Unverified Commit df8020ef authored by openeuler-ci-bot's avatar openeuler-ci-bot Committed by Gitee
Browse files

!11971 sched: Support to enable/disable dynamic_affinity 

Merge Pull Request from: @ci-robot 
 
PR sync from: Hui Tang <tanghui20@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/AVTZPSYM2TJKJYSFXO5MIBN55WPS42G7/ 
 
https://gitee.com/openeuler/kernel/issues/IAUFO7 
 
Link:https://gitee.com/openeuler/kernel/pulls/11971

 

Reviewed-by: default avatarZucheng Zheng <zhengzucheng@huawei.com>
Reviewed-by: default avatarZhang Peng <zhangpeng362@huawei.com>
Signed-off-by: default avatarZhang Peng <zhangpeng362@huawei.com>
parents 288478ea 18421249

kernel/sched/fair.c

+19 −4
Original line number Diff line number Diff line
@@ -8962,12 +8962,27 @@ static int find_energy_efficient_cpu(struct task_struct *p, int prev_cpu) 


DEFINE_STATIC_KEY_FALSE(__dynamic_affinity_switch);



static int __init dynamic_affinity_switch_setup(char *__unused)

static int __init dynamic_affinity_switch_setup(char *str)

{

	int ret = 1;



	if (!str)

		goto out;



	if (!strcmp(str, "enable"))

		static_branch_enable(&__dynamic_affinity_switch);

	return 1;

	else if (!strcmp(str, "disable"))

		static_branch_disable(&__dynamic_affinity_switch);

	else

		ret = 0;



out:

	if (!ret)

		pr_warn("Unable to parse dynamic_affinity=\n");



	return ret;

}

__setup("dynamic_affinity", dynamic_affinity_switch_setup);

__setup("dynamic_affinity=", dynamic_affinity_switch_setup);



static inline bool prefer_cpus_valid(struct task_struct *p)

{