Messages in this thread Patch in this message | | | From | Yuyang Du <> | Subject | [RFC PATCH 09/16 v3] Define and allocate a per CPU local cpumask for Workload Consolidation | Date | Fri, 30 May 2014 14:36:05 +0800 |
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We need these cpumasks to aid in cosolidated load balancing
Signed-off-by: Yuyang Du <yuyang.du@intel.com> --- kernel/sched/fair.c | 8 ++++++++ 1 file changed, 8 insertions(+)
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index 96d6f64..5755746 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -6638,6 +6638,8 @@ out: return ld_moved; } +static DEFINE_PER_CPU(cpumask_var_t, local_cpu_mask); + /* * idle_balance is called by schedule() if this_cpu is about to become * idle. Attempts to pull tasks from other CPUs. @@ -7692,6 +7694,12 @@ void print_cfs_stats(struct seq_file *m, int cpu) __init void init_sched_fair_class(void) { #ifdef CONFIG_SMP + unsigned int i; + for_each_possible_cpu(i) { + zalloc_cpumask_var_node(&per_cpu(local_cpu_mask, i), + GFP_KERNEL, cpu_to_node(i)); + } + open_softirq(SCHED_SOFTIRQ, run_rebalance_domains); #ifdef CONFIG_NO_HZ_COMMON -- 1.7.9.5
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