[android-common:android16-6.12-kminext 5/5] arch/arm64/kvm/hyp_events.c:235:19: warning: no previous prototype for '__hyp_trace_find_event_name'

Hi Vincent,

FYI, the error/warning still remains.

tree:   https://android.googlesource.com/kernel/common android16-6.12-kminext
head:   d32bfdf6c3d809458c048ad6694ba52e9b6c7440
commit: 12aaf60a831904372fbd91490acdeb2c4ab3cf78 [5/5] ANDROID: KVM: arm64: Allow registration of pKVM module hyp events
config: arm64-randconfig-004-20260731 (https://download.01.org/0day-ci/archive/20260801/[email protected]/config)
compiler: aarch64-linux-gcc (GCC) 12.5.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260801/[email protected]/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <[email protected]>
| Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]/

All warnings (new ones prefixed by >>):

>> arch/arm64/kvm/hyp_events.c:235:19: warning: no previous prototype for '__hyp_trace_find_event_name' [-Wmissing-prototypes]
     235 | struct hyp_event *__hyp_trace_find_event_name(const char *name,
         |                   ^~~~~~~~~~~~~~~~~~~~~~~~~~~
>> arch/arm64/kvm/hyp_events.c:247:19: warning: no previous prototype for 'hyp_trace_find_event_name' [-Wmissing-prototypes]
     247 | struct hyp_event *hyp_trace_find_event_name(const char *name)
         |                   ^~~~~~~~~~~~~~~~~~~~~~~~~


vim +/__hyp_trace_find_event_name +235 arch/arm64/kvm/hyp_events.c

   231	
   232	#define nr_events(__start, __stop) \
   233		(((unsigned long)__stop - (unsigned long)__start) / sizeof(*__start))
   234	
 > 235	struct hyp_event *__hyp_trace_find_event_name(const char *name,
   236						      struct hyp_event *start,
   237						      struct hyp_event *end)
   238	{
   239		for (; start < end; start++) {
   240			if (!strncmp(name, start->name, HYP_EVENT_NAME_MAX))
   241				return start;
   242		}
   243	
   244		return NULL;
   245	}
   246	
 > 247	struct hyp_event *hyp_trace_find_event_name(const char *name)
   248	{
   249		struct hyp_event_table *table;
   250		struct hyp_event *event =
   251			__hyp_trace_find_event_name(name, __hyp_events_start,
   252						    __hyp_events_end);
   253	
   254		if (event)
   255			return event;
   256	
   257		rcu_read_lock();
   258		table = rcu_dereference(mod_event_tables.tables);
   259	
   260		for (int i = 0; i < mod_event_tables.nr_tables; i++) {
   261			struct hyp_event *end = table->start + table->nr_events;
   262	
   263			event = __hyp_trace_find_event_name(name, table->start, end);
   264			if (event)
   265				break;
   266		}
   267	
   268		rcu_read_unlock();
   269	
   270		return event;
   271	}
   272	

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