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Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6

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* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6:
  [IA64] Avoid array overflow if there are too many cpus in SRAT table
  [IA64] Remove unlikely from cpu_is_offline
  [IA64] irq_ia64, use set_irq_chip
  [IA64] perfmon: Change vmalloc to vzalloc and drop memset.
  [IA64] eliminate race condition in smp_flush_tlb_mm
This commit is contained in:
Linus Torvalds 2011-01-10 14:52:44 -08:00
commit ecacc6c70c
5 changed files with 19 additions and 7 deletions
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6
arch/ia64/kernel/acpi.c
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@ -477,6 +477,12 @@ acpi_numa_processor_affinity_init(struct acpi_srat_cpu_affinity *pa)
if (!(pa->flags & ACPI_SRAT_CPU_ENABLED))
return;
if (srat_num_cpus >= ARRAY_SIZE(node_cpuid)) {
printk_once(KERN_WARNING
"node_cpuid[%d] is too small, may not be able to use all cpus\n",
ARRAY_SIZE(node_cpuid));
return;
}
pxm = get_processor_proximity_domain(pa);
/* record this node in proximity bitmap */

2
arch/ia64/kernel/irq_ia64.c
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@ -633,7 +633,7 @@ ia64_native_register_percpu_irq (ia64_vector vec, struct irqaction *action)
BUG_ON(bind_irq_vector(irq, vec, CPU_MASK_ALL));
desc = irq_desc + irq;
desc->status |= IRQ_PER_CPU;
desc->chip = &irq_type_ia64_lsapic;
set_irq_chip(irq, &irq_type_ia64_lsapic);
if (action)
setup_irq(irq, action);
set_irq_handler(irq, handle_percpu_irq);

3
arch/ia64/kernel/perfmon.c
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@ -829,10 +829,9 @@ pfm_rvmalloc(unsigned long size)
unsigned long addr;
size = PAGE_ALIGN(size);
mem = vmalloc(size);
mem = vzalloc(size);
if (mem) {
//printk("perfmon: CPU%d pfm_rvmalloc(%ld)=%p\n", smp_processor_id(), size, mem);
memset(mem, 0, size);
addr = (unsigned long)mem;
while (size > 0) {
pfm_reserve_page(addr);

13
arch/ia64/kernel/smp.c
View File

@ -293,6 +293,7 @@ smp_flush_tlb_all (void)
void
smp_flush_tlb_mm (struct mm_struct *mm)
{
cpumask_var_t cpus;
preempt_disable();
/* this happens for the common case of a single-threaded fork(): */
if (likely(mm == current->active_mm && atomic_read(&mm->mm_users) == 1))
@ -301,9 +302,15 @@ smp_flush_tlb_mm (struct mm_struct *mm)
preempt_enable();
return;
}
smp_call_function_many(mm_cpumask(mm),
(void (*)(void *))local_finish_flush_tlb_mm, mm, 1);
if (!alloc_cpumask_var(&cpus, GFP_ATOMIC)) {
smp_call_function((void (*)(void *))local_finish_flush_tlb_mm,
mm, 1);
} else {
cpumask_copy(cpus, mm_cpumask(mm));
smp_call_function_many(cpus,
(void (*)(void *))local_finish_flush_tlb_mm, mm, 1);
free_cpumask_var(cpus);
}
local_irq_disable();
local_finish_flush_tlb_mm(mm);
local_irq_enable();

2
arch/ia64/kernel/time.c
View File

@ -168,7 +168,7 @@ timer_interrupt (int irq, void *dev_id)
{
unsigned long new_itm;
if (unlikely(cpu_is_offline(smp_processor_id()))) {
if (cpu_is_offline(smp_processor_id())) {
return IRQ_HANDLED;
}