Unverified Commit 99680a79 authored by openeuler-ci-bot's avatar openeuler-ci-bot Committed by Gitee
Browse files

!7395 smart_grid: introducing rebuild_affinity_domain 

Merge Pull Request from: @ci-robot 
 
PR sync from: Yipeng Zou <zouyipeng@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/32JJWX7VVC5SYNELMJ7DDTGCXSRK5G3Q/ 
 
https://gitee.com/openeuler/kernel/issues/I9OJK9 
 
Link:https://gitee.com/openeuler/kernel/pulls/7395

 

Reviewed-by: default avatarZhang Jianhua <chris.zjh@huawei.com>
Signed-off-by: default avatarJialin Zhang <zhangjialin11@huawei.com>
parents 977ad51f 5803ffa8

kernel/sched/core.c

+13 −0
Original line number Diff line number Diff line
@@ -9704,6 +9704,15 @@ static int cpu_affinity_stat_show(struct seq_file *sf, void *v) 


	return 0;

}



static int cpu_rebuild_affinity_domain_u64(struct cgroup_subsys_state *css,

					   struct cftype *cftype,

					   u64 cpu)

{

	struct task_group *tg = css_tg(css);



	return tg_rebuild_affinity_domains(cpu, tg->auto_affinity);

}

#endif /* CONFIG_QOS_SCHED_SMART_GRID */



#ifdef CONFIG_QOS_SCHED
@@ -9887,6 +9896,10 @@ static struct cftype cpu_legacy_files[] = { 
		.name = "affinity_stat",

		.seq_show = cpu_affinity_stat_show,

	},

	{

		.name = "rebuild_affinity_domain",

		.write_u64 = cpu_rebuild_affinity_domain_u64,

	},

#endif

#ifdef CONFIG_CFS_BANDWIDTH

	{

kernel/sched/fair.c

+43 −0
Original line number Diff line number Diff line
@@ -6385,6 +6385,49 @@ static void destroy_auto_affinity(struct task_group *tg) 
	kfree(tg->auto_affinity);

	tg->auto_affinity = NULL;

}



int tg_rebuild_affinity_domains(int cpu, struct auto_affinity *auto_affi)

{

	int ret = 0;

	int level = 0;

	struct sched_domain *tmp;



	if (unlikely(!auto_affi))

		return -EPERM;



	mutex_lock(&smart_grid_used_mutex);

	raw_spin_lock_irq(&auto_affi->lock);

	/* Only build domain while auto mode disabled */

	if (auto_affi->mode) {

		ret = -EPERM;

		goto unlock_all;

	}



	/* Only build on active and housekeeping cpu */

	if (!cpu_active(cpu) || !housekeeping_cpu(cpu, HK_FLAG_DOMAIN)) {

		ret = -EINVAL;

		goto unlock_all;

	}



	for_each_domain(cpu, tmp) {

		if (!auto_affi->ad.domains[level] || !auto_affi->ad.domains_orig[level])

			continue;



		/* rebuild domain[,_orig] and reset schedstat counter */

		cpumask_copy(auto_affi->ad.domains[level], sched_domain_span(tmp));

		cpumask_copy(auto_affi->ad.domains_orig[level], auto_affi->ad.domains[level]);

		__schedstat_set(auto_affi->ad.stay_cnt[level], 0);

		level++;

	}



	/* trigger to update smart grid zone */

	sched_grid_zone_update(false);



unlock_all:

	raw_spin_unlock_irq(&auto_affi->lock);

	mutex_unlock(&smart_grid_used_mutex);

	return ret;

}

#else

static void __maybe_unused destroy_auto_affinity(struct task_group *tg) {}

kernel/sched/sched.h

+1 −0
Original line number Diff line number Diff line
@@ -582,6 +582,7 @@ extern void start_auto_affinity(struct auto_affinity *auto_affi); 
extern void stop_auto_affinity(struct auto_affinity *auto_affi);

extern int init_auto_affinity(struct task_group *tg);

extern void tg_update_affinity_domains(int cpu, int online);

extern int tg_rebuild_affinity_domains(int cpu, struct auto_affinity *auto_affi);



#else

static inline int init_auto_affinity(struct task_group *tg)