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| author | Mel Gorman <mgorman@suse.de> | 2013-10-07 11:28:57 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2013-10-09 12:40:22 +0200 |
| commit | f809ca9a554dda49fb264c79e31c722e0b063ff8 (patch) | |
| tree | dbb0307d8d16c26421c1a08fc11e4bbff1d48f85 /kernel/sched/sched.h | |
| parent | f307cd1a32fab53012b01749a1f5ba10b0a7243f (diff) | |
| download | op-kernel-dev-f809ca9a554dda49fb264c79e31c722e0b063ff8.zip op-kernel-dev-f809ca9a554dda49fb264c79e31c722e0b063ff8.tar.gz | |
sched/numa: Track NUMA hinting faults on per-node basis
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>
Diffstat (limited to 'kernel/sched/sched.h')
| -rw-r--r-- | kernel/sched/sched.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/kernel/sched/sched.h b/kernel/sched/sched.h index e82484d..199099c 100644 --- a/kernel/sched/sched.h +++ b/kernel/sched/sched.h @@ -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) \ |
