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Subject[linux-rt-devel:linux-5.13.y-rt-rebase 95/222] kernel/locking/rtmutex_api.c:491: warning: expecting prototype for rwsem_rt_mutex_try_lock_nolockdep(). Prototype was for rwsem_rt_mutex_trylock() instead
tree:   https://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-5.13.y-rt-rebase
head: 7e175e6b59975c8901ad370f7818937f68de45c1
commit: e03cbdcf154eddbc014705b6e2ebacd755d6ab39 [95/222] locking/rtmutex: Provide lockdep less variants of rtmutex interfaces
config: powerpc-allyesconfig (attached as .config)
compiler: powerpc64-linux-gcc (GCC) 9.3.0
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
# https://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git/commit/?id=e03cbdcf154eddbc014705b6e2ebacd755d6ab39
git remote add linux-rt-devel https://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git
git fetch --no-tags linux-rt-devel linux-5.13.y-rt-rebase
git checkout e03cbdcf154eddbc014705b6e2ebacd755d6ab39
# save the attached .config to linux build tree
mkdir build_dir
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross O=build_dir ARCH=powerpc SHELL=/bin/bash kernel/locking/ kernel/rcu/

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

All warnings (new ones prefixed by >>):

>> kernel/locking/rtmutex_api.c:491: warning: expecting prototype for rwsem_rt_mutex_try_lock_nolockdep(). Prototype was for rwsem_rt_mutex_trylock() instead


vim +491 kernel/locking/rtmutex_api.c

481
482 /**
483 * rwsem_rt_mutex_try_lock_nolockdep - Try to lock a rt_mutex
484 * @lock: The rt_mutex to be locked
485 *
486 * The function does no lockdep operations on @lock. The lockdep state
487 * changes have to be done on the callsite related to the locking primitive
488 * which embeds the rtmutex. Otherwise lockdep has double tracking.
489 */
490 int __sched rwsem_rt_mutex_trylock(struct rt_mutex *lock)
> 491 {
492 if (IS_ENABLED(CONFIG_DEBUG_RT_MUTEXES) &&
493 WARN_ON_ONCE(in_nmi() | in_hardirq()))
494 return 0;
495
496 if (likely(rt_mutex_cmpxchg_acquire(lock, NULL, current)))
497 return 1;
498
499 return rt_mutex_slowtrylock(lock);
500 }
501

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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