linux-imx
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committed cfafae94038x
static LIST_HEAD(xen_pcpus);static int xen_pcpu_down(uint32_t cpu_id){ struct xen_platform_op op = { .cmd = XENPF_cpu_offline, .interface_version = XENPF_INTERFACE_VERSION, .u.cpu_ol.cpuid = cpu_id, }; return HYPERVISOR_dom0_op(&op); return HYPERVISOR_platform_op(&op);}static int xen_pcpu_up(uint32_t cpu_id){ struct xen_platform_op op = { .cmd = XENPF_cpu_online, .interface_version = XENPF_INTERFACE_VERSION, .u.cpu_ol.cpuid = cpu_id, }; return HYPERVISOR_dom0_op(&op); return HYPERVISOR_platform_op(&op);}static ssize_t show_online(struct device *dev, struct device_attribute *attr, char *buf){ struct pcpu *cpu = container_of(dev, struct pcpu, dev); return sprintf(buf, "%u\n", !!(cpu->flags & XEN_PCPU_FLAGS_ONLINE));}{ int ret; struct pcpu *pcpu = NULL; struct xenpf_pcpuinfo *info; struct xen_platform_op op = { .cmd = XENPF_get_cpuinfo, .interface_version = XENPF_INTERFACE_VERSION, .u.pcpu_info.xen_cpuid = cpu, }; ret = HYPERVISOR_dom0_op(&op); ret = HYPERVISOR_platform_op(&op); if (ret) return ret; info = &op.u.pcpu_info; if (max_cpu) *max_cpu = info->max_present; pcpu = get_pcpu(cpu); /* * For hypervisor non-presented cpu, return -ENODEV. */int xen_pcpu_id(uint32_t acpi_id){ int cpu_id = 0, max_id = 0; struct xen_platform_op op; op.cmd = XENPF_get_cpuinfo; while (cpu_id <= max_id) { op.u.pcpu_info.xen_cpuid = cpu_id; if (HYPERVISOR_dom0_op(&op)) { if (HYPERVISOR_platform_op(&op)) { cpu_id++; continue; } if (acpi_id == op.u.pcpu_info.acpi_id) return cpu_id; if (op.u.pcpu_info.max_present > max_id) max_id = op.u.pcpu_info.max_present; cpu_id++; }