diff options
| -rw-r--r-- | include/trace/events/sched.h | 67 | ||||
| -rw-r--r-- | kernel/sched/fair.c | 7 |
2 files changed, 65 insertions, 9 deletions
diff --git a/include/trace/events/sched.h b/include/trace/events/sched.h index f1a062ca1239..9342a91f3e65 100644 --- a/include/trace/events/sched.h +++ b/include/trace/events/sched.h @@ -574,14 +574,15 @@ TRACE_EVENT(sched_wake_idle_without_ipi, #ifdef CONFIG_SMP #ifdef CREATE_TRACE_POINTS static inline -int __trace_sched_cpu(struct cfs_rq *cfs_rq) +int __trace_sched_cpu(struct cfs_rq *cfs_rq, struct sched_entity *se) { #ifdef CONFIG_FAIR_GROUP_SCHED - struct rq *rq = cfs_rq->rq; + struct rq *rq = cfs_rq ? cfs_rq->rq : NULL; #else - struct rq *rq = container_of(cfs_rq, struct rq, cfs); + struct rq *rq = cfs_rq ? container_of(cfs_rq, struct rq, cfs) : NULL; #endif - return cpu_of(rq); + return rq ? cpu_of(rq) + : task_cpu((container_of(se, struct task_struct, se))); } static inline @@ -590,18 +591,26 @@ int __trace_sched_path(struct cfs_rq *cfs_rq, char *path, int len) #ifdef CONFIG_FAIR_GROUP_SCHED int l = path ? len : 0; - if (task_group_is_autogroup(cfs_rq->tg)) + if (cfs_rq && task_group_is_autogroup(cfs_rq->tg)) return autogroup_path(cfs_rq->tg, path, l) + 1; - else + else if (cfs_rq && cfs_rq->tg->css.cgroup) return cgroup_path(cfs_rq->tg->css.cgroup, path, l) + 1; -#else +#endif if (path) strcpy(path, "(null)"); return strlen("(null)"); -#endif } +static inline +struct cfs_rq *__trace_sched_group_cfs_rq(struct sched_entity *se) +{ +#ifdef CONFIG_FAIR_GROUP_SCHED + return se->my_q; +#else + return NULL; +#endif +} #endif /* CREATE_TRACE_POINTS */ /* @@ -623,7 +632,7 @@ TRACE_EVENT(sched_load_cfs_rq, ), TP_fast_assign( - __entry->cpu = __trace_sched_cpu(cfs_rq); + __entry->cpu = __trace_sched_cpu(cfs_rq, NULL); __trace_sched_path(cfs_rq, __get_dynamic_array(path), __get_dynamic_array_len(path)); __entry->load = cfs_rq->avg.load_avg; @@ -635,6 +644,46 @@ TRACE_EVENT(sched_load_cfs_rq, __entry->cpu, __get_str(path), __entry->load, __entry->rbl_load,__entry->util) ); + +/* + * Tracepoint for sched_entity load tracking: + */ +TRACE_EVENT(sched_load_se, + + TP_PROTO(struct sched_entity *se), + + TP_ARGS(se), + + TP_STRUCT__entry( + __field( int, cpu ) + __dynamic_array(char, path, + __trace_sched_path(__trace_sched_group_cfs_rq(se), NULL, 0) ) + __array( char, comm, TASK_COMM_LEN ) + __field( pid_t, pid ) + __field( unsigned long, load ) + __field( unsigned long, rbl_load ) + __field( unsigned long, util ) + ), + + TP_fast_assign( + struct cfs_rq *gcfs_rq = __trace_sched_group_cfs_rq(se); + struct task_struct *p = gcfs_rq ? NULL + : container_of(se, struct task_struct, se); + + __entry->cpu = __trace_sched_cpu(gcfs_rq, se); + __trace_sched_path(gcfs_rq, __get_dynamic_array(path), + __get_dynamic_array_len(path)); + memcpy(__entry->comm, p ? p->comm : "(null)", TASK_COMM_LEN); + __entry->pid = p ? p->pid : -1; + __entry->load = se->avg.load_avg; + __entry->rbl_load = se->avg.runnable_load_avg; + __entry->util = se->avg.util_avg; + ), + + TP_printk("cpu=%d path=%s comm=%s pid=%d load=%lu rbl_load=%lu util=%lu", + __entry->cpu, __get_str(path), __entry->comm, __entry->pid, + __entry->load, __entry->rbl_load, __entry->util) +); #endif /* CONFIG_SMP */ #endif /* _TRACE_SCHED_H */ diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index 44e15e331048..e17aa1efeb0a 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -3284,6 +3284,9 @@ __update_load_avg_blocked_se(u64 now, int cpu, struct sched_entity *se) if (___update_load_sum(now, cpu, &se->avg, 0, 0, 0)) { ___update_load_avg(&se->avg, se_weight(se), se_runnable(se)); + + trace_sched_load_se(se); + return 1; } @@ -3300,6 +3303,9 @@ __update_load_avg_se(u64 now, int cpu, struct cfs_rq *cfs_rq, struct sched_entit cfs_rq->curr == se)) { ___update_load_avg(&se->avg, se_weight(se), se_runnable(se)); + + trace_sched_load_se(se); + return 1; } @@ -3552,6 +3558,7 @@ static inline int propagate_entity_load_avg(struct sched_entity *se) update_tg_cfs_runnable(cfs_rq, se, gcfs_rq); trace_sched_load_cfs_rq(cfs_rq); + trace_sched_load_se(se); return 1; } |