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Diffstat (limited to 'arch/x86/kernel/smpboot.c')
-rw-r--r--arch/x86/kernel/smpboot.c15
1 files changed, 11 insertions, 4 deletions
diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c
index 2d5200e56357..668d8f2a8781 100644
--- a/arch/x86/kernel/smpboot.c
+++ b/arch/x86/kernel/smpboot.c
@@ -102,8 +102,6 @@ DEFINE_PER_CPU_READ_MOSTLY(cpumask_var_t, cpu_llc_shared_map);
102DEFINE_PER_CPU_SHARED_ALIGNED(struct cpuinfo_x86, cpu_info); 102DEFINE_PER_CPU_SHARED_ALIGNED(struct cpuinfo_x86, cpu_info);
103EXPORT_PER_CPU_SYMBOL(cpu_info); 103EXPORT_PER_CPU_SYMBOL(cpu_info);
104 104
105static DEFINE_PER_CPU(struct completion, die_complete);
106
107atomic_t init_deasserted; 105atomic_t init_deasserted;
108 106
109/* 107/*
@@ -1305,10 +1303,14 @@ static void __ref remove_cpu_from_maps(int cpu)
1305 numa_remove_cpu(cpu); 1303 numa_remove_cpu(cpu);
1306} 1304}
1307 1305
1306static DEFINE_PER_CPU(struct completion, die_complete);
1307
1308void cpu_disable_common(void) 1308void cpu_disable_common(void)
1309{ 1309{
1310 int cpu = smp_processor_id(); 1310 int cpu = smp_processor_id();
1311 1311
1312 init_completion(&per_cpu(die_complete, smp_processor_id()));
1313
1312 remove_siblinginfo(cpu); 1314 remove_siblinginfo(cpu);
1313 1315
1314 /* It's now safe to remove this processor from the online map */ 1316 /* It's now safe to remove this processor from the online map */
@@ -1327,16 +1329,21 @@ int native_cpu_disable(void)
1327 return ret; 1329 return ret;
1328 1330
1329 clear_local_APIC(); 1331 clear_local_APIC();
1330 init_completion(&per_cpu(die_complete, smp_processor_id()));
1331 cpu_disable_common(); 1332 cpu_disable_common();
1332 1333
1333 return 0; 1334 return 0;
1334} 1335}
1335 1336
1337void cpu_die_common(unsigned int cpu)
1338{
1339 wait_for_completion_timeout(&per_cpu(die_complete, cpu), HZ);
1340}
1341
1336void native_cpu_die(unsigned int cpu) 1342void native_cpu_die(unsigned int cpu)
1337{ 1343{
1338 /* We don't do anything here: idle task is faking death itself. */ 1344 /* We don't do anything here: idle task is faking death itself. */
1339 wait_for_completion_timeout(&per_cpu(die_complete, cpu), HZ); 1345
1346 cpu_die_common(cpu);
1340 1347
1341 /* They ack this in play_dead() by setting CPU_DEAD */ 1348 /* They ack this in play_dead() by setting CPU_DEAD */
1342 if (per_cpu(cpu_state, cpu) == CPU_DEAD) { 1349 if (per_cpu(cpu_state, cpu) == CPU_DEAD) {