From 3e093f6a409dc7a5386a782d0a5d1a789dfeb098 Mon Sep 17 00:00:00 2001
From: Balazs Gerofi <bgerofi@riken.jp>
Date: Thu, 3 Nov 2016 16:10:29 +0900
Subject: [PATCH] sysfs: fix /sys/devices/system/node/online value

---
 executer/kernel/mcctrl/mcctrl.h      |  1 +
 executer/kernel/mcctrl/sysfs_files.c | 12 +++++++++++-
 2 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/executer/kernel/mcctrl/mcctrl.h b/executer/kernel/mcctrl/mcctrl.h
index 11d1b161..09e867a3 100644
--- a/executer/kernel/mcctrl/mcctrl.h
+++ b/executer/kernel/mcctrl/mcctrl.h
@@ -281,6 +281,7 @@ struct mcctrl_usrdata {
 	unsigned long cpu_online[CPU_LONGS];
 	struct ihk_cpu_info *cpu_info;
 	struct ihk_mem_info *mem_info;
+	nodemask_t numa_online;
 	struct list_head cpu_topology_list;
 	struct list_head node_topology_list;
 };
diff --git a/executer/kernel/mcctrl/sysfs_files.c b/executer/kernel/mcctrl/sysfs_files.c
index aeb024fa..f2c29827 100644
--- a/executer/kernel/mcctrl/sysfs_files.c
+++ b/executer/kernel/mcctrl/sysfs_files.c
@@ -658,6 +658,7 @@ out:
 static int setup_node_files(struct mcctrl_usrdata *udp)
 {
 	int error;
+	int node;
 	struct node_topology *p;
 	struct sysfsm_bitmap_param param;
 
@@ -669,10 +670,19 @@ static int setup_node_files(struct mcctrl_usrdata *udp)
 		goto out;
 	}
 
+	memset(&udp->numa_online, 0, sizeof(udp->numa_online));
+	for (node = 0; node < udp->mem_info->n_numa_nodes; ++node) {
+		node_set(node, udp->numa_online);
+	}
+
+	param.nbits = MAX_NUMNODES;
+	param.ptr = &udp->numa_online;
+	sysfsm_createf(udp->os, SYSFS_SNOOPING_OPS_pbl, &param, 0444,
+			"/sys/devices/system/node/online");
+
 	list_for_each_entry(p, &udp->node_topology_list, chain) {
 		struct sysfs_handle handle;
 		int cpu;
-		int node;
 		size_t offset = 0;
 		param.nbits = nr_cpumask_bits;
 		param.ptr = &p->cpumap;