diff options
Diffstat (limited to 'drivers/xen')
| -rw-r--r-- | drivers/xen/pcpu.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/xen/pcpu.c b/drivers/xen/pcpu.c index fd3a644b0855..b3e3d1bb37f3 100644 --- a/drivers/xen/pcpu.c +++ b/drivers/xen/pcpu.c @@ -58,6 +58,7 @@ struct pcpu { struct list_head list; struct device dev; uint32_t cpu_id; + uint32_t acpi_id; uint32_t flags; }; @@ -249,6 +250,7 @@ static struct pcpu *create_and_register_pcpu(struct xenpf_pcpuinfo *info) INIT_LIST_HEAD(&pcpu->list); pcpu->cpu_id = info->xen_cpuid; + pcpu->acpi_id = info->acpi_id; pcpu->flags = info->flags; /* Need hold on xen_pcpu_lock before pcpu list manipulations */ @@ -381,3 +383,21 @@ err1: return ret; } arch_initcall(xen_pcpu_init); + +#ifdef CONFIG_ACPI +bool __init xen_processor_present(uint32_t acpi_id) +{ + const struct pcpu *pcpu; + bool online = false; + + mutex_lock(&xen_pcpu_lock); + list_for_each_entry(pcpu, &xen_pcpus, list) + if (pcpu->acpi_id == acpi_id) { + online = pcpu->flags & XEN_PCPU_FLAGS_ONLINE; + break; + } + mutex_unlock(&xen_pcpu_lock); + + return online; +} +#endif |