sched/numa: Disable sched_numa_balancing on UMA systems
Commit 2a1ed24c ("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: NSrikar Dronamraju <srikar@linux.vnet.ibm.com> Signed-off-by: NPeter 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.comSigned-off-by: NIngo Molnar <mingo@kernel.org>
Showing
想要评论请 注册 或 登录