linux-kernel - Re: [PATCH v2 04/11] rv: Add option for nested monitors and include sched

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Message-ID: <202502170630.xSYE4cUk-lkp@intel.com>
Date: Mon, 17 Feb 2025 06:39:41 +0800
From: kernel test robot <lkp@...el.com>
To: Gabriele Monaco <gmonaco@...hat.com>, linux-kernel@...r.kernel.org,
	Steven Rostedt <rostedt@...dmis.org>,
	linux-trace-kernel@...r.kernel.org
Cc: oe-kbuild-all@...ts.linux.dev, Gabriele Monaco <gmonaco@...hat.com>,
	Ingo Molnar <mingo@...hat.com>, Juri Lelli <juri.lelli@...hat.com>
Subject: Re: [PATCH v2 04/11] rv: Add option for nested monitors and include
 sched

Hi Gabriele,

kernel test robot noticed the following build warnings:

[auto build test WARNING on 4dc1d1bec89864d8076e5ab314f86f46442bfb02]

url:    https://github.com/intel-lab-lkp/linux/commits/Gabriele-Monaco/tracing-Fix-DECLARE_TRACE_CONDITION/20250213-171642
base:   4dc1d1bec89864d8076e5ab314f86f46442bfb02
patch link:    https://lore.kernel.org/r/20250213090819.419470-5-gmonaco%40redhat.com
patch subject: [PATCH v2 04/11] rv: Add option for nested monitors and include sched
config: parisc-randconfig-r112-20250217 (https://download.01.org/0day-ci/archive/20250217/202502170630.xSYE4cUk-lkp@intel.com/config)
compiler: hppa-linux-gcc (GCC) 14.2.0
reproduce: (https://download.01.org/0day-ci/archive/20250217/202502170630.xSYE4cUk-lkp@intel.com/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 <lkp@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202502170630.xSYE4cUk-lkp@intel.com/

All warnings (new ones prefixed by >>):

   In file included from include/trace/define_trace.h:119,
                    from kernel/trace/rv/rv_trace.h:130,
                    from kernel/trace/rv/rv.c:148:
>> include/trace/trace_events.h:477:13: warning: 'print_fmt_error_da_monitor' defined but not used [-Wunused-variable]
     477 | static char print_fmt_##call[] = print;                                 \
         |             ^~~~~~~~~~
   kernel/trace/rv/./rv_trace.h:39:1: note: in expansion of macro 'DECLARE_EVENT_CLASS'
      39 | DECLARE_EVENT_CLASS(error_da_monitor,
         | ^~~~~~~~~~~~~~~~~~~
>> include/trace/trace_events.h:477:13: warning: 'print_fmt_event_da_monitor' defined but not used [-Wunused-variable]
     477 | static char print_fmt_##call[] = print;                                 \
         |             ^~~~~~~~~~
   kernel/trace/rv/./rv_trace.h:12:1: note: in expansion of macro 'DECLARE_EVENT_CLASS'
      12 | DECLARE_EVENT_CLASS(event_da_monitor,
         | ^~~~~~~~~~~~~~~~~~~
>> include/trace/trace_events.h:223:37: warning: 'trace_event_type_funcs_error_da_monitor' defined but not used [-Wunused-variable]
     223 | static struct trace_event_functions trace_event_type_funcs_##call = {   \
         |                                     ^~~~~~~~~~~~~~~~~~~~~~~
   kernel/trace/rv/./rv_trace.h:39:1: note: in expansion of macro 'DECLARE_EVENT_CLASS'
      39 | DECLARE_EVENT_CLASS(error_da_monitor,
         | ^~~~~~~~~~~~~~~~~~~
>> include/trace/trace_events.h:223:37: warning: 'trace_event_type_funcs_event_da_monitor' defined but not used [-Wunused-variable]
     223 | static struct trace_event_functions trace_event_type_funcs_##call = {   \
         |                                     ^~~~~~~~~~~~~~~~~~~~~~~
   kernel/trace/rv/./rv_trace.h:12:1: note: in expansion of macro 'DECLARE_EVENT_CLASS'
      12 | DECLARE_EVENT_CLASS(event_da_monitor,
         | ^~~~~~~~~~~~~~~~~~~


vim +/print_fmt_error_da_monitor +477 include/trace/trace_events.h

46ac51822a6a0b Steven Rostedt (Red Hat  2015-09-23  473) 
46ac51822a6a0b Steven Rostedt (Red Hat  2015-09-23  474) #undef DECLARE_EVENT_CLASS
46ac51822a6a0b Steven Rostedt (Red Hat  2015-09-23  475) #define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print)	\
46ac51822a6a0b Steven Rostedt (Red Hat  2015-09-23  476) _TRACE_PERF_PROTO(call, PARAMS(proto));					\
46ac51822a6a0b Steven Rostedt (Red Hat  2015-09-23 @477) static char print_fmt_##call[] = print;					\
46ac51822a6a0b Steven Rostedt (Red Hat  2015-09-23  478) static struct trace_event_class __used __refdata event_class_##call = { \
46ac51822a6a0b Steven Rostedt (Red Hat  2015-09-23  479) 	.system			= TRACE_SYSTEM_STRING,			\
04ae87a52074e2 Peter Zijlstra           2019-10-24  480  	.fields_array		= trace_event_fields_##call,		\
46ac51822a6a0b Steven Rostedt (Red Hat  2015-09-23  481) 	.fields			= LIST_HEAD_INIT(event_class_##call.fields),\
46ac51822a6a0b Steven Rostedt (Red Hat  2015-09-23  482) 	.raw_init		= trace_event_raw_init,			\
46ac51822a6a0b Steven Rostedt (Red Hat  2015-09-23  483) 	.probe			= trace_event_raw_event_##call,		\
46ac51822a6a0b Steven Rostedt (Red Hat  2015-09-23  484) 	.reg			= trace_event_reg,			\
46ac51822a6a0b Steven Rostedt (Red Hat  2015-09-23  485) 	_TRACE_PERF_INIT(call)						\
46ac51822a6a0b Steven Rostedt (Red Hat  2015-09-23  486) };
46ac51822a6a0b Steven Rostedt (Red Hat  2015-09-23  487) 

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