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| author |   Al Viro <viro@zeniv.linux.org.uk> | 2015-04-11 22:27:19 -0400 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2015-04-11 22:27:19 -0400 |
| commit | 39c853ebfe169f187a760b34f9cbf54751bfce00 (patch) | |
| tree | 2a5a741d0cff7d4f90998b31b32ff80cfccd0369 /kernel/sched/fair.c | |
| parent | sg_start_req(): use import_iovec() (diff) | |
| parent | new helper: msg_data_left() (diff) | |
| download | linux-dev-39c853ebfe169f187a760b34f9cbf54751bfce00.tar.xz linux-dev-39c853ebfe169f187a760b34f9cbf54751bfce00.zip | |
Merge branch 'for-davem' into for-next
Diffstat (limited to 'kernel/sched/fair.c')
| -rw-r--r-- | kernel/sched/fair.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index 7ce18f3c097a..bcfe32088b37 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -1609,9 +1609,11 @@ static void update_task_scan_period(struct task_struct *p, /* * If there were no record hinting faults then either the task is * completely idle or all activity is areas that are not of interest - * to automatic numa balancing. Scan slower + * to automatic numa balancing. Related to that, if there were failed + * migration then it implies we are migrating too quickly or the local + * node is overloaded. In either case, scan slower */ - if (local + shared == 0) { + if (local + shared == 0 || p->numa_faults_locality[2]) { p->numa_scan_period = min(p->numa_scan_period_max, p->numa_scan_period << 1); @@ -2080,6 +2082,8 @@ void task_numa_fault(int last_cpupid, int mem_node, int pages, int flags) if (migrated) p->numa_pages_migrated += pages; + if (flags & TNF_MIGRATE_FAIL) + p->numa_faults_locality[2] += pages; p->numa_faults[task_faults_idx(NUMA_MEMBUF, mem_node, priv)] += pages; p->numa_faults[task_faults_idx(NUMA_CPUBUF, cpu_node, priv)] += pages; |