diff options
Diffstat (limited to 'kernel/sched/syscalls.c')
| -rw-r--r-- | kernel/sched/syscalls.c | 29 |
1 files changed, 23 insertions, 6 deletions
diff --git a/kernel/sched/syscalls.c b/kernel/sched/syscalls.c index 60e70c889d91..4fae3cf25a3a 100644 --- a/kernel/sched/syscalls.c +++ b/kernel/sched/syscalls.c @@ -401,10 +401,20 @@ static void __setscheduler_params(struct task_struct *p, p->policy = policy; - if (dl_policy(policy)) + if (dl_policy(policy)) { __setparam_dl(p, attr); - else if (fair_policy(policy)) + } else if (fair_policy(policy)) { p->static_prio = NICE_TO_PRIO(attr->sched_nice); + if (attr->sched_runtime) { + p->se.custom_slice = 1; + p->se.slice = clamp_t(u64, attr->sched_runtime, + NSEC_PER_MSEC/10, /* HZ=1000 * 10 */ + NSEC_PER_MSEC*100); /* HZ=100 / 10 */ + } else { + p->se.custom_slice = 0; + p->se.slice = sysctl_sched_base_slice; + } + } /* * __sched_setscheduler() ensures attr->sched_priority == 0 when @@ -700,7 +710,9 @@ recheck: * but store a possible modification of reset_on_fork. */ if (unlikely(policy == p->policy)) { - if (fair_policy(policy) && attr->sched_nice != task_nice(p)) + if (fair_policy(policy) && + (attr->sched_nice != task_nice(p) || + (attr->sched_runtime != p->se.slice))) goto change; if (rt_policy(policy) && attr->sched_priority != p->rt_priority) goto change; @@ -846,6 +858,9 @@ static int _sched_setscheduler(struct task_struct *p, int policy, .sched_nice = PRIO_TO_NICE(p->static_prio), }; + if (p->se.custom_slice) + attr.sched_runtime = p->se.slice; + /* Fixup the legacy SCHED_RESET_ON_FORK hack. */ if ((policy != SETPARAM_POLICY) && (policy & SCHED_RESET_ON_FORK)) { attr.sched_flags |= SCHED_FLAG_RESET_ON_FORK; @@ -1012,12 +1027,14 @@ err_size: static void get_params(struct task_struct *p, struct sched_attr *attr) { - if (task_has_dl_policy(p)) + if (task_has_dl_policy(p)) { __getparam_dl(p, attr); - else if (task_has_rt_policy(p)) + } else if (task_has_rt_policy(p)) { attr->sched_priority = p->rt_priority; - else + } else { attr->sched_nice = task_nice(p); + attr->sched_runtime = p->se.slice; + } } /** |