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author | Richard Cochran <rcochran@linutronix.de> | 2016-07-13 17:16:07 +0000 |
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committer | Ingo Molnar <mingo@kernel.org> | 2016-07-14 09:34:29 +0200 |
commit | cb5ff2d245c1023f1004eca73038b2cae87bcc6a (patch) | |
tree | 406e01752f5c93fcb0fe9bf7f0aead675a6bbff5 | |
parent | 6c034d1736384c23ea97509e36e84f35f4a9b23c (diff) | |
download | op-kernel-dev-cb5ff2d245c1023f1004eca73038b2cae87bcc6a.zip op-kernel-dev-cb5ff2d245c1023f1004eca73038b2cae87bcc6a.tar.gz |
irqchip/armada-370-xp: Convert to hotplug state machine
Install the callbacks via the state machine.
Signed-off-by: Richard Cochran <rcochran@linutronix.de>
Signed-off-by: Anna-Maria Gleixner <anna-maria@linutronix.de>
Acked-by: Jason Cooper <jason@lakedaemon.net>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: rt@linutronix.de
Link: http://lkml.kernel.org/r/20160713153333.330661455@linutronix.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
-rw-r--r-- | drivers/irqchip/irq-armada-370-xp.c | 44 | ||||
-rw-r--r-- | include/linux/cpuhotplug.h | 2 |
2 files changed, 17 insertions, 29 deletions
diff --git a/drivers/irqchip/irq-armada-370-xp.c b/drivers/irqchip/irq-armada-370-xp.c index e7dc6cb..e2b8fee 100644 --- a/drivers/irqchip/irq-armada-370-xp.c +++ b/drivers/irqchip/irq-armada-370-xp.c @@ -344,40 +344,22 @@ static void armada_mpic_send_doorbell(const struct cpumask *mask, writel((map << 8) | irq, main_int_base + ARMADA_370_XP_SW_TRIG_INT_OFFS); } +#endif -static int armada_xp_mpic_secondary_init(struct notifier_block *nfb, - unsigned long action, void *hcpu) +static int armada_xp_mpic_starting_cpu(unsigned int cpu) { - if (action == CPU_STARTING || action == CPU_STARTING_FROZEN) { - armada_xp_mpic_perf_init(); - armada_xp_mpic_smp_cpu_init(); - } - - return NOTIFY_OK; + armada_xp_mpic_perf_init(); + armada_xp_mpic_smp_cpu_init(); + return 0; } -static struct notifier_block armada_370_xp_mpic_cpu_notifier = { - .notifier_call = armada_xp_mpic_secondary_init, - .priority = 100, -}; - -static int mpic_cascaded_secondary_init(struct notifier_block *nfb, - unsigned long action, void *hcpu) +static int mpic_cascaded_starting_cpu(unsigned int cpu) { - if (action == CPU_STARTING || action == CPU_STARTING_FROZEN) { - armada_xp_mpic_perf_init(); - enable_percpu_irq(parent_irq, IRQ_TYPE_NONE); - } - - return NOTIFY_OK; + armada_xp_mpic_perf_init(); + enable_percpu_irq(parent_irq, IRQ_TYPE_NONE); + return 0; } -static struct notifier_block mpic_cascaded_cpu_notifier = { - .notifier_call = mpic_cascaded_secondary_init, - .priority = 100, -}; -#endif /* CONFIG_SMP */ - static const struct irq_domain_ops armada_370_xp_mpic_irq_ops = { .map = armada_370_xp_mpic_irq_map, .xlate = irq_domain_xlate_onecell, @@ -595,11 +577,15 @@ static int __init armada_370_xp_mpic_of_init(struct device_node *node, set_handle_irq(armada_370_xp_handle_irq); #ifdef CONFIG_SMP set_smp_cross_call(armada_mpic_send_doorbell); - register_cpu_notifier(&armada_370_xp_mpic_cpu_notifier); + cpuhp_setup_state_nocalls(CPUHP_AP_IRQ_ARMADA_XP_STARTING, + "AP_IRQ_ARMADA_XP_STARTING", + armada_xp_mpic_starting_cpu, NULL); #endif } else { #ifdef CONFIG_SMP - register_cpu_notifier(&mpic_cascaded_cpu_notifier); + cpuhp_setup_state_nocalls(CPUHP_AP_IRQ_ARMADA_CASC_STARTING, + "AP_IRQ_ARMADA_CASC_STARTING", + mpic_cascaded_starting_cpu, NULL); #endif irq_set_chained_handler(parent_irq, armada_370_xp_mpic_handle_cascade_irq); diff --git a/include/linux/cpuhotplug.h b/include/linux/cpuhotplug.h index 62ab4ff..3a08ab9 100644 --- a/include/linux/cpuhotplug.h +++ b/include/linux/cpuhotplug.h @@ -12,6 +12,8 @@ enum cpuhp_state { CPUHP_AP_IRQ_GIC_STARTING, CPUHP_AP_IRQ_GICV3_STARTING, CPUHP_AP_IRQ_HIP04_STARTING, + CPUHP_AP_IRQ_ARMADA_XP_STARTING, + CPUHP_AP_IRQ_ARMADA_CASC_STARTING, CPUHP_AP_NOTIFY_STARTING, CPUHP_AP_ONLINE, CPUHP_TEARDOWN_CPU, |