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[IA64] Adjust CMCI mask on CPU hotplug 

Currently CMCI mask of hot-added CPU is always disabled after CPU hotplug.
We should adjust this mask depending on CMC polling state.

Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Signed-off-by: Satoru Takeuchi <takeuchi_satoru@jp.fujitsu.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
This commit is contained in:
Hidetoshi Seto 2007-12-19 11:42:02 -08:00 committed by Tony Luck
parent 285fbd6633
commit ed5d4026ae
1 changed files with 33 additions and 0 deletions
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33
arch/ia64/kernel/mca.c
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@ -75,6 +75,7 @@
#include <linux/workqueue.h>
#include <linux/cpumask.h>
#include <linux/kdebug.h>
#include <linux/cpu.h>
#include <asm/delay.h>
#include <asm/machvec.h>
@ -1813,6 +1814,36 @@ ia64_mca_cpu_init(void *cpu_data)
PAGE_KERNEL));
}
static void __cpuinit ia64_mca_cmc_vector_adjust(void *dummy)
{
unsigned long flags;
local_irq_save(flags);
if (!cmc_polling_enabled)
ia64_mca_cmc_vector_enable(NULL);
local_irq_restore(flags);
}
static int __cpuinit mca_cpu_callback(struct notifier_block *nfb,
unsigned long action,
void *hcpu)
{
int hotcpu = (unsigned long) hcpu;
switch (action) {
case CPU_ONLINE:
case CPU_ONLINE_FROZEN:
smp_call_function_single(hotcpu, ia64_mca_cmc_vector_adjust,
NULL, 1, 0);
break;
}
return NOTIFY_OK;
}
static struct notifier_block mca_cpu_notifier __cpuinitdata = {
.notifier_call = mca_cpu_callback
};
/*
* ia64_mca_init
*
@ -1996,6 +2027,8 @@ ia64_mca_late_init(void)
if (!mca_init)
return 0;
register_hotcpu_notifier(&mca_cpu_notifier);
/* Setup the CMCI/P vector and handler */
init_timer(&cmc_poll_timer);
cmc_poll_timer.function = ia64_mca_cmc_poll;