diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/powerpc/platforms/pseries/hotplug-cpu.c | 17 |
1 files changed, 11 insertions, 6 deletions
diff --git a/arch/powerpc/platforms/pseries/hotplug-cpu.c b/arch/powerpc/platforms/pseries/hotplug-cpu.c index 12864d75126d..e78e8ac95550 100644 --- a/arch/powerpc/platforms/pseries/hotplug-cpu.c +++ b/arch/powerpc/platforms/pseries/hotplug-cpu.c @@ -64,6 +64,8 @@ static void pSeries_mach_cpu_die(void) for(;;); } +static int qcss_tok; /* query-cpu-stopped-state token */ + /* Get state of physical CPU. * Return codes: * 0 - The processor is in the RTAS stopped state @@ -74,12 +76,8 @@ static void pSeries_mach_cpu_die(void) */ static int query_cpu_stopped(unsigned int pcpu) { - int cpu_status; - int status, qcss_tok; + int cpu_status, status; - qcss_tok = rtas_token("query-cpu-stopped-state"); - if (qcss_tok == RTAS_UNKNOWN_SERVICE) - return -1; status = rtas_call(qcss_tok, 1, 2, &cpu_status, pcpu); if (status != 0) { printk(KERN_ERR @@ -254,9 +252,16 @@ static struct notifier_block pSeries_smp_nb = { static int __init pseries_cpu_hotplug_init(void) { rtas_stop_self_args.token = rtas_token("stop-self"); + qcss_tok = rtas_token("query-cpu-stopped-state"); - ppc_md.cpu_die = pSeries_mach_cpu_die; + if (rtas_stop_self_args.token == RTAS_UNKNOWN_SERVICE || + qcss_tok == RTAS_UNKNOWN_SERVICE) { + printk(KERN_INFO "CPU Hotplug not supported by firmware " + "- disabling.\n"); + return 0; + } + ppc_md.cpu_die = pSeries_mach_cpu_die; smp_ops->cpu_disable = pSeries_cpu_disable; smp_ops->cpu_die = pSeries_cpu_die; |