diff options
| -rw-r--r-- | arch/powerpc/include/asm/smp.h | 1 | ||||
| -rw-r--r-- | arch/powerpc/kernel/smp.c | 12 |
2 files changed, 12 insertions, 1 deletions
diff --git a/arch/powerpc/include/asm/smp.h b/arch/powerpc/include/asm/smp.h index ebc24dc5b1a..ce8e2bdf84e 100644 --- a/arch/powerpc/include/asm/smp.h +++ b/arch/powerpc/include/asm/smp.h @@ -65,6 +65,7 @@ int generic_cpu_disable(void); void generic_cpu_die(unsigned int cpu); void generic_mach_cpu_die(void); void generic_set_cpu_dead(unsigned int cpu); +void generic_set_cpu_up(unsigned int cpu); int generic_check_cpu_restart(unsigned int cpu); #endif diff --git a/arch/powerpc/kernel/smp.c b/arch/powerpc/kernel/smp.c index 8d4214afc21..a51ed205016 100644 --- a/arch/powerpc/kernel/smp.c +++ b/arch/powerpc/kernel/smp.c @@ -102,7 +102,7 @@ int __devinit smp_generic_kick_cpu(int nr) * Ok it's not there, so it might be soft-unplugged, let's * try to bring it back */ - per_cpu(cpu_state, nr) = CPU_UP_PREPARE; + generic_set_cpu_up(nr); smp_wmb(); smp_send_reschedule(nr); #endif /* CONFIG_HOTPLUG_CPU */ @@ -413,6 +413,16 @@ void generic_set_cpu_dead(unsigned int cpu) per_cpu(cpu_state, cpu) = CPU_DEAD; } +/* + * The cpu_state should be set to CPU_UP_PREPARE in kick_cpu(), otherwise + * the cpu_state is always CPU_DEAD after calling generic_set_cpu_dead(), + * which makes the delay in generic_cpu_die() not happen. + */ +void generic_set_cpu_up(unsigned int cpu) +{ + per_cpu(cpu_state, cpu) = CPU_UP_PREPARE; +} + int generic_check_cpu_restart(unsigned int cpu) { return per_cpu(cpu_state, cpu) == CPU_UP_PREPARE; |