xen/cpufreq: move "init" flag into common structure

AMD cpufreq cores will be intialized in two modes, legacy P-state mode,
and CPPC mode. So "init" flag shall be extracted from px-specific
"struct xen_processor_perf", and placed in the common
"struct processor_pminfo". Otherwise, later when introducing a new
sub-hypercall to propagate CPPC data, we need to pass irrelevant px-specific
"struct xen_processor_perf" to just set init flag.

Signed-off-by: Penny Zheng <Penny.Zheng@amd.com>
Acked-by: Jan Beulich <jbeulich@suse.com>

xen/drivers/acpi/pmstat.c

@@ -237,7 +237,7 @@ int do_get_pm_info(struct xen_sysctl_get_pmstat *op)
             return -ENODEV;
         if ( hwp_active() )
             return -EOPNOTSUPP;
-        if ( !pmpt || !(pmpt->perf.init & XEN_PX_INIT) )
+        if ( !pmpt || !(pmpt->init & XEN_PX_INIT) )
             return -EINVAL;
         break;
     default:
@@ -635,7 +635,7 @@ int do_pm_op(struct xen_sysctl_pm_op *op)
     case CPUFREQ_PARA:
         if ( !(xen_processor_pmbits & XEN_PROCESSOR_PM_PX) )
             return -ENODEV;
-        if ( !pmpt || !(pmpt->perf.init & XEN_PX_INIT) )
+        if ( !pmpt || !(pmpt->init & XEN_PX_INIT) )
             return -EINVAL;
         break;
     }

xen/drivers/cpufreq/cpufreq.c

@@ -209,7 +209,7 @@ int cpufreq_add_cpu(unsigned int cpu)
 
     perf = &processor_pminfo[cpu]->perf;
 
-    if ( !(perf->init & XEN_PX_INIT) )
+    if ( !(processor_pminfo[cpu]->init & XEN_PX_INIT) )
         return -EINVAL;
 
     if (!cpufreq_driver.init)
@@ -373,7 +373,7 @@ int cpufreq_del_cpu(unsigned int cpu)
 
     perf = &processor_pminfo[cpu]->perf;
 
-    if ( !(perf->init & XEN_PX_INIT) )
+    if ( !(processor_pminfo[cpu]->init & XEN_PX_INIT) )
         return -EINVAL;
 
     if (!per_cpu(cpufreq_cpu_policy, cpu))
@@ -570,7 +570,7 @@ int set_px_pminfo(uint32_t acpi_id, struct xen_processor_performance *perf)
         if ( cpufreq_verbose )
             print_PPC(pxpt->platform_limit);
 
-        if ( pxpt->init == XEN_PX_INIT )
+        if ( pmpt->init == XEN_PX_INIT )
         {
             ret = cpufreq_limit_change(cpu);
             goto out;
@@ -579,7 +579,7 @@ int set_px_pminfo(uint32_t acpi_id, struct xen_processor_performance *perf)
 
     if ( perf->flags == ( XEN_PX_PCT | XEN_PX_PSS | XEN_PX_PSD | XEN_PX_PPC ) )
     {
-        pxpt->init = XEN_PX_INIT;
+        pmpt->init = XEN_PX_INIT;
 
         ret = cpufreq_cpu_init(cpu);
         goto out;

xen/include/acpi/cpufreq/processor_perf.h

@@ -27,14 +27,14 @@ struct processor_performance {
     struct xen_processor_px *states;
     struct xen_psd_package domain_info;
     uint32_t shared_type;
-
-    uint32_t init;
 };
 
 struct processor_pminfo {
     uint32_t acpi_id;
     uint32_t id;
     struct processor_performance    perf;
+
+    uint32_t init;
 };
 
 extern struct processor_pminfo *processor_pminfo[NR_CPUS];