diff --git a/kernel/sched/core.c b/kernel/sched/core.c index 7880f4f64d0e..7571fc49af89 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -7356,6 +7356,27 @@ static int cpu_uclamp_max_show(struct seq_file *sf, void *v) cpu_uclamp_print(sf, UCLAMP_MAX); return 0; } + +static int cpu_uclamp_ls_write_u64(struct cgroup_subsys_state *css, + struct cftype *cftype, u64 ls) +{ + struct task_group *tg; + + if (ls > 1) + return -EINVAL; + tg = css_tg(css); + tg->latency_sensitive = (unsigned int) ls; + + return 0; +} + +static u64 cpu_uclamp_ls_read_u64(struct cgroup_subsys_state *css, + struct cftype *cft) +{ + struct task_group *tg = css_tg(css); + + return (u64) tg->latency_sensitive; +} #endif /* CONFIG_UCLAMP_TASK_GROUP */ #ifdef CONFIG_FAIR_GROUP_SCHED @@ -7716,6 +7737,12 @@ static struct cftype cpu_legacy_files[] = { .seq_show = cpu_uclamp_max_show, .write = cpu_uclamp_max_write, }, + { + .name = "uclamp.latency_sensitive", + .flags = CFTYPE_NOT_ON_ROOT, + .read_u64 = cpu_uclamp_ls_read_u64, + .write_u64 = cpu_uclamp_ls_write_u64, + }, #endif { } /* Terminate */ }; @@ -7897,6 +7924,12 @@ static struct cftype cpu_files[] = { .seq_show = cpu_uclamp_max_show, .write = cpu_uclamp_max_write, }, + { + .name = "uclamp.latency_sensitive", + .flags = CFTYPE_NOT_ON_ROOT, + .read_u64 = cpu_uclamp_ls_read_u64, + .write_u64 = cpu_uclamp_ls_write_u64, + }, #endif { } /* terminate */ }; diff --git a/kernel/sched/sched.h b/kernel/sched/sched.h index 9015c687de19..7de9f16cb838 100644 --- a/kernel/sched/sched.h +++ b/kernel/sched/sched.h @@ -399,6 +399,8 @@ struct task_group { struct uclamp_se uclamp_req[UCLAMP_CNT]; /* Effective clamp values used for a task group */ struct uclamp_se uclamp[UCLAMP_CNT]; + /* Latency-sensitive flag used for a task group */ + unsigned int latency_sensitive; #endif };