Re: [PATCH v2 0/3] Disable sched_numa_balancing on uma systems

From: Peter Zijlstra
Date: Wed Sep 02 2015 - 05:34:11 EST


On Tue, Aug 11, 2015 at 04:30:10PM +0530, Srikar Dronamraju wrote:
> With recent commit 2a1ed24 ("sched/numa: Prefer NUMA hotness over cache
> hotness") sets sched feature NUMA to true. This can enable numa hinting
> faults on a uma system.
>
> This patchset ensures that numa hinting faults occur only on a numa system
> by setting/resetting sched_numa_balancing.
>
> This patchset
> - Renames numabalancing_enabled to sched_numa_balancing
> - Makes sched_numa_balancing common to CONFIG_SCHED_DEBUG and
> !CONFIG_SCHED_DEBUG. Earlier it was only in !CONFIG_SCHED_DEBUG
> - Checks for sched_numa_balancing instead of sched_feat(NUMA)
> - Removes NUMA sched feature
>
> Srikar Dronamraju (3):
> sched/numa: Rename numabalancing_enabled to sched_numa_balancing
> sched/numa: Disable sched_numa_balancing on uma systems
> sched/numa: Remove NUMA sched feature
>
> kernel/sched/core.c | 16 +++-------------
> kernel/sched/fair.c | 8 ++++----
> kernel/sched/features.h | 16 ----------------
> kernel/sched/sched.h | 10 ++--------
> 4 files changed, 9 insertions(+), 41 deletions(-)

Thanks!
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