Merge branch 'cpus4096-for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

* 'cpus4096-for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (66 commits)
  x86: export vector_used_by_percpu_irq
  x86: use logical apicid in x2apic_cluster's x2apic_cpu_mask_to_apicid_and()
  sched: nominate preferred wakeup cpu, fix
  x86: fix lguest used_vectors breakage, -v2
  x86: fix warning in arch/x86/kernel/io_apic.c
  sched: fix warning in kernel/sched.c
  sched: move test_sd_parent() to an SMP section of sched.h
  sched: add SD_BALANCE_NEWIDLE at MC and CPU level for sched_mc>0
  sched: activate active load balancing in new idle cpus
  sched: bias task wakeups to preferred semi-idle packages
  sched: nominate preferred wakeup cpu
  sched: favour lower logical cpu number for sched_mc balance
  sched: framework for sched_mc/smt_power_savings=N
  sched: convert BALANCE_FOR_xx_POWER to inline functions
  x86: use possible_cpus=NUM to extend the possible cpus allowed
  x86: fix cpu_mask_to_apicid_and to include cpu_online_mask
  x86: update io_apic.c to the new cpumask code
  x86: Introduce topology_core_cpumask()/topology_thread_cpumask()
  x86: xen: use smp_call_function_many()
  x86: use work_on_cpu in x86/kernel/cpu/mcheck/mce_amd_64.c
  ...

Fixed up trivial conflict in kernel/time/tick-sched.c manually

1 files changed, 8 insertions, 7 deletions

diff --git a/arch/x86/kernel/irq_64.c b/arch/x86/kernel/irq_64.c
index a174a217eb1a..6383d50f82ea 100644
--- a/arch/x86/kernel/irq_64.c
+++ b/arch/x86/kernel/irq_64.c
@@ -80,16 +80,17 @@ asmlinkage unsigned int __irq_entry do_IRQ(struct pt_regs *regs)
 }
 
 #ifdef CONFIG_HOTPLUG_CPU
-void fixup_irqs(cpumask_t map)
+/* A cpu has been removed from cpu_online_mask.  Reset irq affinities. */
+void fixup_irqs(void)
 {
         unsigned int irq;
         static int warned;
         struct irq_desc *desc;
 
         for_each_irq_desc(irq, desc) {
-                cpumask_t mask;
                 int break_affinity = 0;
                 int set_affinity = 1;
+                const struct cpumask *affinity;
 
                 if (!desc)
                         continue;
@@ -99,23 +100,23 @@ void fixup_irqs(cpumask_t map)
                 /* interrupt's are disabled at this point */
                 spin_lock(&desc->lock);
 
+                affinity = &desc->affinity;
                 if (!irq_has_action(irq) ||
-                    cpus_equal(desc->affinity, map)) {
+                    cpumask_equal(affinity, cpu_online_mask)) {
                         spin_unlock(&desc->lock);
                         continue;
                 }
 
-                cpus_and(mask, desc->affinity, map);
-                if (cpus_empty(mask)) {
+                if (cpumask_any_and(affinity, cpu_online_mask) >= nr_cpu_ids) {
                         break_affinity = 1;
-                        mask = map;
+                        affinity = cpu_all_mask;
                 }
 
                 if (desc->chip->mask)
                         desc->chip->mask(irq);
 
                 if (desc->chip->set_affinity)
-                        desc->chip->set_affinity(irq, mask);
+                        desc->chip->set_affinity(irq, affinity);
                 else if (!(warned++))
                         set_affinity = 0;