diff options
author | Ingo Molnar <mingo@kernel.org> | 2016-11-11 08:25:07 +0100 |
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committer | Ingo Molnar <mingo@kernel.org> | 2016-11-11 08:25:07 +0100 |
commit | 4c8ee71620d734c8ad129fad085167f56f9ce351 (patch) | |
tree | 87208b0144aa664c96dd8b43bbcaaf1f25af606b /virt/kvm/eventfd.c | |
parent | c7faee2109f978f3ef826c48b7e60609061fda4f (diff) | |
parent | 27bcd37e0240bbe33f0efe244b5aad52104115b3 (diff) |
Merge branch 'linus' into locking/core, to pick up fixes
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'virt/kvm/eventfd.c')
-rw-r--r-- | virt/kvm/eventfd.c | 22 |
1 files changed, 19 insertions, 3 deletions
diff --git a/virt/kvm/eventfd.c b/virt/kvm/eventfd.c index f397e9b20370..a29786dd9522 100644 --- a/virt/kvm/eventfd.c +++ b/virt/kvm/eventfd.c @@ -42,6 +42,7 @@ #ifdef CONFIG_HAVE_KVM_IRQFD +static struct workqueue_struct *irqfd_cleanup_wq; static void irqfd_inject(struct work_struct *work) @@ -167,7 +168,7 @@ irqfd_deactivate(struct kvm_kernel_irqfd *irqfd) list_del_init(&irqfd->list); - schedule_work(&irqfd->shutdown); + queue_work(irqfd_cleanup_wq, &irqfd->shutdown); } int __attribute__((weak)) kvm_arch_set_irq_inatomic( @@ -554,7 +555,7 @@ kvm_irqfd_deassign(struct kvm *kvm, struct kvm_irqfd *args) * so that we guarantee there will not be any more interrupts on this * gsi once this deassign function returns. */ - flush_work(&irqfd->shutdown); + flush_workqueue(irqfd_cleanup_wq); return 0; } @@ -591,7 +592,7 @@ kvm_irqfd_release(struct kvm *kvm) * Block until we know all outstanding shutdown jobs have completed * since we do not take a kvm* reference. */ - flush_work(&irqfd->shutdown); + flush_workqueue(irqfd_cleanup_wq); } @@ -621,8 +622,23 @@ void kvm_irq_routing_update(struct kvm *kvm) spin_unlock_irq(&kvm->irqfds.lock); } +/* + * create a host-wide workqueue for issuing deferred shutdown requests + * aggregated from all vm* instances. We need our own isolated + * queue to ease flushing work items when a VM exits. + */ +int kvm_irqfd_init(void) +{ + irqfd_cleanup_wq = alloc_workqueue("kvm-irqfd-cleanup", 0, 0); + if (!irqfd_cleanup_wq) + return -ENOMEM; + + return 0; +} + void kvm_irqfd_exit(void) { + destroy_workqueue(irqfd_cleanup_wq); } #endif |