[android-common:android14-6.1 6546/6550] arch/arm64/kvm/hyp_events.c:204:6: warning: no previous prototype for 'kvm_hyp_events_enable_early'

[android-common:android14-6.1 6546/6550] arch/arm64/kvm/hyp_events.c:204:6: warning: no previous prototype for 'kvm_hyp_events_enable_early'

[kernel test robot]

tree:   https://android.googlesource.com/kernel/common android14-6.1
head:   b5a5282ca964178e46d1adb96ea1c3341303e94b
commit: 605d8f6940c38faeaa0aa91a8c793d1d8cd5eab5 [6546/6550] ANDROID: KVM: arm64: add support for early enablement nVHE hyp events
config: arm64-allyesconfig (https://download.01.org/0day-ci/archive/20230129/202301290349.oa107FA6-lkp@intel.com/config)
compiler: aarch64-linux-gcc (GCC) 12.1.0
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        git remote add android-common https://android.googlesource.com/kernel/common
        git fetch --no-tags android-common android14-6.1
        git checkout 605d8f6940c38faeaa0aa91a8c793d1d8cd5eab5
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=arm64 olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=arm64 SHELL=/bin/bash arch/arm64/kvm/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>

All warnings (new ones prefixed by >>):

   arch/arm64/kvm/hyp_events.c:25:27: warning: no previous prototype for 'hyp_event_trace_hyp_enter' [-Wmissing-prototypes]
      25 |         enum print_line_t hyp_event_trace_##__name(struct trace_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/kvm/hyp_events.c:25:27: warning: no previous prototype for 'hyp_event_trace_hyp_exit' [-Wmissing-prototypes]
      25 |         enum print_line_t hyp_event_trace_##__name(struct trace_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:204:6: warning: no previous prototype for 'kvm_hyp_events_enable_early' [-Wmissing-prototypes]
     204 | bool kvm_hyp_events_enable_early(void)
         |      ^~~~~~~~~~~~~~~~~~~~~~~~~~~
   arch/arm64/kvm/hyp_events.c:239:6: warning: no previous prototype for 'kvm_hyp_init_events_tracefs' [-Wmissing-prototypes]
     239 | void kvm_hyp_init_events_tracefs(struct dentry *parent)
         |      ^~~~~~~~~~~~~~~~~~~~~~~~~~~
   arch/arm64/kvm/hyp_events.c:271:5: warning: no previous prototype for 'kvm_hyp_init_events' [-Wmissing-prototypes]
     271 | int kvm_hyp_init_events(void)
         |     ^~~~~~~~~~~~~~~~~~~


vim +/kvm_hyp_events_enable_early +204 arch/arm64/kvm/hyp_events.c

   203	
 > 204	bool kvm_hyp_events_enable_early(void)
   205	{
   206		char *token, *buf = early_events;
   207		bool enabled = false;
   208	
   209		while (true) {
   210			token = strsep(&buf, ",");
   211	
   212			if (!token)
   213				break;
   214	
   215			if (*token) {
   216				struct hyp_event *event;
   217				int ret;
   218	
   219				event = find_hyp_event(token);
   220				if (event) {
   221					ret = enable_hyp_event(event, true);
   222					if (ret)
   223						pr_warn("Couldn't enable hyp event %s:%d\n",
   224							token, ret);
   225					else
   226						enabled = true;
   227				} else {
   228					pr_warn("Couldn't find hyp event %s\n", token);
   229				}
   230			}
   231	
   232			if (buf)
   233				*(buf - 1) = ',';
   234		}
   235	
   236		return enabled;
   237	}
   238	

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests