ANDROID: vendor_hooks: Add hooks to record the time of the process in various states

These hooks will do the following works:
a) record the time of the process in various states
b) Make corresponding optimization strategies in different hooks

Bug: 205938967

Signed-off-by: Liujie Xie <xieliujie@oppo.com>
Change-Id: Ia3c47bbf0aadd17337ce18fd910343b1b8c3ef93

drivers/android/vendor_hooks.c

@@ -312,6 +312,7 @@ EXPORT_TRACEPOINT_SYMBOL_GPL(android_rvh_dequeue_entity);
 EXPORT_TRACEPOINT_SYMBOL_GPL(android_rvh_entity_tick);
 EXPORT_TRACEPOINT_SYMBOL_GPL(android_rvh_enqueue_task_fair);
 EXPORT_TRACEPOINT_SYMBOL_GPL(android_rvh_dequeue_task_fair);
+EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_sched_stat_runtime_rt);
 EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_prepare_update_load_avg_se);
 EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_finish_update_load_avg_se);
 EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_selinux_is_initialized);

include/trace/hooks/sched.h

@@ -354,6 +354,10 @@ DECLARE_HOOK(android_vh_prepare_update_load_avg_se,
 	TP_PROTO(struct sched_entity *se, int flags),
 	TP_ARGS(se, flags));
 
+DECLARE_HOOK(android_vh_sched_stat_runtime_rt,
+	TP_PROTO(struct task_struct *tsk, u64 delta),
+	TP_ARGS(tsk, delta));
+
 DECLARE_HOOK(android_vh_finish_update_load_avg_se,
 	TP_PROTO(struct sched_entity *se, int flags),
 	TP_ARGS(se, flags));

kernel/sched/fair.c

@@ -24,6 +24,8 @@
 
 #include <trace/hooks/sched.h>
 
+EXPORT_TRACEPOINT_SYMBOL_GPL(sched_stat_runtime);
+
 /*
  * Targeted preemption latency for CPU-bound tasks:
  *

kernel/sched/rt.c

@@ -1026,6 +1026,8 @@ static void update_curr_rt(struct rq *rq)
 	curr->se.exec_start = now;
 	cgroup_account_cputime(curr, delta_exec);
 
+	trace_android_vh_sched_stat_runtime_rt(curr, delta_exec);
+
 	if (!rt_bandwidth_enabled())
 		return;