[android-common:android15-6.6 2/2] arch/arm64/kvm/hyp_events.c:134:6: warning: no previous prototype for 'hyp_trace_init_event_early'

Hi Vincent,

FYI, the error/warning still remains.

tree:   https://android.googlesource.com/kernel/common android15-6.6
head:   24c059d9e217f32d61570fdbd7eb66bc999657a9
commit: 898e4d2aa33bd70705040b7c2f485c968cc3d594 [2/2] ANDROID: KVM: arm64: add support for early enablement nVHE hyp events
config: arm64-randconfig-004-20260816 (https://download.01.org/0day-ci/archive/20260817/[email protected]/config)
compiler: aarch64-linux-gcc (GCC) 10.5.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260817/[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 >>):

   In file included from arch/arm64/kvm/hyp_events.c:9:
   arch/arm64/include/asm/kvm_define_hypevents.h:17:7: warning: no previous prototype for 'hyp_event_trace_hyp_enter' [-Wmissing-prototypes]
      17 |  void hyp_event_trace_##__name(struct ht_iterator *iter)   \
         |       ^~~~~~~~~~~~~~~~
   arch/arm64/include/asm/kvm_hypevents.h:14:1: note: in expansion of macro 'HYP_EVENT'
      14 | HYP_EVENT(hyp_enter,
         | ^~~~~~~~~
   arch/arm64/include/asm/kvm_define_hypevents.h:17:7: warning: no previous prototype for 'hyp_event_trace_hyp_exit' [-Wmissing-prototypes]
      17 |  void hyp_event_trace_##__name(struct ht_iterator *iter)   \
         |       ^~~~~~~~~~~~~~~~
   arch/arm64/include/asm/kvm_hypevents.h:23:1: note: in expansion of macro 'HYP_EVENT'
      23 | HYP_EVENT(hyp_exit,
         | ^~~~~~~~~
>> arch/arm64/kvm/hyp_events.c:134:6: warning: no previous prototype for 'hyp_trace_init_event_early' [-Wmissing-prototypes]
     134 | bool hyp_trace_init_event_early(void)
         |      ^~~~~~~~~~~~~~~~~~~~~~~~~~
   arch/arm64/kvm/hyp_events.c:169:6: warning: no previous prototype for 'hyp_trace_init_event_tracefs' [-Wmissing-prototypes]
     169 | void hyp_trace_init_event_tracefs(struct dentry *parent)
         |      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
   arch/arm64/kvm/hyp_events.c:199:19: warning: no previous prototype for 'hyp_trace_find_event' [-Wmissing-prototypes]
     199 | struct hyp_event *hyp_trace_find_event(int id)
         |                   ^~~~~~~~~~~~~~~~~~~~
   arch/arm64/kvm/hyp_events.c:212:5: warning: no previous prototype for 'hyp_trace_init_events' [-Wmissing-prototypes]
     212 | int hyp_trace_init_events(void)
         |     ^~~~~~~~~~~~~~~~~~~~~


vim +/hyp_trace_init_event_early +134 arch/arm64/kvm/hyp_events.c

   133	
 > 134	bool hyp_trace_init_event_early(void)
   135	{
   136		char *token, *buf = early_events;
   137		bool enabled = false;
   138	
   139		while (true) {
   140			token = strsep(&buf, ",");
   141	
   142			if (!token)
   143				break;
   144	
   145			if (*token) {
   146				struct hyp_event *event;
   147				int ret;
   148	
   149				event = find_hyp_event(token);
   150				if (event) {
   151					ret = enable_hyp_event(event, true);
   152					if (ret)
   153						pr_warn("Couldn't enable hyp event %s:%d\n",
   154							token, ret);
   155					else
   156						enabled = true;
   157				} else {
   158					pr_warn("Couldn't find hyp event %s\n", token);
   159				}
   160			}
   161	
   162			if (buf)
   163				*(buf - 1) = ',';
   164		}
   165	
   166		return enabled;
   167	}
   168	

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https://github.com/intel/lkp-tests/wiki