diff options
Diffstat (limited to 'kernel/irq')
| -rw-r--r-- | kernel/irq/irqdesc.c | 29 | ||||
| -rw-r--r-- | kernel/irq/manage.c | 6 | ||||
| -rw-r--r-- | kernel/irq/pm.c | 2 |
3 files changed, 31 insertions, 6 deletions
diff --git a/kernel/irq/irqdesc.c b/kernel/irq/irqdesc.c index 192a302d6cf..20ecfb0984e 100644 --- a/kernel/irq/irqdesc.c +++ b/kernel/irq/irqdesc.c @@ -23,10 +23,35 @@ static struct lock_class_key irq_desc_lock_class; #if defined(CONFIG_SMP) +static int __init irq_affinity_setup(char *str) +{ + zalloc_cpumask_var(&irq_default_affinity, GFP_NOWAIT); + cpulist_parse(str, irq_default_affinity); + /* + * Set at least the boot cpu. We don't want to end up with + * bugreports caused by random comandline masks + */ + cpumask_set_cpu(smp_processor_id(), irq_default_affinity); + return 1; +} +__setup("irqaffinity=", irq_affinity_setup); + +extern struct cpumask hmp_slow_cpu_mask; + static void __init init_irq_default_affinity(void) { - alloc_cpumask_var(&irq_default_affinity, GFP_NOWAIT); - cpumask_setall(irq_default_affinity); +#ifdef CONFIG_CPUMASK_OFFSTACK + if (!irq_default_affinity) + zalloc_cpumask_var(&irq_default_affinity, GFP_NOWAIT); +#endif +#ifdef CONFIG_SCHED_HMP + if (!cpumask_empty(&hmp_slow_cpu_mask)) { + cpumask_copy(irq_default_affinity, &hmp_slow_cpu_mask); + return; + } +#endif + if (cpumask_empty(irq_default_affinity)) + cpumask_setall(irq_default_affinity); } #else static void __init init_irq_default_affinity(void) diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c index fa17855ca65..dc4db3228dc 100644 --- a/kernel/irq/manage.c +++ b/kernel/irq/manage.c @@ -555,9 +555,9 @@ int can_request_irq(unsigned int irq, unsigned long irqflags) return 0; if (irq_settings_can_request(desc)) { - if (desc->action) - if (irqflags & desc->action->flags & IRQF_SHARED) - canrequest =1; + if (!desc->action || + irqflags & desc->action->flags & IRQF_SHARED) + canrequest = 1; } irq_put_desc_unlock(desc, flags); return canrequest; diff --git a/kernel/irq/pm.c b/kernel/irq/pm.c index cb228bf2176..abcd6ca86cb 100644 --- a/kernel/irq/pm.c +++ b/kernel/irq/pm.c @@ -50,7 +50,7 @@ static void resume_irqs(bool want_early) bool is_early = desc->action && desc->action->flags & IRQF_EARLY_RESUME; - if (is_early != want_early) + if (!is_early && want_early) continue; raw_spin_lock_irqsave(&desc->lock, flags); |