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authorLinus Torvalds <torvalds@linux-foundation.org>2019-03-06 10:31:36 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2019-03-06 10:31:36 -0800
commit8dcd175bc3d50b78413c56d5b17d4bddd77412ef (patch)
tree2c2fb25759b43f2e73830f07ef3b444d76825280 /kernel/sched
parentafe6fe7036c6efdcb46cabc64bec9b6e4a005210 (diff)
parentfff04900ea79915939ef6a3aad78fca6511a3034 (diff)
Merge branch 'akpm' (patches from Andrew)
Merge misc updates from Andrew Morton: - a few misc things - ocfs2 updates - most of MM * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (159 commits) tools/testing/selftests/proc/proc-self-syscall.c: remove duplicate include proc: more robust bulk read test proc: test /proc/*/maps, smaps, smaps_rollup, statm proc: use seq_puts() everywhere proc: read kernel cpu stat pointer once proc: remove unused argument in proc_pid_lookup() fs/proc/thread_self.c: code cleanup for proc_setup_thread_self() fs/proc/self.c: code cleanup for proc_setup_self() proc: return exit code 4 for skipped tests mm,mremap: bail out earlier in mremap_to under map pressure mm/sparse: fix a bad comparison mm/memory.c: do_fault: avoid usage of stale vm_area_struct writeback: fix inode cgroup switching comment mm/huge_memory.c: fix "orig_pud" set but not used mm/hotplug: fix an imbalance with DEBUG_PAGEALLOC mm/memcontrol.c: fix bad line in comment mm/cma.c: cma_declare_contiguous: correct err handling mm/page_ext.c: fix an imbalance with kmemleak mm/compaction: pass pgdat to too_many_isolated() instead of zone mm: remove zone_lru_lock() function, access ->lru_lock directly ...
Diffstat (limited to 'kernel/sched')
-rw-r--r--kernel/sched/core.c3
-rw-r--r--kernel/sched/fair.c15
2 files changed, 11 insertions, 7 deletions
diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index f3901b84d217..ead464a0f2e5 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -2220,6 +2220,9 @@ static void __sched_fork(unsigned long clone_flags, struct task_struct *p)
INIT_HLIST_HEAD(&p->preempt_notifiers);
#endif
+#ifdef CONFIG_COMPACTION
+ p->capture_control = NULL;
+#endif
init_numa_balancing(clone_flags, p);
}
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index 8213ff6e365d..ea74d43924b2 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -1173,7 +1173,7 @@ 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;
}
@@ -1193,13 +1193,13 @@ 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));
}
@@ -1413,7 +1413,7 @@ 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;
@@ -1861,7 +1861,7 @@ 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 */
@@ -2108,7 +2108,7 @@ 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;
@@ -2651,7 +2651,8 @@ 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;
}