[PATCH] ppc64: global interrupt queue cleanup

Move the code to set global interrupt queue membership to xics.c,
and remove no longer needed extern declarations.  Also call it on
all cpus (even the boot cpu) to prepare for kexec.

Signed-off-by: Milton Miller <miltonm@bga.com>
Signed-off-by: R Sharada <sharada@in.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

2 files changed, 12 insertions, 11 deletions

diff --git a/arch/ppc64/kernel/pSeries_smp.c b/arch/ppc64/kernel/pSeries_smp.c
index c60d8cb2b84..fbad349ec58 100644
--- a/arch/ppc64/kernel/pSeries_smp.c
+++ b/arch/ppc64/kernel/pSeries_smp.c
@@ -326,13 +326,6 @@ static void __devinit smp_xics_setup_cpu(int cpu)
 
         cpu_clear(cpu, of_spin_map);
 
-        /*
-         * Put the calling processor into the GIQ.  This is really only
-         * necessary from a secondary thread as the OF start-cpu interface
-         * performs this function for us on primary threads.
-         */
-        rtas_set_indicator(GLOBAL_INTERRUPT_QUEUE,
-                (1UL << interrupt_server_size) - 1 - default_distrib_server, 1);
 }
 
 static DEFINE_SPINLOCK(timebase_lock);
diff --git a/arch/ppc64/kernel/xics.c b/arch/ppc64/kernel/xics.c
index eedd1d3c2a1..879f39b90a3 100644
--- a/arch/ppc64/kernel/xics.c
+++ b/arch/ppc64/kernel/xics.c
@@ -432,6 +432,7 @@ void xics_cause_IPI(int cpu)
 {
         ops->qirr_info(cpu, IPI_PRIORITY);
 }
+#endif /* CONFIG_SMP */
 
 void xics_setup_cpu(void)
 {
@@ -439,9 +440,17 @@ void xics_setup_cpu(void)
 
         ops->cppr_info(cpu, 0xff);
         iosync();
-}
 
-#endif /* CONFIG_SMP */
+        /*
+         * Put the calling processor into the GIQ.  This is really only
+         * necessary from a secondary thread as the OF start-cpu interface
+         * performs this function for us on primary threads.
+         *
+         * XXX: undo of teardown on kexec needs this too, as may hotplug
+         */
+        rtas_set_indicator(GLOBAL_INTERRUPT_QUEUE,
+                (1UL << interrupt_server_size) - 1 - default_distrib_server, 1);
+}
 
 void xics_init_IRQ(void)
 {
@@ -563,8 +572,7 @@ nextnode:
         for (; i < NR_IRQS; ++i)
                 get_irq_desc(i)->handler = &xics_pic;
 
-        ops->cppr_info(boot_cpuid, 0xff);
-        iosync();
+        xics_setup_cpu();
 
         ppc64_boot_msg(0x21, "XICS Done");
 }