sched/numa: Don't scale the imbalance
It's far too easy to get ridiculously large imbalance pct when you scale it like that. Use a fixed 125% for now. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/n/tip-zsriaft1dv7hhboyrpvqjy6s@git.kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
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@ -6261,11 +6261,6 @@ static int *sched_domains_numa_distance;
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static struct cpumask ***sched_domains_numa_masks;
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static int sched_domains_curr_level;
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static inline unsigned long numa_scale(unsigned long x, int level)
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{
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return x * sched_domains_numa_distance[level] / sched_domains_numa_scale;
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}
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static inline int sd_local_flags(int level)
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{
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if (sched_domains_numa_distance[level] > REMOTE_DISTANCE)
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@ -6286,7 +6281,7 @@ sd_numa_init(struct sched_domain_topology_level *tl, int cpu)
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.min_interval = sd_weight,
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.max_interval = 2*sd_weight,
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.busy_factor = 32,
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.imbalance_pct = 100 + numa_scale(25, level),
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.imbalance_pct = 125,
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.cache_nice_tries = 2,
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.busy_idx = 3,
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.idle_idx = 2,
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