Merge branch 'percpu-cpumask-x86-for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

* 'percpu-cpumask-x86-for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (682 commits)
  percpu: fix spurious alignment WARN in legacy SMP percpu allocator
  percpu: generalize embedding first chunk setup helper
  percpu: more flexibility for @dyn_size of pcpu_setup_first_chunk()
  percpu: make x86 addr <-> pcpu ptr conversion macros generic
  linker script: define __per_cpu_load on all SMP capable archs
  x86: UV: remove uv_flush_tlb_others() WARN_ON
  percpu: finer grained locking to break deadlock and allow atomic free
  percpu: move fully free chunk reclamation into a work
  percpu: move chunk area map extension out of area allocation
  percpu: replace pcpu_realloc() with pcpu_mem_alloc() and pcpu_mem_free()
  x86, percpu: setup reserved percpu area for x86_64
  percpu, module: implement reserved allocation and use it for module percpu variables
  percpu: add an indirection ptr for chunk page map access
  x86: make embedding percpu allocator return excessive free space
  percpu: use negative for auto for pcpu_setup_first_chunk() arguments
  percpu: improve first chunk initial area map handling
  percpu: cosmetic renames in pcpu_setup_first_chunk()
  percpu: clean up percpu constants
  x86: un-__init fill_pud/pmd/pte
  x86: remove vestigial fix_ioremap prototypes
  ...

Manually merge conflicts in arch/ia64/kernel/irq_ia64.c
diff --git a/arch/ia64/kernel/irq_ia64.c b/arch/ia64/kernel/irq_ia64.c
index 977a6ef1..acc4d19 100644
--- a/arch/ia64/kernel/irq_ia64.c
+++ b/arch/ia64/kernel/irq_ia64.c
@@ -493,16 +493,15 @@
 	saved_tpr = ia64_getreg(_IA64_REG_CR_TPR);
 	ia64_srlz_d();
 	while (vector != IA64_SPURIOUS_INT_VECTOR) {
-		struct irq_desc *desc;
 		int irq = local_vector_to_irq(vector);
+		struct irq_desc *desc = irq_to_desc(irq);
 
-		desc = irq_desc + irq;
 		if (unlikely(IS_LOCAL_TLB_FLUSH(vector))) {
 			smp_local_flush_tlb();
 			kstat_incr_irqs_this_cpu(irq, desc);
-		} else if (unlikely(IS_RESCHEDULE(vector)))
+		} else if (unlikely(IS_RESCHEDULE(vector))) {
 			kstat_incr_irqs_this_cpu(irq, desc);
-		else {
+		} else {
 			ia64_setreg(_IA64_REG_CR_TPR, vector);
 			ia64_srlz_d();
 
@@ -553,16 +552,15 @@
 	  * Perform normal interrupt style processing
 	  */
 	while (vector != IA64_SPURIOUS_INT_VECTOR) {
-		struct irq_desc *desc;
 		int irq = local_vector_to_irq(vector);
-		desc = irq_desc + irq;
+		struct irq_desc *desc = irq_to_desc(irq);
 
 		if (unlikely(IS_LOCAL_TLB_FLUSH(vector))) {
 			smp_local_flush_tlb();
 			kstat_incr_irqs_this_cpu(irq, desc);
-		} else if (unlikely(IS_RESCHEDULE(vector)))
+		} else if (unlikely(IS_RESCHEDULE(vector))) {
 			kstat_incr_irqs_this_cpu(irq, desc);
-		else {
+		} else {
 			struct pt_regs *old_regs = set_irq_regs(NULL);
 
 			ia64_setreg(_IA64_REG_CR_TPR, vector);