diff options
Diffstat (limited to 'arch/x86_64/kernel/irq.c')
| -rw-r--r-- | arch/x86_64/kernel/irq.c | 32 |
1 files changed, 29 insertions, 3 deletions
diff --git a/arch/x86_64/kernel/irq.c b/arch/x86_64/kernel/irq.c index 3eaceac32481..39cb3fa83ebb 100644 --- a/arch/x86_64/kernel/irq.c +++ b/arch/x86_64/kernel/irq.c @@ -144,17 +144,43 @@ void fixup_irqs(cpumask_t map) for (irq = 0; irq < NR_IRQS; irq++) { cpumask_t mask; + int break_affinity = 0; + int set_affinity = 1; + if (irq == 2) continue; + /* interrupt's are disabled at this point */ + spin_lock(&irq_desc[irq].lock); + + if (!irq_has_action(irq) || + cpus_equal(irq_desc[irq].affinity, map)) { + spin_unlock(&irq_desc[irq].lock); + continue; + } + cpus_and(mask, irq_desc[irq].affinity, map); - if (any_online_cpu(mask) == NR_CPUS) { - printk("Breaking affinity for irq %i\n", irq); + if (cpus_empty(mask)) { + break_affinity = 1; mask = map; } + + if (irq_desc[irq].chip->mask) + irq_desc[irq].chip->mask(irq); + if (irq_desc[irq].chip->set_affinity) irq_desc[irq].chip->set_affinity(irq, mask); - else if (irq_desc[irq].action && !(warned++)) + else if (!(warned++)) + set_affinity = 0; + + if (irq_desc[irq].chip->unmask) + irq_desc[irq].chip->unmask(irq); + + spin_unlock(&irq_desc[irq].lock); + + if (break_affinity && set_affinity) + printk("Broke affinity for irq %i\n", irq); + else if (!set_affinity) printk("Cannot set affinity for irq %i\n", irq); } |