Remove obsolete #include <linux/config.h>
[linux-2.6.git] / arch / i386 / kernel / smpboot.c
index bd0ca5c..6f5fea0 100644 (file)
@@ -34,7 +34,6 @@
 *              Rusty Russell   :       Hacked into shape for new "hotplug" boot process. */
 
 #include <linux/module.h>
-#include <linux/config.h>
 #include <linux/init.h>
 #include <linux/kernel.h>
 
@@ -52,6 +51,7 @@
 #include <asm/tlbflush.h>
 #include <asm/desc.h>
 #include <asm/arch_hooks.h>
+#include <asm/nmi.h>
 
 #include <mach_apic.h>
 #include <mach_wakecpu.h>
@@ -66,12 +66,6 @@ int smp_num_siblings = 1;
 EXPORT_SYMBOL(smp_num_siblings);
 #endif
 
-/* Package ID of each logical CPU */
-int phys_proc_id[NR_CPUS] __read_mostly = {[0 ... NR_CPUS-1] = BAD_APICID};
-
-/* Core ID of each logical CPU */
-int cpu_core_id[NR_CPUS] __read_mostly = {[0 ... NR_CPUS-1] = BAD_APICID};
-
 /* Last level cache ID of each logical CPU */
 int cpu_llc_id[NR_CPUS] __cpuinitdata = {[0 ... NR_CPUS-1] = BAD_APICID};
 
@@ -453,10 +447,12 @@ cpumask_t cpu_coregroup_map(int cpu)
        struct cpuinfo_x86 *c = cpu_data + cpu;
        /*
         * For perf, we return last level cache shared map.
-        * TBD: when power saving sched policy is added, we will return
-        *      cpu_core_map when power saving policy is enabled
+        * And for power savings, we return cpu_core_map
         */
-       return c->llc_shared_map;
+       if (sched_mc_power_savings || sched_smt_power_savings)
+               return cpu_core_map[cpu];
+       else
+               return c->llc_shared_map;
 }
 
 /* representing cpus for which sibling maps can be computed */
@@ -472,8 +468,8 @@ set_cpu_sibling_map(int cpu)
 
        if (smp_num_siblings > 1) {
                for_each_cpu_mask(i, cpu_sibling_setup_map) {
-                       if (phys_proc_id[cpu] == phys_proc_id[i] &&
-                           cpu_core_id[cpu] == cpu_core_id[i]) {
+                       if (c[cpu].phys_proc_id == c[i].phys_proc_id &&
+                           c[cpu].cpu_core_id == c[i].cpu_core_id) {
                                cpu_set(i, cpu_sibling_map[cpu]);
                                cpu_set(cpu, cpu_sibling_map[i]);
                                cpu_set(i, cpu_core_map[cpu]);
@@ -500,7 +496,7 @@ set_cpu_sibling_map(int cpu)
                        cpu_set(i, c[cpu].llc_shared_map);
                        cpu_set(cpu, c[i].llc_shared_map);
                }
-               if (phys_proc_id[cpu] == phys_proc_id[i]) {
+               if (c[cpu].phys_proc_id == c[i].phys_proc_id) {
                        cpu_set(i, cpu_core_map[cpu]);
                        cpu_set(cpu, cpu_core_map[i]);
                        /*
@@ -1055,6 +1051,7 @@ static int __cpuinit __smp_prepare_cpu(int cpu)
        struct warm_boot_cpu_info info;
        struct work_struct task;
        int     apicid, ret;
+       struct Xgt_desc_struct *cpu_gdt_descr = &per_cpu(cpu_gdt_descr, cpu);
 
        apicid = x86_cpu_to_apicid[cpu];
        if (apicid == BAD_APICID) {
@@ -1062,6 +1059,18 @@ static int __cpuinit __smp_prepare_cpu(int cpu)
                goto exit;
        }
 
+       /*
+        * the CPU isn't initialized at boot time, allocate gdt table here.
+        * cpu_init will initialize it
+        */
+       if (!cpu_gdt_descr->address) {
+               cpu_gdt_descr->address = get_zeroed_page(GFP_KERNEL);
+               if (!cpu_gdt_descr->address)
+                       printk(KERN_CRIT "CPU%d failed to allocate GDT\n", cpu);
+                       ret = -ENOMEM;
+                       goto exit;
+       }
+
        info.complete = &done;
        info.apicid = apicid;
        info.cpu = cpu;
@@ -1339,8 +1348,8 @@ remove_siblinginfo(int cpu)
                cpu_clear(cpu, cpu_sibling_map[sibling]);
        cpus_clear(cpu_sibling_map[cpu]);
        cpus_clear(cpu_core_map[cpu]);
-       phys_proc_id[cpu] = BAD_APICID;
-       cpu_core_id[cpu] = BAD_APICID;
+       c[cpu].phys_proc_id = 0;
+       c[cpu].cpu_core_id = 0;
        cpu_clear(cpu, cpu_sibling_setup_map);
 }