Merge tag 'trace-seq-buf-3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/roste...

[cascardo/linux.git] / arch / x86 / kernel / smpboot.c

diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c
index 4d2128a..7a8f584 100644 (file)
--- a/arch/x86/kernel/smpboot.c
+++ b/arch/x86/kernel/smpboot.c
@@ -99,7 +99,7 @@ EXPORT_PER_CPU_SYMBOL(cpu_core_map);
 DEFINE_PER_CPU_READ_MOSTLY(cpumask_var_t, cpu_llc_shared_map);
 
 /* Per CPU bogomips and other parameters */
-DEFINE_PER_CPU_SHARED_ALIGNED(struct cpuinfo_x86, cpu_info);
+DEFINE_PER_CPU_READ_MOSTLY(struct cpuinfo_x86, cpu_info);
 EXPORT_PER_CPU_SYMBOL(cpu_info);
 
 atomic_t init_deasserted;
@@ -1303,10 +1303,14 @@ static void __ref remove_cpu_from_maps(int cpu)
        numa_remove_cpu(cpu);
 }
 
+static DEFINE_PER_CPU(struct completion, die_complete);
+
 void cpu_disable_common(void)
 {
        int cpu = smp_processor_id();
 
+       init_completion(&per_cpu(die_complete, smp_processor_id()));
+
        remove_siblinginfo(cpu);
 
        /* It's now safe to remove this processor from the online map */
@@ -1316,8 +1320,6 @@ void cpu_disable_common(void)
        fixup_irqs();
 }
 
-static DEFINE_PER_CPU(struct completion, die_complete);
-
 int native_cpu_disable(void)
 {
        int ret;
@@ -1327,16 +1329,21 @@ int native_cpu_disable(void)
                return ret;
 
        clear_local_APIC();
-       init_completion(&per_cpu(die_complete, smp_processor_id()));
        cpu_disable_common();
 
        return 0;
 }
 
+void cpu_die_common(unsigned int cpu)
+{
+       wait_for_completion_timeout(&per_cpu(die_complete, cpu), HZ);
+}
+
 void native_cpu_die(unsigned int cpu)
 {
        /* We don't do anything here: idle task is faking death itself. */
-       wait_for_completion_timeout(&per_cpu(die_complete, cpu), HZ);
+
+       cpu_die_common(cpu);
 
        /* They ack this in play_dead() by setting CPU_DEAD */
        if (per_cpu(cpu_state, cpu) == CPU_DEAD) {