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| author | Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com> | 2007-12-19 11:42:02 -0800 |
|---|---|---|
| committer | Tony Luck <tony.luck@intel.com> | 2007-12-19 12:30:47 -0800 |
| commit | ed5d4026ae6f51bec25e03a891a7d59c492577ab (patch) | |
| tree | 3eaaae505cfe2ef733c1356991e259da352da59c /arch/ia64 | |
| parent | 285fbd66330cd5899f4e607e3e65ab5921ddabf0 (diff) | |
| download | kernel_samsung_aries-ed5d4026ae6f51bec25e03a891a7d59c492577ab.zip kernel_samsung_aries-ed5d4026ae6f51bec25e03a891a7d59c492577ab.tar.gz kernel_samsung_aries-ed5d4026ae6f51bec25e03a891a7d59c492577ab.tar.bz2 | |
[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>
Diffstat (limited to 'arch/ia64')
| -rw-r--r-- | arch/ia64/kernel/mca.c | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/arch/ia64/kernel/mca.c b/arch/ia64/kernel/mca.c index 10b48cd..6dbf591 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; |