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authorHidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>2007-12-19 11:42:02 -0800
committerTony Luck <tony.luck@intel.com>2007-12-19 12:30:47 -0800
commited5d4026ae6f51bec25e03a891a7d59c492577ab (patch)
tree3eaaae505cfe2ef733c1356991e259da352da59c
parent285fbd66330cd5899f4e607e3e65ab5921ddabf0 (diff)
downloadlinux-sh-ed5d4026ae6f51bec25e03a891a7d59c492577ab.tar.gz
[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>
-rw-r--r--arch/ia64/kernel/mca.c33
1 files changed, 33 insertions, 0 deletions
diff --git a/arch/ia64/kernel/mca.c b/arch/ia64/kernel/mca.c
index 10b48cd15a87..6dbf5919d2d0 100644
--- a/arch/ia64/kernel/mca.c
+++ b/arch/ia64/kernel/mca.c
@@ -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;