hulk inclusion category: feature bugzilla: https://gitee.com/openeuler/kernel/issues/I52611 CVE: NA
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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.
Adapted to 6.4 kernel.
Signed-off-by: Guan Jing guanjing6@huawei.com Reviewed-by: Chen Hui judy.chenhui@huawei.com Signed-off-by: Zheng Zengkai zhengzengkai@huawei.com Signed-off-by: Xia Fukun xiafukun@huawei.com --- include/linux/sched.h | 6 ++++++ kernel/sched/debug.c | 6 ++++++ kernel/sched/fair.c | 2 ++ 3 files changed, 14 insertions(+)
diff --git a/include/linux/sched.h b/include/linux/sched.h index ddf9d10bdc37..07e282cfa3e3 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -549,6 +549,12 @@ struct sched_statistics { u64 nr_wakeups_preferred_cpus; u64 nr_wakeups_force_preferred_cpus; #endif + +#if defined(CONFIG_QOS_SCHED_SMT_EXPELLER) && !defined(__GENKSYMS__) + 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 940e191d7722..37e71fdd879d 100644 --- a/kernel/sched/debug.c +++ b/kernel/sched/debug.c @@ -1049,6 +1049,12 @@ 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 9d1b546daa8f..a48ca8b09611 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -8480,6 +8480,7 @@ 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); } } @@ -8583,6 +8584,7 @@ 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