2 files changed, 10 insertions, 8 deletions

diff --git a/kernel/kthread.c b/kernel/kthread.c
index 087d18d771b5..ebebbcf3c5de 100644
--- a/kernel/kthread.c
+++ b/kernel/kthread.c
@@ -20,6 +20,7 @@
 #include <linux/freezer.h>
 #include <linux/ptrace.h>
 #include <linux/uaccess.h>
+#include <linux/numa.h>
 #include <trace/events/sched.h>
 
 static DEFINE_SPINLOCK(kthread_create_lock);
@@ -675,7 +676,7 @@ __kthread_create_worker(int cpu, unsigned int flags,
 {
         struct kthread_worker *worker;
         struct task_struct *task;
-        int node = -1;
+        int node = NUMA_NO_NODE;
 
         worker = kzalloc(sizeof(*worker), GFP_KERNEL);
         if (!worker)
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index 310d0637fe4b..0e6a0ef129c5 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -1160,7 +1160,7 @@ void init_numa_balancing(unsigned long clone_flags, struct task_struct *p)
 
         /* New address space, reset the preferred nid */
         if (!(clone_flags & CLONE_VM)) {
-                p->numa_preferred_nid = -1;
+                p->numa_preferred_nid = NUMA_NO_NODE;
                 return;
         }
 
@@ -1180,13 +1180,13 @@ void init_numa_balancing(unsigned long clone_flags, struct task_struct *p)
 
 static void account_numa_enqueue(struct rq *rq, struct task_struct *p)
 {
-        rq->nr_numa_running += (p->numa_preferred_nid != -1);
+        rq->nr_numa_running += (p->numa_preferred_nid != NUMA_NO_NODE);
         rq->nr_preferred_running += (p->numa_preferred_nid == task_node(p));
 }
 
 static void account_numa_dequeue(struct rq *rq, struct task_struct *p)
 {
-        rq->nr_numa_running -= (p->numa_preferred_nid != -1);
+        rq->nr_numa_running -= (p->numa_preferred_nid != NUMA_NO_NODE);
         rq->nr_preferred_running -= (p->numa_preferred_nid == task_node(p));
 }
 
@@ -1400,7 +1400,7 @@ bool should_numa_migrate_memory(struct task_struct *p, struct page * page,
          * two full passes of the "multi-stage node selection" test that is
          * executed below.
          */
-        if ((p->numa_preferred_nid == -1 || p->numa_scan_seq <= 4) &&
+        if ((p->numa_preferred_nid == NUMA_NO_NODE || p->numa_scan_seq <= 4) &&
             (cpupid_pid_unset(last_cpupid) || cpupid_match_pid(p, last_cpupid)))
                 return true;
 
@@ -1848,7 +1848,7 @@ static void numa_migrate_preferred(struct task_struct *p)
         unsigned long interval = HZ;
 
         /* This task has no NUMA fault statistics yet */
-        if (unlikely(p->numa_preferred_nid == -1 || !p->numa_faults))
+        if (unlikely(p->numa_preferred_nid == NUMA_NO_NODE || !p->numa_faults))
                 return;
 
         /* Periodically retry migrating the task to the preferred node */
@@ -2095,7 +2095,7 @@ static int preferred_group_nid(struct task_struct *p, int nid)
 
 static void task_numa_placement(struct task_struct *p)
 {
-        int seq, nid, max_nid = -1;
+        int seq, nid, max_nid = NUMA_NO_NODE;
         unsigned long max_faults = 0;
         unsigned long fault_types[2] = { 0, 0 };
         unsigned long total_faults;
@@ -2638,7 +2638,8 @@ static void update_scan_period(struct task_struct *p, int new_cpu)
                  * the preferred node.
                  */
                 if (dst_nid == p->numa_preferred_nid ||
-                    (p->numa_preferred_nid != -1 && src_nid != p->numa_preferred_nid))
+                    (p->numa_preferred_nid != NUMA_NO_NODE &&
+                        src_nid != p->numa_preferred_nid))
                         return;
         }