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| author | Richard Cochran <rcochran@linutronix.de> | 2016-07-13 17:16:05 +0000 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2016-07-14 09:34:28 +0200 |
| commit | 6670a6d864653859229d2e921ea193a4a677dfea (patch) | |
| tree | 6d84ff6b5eb63ef7b60150901760ac9ab0f21f52 /drivers/irqchip/irq-gic-v3.c | |
| parent | 93131f7a9b5c261f9995b4a6cbd7dbbec1351d2f (diff) | |
| download | lwn-6670a6d864653859229d2e921ea193a4a677dfea.tar.gz lwn-6670a6d864653859229d2e921ea193a4a677dfea.zip | |
irqchip/gicv3: 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>
Reviewed-by: Sebastian Andrzej Siewior <bigeasy@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/20160713153333.163186301@linutronix.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'drivers/irqchip/irq-gic-v3.c')
| -rw-r--r-- | drivers/irqchip/irq-gic-v3.c | 22 |
1 files changed, 7 insertions, 15 deletions
diff --git a/drivers/irqchip/irq-gic-v3.c b/drivers/irqchip/irq-gic-v3.c index 2c5ba0e704bf..6fc56c3466b0 100644 --- a/drivers/irqchip/irq-gic-v3.c +++ b/drivers/irqchip/irq-gic-v3.c @@ -538,23 +538,13 @@ static void gic_cpu_init(void) } #ifdef CONFIG_SMP -static int gic_secondary_init(struct notifier_block *nfb, - unsigned long action, void *hcpu) + +static int gic_starting_cpu(unsigned int cpu) { - if (action == CPU_STARTING || action == CPU_STARTING_FROZEN) - gic_cpu_init(); - return NOTIFY_OK; + gic_cpu_init(); + return 0; } -/* - * Notifier for enabling the GIC CPU interface. Set an arbitrarily high - * priority because the GIC needs to be up before the ARM generic timers. - */ -static struct notifier_block gic_cpu_notifier = { - .notifier_call = gic_secondary_init, - .priority = 100, -}; - static u16 gic_compute_target_list(int *base_cpu, const struct cpumask *mask, unsigned long cluster_id) { @@ -634,7 +624,9 @@ static void gic_raise_softirq(const struct cpumask *mask, unsigned int irq) static void gic_smp_init(void) { set_smp_cross_call(gic_raise_softirq); - register_cpu_notifier(&gic_cpu_notifier); + cpuhp_setup_state_nocalls(CPUHP_AP_IRQ_GICV3_STARTING, + "AP_IRQ_GICV3_STARTING", gic_starting_cpu, + NULL); } static int gic_set_affinity(struct irq_data *d, const struct cpumask *mask_val, |