On 04/11/2014 01:34 PM, Joe Perches wrote:
> On Fri, 2014-04-11 at 13:00 -0400, [email protected] wrote:
>> This should reduce the overhead of the automatic NUMA placement
>> code, when a workload spans multiple NUMA nodes.
>
> trivial style note:
>
>> diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
> []
>> @@ -1737,6 +1737,7 @@ void task_numa_fault(int last_cpupid, int mem_node,
>> int pages, int flags)
>> struct task_struct *p = current;
>> bool migrated = flags & TNF_MIGRATED;
>> int cpu_node = task_node(current);
>> + int local = !!(flags & TNF_FAULT_LOCAL);
>
> Perhaps local would look nicer as bool
> and be better placed next to migrated.
The problem is, at the end of the function, local is used as an
array index...
p->numa_faults_locality[local] += pages;
}
I'm not sure I really want to use a bool as an array index :)
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