ANDROID: vendor_hooks: shorten mutex_unlock_slowpath_before_wakeq

When we use this KMI(__tracepoint_android_vh_mutex_unlock_slowpath_before_wakeq)
in vendor modules, it reports modpost error: too long symbol. So, shorten it as
__tracepoint_android_vh_mutex_unlock_slowpath_bf_wakeq.

Fixes: 9f6bd037 ("ANDROID: vendor_hooks: add hook in __mutex_unlock_slowpath()")

Bug: 381511799

Change-Id: I1a74ea3433dd2d9e234f56ea81a7c1020f4a56bb
Signed-off-by: wei li <sirius.liwei@honor.corp-partner.google.com>

drivers/android/vendor_hooks.c

@@ -312,7 +312,7 @@ EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_gzvm_handle_demand_page_post);
 EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_gzvm_destroy_vm_post_process);
 EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_alter_mutex_list_add);
 EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_mutex_unlock_slowpath);
-EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_mutex_unlock_slowpath_before_wakeq);
+EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_mutex_unlock_slowpath_bf_wakeq);
 EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_save_track_hash);
 EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_should_fault_around);
 EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_mem_cgroup_charge);

include/trace/hooks/dtask.h

@@ -129,7 +129,7 @@ DECLARE_HOOK(android_vh_alter_mutex_list_add,
 DECLARE_HOOK(android_vh_mutex_unlock_slowpath,
 	TP_PROTO(struct mutex *lock),
 	TP_ARGS(lock));
-DECLARE_HOOK(android_vh_mutex_unlock_slowpath_before_wakeq,
+DECLARE_HOOK(android_vh_mutex_unlock_slowpath_bf_wakeq,
 	TP_PROTO(struct mutex *lock),
 	TP_ARGS(lock));
 

kernel/locking/mutex.c

@@ -974,7 +974,7 @@ static noinline void __sched __mutex_unlock_slowpath(struct mutex *lock, unsigne
 	if (owner & MUTEX_FLAG_HANDOFF)
 		__mutex_handoff(lock, next);
 
-	trace_android_vh_mutex_unlock_slowpath_before_wakeq(lock);
+	trace_android_vh_mutex_unlock_slowpath_bf_wakeq(lock);
 	raw_spin_unlock(&lock->wait_lock);
 
 	wake_up_q(&wake_q);