Commit 8b36d07f authored by Ricardo Neri's avatar Ricardo Neri Committed by Peter Zijlstra
Browse files

sched/fair: Move is_core_idle() out of CONFIG_NUMA 



asym_packing needs this function to determine whether an SMT core is a
suitable destination for load balancing.

Signed-off-by: default avatarRicardo Neri <ricardo.neri-calderon@linux.intel.com>
Signed-off-by: default avatarPeter Zijlstra (Intel) <peterz@infradead.org>
Tested-by: default avatarZhang Rui <rui.zhang@intel.com>
Link: https://lore.kernel.org/r/20230406203148.19182-2-ricardo.neri-calderon@linux.intel.com
parent ac9a7868

kernel/sched/fair.c

+17 −17
Original line number Diff line number Diff line
@@ -1064,6 +1064,23 @@ update_stats_curr_start(struct cfs_rq *cfs_rq, struct sched_entity *se) 
 * Scheduling class queueing methods:

 */



static inline bool is_core_idle(int cpu)

{

#ifdef CONFIG_SCHED_SMT

	int sibling;



	for_each_cpu(sibling, cpu_smt_mask(cpu)) {

		if (cpu == sibling)

			continue;



		if (!idle_cpu(sibling))

			return false;

	}

#endif



	return true;

}



#ifdef CONFIG_NUMA

#define NUMA_IMBALANCE_MIN 2
@@ -1700,23 +1717,6 @@ struct numa_stats { 
	int idle_cpu;

};



static inline bool is_core_idle(int cpu)

{

#ifdef CONFIG_SCHED_SMT

	int sibling;



	for_each_cpu(sibling, cpu_smt_mask(cpu)) {

		if (cpu == sibling)

			continue;



		if (!idle_cpu(sibling))

			return false;

	}

#endif



	return true;

}



struct task_numa_env {

	struct task_struct *p;