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-rw-r--r--arch/powerpc/platforms/pseries/smp.c19
1 files changed, 19 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/pseries/smp.c b/arch/powerpc/platforms/pseries/smp.c
index 440000cc7130..b4886635972c 100644
--- a/arch/powerpc/platforms/pseries/smp.c
+++ b/arch/powerpc/platforms/pseries/smp.c
@@ -48,6 +48,7 @@
#include "plpar_wrappers.h"
#include "pseries.h"
#include "xics.h"
+#include "offline_states.h"
/*
@@ -84,6 +85,9 @@ static inline int __devinit smp_startup_cpu(unsigned int lcpu)
/* Fixup atomic count: it exited inside IRQ handler. */
task_thread_info(paca[lcpu].__current)->preempt_count = 0;
+ if (get_cpu_current_state(lcpu) == CPU_STATE_INACTIVE)
+ goto out;
+
/*
* If the RTAS start-cpu token does not exist then presume the
* cpu is already spinning.
@@ -98,6 +102,7 @@ static inline int __devinit smp_startup_cpu(unsigned int lcpu)
return 0;
}
+out:
return 1;
}
@@ -111,12 +116,16 @@ static void __devinit smp_xics_setup_cpu(int cpu)
vpa_init(cpu);
cpu_clear(cpu, of_spin_map);
+ set_cpu_current_state(cpu, CPU_STATE_ONLINE);
+ set_default_offline_state(cpu);
}
#endif /* CONFIG_XICS */
static void __devinit smp_pSeries_kick_cpu(int nr)
{
+ long rc;
+ unsigned long hcpuid;
BUG_ON(nr < 0 || nr >= NR_CPUS);
if (!smp_startup_cpu(nr))
@@ -128,6 +137,16 @@ static void __devinit smp_pSeries_kick_cpu(int nr)
* the processor will continue on to secondary_start
*/
paca[nr].cpu_start = 1;
+
+ set_preferred_offline_state(nr, CPU_STATE_ONLINE);
+
+ if (get_cpu_current_state(nr) == CPU_STATE_INACTIVE) {
+ hcpuid = get_hard_smp_processor_id(nr);
+ rc = plpar_hcall_norets(H_PROD, hcpuid);
+ if (rc != H_SUCCESS)
+ printk(KERN_ERR "Error: Prod to wake up processor %d\
+ Ret= %ld\n", nr, rc);
+ }
}
static int smp_pSeries_cpu_bootable(unsigned int nr)