diff options
| author | Peter Zijlstra <a.p.zijlstra@chello.nl> | 2012-10-25 14:16:43 +0200 |
|---|---|---|
| committer | Mel Gorman <mgorman@suse.de> | 2012-12-11 14:42:45 +0000 |
| commit | cbee9f88ec1b8dd6b58f25f54e4f52c82ed77690 (patch) | |
| tree | d4cfbcfa3e89742216cd792d4aa914356406b532 /kernel/sched/sched.h | |
| parent | a720094ded8cbb303111035be91858011d2eac71 (diff) | |
mm: numa: Add fault driven placement and migration
NOTE: This patch is based on "sched, numa, mm: Add fault driven
placement and migration policy" but as it throws away all the policy
to just leave a basic foundation I had to drop the signed-offs-by.
This patch creates a bare-bones method for setting PTEs pte_numa in the
context of the scheduler that when faulted later will be faulted onto the
node the CPU is running on. In itself this does nothing useful but any
placement policy will fundamentally depend on receiving hints on placement
from fault context and doing something intelligent about it.
Signed-off-by: Mel Gorman <mgorman@suse.de>
Acked-by: Rik van Riel <riel@redhat.com>
Diffstat (limited to 'kernel/sched/sched.h')
| -rw-r--r-- | kernel/sched/sched.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/kernel/sched/sched.h b/kernel/sched/sched.h index 7a7db09cfabc..ae31c051ff2f 100644 --- a/kernel/sched/sched.h +++ b/kernel/sched/sched.h @@ -648,6 +648,12 @@ extern struct static_key sched_feat_keys[__SCHED_FEAT_NR]; #define sched_feat(x) (sysctl_sched_features & (1UL << __SCHED_FEAT_##x)) #endif /* SCHED_DEBUG && HAVE_JUMP_LABEL */ +#ifdef CONFIG_NUMA_BALANCING +#define sched_feat_numa(x) sched_feat(x) +#else +#define sched_feat_numa(x) (0) +#endif + static inline u64 global_rt_period(void) { return (u64)sysctl_sched_rt_period * NSEC_PER_USEC; |