Merge upstream 2.6.13-rc3 into ieee80211 branch of netdev-2.6.

15 files changed, 372 insertions, 512 deletions

diff --git a/arch/sparc64/kernel/dtlb_backend.S b/arch/sparc64/kernel/dtlb_backend.S
index b73a3c858770..538522848ad4 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 eee516a71c14..d781f10adc52 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... */
@@ -553,13 +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 */
@@ -567,9 +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
@@ -581,19 +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
@@ -1569,11 +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
@@ -1657,18 +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
@@ -1686,11 +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
@@ -1698,7 +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
@@ -1714,11 +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
@@ -1726,7 +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
@@ -1735,12 +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
@@ -1760,7 +1730,7 @@ ret_sys_call:
 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
@@ -1775,7 +1745,7 @@ 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]
@@ -1788,8 +1758,9 @@ 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 424712577307..daa2fb93052c 100644
--- a/arch/sparc64/kernel/irq.c
+++ b/arch/sparc64/kernel/irq.c
@@ -71,31 +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
@@ -241,17 +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;
@@ -280,28 +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);
 }
 
@@ -319,26 +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)) {
                 /*
@@ -356,93 +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;
@@ -456,10 +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);
 
@@ -468,147 +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;
+        struct ino_bucket *bucket = __bucket(irq);
+        struct irqaction *action, **pp;
 
-        if ((bucket != &pil0_dummy_bucket) &&
-            (bucket < &ivector_table[0] ||
-             bucket >= &ivector_table[NUM_IVECS])) {
-                unsigned int *caller;
+        pp = irq_action + bucket->pil;
+        action = *pp;
+        if (unlikely(!action))
+                return NULL;
 
-                __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);
-
-        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);
 }
 
@@ -647,99 +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;
-}
-
-/* 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;
+        bp->flags |= IBF_INPROGRESS;
 
-        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
@@ -757,8 +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
 
@@ -773,63 +634,12 @@ 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();
 }
@@ -959,7 +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;
@@ -1104,7 +917,8 @@ 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;
 
@@ -1122,11 +936,13 @@ 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 bdac631cf011..bbf11f85dab1 100644
--- a/arch/sparc64/kernel/kprobes.c
+++ b/arch/sparc64/kernel/kprobes.c
@@ -433,3 +433,8 @@ 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 534320ef0db2..91ab466d6c66 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 53d333b4a4e8..52bf3431a422 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 5753175b94e6..6a182bb66281 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 52f14e399b1c..533104c7907d 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>
 
 /*
diff --git a/arch/sparc64/kernel/ptrace.c b/arch/sparc64/kernel/ptrace.c
index 80a76e2ad732..23ad839d113f 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/smp.c b/arch/sparc64/kernel/smp.c
index e5b9c7a27789..7e8e2919e186 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;
 
@@ -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 56cd96f4a5cd..9202d925a9ce 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);
diff --git a/arch/sparc64/kernel/sys32.S b/arch/sparc64/kernel/sys32.S
index 5a95e98c5317..5f9e4fae612e 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 a5e36a4c8924..bceb91a8a2bd 100644
--- a/arch/sparc64/kernel/systbls.S
+++ b/arch/sparc64/kernel/systbls.S
@@ -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
@@ -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 71b4e3807694..362b9c26871b 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/vmlinux.lds.S b/arch/sparc64/kernel/vmlinux.lds.S
index 382fd6798bb9..950423da8a6a 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) }