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| author | Anna-Maria Gleixner <anna-maria@linutronix.de> | 2016-11-27 00:13:41 +0100 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2016-12-02 00:52:37 +0100 |
| commit | 21647615db288d9dacad0de6a5df846b39d51bea (patch) | |
| tree | 359741a8f94c860a253dea168b87112a216a320d | |
| parent | cab7a7e5b6c5c2638b00c72559ff9fb715583c98 (diff) | |
| download | linux-21647615db288d9dacad0de6a5df846b39d51bea.tar.gz linux-21647615db288d9dacad0de6a5df846b39d51bea.tar.bz2 linux-21647615db288d9dacad0de6a5df846b39d51bea.zip | |
iommu/vt-d: Convert to hotplug state machine
Install the callbacks via the state machine.
Signed-off-by: Anna-Maria Gleixner <anna-maria@linutronix.de>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: Joerg Roedel <joro@8bytes.org>
Cc: iommu@lists.linux-foundation.org
Cc: rt@linutronix.de
Cc: David Woodhouse <dwmw2@infradead.org>
Link: http://lkml.kernel.org/r/20161126231350.10321-14-bigeasy@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
| -rw-r--r-- | drivers/iommu/intel-iommu.c | 24 | ||||
| -rw-r--r-- | include/linux/cpuhotplug.h | 1 |
2 files changed, 7 insertions, 18 deletions
diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c index a4407eabf0e6..fd7962560e56 100644 --- a/drivers/iommu/intel-iommu.c +++ b/drivers/iommu/intel-iommu.c @@ -4665,25 +4665,13 @@ static void free_all_cpu_cached_iovas(unsigned int cpu) } } -static int intel_iommu_cpu_notifier(struct notifier_block *nfb, - unsigned long action, void *v) +static int intel_iommu_cpu_dead(unsigned int cpu) { - unsigned int cpu = (unsigned long)v; - - switch (action) { - case CPU_DEAD: - case CPU_DEAD_FROZEN: - free_all_cpu_cached_iovas(cpu); - flush_unmaps_timeout(cpu); - break; - } - return NOTIFY_OK; + free_all_cpu_cached_iovas(cpu); + flush_unmaps_timeout(cpu); + return 0; } -static struct notifier_block intel_iommu_cpu_nb = { - .notifier_call = intel_iommu_cpu_notifier, -}; - static ssize_t intel_iommu_show_version(struct device *dev, struct device_attribute *attr, char *buf) @@ -4832,8 +4820,8 @@ int __init intel_iommu_init(void) bus_register_notifier(&pci_bus_type, &device_nb); if (si_domain && !hw_pass_through) register_memory_notifier(&intel_iommu_memory_nb); - register_hotcpu_notifier(&intel_iommu_cpu_nb); - + cpuhp_setup_state(CPUHP_IOMMU_INTEL_DEAD, "iommu/intel:dead", NULL, + intel_iommu_cpu_dead); intel_iommu_enabled = 1; return 0; diff --git a/include/linux/cpuhotplug.h b/include/linux/cpuhotplug.h index c7d0d76ef0ee..853f8176594d 100644 --- a/include/linux/cpuhotplug.h +++ b/include/linux/cpuhotplug.h @@ -40,6 +40,7 @@ enum cpuhp_state { CPUHP_PAGE_ALLOC_DEAD, CPUHP_NET_DEV_DEAD, CPUHP_PCI_XGENE_DEAD, + CPUHP_IOMMU_INTEL_DEAD, CPUHP_WORKQUEUE_PREP, CPUHP_POWER_NUMA_PREPARE, CPUHP_HRTIMERS_PREPARE, |