linux-kernel - kernel/trace/rv/monitors/wip/wip.c:20:1: sparse: sparse: symbol 'da_mon_wip' was not declared. Should it be static?

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Date:   Fri, 2 Dec 2022 07:35:36 +0800
From:   kernel test robot <lkp@...el.com>
To:     Daniel Bristot de Oliveira <bristot@...nel.org>
Cc:     oe-kbuild-all@...ts.linux.dev, linux-kernel@...r.kernel.org,
        "Steven Rostedt (Google)" <rostedt@...dmis.org>
Subject: kernel/trace/rv/monitors/wip/wip.c:20:1: sparse: sparse: symbol
 'da_mon_wip' was not declared. Should it be static?

Hi Stephen,

First bad commit (maybe != root cause):

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   a4412fdd49dc011bcc2c0d81ac4cab7457092650
commit: 10bde81c74863472047f31304064018c40f488ee rv/monitor: Add the wip monitor
date:   4 months ago
config: powerpc-randconfig-s041-20221201
compiler: powerpc-linux-gcc (GCC) 12.1.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # apt-get install sparse
        # sparse version: v0.6.4-39-gce1a6720-dirty
        # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=10bde81c74863472047f31304064018c40f488ee
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout 10bde81c74863472047f31304064018c40f488ee
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=powerpc SHELL=/bin/bash kernel/trace/rv/

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

sparse warnings: (new ones prefixed by >>)
   kernel/trace/rv/monitors/wip/wip.c: note: in included file:
   kernel/trace/rv/monitors/wip/wip.h:30:22: sparse: sparse: symbol 'automaton_wip' was not declared. Should it be static?

vim +/da_mon_wip +20 kernel/trace/rv/monitors/wip/wip.c

8812d21219b9c64 Daniel Bristot de Oliveira 2022-07-29  18  
8812d21219b9c64 Daniel Bristot de Oliveira 2022-07-29 @19  struct rv_monitor rv_wip;
8812d21219b9c64 Daniel Bristot de Oliveira 2022-07-29 @20  DECLARE_DA_MON_PER_CPU(wip, unsigned char);
8812d21219b9c64 Daniel Bristot de Oliveira 2022-07-29  21  

:::::: The code at line 20 was first introduced by commit
:::::: 8812d21219b9c649dd25eb93915e00939944aeb7 rv/monitor: Add the wip monitor skeleton created by dot2k

:::::: TO: Daniel Bristot de Oliveira <bristot@...nel.org>
:::::: CC: Steven Rostedt (Google) <rostedt@...dmis.org>

-- 
0-DAY CI Kernel Test Service
https://01.org/lkp

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