powerpc/pseries: Update affinity for memory and cpus specified in a PRRN event

Extend the existing PRRN infrastructure to perform the actual affinity
updating for cpus and memory in addition to the device tree updating.
For cpus, dynamic affinity updating already appears to exist in the
kernel in the form of arch_update_cpu_topology(). For memory, we must
place a READD operation on the hotplug queue for any phandle included in
the PRRN event that is determined to be an LMB.

Signed-off-by: John Allen <jallen@linux.vnet.ibm.com>
Reviewed-by: Nathan Fontenot <nfont@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

1 files changed, 6 insertions, 1 deletions

diff --git a/arch/powerpc/kernel/rtasd.c b/arch/powerpc/kernel/rtasd.c
index 2bf1f9b5b34b..3650732639ed 100644
--- a/arch/powerpc/kernel/rtasd.c
+++ b/arch/powerpc/kernel/rtasd.c
@@ -21,6 +21,7 @@
 #include <linux/cpu.h>
 #include <linux/workqueue.h>
 #include <linux/slab.h>
+#include <linux/topology.h>
 
 #include <linux/uaccess.h>
 #include <asm/io.h>
@@ -282,6 +283,7 @@ static void prrn_work_fn(struct work_struct *work)
 	 * the RTAS event.
 	 */
 	pseries_devicetree_update(-prrn_update_scope);
+	arch_update_cpu_topology();
 }
 
 static DECLARE_WORK(prrn_work, prrn_work_fn);
@@ -434,7 +436,10 @@ static void do_event_scan(void)
 		}
 
 		if (error == 0) {
-			pSeries_log_error(logdata, ERR_TYPE_RTAS_LOG, 0);
+			if (rtas_error_type((struct rtas_error_log *)logdata) !=
+			    RTAS_TYPE_PRRN)
+				pSeries_log_error(logdata, ERR_TYPE_RTAS_LOG,
+						  0);
 			handle_rtas_event((struct rtas_error_log *)logdata);
 		}