->handler(__irq(bp), ap->dev_id, regs);
-				if (ret == IRQ_HANDLED)
-					random |= ap->flags;
-			} else {
-				void **vector = (void **)bp->irq_info;
-				int ent;
-				for (ent = 0; ent < 4; ent++) {
-					struct irqaction *ap = vector[ent];
-					if (ap != NULL) {
-						int ret;
-
-						ret = ap->handler(__irq(bp),
-								  ap->dev_id,
-								  regs);
-						if (ret == IRQ_HANDLED)
-							random |= ap->flags;
-					}
-				}
-			}
-			/* Only the dummy bucket lacks IMAP/ICLR. */
-			if (bp->pil != 0) {
-#ifdef CONFIG_SMP
-				if (should_forward) {
-					redirect_intr(cpu, bp);
-					should_forward = 0;
-				}
-#endif
-				upa_writel(ICLR_IDLE, bp->iclr);
-
-				/* Test and add entropy */
-				if (random & SA_SAMPLE_RANDOM)
-					add_interrupt_randomness(irq);
-			}
-		} else
-			bp->pending = 1;
-
-		bp->flags &= ~IBF_INPROGRESS;
+		process_bucket(irq, bp, regs);
+		bp = nbp;
 	}
 	irq_exit();
 }
 
 #ifdef CONFIG_BLK_DEV_FD
-extern void floppy_interrupt(int irq, void *dev_cookie, struct pt_regs *regs);
+extern irqreturn_t floppy_interrupt(int, void *, struct pt_regs *);;
 
-void sparc_floppy_irq(int irq, void *dev_cookie, struct pt_regs *regs)
-{
-	struct irqaction *action = *(irq + irq_action);
-	struct ino_bucket *bucket;
-	int cpu = smp_processor_id();
-
-	irq_enter();
-	kstat_this_cpu.irqs[irq]++;
-
-	*(irq_work(cpu, irq)) = 0;
-	bucket = get_ino_in_irqaction(action) + ivector_table;
-
-	bucket->flags |= IBF_INPROGRESS;
-
-	floppy_interrupt(irq, dev_cookie, regs);
-	upa_writel(ICLR_IDLE, bucket->iclr);
-
-	bucket->flags &= ~IBF_INPROGRESS;
-
-	irq_exit();
-}
-#endif
-
-/* The following assumes that the branch lies before the place we
- * are branching to.  This is the case for a trap vector...
- * You have been warned.
- */
-#define SPARC_BRANCH(dest_addr, inst_addr) \
-          (0x10800000 | ((((dest_addr)-(inst_addr))>>2)&0x3fffff))
+/* XXX No easy way to include asm/floppy.h XXX */
+extern unsigned char *pdma_vaddr;
+extern unsigned long pdma_size;
+extern volatile int doing_pdma;
+extern unsigned long fdc_status;
 
-#define SPARC_NOP (0x01000000)
-
-static void install_fast_irq(unsigned int cpu_irq,
-			     irqreturn_t (*handler)(int, void *, struct pt_regs *))
-{
-	extern unsigned long sparc64_ttable_tl0;
-	unsigned long ttent = (unsigned long) &sparc64_ttable_tl0;
-	unsigned int *insns;
-
-	ttent += 0x820;
-	ttent += (cpu_irq - 1) << 5;
-	insns = (unsigned int *) ttent;
-	insns[0] = SPARC_BRANCH(((unsigned long) handler),
-				((unsigned long)&insns[0]));
-	insns[1] = SPARC_NOP;
-	__asm__ __volatile__("membar #StoreStore; flush %0" : : "r" (ttent));
-}
-
-int request_fast_irq(unsigned int irq,
-		     irqreturn_t (*handler)(int, void *, struct pt_regs *),
-		     unsigned long irqflags, const char *name, void *dev_id)
+irqreturn_t sparc_floppy_irq(int irq, void *dev_cookie, struct pt_regs *regs)
 {
-	struct irqaction *action;
-	struct ino_bucket *bucket = __bucket(irq);
-	unsigned long flags;
-
-	/* No pil0 dummy buckets allowed here. */
-	if (bucket < &ivector_table[0] ||
-	    bucket >= &ivector_table[NUM_IVECS]) {
-		unsigned int *caller;
-
-		__asm__ __volatile__("mov %%i7, %0" : "=r" (caller));
-		printk(KERN_CRIT "request_fast_irq: Old style IRQ registry attempt "
-		       "from %p, irq %08x.\n", caller, irq);
-		return -EINVAL;
-	}	
-	
-	if (!handler)
-		return -EINVAL;
+	if (likely(doing_pdma)) {
+		void __iomem *stat = (void __iomem *) fdc_status;
+		unsigned char *vaddr = pdma_vaddr;
+		unsigned long size = pdma_size;
+		u8 val;
+
+		while (size) {
+			val = readb(stat);
+			if (unlikely(!(val & 0x80))) {
+				pdma_vaddr = vaddr;
+				pdma_size = size;
+				return IRQ_HANDLED;
+			}
+			if (unlikely(!(val & 0x20))) {
+				pdma_vaddr = vaddr;
+				pdma_size = size;
+				doing_pdma = 0;
+				goto main_interrupt;
+			}
+			if (val & 0x40) {
+				/* read */
+				*vaddr++ = readb(stat + 1);
+			} else {
+				unsigned char data = *vaddr++;
 
-	if ((bucket->pil == 0) || (bucket->pil == 14)) {
-		printk("request_fast_irq: Trying to register shared IRQ 0 or 14.\n");
-		return -EBUSY;
-	}
+				/* write */
+				writeb(data, stat + 1);
+			}
+			size--;
+		}
 
-	spin_lock_irqsave(&irq_action_lock, flags);
+		pdma_vaddr = vaddr;
+		pdma_size = size;
 
-	action = *(bucket->pil + irq_action);
-	if (action) {
-		if (action->flags & SA_SHIRQ)
-			panic("Trying to register fast irq when already shared.\n");
-		if (irqflags & SA_SHIRQ)
-			panic("Trying to register fast irq as shared.\n");
-		printk("request_fast_irq: Trying to register yet already owned.\n");
-		spin_unlock_irqrestore(&irq_action_lock, flags);
-		return -EBUSY;
-	}
+		/* Send Terminal Count pulse to floppy controller. */
+		val = readb(auxio_register);
+		val |= AUXIO_AUX1_FTCNT;
+		writeb(val, auxio_register);
+		val &= AUXIO_AUX1_FTCNT;
+		writeb(val, auxio_register);
 
-	/*
-	 * We do not check for SA_SAMPLE_RANDOM in this path. Neither do we
-	 * support smp intr affinity in this path.
-	 */
-	if (irqflags & SA_STATIC_ALLOC) {
-		if (static_irq_count < MAX_STATIC_ALLOC)
-			action = &static_irqaction[static_irq_count++];
-		else
-			printk("Request for IRQ%d (%s) SA_STATIC_ALLOC failed "
-			       "using kmalloc\n", bucket->pil, name);
-	}
-	if (action == NULL)
-		action = (struct irqaction *)kmalloc(sizeof(struct irqaction),
-						     GFP_ATOMIC);
-	if (!action) {
-		spin_unlock_irqrestore(&irq_action_lock, flags);
-		return -ENOMEM;
+		doing_pdma = 0;
 	}
-	install_fast_irq(bucket->pil, handler);
 
-	bucket->irq_info = action;
-	bucket->flags |= IBF_ACTIVE;
-
-	action->handler = handler;
-	action->flags = irqflags;
-	action->dev_id = NULL;
-	action->name = name;
-	action->next = NULL;
-	put_ino_in_irqaction(action, irq);
-	put_smpaff_in_irqaction(action, CPU_MASK_NONE);
-
-	*(bucket->pil + irq_action) = action;
-	enable_irq(irq);
-
-	spin_unlock_irqrestore(&irq_action_lock, flags);
-
-#ifdef CONFIG_SMP
-	distribute_irqs();
-#endif
-	return 0;
+main_interrupt:
+	return floppy_interrupt(irq, dev_cookie, regs);
 }
+EXPORT_SYMBOL(sparc_floppy_irq);
+#endif
 
 /* We really don't need these at all on the Sparc.  We only have
  * stubs here because they are exported to modules.
@@ -1030,7 +769,10 @@ static void distribute_irqs(void)
 	 */
 	for (level = 1; level < NR_IRQS; level++) {
 		struct irqaction *p = irq_action[level];
-		if (level == 12) continue;
+
+		if (level == 12)
+			continue;
+
 		while(p) {
 			cpu = retarget_one_irq(p, cpu);
 			p = p->next;
@@ -1040,8 +782,14 @@ static void distribute_irqs(void)
 }
 #endif
 
+struct sun5_timer {
+	u64	count0;
+	u64	limit0;
+	u64	count1;
+	u64	limit1;
+};
 
-struct sun5_timer *prom_timers;
+static struct sun5_timer *prom_timers;
 static u64 prom_limit0, prom_limit1;
 
 static void map_prom_timers(void)
@@ -1097,18 +845,6 @@ static void kill_prom_timer(void)
 	: "g1", "g2");
 }
 
-void enable_prom_timer(void)
-{
-	if (!prom_timers)
-		return;
-
-	/* Set it to whatever was there before. */
-	prom_timers->limit1 = prom_limit1;
-	prom_timers->count1 = 0;
-	prom_timers->limit0 = prom_limit0;
-	prom_timers->count0 = 0;
-}
-
 void init_irqwork_curcpu(void)
 {
 	register struct irq_work_struct *workp asm("o2");
@@ -1175,7 +911,8 @@ static int irq_affinity_read_proc (char *page, char **start, off_t off,
 			int count, int *eof, void *data)
 {
 	struct ino_bucket *bp = ivector_table + (long)data;
-	struct irqaction *ap = bp->irq_info;
+	struct irq_desc *desc = bp->irq_info;
+	struct irqaction *ap = desc->action;
 	cpumask_t mask;
 	int len;
 
@@ -1193,11 +930,13 @@ static int irq_affinity_read_proc (char *page, char **start, off_t off,
 static inline void set_intr_affinity(int irq, cpumask_t hw_aff)
 {
 	struct ino_bucket *bp = ivector_table + irq;
+	struct irq_desc *desc = bp->irq_info;
+	struct irqaction *ap = desc->action;
 
 	/* Users specify affinity in terms of hw cpu ids.
 	 * As soon as we do this, handler_irq() might see and take action.
 	 */
-	put_smpaff_in_irqaction((struct irqaction *)bp->irq_info, hw_aff);
+	put_smpaff_in_irqaction(ap, hw_aff);
 
 	/* Migration is simply done by the next cpu to service this
 	 * interrupt.
diff --git a/arch/sparc64/kernel/kprobes.c b/arch/sparc64/kernel/kprobes.c
index 7066d7ba667..bbf11f85dab 100644
--- a/arch/sparc64/kernel/kprobes.c
+++ b/arch/sparc64/kernel/kprobes.c
@@ -6,7 +6,6 @@
 #include <linux/config.h>
 #include <linux/kernel.h>
 #include <linux/kprobes.h>
-
 #include <asm/kdebug.h>
 #include <asm/signal.h>
 
@@ -47,25 +46,59 @@ void arch_copy_kprobe(struct kprobe *p)
 {
 	p->ainsn.insn[0] = *p->addr;
 	p->ainsn.insn[1] = BREAKPOINT_INSTRUCTION_2;
+	p->opcode = *p->addr;
 }
 
-void arch_remove_kprobe(struct kprobe *p)
+void arch_arm_kprobe(struct kprobe *p)
+{
+	*p->addr = BREAKPOINT_INSTRUCTION;
+	flushi(p->addr);
+}
+
+void arch_disarm_kprobe(struct kprobe *p)
 {
+	*p->addr = p->opcode;
+	flushi(p->addr);
 }
 
-/* kprobe_status settings */
-#define KPROBE_HIT_ACTIVE	0x00000001
-#define KPROBE_HIT_SS		0x00000002
+void arch_remove_kprobe(struct kprobe *p)
+{
+}
 
 static struct kprobe *current_kprobe;
 static unsigned long current_kprobe_orig_tnpc;
 static unsigned long current_kprobe_orig_tstate_pil;
 static unsigned int kprobe_status;
+static struct kprobe *kprobe_prev;
+static unsigned long kprobe_orig_tnpc_prev;
+static unsigned long kprobe_orig_tstate_pil_prev;
+static unsigned int kprobe_status_prev;
 
-static inline void prepare_singlestep(struct kprobe *p, struct pt_regs *regs)
+static inline void save_previous_kprobe(void)
+{
+	kprobe_status_prev = kprobe_status;
+	kprobe_orig_tnpc_prev = current_kprobe_orig_tnpc;
+	kprobe_orig_tstate_pil_prev = current_kprobe_orig_tstate_pil;
+	kprobe_prev = current_kprobe;
+}
+
+static inline void restore_previous_kprobe(void)
+{
+	kprobe_status = kprobe_status_prev;
+	current_kprobe_orig_tnpc = kprobe_orig_tnpc_prev;
+	current_kprobe_orig_tstate_pil = kprobe_orig_tstate_pil_prev;
+	current_kprobe = kprobe_prev;
+}
+
+static inline void set_current_kprobe(struct kprobe *p, struct pt_regs *regs)
 {
 	current_kprobe_orig_tnpc = regs->tnpc;
 	current_kprobe_orig_tstate_pil = (regs->tstate & TSTATE_PIL);
+	current_kprobe = p;
+}
+
+static inline void prepare_singlestep(struct kprobe *p, struct pt_regs *regs)
+{
 	regs->tstate |= TSTATE_PIL;
 
 	/*single step inline, if it a breakpoint instruction*/
@@ -78,17 +111,6 @@ static inline void prepare_singlestep(struct kprobe *p, struct pt_regs *regs)
 	}
 }
 
-static inline void disarm_kprobe(struct kprobe *p, struct pt_regs *regs)
-{
-	*p->addr = p->opcode;
-	flushi(p->addr);
-
-	regs->tpc = (unsigned long) p->addr;
-	regs->tnpc = current_kprobe_orig_tnpc;
-	regs->tstate = ((regs->tstate & ~TSTATE_PIL) |
-			current_kprobe_orig_tstate_pil);
-}
-
 static int kprobe_handler(struct pt_regs *regs)
 {
 	struct kprobe *p;
@@ -109,8 +131,18 @@ static int kprobe_handler(struct pt_regs *regs)
 				unlock_kprobes();
 				goto no_kprobe;
 			}
-			disarm_kprobe(p, regs);
-			ret = 1;
+			/* We have reentered the kprobe_handler(), since
+			 * another probe was hit while within the handler.
+			 * We here save the original kprobes variables and
+			 * just single step on the instruction of the new probe
+			 * without calling any user handlers.
+			 */
+			save_previous_kprobe();
+			set_current_kprobe(p, regs);
+			p->nmissed++;
+			kprobe_status = KPROBE_REENTER;
+			prepare_singlestep(p, regs);
+			return 1;
 		} else {
 			p = current_kprobe;
 			if (p->break_handler && p->break_handler(p, regs))
@@ -138,8 +170,8 @@ static int kprobe_handler(struct pt_regs *regs)
 		goto no_kprobe;
 	}
 
+	set_current_kprobe(p, regs);
 	kprobe_status = KPROBE_HIT_ACTIVE;
-	current_kprobe = p;
 	if (p->pre_handler && p->pre_handler(p, regs))
 		return 1;
 
@@ -245,12 +277,20 @@ static inline int post_kprobe_handler(struct pt_regs *regs)
 	if (!kprobe_running())
 		return 0;
 
-	if (current_kprobe->post_handler)
+	if ((kprobe_status != KPROBE_REENTER) && current_kprobe->post_handler) {
+		kprobe_status = KPROBE_HIT_SSDONE;
 		current_kprobe->post_handler(current_kprobe, regs, 0);
+	}
 
 	resume_execution(current_kprobe, regs);
 
+	/*Restore back the original saved kprobes variables and continue. */
+	if (kprobe_status == KPROBE_REENTER) {
+		restore_previous_kprobe();
+		goto out;
+	}
 	unlock_kprobes();
+out:
 	preempt_enable_no_resched();
 
 	return 1;
@@ -392,3 +432,9 @@ int longjmp_break_handler(struct kprobe *p, struct pt_regs *regs)
 	}
 	return 0;
 }
+
+/* architecture specific initialization */
+int arch_init_kprobes(void)
+{
+	return 0;
+}
diff --git a/arch/sparc64/kernel/pci_psycho.c b/arch/sparc64/kernel/pci_psycho.c
index 534320ef0db..91ab466d6c6 100644
--- a/arch/sparc64/kernel/pci_psycho.c
+++ b/arch/sparc64/kernel/pci_psycho.c
@@ -1303,8 +1303,7 @@ static void psycho_controller_hwinit(struct pci_controller_info *p)
 {
 	u64 tmp;
 
-	/* PROM sets the IRQ retry value too low, increase it. */
-	psycho_write(p->pbm_A.controller_regs + PSYCHO_IRQ_RETRY, 0xff);
+	psycho_write(p->pbm_A.controller_regs + PSYCHO_IRQ_RETRY, 5);
 
 	/* Enable arbiter for all PCI slots. */
 	tmp = psycho_read(p->pbm_A.controller_regs + PSYCHO_PCIA_CTRL);
diff --git a/arch/sparc64/kernel/pci_sabre.c b/arch/sparc64/kernel/pci_sabre.c
index 53d333b4a4e..52bf3431a42 100644
--- a/arch/sparc64/kernel/pci_sabre.c
+++ b/arch/sparc64/kernel/pci_sabre.c
@@ -595,6 +595,23 @@ static int __init sabre_ino_to_pil(struct pci_dev *pdev, unsigned int ino)
 	return ret;
 }
 
+/* When a device lives behind a bridge deeper in the PCI bus topology
+ * than APB, a special sequence must run to make sure all pending DMA
+ * transfers at the time of IRQ delivery are visible in the coherency
+ * domain by the cpu.  This sequence is to perform a read on the far
+ * side of the non-APB bridge, then perform a read of Sabre's DMA
+ * write-sync register.
+ */
+static void sabre_wsync_handler(struct ino_bucket *bucket, void *_arg1, void *_arg2)
+{
+	struct pci_dev *pdev = _arg1;
+	unsigned long sync_reg = (unsigned long) _arg2;
+	u16 _unused;
+
+	pci_read_config_word(pdev, PCI_VENDOR_ID, &_unused);
+	sabre_read(sync_reg);
+}
+
 static unsigned int __init sabre_irq_build(struct pci_pbm_info *pbm,
 					   struct pci_dev *pdev,
 					   unsigned int ino)
@@ -639,24 +656,14 @@ static unsigned int __init sabre_irq_build(struct pci_pbm_info *pbm,
 	if (pdev) {
 		struct pcidev_cookie *pcp = pdev->sysdata;
 
-		/* When a device lives behind a bridge deeper in the
-		 * PCI bus topology than APB, a special sequence must
-		 * run to make sure all pending DMA transfers at the
-		 * time of IRQ delivery are visible in the coherency
-		 * domain by the cpu.  This sequence is to perform
-		 * a read on the far side of the non-APB bridge, then
-		 * perform a read of Sabre's DMA write-sync register.
-		 *
-		 * Currently, the PCI_CONFIG register for the device
-		 * is used for this read from the far side of the bridge.
-		 */
 		if (pdev->bus->number != pcp->pbm->pci_first_busno) {
-			bucket->flags |= IBF_DMA_SYNC;
-			bucket->synctab_ent = dma_sync_reg_table_entry++;
-			dma_sync_reg_table[bucket->synctab_ent] =
-				(unsigned long) sabre_pci_config_mkaddr(
-					pcp->pbm,
-					pdev->bus->number, pdev->devfn, PCI_COMMAND);
+			struct pci_controller_info *p = pcp->pbm->parent;
+			struct irq_desc *d = bucket->irq_info;
+
+			d->pre_handler = sabre_wsync_handler;
+			d->pre_handler_arg1 = pdev;
+			d->pre_handler_arg2 = (void *)
+				p->pbm_A.controller_regs + SABRE_WRSYNC;
 		}
 	}
 	return __irq(bucket);
@@ -1626,10 +1633,9 @@ void __init sabre_init(int pnode, char *model_name)
 	 */
 	p->pbm_A.controller_regs = pr_regs[0].phys_addr;
 	p->pbm_B.controller_regs = pr_regs[0].phys_addr;
-	pci_dma_wsync = p->pbm_A.controller_regs + SABRE_WRSYNC;
 
-	printk("PCI: Found SABRE, main regs at %016lx, wsync at %016lx\n",
-	       p->pbm_A.controller_regs, pci_dma_wsync);
+	printk("PCI: Found SABRE, main regs at %016lx\n",
+	       p->pbm_A.controller_regs);
 
 	/* Clear interrupts */
 
diff --git a/arch/sparc64/kernel/pci_schizo.c b/arch/sparc64/kernel/pci_schizo.c
index 5753175b94e..6a182bb6628 100644
--- a/arch/sparc64/kernel/pci_schizo.c
+++ b/arch/sparc64/kernel/pci_schizo.c
@@ -15,6 +15,7 @@
 #include <asm/iommu.h>
 #include <asm/irq.h>
 #include <asm/upa.h>
+#include <asm/pstate.h>
 
 #include "pci_impl.h"
 #include "iommu_common.h"
@@ -326,6 +327,44 @@ static int __init schizo_ino_to_pil(struct pci_dev *pdev, unsigned int ino)
 	return ret;
 }
 
+static void tomatillo_wsync_handler(struct ino_bucket *bucket, void *_arg1, void *_arg2)
+{
+	unsigned long sync_reg = (unsigned long) _arg2;
+	u64 mask = 1 << (__irq_ino(__irq(bucket)) & IMAP_INO);
+	u64 val;
+	int limit;
+
+	schizo_write(sync_reg, mask);
+
+	limit = 100000;
+	val = 0;
+	while (--limit) {
+		val = schizo_read(sync_reg);
+		if (!(val & mask))
+			break;
+	}
+	if (limit <= 0) {
+		printk("tomatillo_wsync_handler: DMA won't sync [%lx:%lx]\n",
+		       val, mask);
+	}
+
+	if (_arg1) {
+		static unsigned char cacheline[64]
+			__attribute__ ((aligned (64)));
+
+		__asm__ __volatile__("rd %%fprs, %0\n\t"
+				     "or %0, %4, %1\n\t"
+				     "wr %1, 0x0, %%fprs\n\t"
+				     "stda %%f0, [%5] %6\n\t"
+				     "wr %0, 0x0, %%fprs\n\t"
+				     "membar #Sync"
+				     : "=&r" (mask), "=&r" (val)
+				     : "0" (mask), "1" (val),
+				     "i" (FPRS_FEF), "r" (&cacheline[0]),
+				     "i" (ASI_BLK_COMMIT_P));
+	}
+}
+
 static unsigned int schizo_irq_build(struct pci_pbm_info *pbm,
 				     struct pci_dev *pdev,
 				     unsigned int ino)
@@ -369,6 +408,15 @@ static unsigned int schizo_irq_build(struct pci_pbm_info *pbm,
 	bucket = __bucket(build_irq(pil, ign_fixup, iclr, imap));
 	bucket->flags |= IBF_PCI;
 
+	if (pdev && pbm->chip_type == PBM_CHIP_TYPE_TOMATILLO) {
+		struct irq_desc *p = bucket->irq_info;
+
+		p->pre_handler = tomatillo_wsync_handler;
+		p->pre_handler_arg1 = ((pbm->chip_version <= 4) ?
+				       (void *) 1 : (void *) 0);
+		p->pre_handler_arg2 = (void *) pbm->sync_reg;
+	}
+
 	return __irq(bucket);
 }
 
@@ -885,6 +933,7 @@ static irqreturn_t schizo_ce_intr(int irq, void *dev_id, struct pt_regs *regs)
 
 #define SCHIZO_PCI_CTRL		(0x2000UL)
 #define SCHIZO_PCICTRL_BUS_UNUS	(1UL << 63UL) /* Safari */
+#define SCHIZO_PCICTRL_DTO_INT	(1UL << 61UL) /* Tomatillo */
 #define SCHIZO_PCICTRL_ARB_PRIO (0x1ff << 52UL) /* Tomatillo */
 #define SCHIZO_PCICTRL_ESLCK	(1UL << 51UL) /* Safari */
 #define SCHIZO_PCICTRL_ERRSLOT	(7UL << 48UL) /* Safari */
@@ -1887,37 +1936,27 @@ static void __init schizo_pbm_hw_init(struct pci_pbm_info *pbm)
 {
 	u64 tmp;
 
-	/* Set IRQ retry to infinity. */
-	schizo_write(pbm->pbm_regs + SCHIZO_PCI_IRQ_RETRY,
-		     SCHIZO_IRQ_RETRY_INF);
+	schizo_write(pbm->pbm_regs + SCHIZO_PCI_IRQ_RETRY, 5);
 
-	/* Enable arbiter for all PCI slots.  Also, disable PCI interval
-	 * timer so that DTO (Discard TimeOuts) are not reported because
-	 * some Schizo revisions report them erroneously.
-	 */
 	tmp = schizo_read(pbm->pbm_regs + SCHIZO_PCI_CTRL);
-	if (pbm->chip_type == PBM_CHIP_TYPE_SCHIZO_PLUS &&
-	    pbm->chip_version == 0x5 &&
-	    pbm->chip_revision == 0x1)
-		tmp |= 0x0f;
-	else
-		tmp |= 0xff;
 
-	tmp &= ~SCHIZO_PCICTRL_PTO;
+	/* Enable arbiter for all PCI slots.  */
+	tmp |= 0xff;
+
 	if (pbm->chip_type == PBM_CHIP_TYPE_TOMATILLO &&
 	    pbm->chip_version >= 0x2)
 		tmp |= 0x3UL << SCHIZO_PCICTRL_PTO_SHIFT;
-	else
-		tmp |= 0x1UL << SCHIZO_PCICTRL_PTO_SHIFT;
 
 	if (!prom_getbool(pbm->prom_node, "no-bus-parking"))
 		tmp |= SCHIZO_PCICTRL_PARK;
+	else
+		tmp &= ~SCHIZO_PCICTRL_PARK;
 
 	if (pbm->chip_type == PBM_CHIP_TYPE_TOMATILLO &&
 	    pbm->chip_version <= 0x1)
-		tmp |= (1UL << 61);
+		tmp |= SCHIZO_PCICTRL_DTO_INT;
 	else
-		tmp &= ~(1UL << 61);
+		tmp &= ~SCHIZO_PCICTRL_DTO_INT;
 
 	if (pbm->chip_type == PBM_CHIP_TYPE_TOMATILLO)
 		tmp |= (SCHIZO_PCICTRL_MRM_PREF |
@@ -2015,6 +2054,9 @@ static void __init schizo_pbm_init(struct pci_controller_info *p,
 	pbm->pbm_regs = pr_regs[0].phys_addr;
 	pbm->controller_regs = pr_regs[1].phys_addr - 0x10000UL;
 
+	if (chip_type == PBM_CHIP_TYPE_TOMATILLO)
+		pbm->sync_reg = pr_regs[3].phys_addr + 0x1a18UL;
+
 	sprintf(pbm->name,
 		(chip_type == PBM_CHIP_TYPE_TOMATILLO ?
 		 "TOMATILLO%d PBM%c" :
diff --git a/arch/sparc64/kernel/power.c b/arch/sparc64/kernel/power.c
index 52f14e399b1..946cee0257e 100644
--- a/arch/sparc64/kernel/power.c
+++ b/arch/sparc64/kernel/power.c
@@ -4,6 +4,8 @@
  * Copyright (C) 1999 David S. Miller (davem@redhat.com)
  */
 
+#define __KERNEL_SYSCALLS__
+
 #include <linux/config.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
@@ -17,7 +19,6 @@
 #include <asm/ebus.h>
 #include <asm/auxio.h>
 
-#define __KERNEL_SYSCALLS__
 #include <linux/unistd.h>
 
 /*
@@ -68,8 +69,6 @@ void machine_power_off(void)
 	machine_halt();
 }
 
-EXPORT_SYMBOL(machine_power_off);
-
 #ifdef CONFIG_PCI
 static int powerd(void *__unused)
 {
diff --git a/arch/sparc64/kernel/process.c b/arch/sparc64/kernel/process.c
index a0cd2b2494d..07424b07593 100644
--- a/arch/sparc64/kernel/process.c
+++ b/arch/sparc64/kernel/process.c
@@ -124,8 +124,6 @@ void machine_halt(void)
 	panic("Halt failed!");
 }
 
-EXPORT_SYMBOL(machine_halt);
-
 void machine_alt_power_off(void)
 {
 	if (!serial_console && prom_palette)
@@ -154,8 +152,6 @@ void machine_restart(char * cmd)
 	panic("Reboot failed!");
 }
 
-EXPORT_SYMBOL(machine_restart);
-
 static void show_regwindow32(struct pt_regs *regs)
 {
 	struct reg_window32 __user *rw;
@@ -621,8 +617,8 @@ int copy_thread(int nr, unsigned long clone_flags, unsigned long sp,
 	memcpy(child_trap_frame, (((struct sparc_stackf *)regs)-1), (TRACEREG_SZ+STACKFRAME_SZ));
 
 	t->flags = (t->flags & ~((0xffUL << TI_FLAG_CWP_SHIFT) | (0xffUL << TI_FLAG_CURRENT_DS_SHIFT))) |
-		_TIF_NEWCHILD |
 		(((regs->tstate + 1) & TSTATE_CWP) << TI_FLAG_CWP_SHIFT);
+	t->new_child = 1;
 	t->ksp = ((unsigned long) child_trap_frame) - STACK_BIAS;
 	t->kregs = (struct pt_regs *)(child_trap_frame+sizeof(struct sparc_stackf));
 	t->fpsaved[0] = 0;
diff --git a/arch/sparc64/kernel/ptrace.c b/arch/sparc64/kernel/ptrace.c
index 80a76e2ad73..23ad839d113 100644
--- a/arch/sparc64/kernel/ptrace.c
+++ b/arch/sparc64/kernel/ptrace.c
@@ -19,6 +19,8 @@
 #include <linux/smp.h>
 #include <linux/smp_lock.h>
 #include <linux/security.h>
+#include <linux/seccomp.h>
+#include <linux/audit.h>
 #include <linux/signal.h>
 
 #include <asm/asi.h>
@@ -628,15 +630,27 @@ out:
 	unlock_kernel();
 }
 
-asmlinkage void syscall_trace(void)
+asmlinkage void syscall_trace(struct pt_regs *regs, int syscall_exit_p)
 {
-#ifdef DEBUG_PTRACE
-	printk("%s [%d]: syscall_trace\n", current->comm, current->pid);
-#endif
-	if (!test_thread_flag(TIF_SYSCALL_TRACE))
-		return;
+	/* do the secure computing check first */
+	secure_computing(regs->u_regs[UREG_G1]);
+
+	if (unlikely(current->audit_context) && syscall_exit_p) {
+		unsigned long tstate = regs->tstate;
+		int result = AUDITSC_SUCCESS;
+
+		if (unlikely(tstate & (TSTATE_XCARRY | TSTATE_ICARRY)))
+			result = AUDITSC_FAILURE;
+
+		audit_syscall_exit(current, result, regs->u_regs[UREG_I0]);
+	}
+
 	if (!(current->ptrace & PT_PTRACED))
-		return;
+		goto out;
+
+	if (!test_thread_flag(TIF_SYSCALL_TRACE))
+		goto out;
+
 	ptrace_notify(SIGTRAP | ((current->ptrace & PT_TRACESYSGOOD)
 				 ? 0x80 : 0));
 
@@ -645,12 +659,20 @@ asmlinkage void syscall_trace(void)
 	 * for normal use.  strace only continues with a signal if the
 	 * stopping signal is not SIGTRAP.  -brl
 	 */
-#ifdef DEBUG_PTRACE
-	printk("%s [%d]: syscall_trace exit= %x\n", current->comm,
-		current->pid, current->exit_code);
-#endif
 	if (current->exit_code) {
-		send_sig (current->exit_code, current, 1);
+		send_sig(current->exit_code, current, 1);
 		current->exit_code = 0;
 	}
+
+out:
+	if (unlikely(current->audit_context) && !syscall_exit_p)
+		audit_syscall_entry(current,
+				    (test_thread_flag(TIF_32BIT) ?
+				     AUDIT_ARCH_SPARC :
+				     AUDIT_ARCH_SPARC64),
+				    regs->u_regs[UREG_G1],
+				    regs->u_regs[UREG_I0],
+				    regs->u_regs[UREG_I1],
+				    regs->u_regs[UREG_I2],
+				    regs->u_regs[UREG_I3]);
 }
diff --git a/arch/sparc64/kernel/semaphore.c b/arch/sparc64/kernel/semaphore.c
index 63496c43fe1..a809e63f03e 100644
--- a/arch/sparc64/kernel/semaphore.c
+++ b/arch/sparc64/kernel/semaphore.c
@@ -32,8 +32,9 @@ static __inline__ int __sem_update_count(struct semaphore *sem, int incr)
 "	add	%1, %4, %1\n"
 "	cas	[%3], %0, %1\n"
 "	cmp	%0, %1\n"
+"	membar	#StoreLoad | #StoreStore\n"
 "	bne,pn	%%icc, 1b\n"
-"	 membar #StoreLoad | #StoreStore\n"
+"	 nop\n"
 	: "=&r" (old_count), "=&r" (tmp), "=m" (sem->count)
 	: "r" (&sem->count), "r" (incr), "m" (sem->count)
 	: "cc");
@@ -71,8 +72,9 @@ void up(struct semaphore *sem)
 "	cmp	%%g1, %%g7\n"
 "	bne,pn	%%icc, 1b\n"
 "	 addcc	%%g7, 1, %%g0\n"
+"	membar	#StoreLoad | #StoreStore\n"
 "	ble,pn	%%icc, 3f\n"
-"	 membar	#StoreLoad | #StoreStore\n"
+"	 nop\n"
 "2:\n"
 "	.subsection 2\n"
 "3:	mov	%0, %%g1\n"
@@ -128,8 +130,9 @@ void __sched down(struct semaphore *sem)
 "	cmp	%%g1, %%g7\n"
 "	bne,pn	%%icc, 1b\n"
 "	 cmp	%%g7, 1\n"
+"	membar	#StoreLoad | #StoreStore\n"
 "	bl,pn	%%icc, 3f\n"
-"	 membar	#StoreLoad | #StoreStore\n"
+"	 nop\n"
 "2:\n"
 "	.subsection 2\n"
 "3:	mov	%0, %%g1\n"
@@ -233,8 +236,9 @@ int __sched down_interruptible(struct semaphore *sem)
 "	cmp	%%g1, %%g7\n"
 "	bne,pn	%%icc, 1b\n"
 "	 cmp	%%g7, 1\n"
+"	membar	#StoreLoad | #StoreStore\n"
 "	bl,pn	%%icc, 3f\n"
-"	 membar	#StoreLoad | #StoreStore\n"
+"	 nop\n"
 "2:\n"
 "	.subsection 2\n"
 "3:	mov	%2, %%g1\n"
diff --git a/arch/sparc64/kernel/signal32.c b/arch/sparc64/kernel/signal32.c
index 9a375e975cf..f28428f4170 100644
--- a/arch/sparc64/kernel/signal32.c
+++ b/arch/sparc64/kernel/signal32.c
@@ -102,7 +102,7 @@ typedef struct compat_siginfo{
 
 		/* POSIX.1b timers */
 		struct {
-			timer_t _tid;			/* timer id */
+			compat_timer_t _tid;			/* timer id */
 			int _overrun;			/* overrun count */
 			compat_sigval_t _sigval;		/* same as below */
 			int _sys_private;		/* not to be passed to user */
diff --git a/arch/sparc64/kernel/smp.c b/arch/sparc64/kernel/smp.c
index e5b9c7a2778..b9b42491e11 100644
--- a/arch/sparc64/kernel/smp.c
+++ b/arch/sparc64/kernel/smp.c
@@ -45,8 +45,8 @@ extern void calibrate_delay(void);
 /* Please don't make this stuff initdata!!!  --DaveM */
 static unsigned char boot_cpu_id;
 
-cpumask_t cpu_online_map = CPU_MASK_NONE;
-cpumask_t phys_cpu_present_map = CPU_MASK_NONE;
+cpumask_t cpu_online_map __read_mostly = CPU_MASK_NONE;
+cpumask_t phys_cpu_present_map __read_mostly = CPU_MASK_NONE;
 static cpumask_t smp_commenced_mask;
 static cpumask_t cpu_callout_map;
 
@@ -137,7 +137,7 @@ void __init smp_callin(void)
 	/* Clear this or we will die instantly when we
 	 * schedule back to this idler...
 	 */
-	clear_thread_flag(TIF_NEWCHILD);
+	current_thread_info()->new_child = 0;
 
 	/* Attach to the address space of init_task. */
 	atomic_inc(&init_mm.mm_count);
@@ -155,7 +155,7 @@ void cpu_panic(void)
 	panic("SMP bolixed\n");
 }
 
-static unsigned long current_tick_offset;
+static unsigned long current_tick_offset __read_mostly;
 
 /* This tick register synchronization scheme is taken entirely from
  * the ia64 port, see arch/ia64/kernel/smpboot.c for details and credit.
@@ -1193,8 +1193,8 @@ void smp_send_stop(void)
 {
 }
 
-unsigned long __per_cpu_base;
-unsigned long __per_cpu_shift;
+unsigned long __per_cpu_base __read_mostly;
+unsigned long __per_cpu_shift __read_mostly;
 
 EXPORT_SYMBOL(__per_cpu_base);
 EXPORT_SYMBOL(__per_cpu_shift);
diff --git a/arch/sparc64/kernel/sparc64_ksyms.c b/arch/sparc64/kernel/sparc64_ksyms.c
index e78cc53594f..9202d925a9c 100644
--- a/arch/sparc64/kernel/sparc64_ksyms.c
+++ b/arch/sparc64/kernel/sparc64_ksyms.c
@@ -79,7 +79,7 @@ extern void linux_sparc_syscall(void);
 extern void rtrap(void);
 extern void show_regs(struct pt_regs *);
 extern void solaris_syscall(void);
-extern void syscall_trace(void);
+extern void syscall_trace(struct pt_regs *, int);
 extern u32 sunos_sys_table[], sys_call_table32[];
 extern void tl0_solaris(void);
 extern void sys_sigsuspend(void);
@@ -227,7 +227,6 @@ EXPORT_SYMBOL(__flush_dcache_range);
 
 EXPORT_SYMBOL(mostek_lock);
 EXPORT_SYMBOL(mstk48t02_regs);
-EXPORT_SYMBOL(request_fast_irq);
 #ifdef CONFIG_SUN_AUXIO
 EXPORT_SYMBOL(auxio_set_led);
 EXPORT_SYMBOL(auxio_set_lte);
diff --git a/arch/sparc64/kernel/sys32.S b/arch/sparc64/kernel/sys32.S
index 5a95e98c531..5f9e4fae612 100644
--- a/arch/sparc64/kernel/sys32.S
+++ b/arch/sparc64/kernel/sys32.S
@@ -135,6 +135,8 @@ SIGN2(sys32_shutdown, sys_shutdown, %o0, %o1)
 SIGN3(sys32_socketpair, sys_socketpair, %o0, %o1, %o2)
 SIGN1(sys32_getpeername, sys_getpeername, %o0)
 SIGN1(sys32_getsockname, sys_getsockname, %o0)
+SIGN2(sys32_ioprio_get, sys_ioprio_get, %o0, %o1)
+SIGN3(sys32_ioprio_set, sys_ioprio_set, %o0, %o1, %o2)
 
 	.globl		sys32_mmap2
 sys32_mmap2:
diff --git a/arch/sparc64/kernel/systbls.S b/arch/sparc64/kernel/systbls.S
index a5e36a4c892..53eaf2345fe 100644
--- a/arch/sparc64/kernel/systbls.S
+++ b/arch/sparc64/kernel/systbls.S
@@ -50,8 +50,8 @@ sys_call_table32:
 	.word sys_nis_syscall, sys32_mkdir, sys_rmdir, sys32_utimes, compat_sys_stat64
 /*140*/	.word sys32_sendfile64, sys_nis_syscall, sys32_futex, sys_gettid, compat_sys_getrlimit
 	.word compat_sys_setrlimit, sys_pivot_root, sys32_prctl, sys_pciconfig_read, sys_pciconfig_write
-/*150*/	.word sys_nis_syscall, sys_nis_syscall, sys_nis_syscall, sys_poll, sys_getdents64
-	.word compat_sys_fcntl64, sys_ni_syscall, compat_sys_statfs, compat_sys_fstatfs, sys_oldumount
+/*150*/	.word sys_nis_syscall, sys_inotify_init, sys_inotify_add_watch, sys_poll, sys_getdents64
+	.word compat_sys_fcntl64, sys_inotify_rm_watch, compat_sys_statfs, compat_sys_fstatfs, sys_oldumount
 /*160*/	.word compat_sys_sched_setaffinity, compat_sys_sched_getaffinity, sys32_getdomainname, sys32_setdomainname, sys_nis_syscall
 	.word sys_quotactl, sys_set_tid_address, compat_sys_mount, sys_ustat, sys32_setxattr
 /*170*/	.word sys32_lsetxattr, sys32_fsetxattr, sys_getxattr, sys_lgetxattr, compat_sys_getdents
@@ -59,11 +59,11 @@ sys_call_table32:
 /*180*/	.word sys32_flistxattr, sys_removexattr, sys_lremovexattr, compat_sys_sigpending, sys_ni_syscall
 	.word sys32_setpgid, sys32_fremovexattr, sys32_tkill, sys32_exit_group, sparc64_newuname
 /*190*/	.word sys32_init_module, sparc64_personality, sys_remap_file_pages, sys32_epoll_create, sys32_epoll_ctl
-	.word sys32_epoll_wait, sys_nis_syscall, sys_getppid, sys32_sigaction, sys_sgetmask
+	.word sys32_epoll_wait, sys32_ioprio_set, sys_getppid, sys32_sigaction, sys_sgetmask
 /*200*/	.word sys32_ssetmask, sys_sigsuspend, compat_sys_newlstat, sys_uselib, compat_sys_old_readdir
 	.word sys32_readahead, sys32_socketcall, sys32_syslog, sys32_lookup_dcookie, sys32_fadvise64
 /*210*/	.word sys32_fadvise64_64, sys32_tgkill, sys32_waitpid, sys_swapoff, sys32_sysinfo
-	.word sys32_ipc, sys32_sigreturn, sys_clone, sys_nis_syscall, sys32_adjtimex
+	.word sys32_ipc, sys32_sigreturn, sys_clone, sys32_ioprio_get, sys32_adjtimex
 /*220*/	.word sys32_sigprocmask, sys_ni_syscall, sys32_delete_module, sys_ni_syscall, sys32_getpgid
 	.word sys32_bdflush, sys32_sysfs, sys_nis_syscall, sys32_setfsuid16, sys32_setfsgid16
 /*230*/	.word sys32_select, compat_sys_time, sys_nis_syscall, compat_sys_stime, compat_sys_statfs64
@@ -116,8 +116,8 @@ sys_call_table:
 	.word sys_socketpair, sys_mkdir, sys_rmdir, sys_utimes, sys_stat64
 /*140*/	.word sys_sendfile64, sys_getpeername, sys_futex, sys_gettid, sys_getrlimit
 	.word sys_setrlimit, sys_pivot_root, sys_prctl, sys_pciconfig_read, sys_pciconfig_write
-/*150*/	.word sys_getsockname, sys_nis_syscall, sys_nis_syscall, sys_poll, sys_getdents64
-	.word sys_nis_syscall, sys_ni_syscall, sys_statfs, sys_fstatfs, sys_oldumount
+/*150*/	.word sys_getsockname, sys_inotify_init, sys_inotify_add_watch, sys_poll, sys_getdents64
+	.word sys_nis_syscall, sys_inotify_rm_watch, sys_statfs, sys_fstatfs, sys_oldumount
 /*160*/	.word sys_sched_setaffinity, sys_sched_getaffinity, sys_getdomainname, sys_setdomainname, sys_utrap_install
 	.word sys_quotactl, sys_set_tid_address, sys_mount, sys_ustat, sys_setxattr
 /*170*/	.word sys_lsetxattr, sys_fsetxattr, sys_getxattr, sys_lgetxattr, sys_getdents
@@ -125,11 +125,11 @@ sys_call_table:
 /*180*/	.word sys_flistxattr, sys_removexattr, sys_lremovexattr, sys_nis_syscall, sys_ni_syscall
 	.word sys_setpgid, sys_fremovexattr, sys_tkill, sys_exit_group, sparc64_newuname
 /*190*/	.word sys_init_module, sparc64_personality, sys_remap_file_pages, sys_epoll_create, sys_epoll_ctl
-	.word sys_epoll_wait, sys_nis_syscall, sys_getppid, sys_nis_syscall, sys_sgetmask
+	.word sys_epoll_wait, sys_ioprio_set, sys_getppid, sys_nis_syscall, sys_sgetmask
 /*200*/	.word sys_ssetmask, sys_nis_syscall, sys_newlstat, sys_uselib, sys_nis_syscall
 	.word sys_readahead, sys_socketcall, sys_syslog, sys_lookup_dcookie, sys_fadvise64
 /*210*/	.word sys_fadvise64_64, sys_tgkill, sys_waitpid, sys_swapoff, sys_sysinfo
-	.word sys_ipc, sys_nis_syscall, sys_clone, sys_nis_syscall, sys_adjtimex
+	.word sys_ipc, sys_nis_syscall, sys_clone, sys_ioprio_get, sys_adjtimex
 /*220*/	.word sys_nis_syscall, sys_ni_syscall, sys_delete_module, sys_ni_syscall, sys_getpgid
 	.word sys_bdflush, sys_sysfs, sys_nis_syscall, sys_setfsuid, sys_setfsgid
 /*230*/	.word sys_select, sys_nis_syscall, sys_nis_syscall, sys_stime, sys_statfs64
diff --git a/arch/sparc64/kernel/time.c b/arch/sparc64/kernel/time.c
index 71b4e380769..362b9c26871 100644
--- a/arch/sparc64/kernel/time.c
+++ b/arch/sparc64/kernel/time.c
@@ -73,7 +73,7 @@ static __initdata struct sparc64_tick_ops dummy_tick_ops = {
 	.get_tick	= dummy_get_tick,
 };
 
-struct sparc64_tick_ops *tick_ops = &dummy_tick_ops;
+struct sparc64_tick_ops *tick_ops __read_mostly = &dummy_tick_ops;
 
 #define TICK_PRIV_BIT	(1UL << 63)
 
@@ -195,7 +195,7 @@ static unsigned long tick_add_tick(unsigned long adj, unsigned long offset)
 	return new_tick;
 }
 
-static struct sparc64_tick_ops tick_operations = {
+static struct sparc64_tick_ops tick_operations __read_mostly = {
 	.init_tick	=	tick_init_tick,
 	.get_tick	=	tick_get_tick,
 	.get_compare	=	tick_get_compare,
@@ -276,7 +276,7 @@ static unsigned long stick_add_compare(unsigned long adj)
 	return new_compare;
 }
 
-static struct sparc64_tick_ops stick_operations = {
+static struct sparc64_tick_ops stick_operations __read_mostly = {
 	.init_tick	=	stick_init_tick,
 	.get_tick	=	stick_get_tick,
 	.get_compare	=	stick_get_compare,
@@ -422,7 +422,7 @@ static unsigned long hbtick_add_compare(unsigned long adj)
 	return val;
 }
 
-static struct sparc64_tick_ops hbtick_operations = {
+static struct sparc64_tick_ops hbtick_operations __read_mostly = {
 	.init_tick	=	hbtick_init_tick,
 	.get_tick	=	hbtick_get_tick,
 	.get_compare	=	hbtick_get_compare,
@@ -437,10 +437,9 @@ static struct sparc64_tick_ops hbtick_operations = {
  * NOTE: On SUN5 systems the ticker interrupt comes in using 2
  *       interrupts, one at level14 and one with softint bit 0.
  */
-unsigned long timer_tick_offset;
-unsigned long timer_tick_compare;
+unsigned long timer_tick_offset __read_mostly;
 
-static unsigned long timer_ticks_per_nsec_quotient;
+static unsigned long timer_ticks_per_nsec_quotient __read_mostly;
 
 #define TICK_SIZE (tick_nsec / 1000)
 
@@ -464,7 +463,7 @@ static inline void timer_check_rtc(void)
 
 static irqreturn_t timer_interrupt(int irq, void *dev_id, struct pt_regs * regs)
 {
-	unsigned long ticks, pstate;
+	unsigned long ticks, compare, pstate;
 
 	write_seqlock(&xtime_lock);
 
@@ -483,14 +482,14 @@ static irqreturn_t timer_interrupt(int irq, void *dev_id, struct pt_regs * regs)
 				     : "=r" (pstate)
 				     : "i" (PSTATE_IE));
 
-		timer_tick_compare = tick_ops->add_compare(timer_tick_offset);
+		compare = tick_ops->add_compare(timer_tick_offset);
 		ticks = tick_ops->get_tick();
 
 		/* Restore PSTATE_IE. */
 		__asm__ __volatile__("wrpr	%0, 0x0, %%pstate"
 				     : /* no outputs */
 				     : "r" (pstate));
-	} while (time_after_eq(ticks, timer_tick_compare));
+	} while (time_after_eq(ticks, compare));
 
 	timer_check_rtc();
 
@@ -506,11 +505,6 @@ void timer_tick_interrupt(struct pt_regs *regs)
 
 	do_timer(regs);
 
-	/*
-	 * Only keep timer_tick_offset uptodate, but don't set TICK_CMPR.
-	 */
-	timer_tick_compare = tick_ops->get_compare() + timer_tick_offset;
-
 	timer_check_rtc();
 
 	write_sequnlock(&xtime_lock);
@@ -973,7 +967,7 @@ static void sparc64_start_timers(irqreturn_t (*cfunc)(int, void *, struct pt_reg
 	int err;
 
 	/* Register IRQ handler. */
-	err = request_irq(build_irq(0, 0, 0UL, 0UL), cfunc, SA_STATIC_ALLOC,
+	err = request_irq(build_irq(0, 0, 0UL, 0UL), cfunc, 0,
 			  "timer", NULL);
 
 	if (err) {
diff --git a/arch/sparc64/kernel/trampoline.S b/arch/sparc64/kernel/trampoline.S
index 2c8f9344b4e..3a145fc39cf 100644
--- a/arch/sparc64/kernel/trampoline.S
+++ b/arch/sparc64/kernel/trampoline.S
@@ -98,8 +98,9 @@ startup_continue:
 
 	sethi		%hi(prom_entry_lock), %g2
 1:	ldstub		[%g2 + %lo(prom_entry_lock)], %g1
+	membar		#StoreLoad | #StoreStore
 	brnz,pn		%g1, 1b
-	 membar		#StoreLoad | #StoreStore
+	 nop
 
 	sethi		%hi(p1275buf), %g2
 	or		%g2, %lo(p1275buf), %g2
diff --git a/arch/sparc64/kernel/traps.c b/arch/sparc64/kernel/traps.c
index a9f4596d7c2..100b0107c4b 100644
--- a/arch/sparc64/kernel/traps.c
+++ b/arch/sparc64/kernel/traps.c
@@ -2125,6 +2125,8 @@ void __init trap_init(void)
 	    TI_PCR != offsetof(struct thread_info, pcr_reg) ||
 	    TI_CEE_STUFF != offsetof(struct thread_info, cee_stuff) ||
 	    TI_PRE_COUNT != offsetof(struct thread_info, preempt_count) ||
+	    TI_NEW_CHILD != offsetof(struct thread_info, new_child) ||
+	    TI_SYS_NOERROR != offsetof(struct thread_info, syscall_noerror) ||
 	    TI_FPREGS != offsetof(struct thread_info, fpregs) ||
 	    (TI_FPREGS & (64 - 1)))
 		thread_info_offsets_are_bolixed_dave();
diff --git a/arch/sparc64/kernel/vmlinux.lds.S b/arch/sparc64/kernel/vmlinux.lds.S
index 382fd6798bb..950423da8a6 100644
--- a/arch/sparc64/kernel/vmlinux.lds.S
+++ b/arch/sparc64/kernel/vmlinux.lds.S
@@ -32,6 +32,8 @@ SECTIONS
   .data1   : { *(.data1) }
   . = ALIGN(64);
   .data.cacheline_aligned : { *(.data.cacheline_aligned) }
+  . = ALIGN(64);
+  .data.read_mostly : { *(.data.read_mostly) }
   _edata  =  .;
   PROVIDE (edata = .);
   .fixup   : { *(.fixup) }