arch/parisc/kernel/cache.c:50:1: sparse: sparse: symbol 'pa_swapper_pg_lock' was not declared. Should it be static?

From: kernel test robot
Date: Mon Jul 18 2022 - 19:17:08 EST


tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 80e19f34c2887a8881084b7bb7480e9544d56b91
commit: b7795074a04669d0a023babf786d29bf67c68783 parisc: Optimize per-pagetable spinlocks
date: 1 year, 5 months ago
config: parisc-randconfig-s032-20220718 (https://download.01.org/0day-ci/archive/20220719/202207190738.uOrugo2G-lkp@xxxxxxxxx/config)
compiler: hppa-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=b7795074a04669d0a023babf786d29bf67c68783
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout b7795074a04669d0a023babf786d29bf67c68783
# 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=parisc SHELL=/bin/bash

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


sparse warnings: (new ones prefixed by >>)
>> arch/parisc/kernel/cache.c:50:1: sparse: sparse: symbol 'pa_swapper_pg_lock' was not declared. Should it be static?

vim +/pa_swapper_pg_lock +50 arch/parisc/kernel/cache.c

b37d1c1898b288 Mikulas Patocka 2019-04-28 45 * this.
^1da177e4c3f41 Linus Torvalds 2005-04-16 46 */
b37d1c1898b288 Mikulas Patocka 2019-04-28 47 DEFINE_SPINLOCK(pa_tlb_flush_lock);
b37d1c1898b288 Mikulas Patocka 2019-04-28 48
b37d1c1898b288 Mikulas Patocka 2019-04-28 49 /* Swapper page setup lock. */
b37d1c1898b288 Mikulas Patocka 2019-04-28 @50 DEFINE_SPINLOCK(pa_swapper_pg_lock);
b37d1c1898b288 Mikulas Patocka 2019-04-28 51
b37d1c1898b288 Mikulas Patocka 2019-04-28 52 #if defined(CONFIG_64BIT) && defined(CONFIG_SMP)

:::::: The code at line 50 was first introduced by commit
:::::: b37d1c1898b288c69f3dc9267bc2c41af06f4a4b parisc: Use per-pagetable spinlock

:::::: TO: Mikulas Patocka <mpatocka@xxxxxxxxxx>
:::::: CC: Helge Deller <deller@xxxxxx>

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