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| author | Srikar Dronamraju <srikar@linux.vnet.ibm.com> | 2015-08-11 16:30:12 +0530 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2015-09-13 09:52:53 +0200 |
| commit | c3b9bc5bbfc3750570d788afffd431263ef695c6 (patch) | |
| tree | c0c42873cf12ccd803249e0ca4921b93c6d8a5b1 /kernel/sched/features.h | |
| parent | 78a9c54649ea220065aad9902460a1d137c7eafd (diff) | |
| download | op-kernel-dev-c3b9bc5bbfc3750570d788afffd431263ef695c6.zip op-kernel-dev-c3b9bc5bbfc3750570d788afffd431263ef695c6.tar.gz | |
sched/numa: Disable sched_numa_balancing on UMA systems
Commit 2a1ed24 ("sched/numa: Prefer NUMA hotness over cache hotness")
sets sched feature NUMA to true. However this can enable NUMA hinting
faults on a UMA system.
This commit ensures that NUMA hinting faults occur only on a NUMA system
by setting/resetting sched_numa_balancing.
This commit:
- 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).
Signed-off-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rik van Riel <riel@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1439290813-6683-3-git-send-email-srikar@linux.vnet.ibm.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel/sched/features.h')
0 files changed, 0 insertions, 0 deletions
