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Diffstat (limited to 'arch/powerpc/platforms/pseries/smp.c')
-rw-r--r--arch/powerpc/platforms/pseries/smp.c45
1 files changed, 5 insertions, 40 deletions
diff --git a/arch/powerpc/platforms/pseries/smp.c b/arch/powerpc/platforms/pseries/smp.c
index 9d8f8c8..1a231c3 100644
--- a/arch/powerpc/platforms/pseries/smp.c
+++ b/arch/powerpc/platforms/pseries/smp.c
@@ -37,7 +37,6 @@
#include <asm/paca.h>
#include <asm/time.h>
#include <asm/machdep.h>
-#include "xics.h"
#include <asm/cputable.h>
#include <asm/firmware.h>
#include <asm/system.h>
@@ -49,11 +48,12 @@
#include "plpar_wrappers.h"
#include "pseries.h"
+#include "xics.h"
/*
- * The primary thread of each non-boot processor is recorded here before
- * smp init.
+ * The Primary thread of each non-boot processor was started from the OF client
+ * interface by prom_hold_cpus and is spinning on secondary_hold_spinloop.
*/
static cpumask_t of_spin_map;
@@ -105,36 +105,6 @@ static inline int __devinit smp_startup_cpu(unsigned int lcpu)
}
#ifdef CONFIG_XICS
-static inline void smp_xics_do_message(int cpu, int msg)
-{
- set_bit(msg, &xics_ipi_message[cpu].value);
- mb();
- xics_cause_IPI(cpu);
-}
-
-static void smp_xics_message_pass(int target, int msg)
-{
- unsigned int i;
-
- if (target < NR_CPUS) {
- smp_xics_do_message(target, msg);
- } else {
- for_each_online_cpu(i) {
- if (target == MSG_ALL_BUT_SELF
- && i == smp_processor_id())
- continue;
- smp_xics_do_message(i, msg);
- }
- }
-}
-
-static int __init smp_xics_probe(void)
-{
- xics_request_IPIs();
-
- return cpus_weight(cpu_possible_map);
-}
-
static void __devinit smp_xics_setup_cpu(int cpu)
{
if (cpu != boot_cpuid)
@@ -191,8 +161,7 @@ static void __devinit smp_pSeries_kick_cpu(int nr)
static int smp_pSeries_cpu_bootable(unsigned int nr)
{
/* Special case - we inhibit secondary thread startup
- * during boot if the user requests it. Odd-numbered
- * cpus are assumed to be secondary threads.
+ * during boot if the user requests it.
*/
if (system_state < SYSTEM_RUNNING &&
cpu_has_feature(CPU_FTR_SMT) &&
@@ -229,11 +198,7 @@ static void __init smp_init_pseries(void)
/* Mark threads which are still spinning in hold loops. */
if (cpu_has_feature(CPU_FTR_SMT)) {
for_each_present_cpu(i) {
- if (i % 2 == 0)
- /*
- * Even-numbered logical cpus correspond to
- * primary threads.
- */
+ if (cpu_thread_in_core(i) == 0)
cpu_set(i, of_spin_map);
}
} else {