ANDROID: sched: add hook point in do_sched_yield()

When a task yields, it relinquishes the cpu and
scheduler is tasked to find another task.
However our vendor scheduler logic implementation
could return the same task leading to a loop where
the yielded task gets to run back, so add hook point
in do_sched_yield() for vendor can do some work
before task is scheduled.

Bug: 205804537
Change-Id: I6528c3f4b0ee360559ef9c97cb1eb2b2d1357870
Signed-off-by: Tengfei Fan <quic_tengfan@quicinc.com>

include/trace/hooks/sched.h

@@ -291,6 +291,10 @@ DECLARE_RESTRICTED_HOOK(android_rvh_replace_next_task_fair,
 			bool simple, struct task_struct *prev),
 	TP_ARGS(rq, p, se, repick, simple, prev), 1);
 
+DECLARE_RESTRICTED_HOOK(android_rvh_do_sched_yield,
+	TP_PROTO(struct rq *rq),
+	TP_ARGS(rq), 1);
+
 DECLARE_RESTRICTED_HOOK(android_rvh_util_est_update,
 	TP_PROTO(struct cfs_rq *cfs_rq, struct task_struct *p, bool task_sleep, int *ret),
 	TP_ARGS(cfs_rq, p, task_sleep, ret), 1);