From: Guan Jing guanjing6@huawei.com
hulk inclusion category: feature bugzilla: https://gitee.com/openeuler/kernel/issues/I8O3MY CVE: NA
--------------------------------
We have added two statistics for qos smt expeller: a) nr_qos_smt_send_ipi:the times of ipi which online task expel offline tasks; b) nr_qos_smt_expelled:the statistics that offline task will not be picked times.
Signed-off-by: Guan Jing guanjing6@huawei.com Signed-off-by: Xia Fukun xiafukun@huawei.com --- include/linux/sched.h | 5 +++++ kernel/sched/debug.c | 5 +++++ kernel/sched/fair.c | 2 ++ 3 files changed, 12 insertions(+)
diff --git a/include/linux/sched.h b/include/linux/sched.h index 3ebd2398227a..9fdd08aa9626 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -548,6 +548,11 @@ struct sched_statistics { u64 nr_wakeups_preferred_cpus; u64 nr_wakeups_force_preferred_cpus; #endif + +#ifdef CONFIG_QOS_SCHED_SMT_EXPELLER + u64 nr_qos_smt_send_ipi; + u64 nr_qos_smt_expelled; +#endif #endif /* CONFIG_SCHEDSTATS */ } ____cacheline_aligned;
diff --git a/kernel/sched/debug.c b/kernel/sched/debug.c index eee2d05dc90a..ebec719e204c 100644 --- a/kernel/sched/debug.c +++ b/kernel/sched/debug.c @@ -1046,6 +1046,11 @@ void proc_sched_show_task(struct task_struct *p, struct pid_namespace *ns, } #endif
+#ifdef CONFIG_QOS_SCHED_SMT_EXPELLER + P_SCHEDSTAT(nr_qos_smt_send_ipi); + P_SCHEDSTAT(nr_qos_smt_expelled); +#endif + avg_atom = p->se.sum_exec_runtime; if (nr_switches) avg_atom = div64_ul(avg_atom, nr_switches); diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index 7bf8536d3c8d..3a62b6f25846 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -8812,6 +8812,7 @@ static void qos_smt_send_ipi(int this_cpu) rq->cfs.h_nr_running == 0) continue;
+ schedstat_inc(current->stats.nr_qos_smt_send_ipi); smp_send_reschedule(cpu); } } @@ -8915,6 +8916,7 @@ pick_next_task_fair(struct rq *rq, struct task_struct *prev, struct rq_flags *rf #ifdef CONFIG_QOS_SCHED_SMT_EXPELLER if (qos_smt_expelled(this_cpu)) { __this_cpu_write(qos_smt_status, QOS_LEVEL_OFFLINE); + schedstat_inc(rq->curr->stats.nr_qos_smt_expelled); return NULL; } #endif