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sched/numa: Track NUMA hinting faults on per-node basis

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This patch tracks what nodes numa hinting faults were incurred on.
This information is later used to schedule a task on the node storing
the pages most frequently faulted by the task.

Signed-off-by: Mel Gorman <mgorman@suse.de>
Reviewed-by: Rik van Riel <riel@redhat.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1381141781-10992-20-git-send-email-mgorman@suse.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Mel Gorman
2013-10-07 11:28:57 +01:00
committed by Ingo Molnar
parent f307cd1a32
commit f809ca9a55
4 changed files with 27 additions and 1 deletions
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12
kernel/sched/sched.h
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@ -6,6 +6,7 @@
#include <linux/spinlock.h>
#include <linux/stop_machine.h>
#include <linux/tick.h>
#include <linux/slab.h>
#include "cpupri.h"
#include "cpuacct.h"
@ -555,6 +556,17 @@ static inline u64 rq_clock_task(struct rq *rq)
return rq->clock_task;
}
#ifdef CONFIG_NUMA_BALANCING
static inline void task_numa_free(struct task_struct *p)
{
kfree(p->numa_faults);
}
#else /* CONFIG_NUMA_BALANCING */
static inline void task_numa_free(struct task_struct *p)
{
}
#endif /* CONFIG_NUMA_BALANCING */
#ifdef CONFIG_SMP
#define rcu_dereference_check_sched_domain(p) \