diff options
| -rw-r--r-- | include/linux/kvm_host.h | 2 | ||||
| -rw-r--r-- | virt/kvm/kvm_main.c | 15 |
2 files changed, 15 insertions, 2 deletions
diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index 3554e48406e4..3b40f8d68fbb 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -1435,6 +1435,8 @@ int kvm_arch_pm_notifier(struct kvm *kvm, unsigned long state); #ifdef __KVM_HAVE_ARCH_VCPU_DEBUGFS void kvm_arch_create_vcpu_debugfs(struct kvm_vcpu *vcpu, struct dentry *debugfs_dentry); +#else +static inline void kvm_create_vcpu_debugfs(struct kvm_vcpu *vcpu) {} #endif int kvm_arch_hardware_enable(void); diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c index 45188d11812c..da263c370d00 100644 --- a/virt/kvm/kvm_main.c +++ b/virt/kvm/kvm_main.c @@ -3822,9 +3822,18 @@ static int create_vcpu_fd(struct kvm_vcpu *vcpu) return anon_inode_getfd(name, &kvm_vcpu_fops, vcpu, O_RDWR | O_CLOEXEC); } +#ifdef __KVM_HAVE_ARCH_VCPU_DEBUGFS +static int vcpu_get_pid(void *data, u64 *val) +{ + struct kvm_vcpu *vcpu = (struct kvm_vcpu *) data; + *val = pid_nr(rcu_access_pointer(vcpu->pid)); + return 0; +} + +DEFINE_SIMPLE_ATTRIBUTE(vcpu_get_pid_fops, vcpu_get_pid, NULL, "%llu\n"); + static void kvm_create_vcpu_debugfs(struct kvm_vcpu *vcpu) { -#ifdef __KVM_HAVE_ARCH_VCPU_DEBUGFS struct dentry *debugfs_dentry; char dir_name[ITOA_MAX_LEN * 2]; @@ -3834,10 +3843,12 @@ static void kvm_create_vcpu_debugfs(struct kvm_vcpu *vcpu) snprintf(dir_name, sizeof(dir_name), "vcpu%d", vcpu->vcpu_id); debugfs_dentry = debugfs_create_dir(dir_name, vcpu->kvm->debugfs_dentry); + debugfs_create_file("pid", 0444, debugfs_dentry, vcpu, + &vcpu_get_pid_fops); kvm_arch_create_vcpu_debugfs(vcpu, debugfs_dentry); -#endif } +#endif /* * Creates some virtual cpus. Good luck creating more than one. |