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ia64/mca: Convert to hotplug state machine 

Install the callbacks via the state machine and let the core invoke
the callbacks on the already online CPUs.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: linux-ia64@vger.kernel.org
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: rt@linutronix.de
Link: http://lkml.kernel.org/r/20160906170457.32393-5-bigeasy@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Sebastian Andrzej Siewior 2016-09-06 19:04:40 +02:00 committed by Thomas Gleixner
parent a4fa9cc220
commit 6b8d642239
1 changed files with 4 additions and 22 deletions
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26
arch/ia64/kernel/mca.c
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@ -1890,7 +1890,7 @@ ia64_mca_cpu_init(void *cpu_data)
PAGE_KERNEL)));
}
static void ia64_mca_cmc_vector_adjust(void *dummy)
static int ia64_mca_cpu_online(unsigned int cpu)
{
unsigned long flags;
@ -1898,25 +1898,9 @@ static void ia64_mca_cmc_vector_adjust(void *dummy)
if (!cmc_polling_enabled)
ia64_mca_cmc_vector_enable(NULL);
local_irq_restore(flags);
return 0;
}
static int mca_cpu_callback(struct notifier_block *nfb,
unsigned long action,
void *hcpu)
{
switch (action) {
case CPU_ONLINE:
case CPU_ONLINE_FROZEN:
ia64_mca_cmc_vector_adjust(NULL);
break;
}
return NOTIFY_OK;
}
static struct notifier_block mca_cpu_notifier = {
.notifier_call = mca_cpu_callback
};
/*
* ia64_mca_init
*
@ -2111,15 +2095,13 @@ ia64_mca_late_init(void)
if (!mca_init)
return 0;
register_hotcpu_notifier(&mca_cpu_notifier);
/* Setup the CMCI/P vector and handler */
setup_timer(&cmc_poll_timer, ia64_mca_cmc_poll, 0UL);
/* Unmask/enable the vector */
cmc_polling_enabled = 0;
schedule_work(&cmc_enable_work);
cpuhp_setup_state(CPUHP_AP_ONLINE_DYN, "ia64/mca:online",
ia64_mca_cpu_online, NULL);
IA64_MCA_DEBUG("%s: CMCI/P setup and enabled.\n", __func__);
#ifdef CONFIG_ACPI