Re: [PATCH 1/2] rtmutex: allow specifying a subclass for nested locking

kbuild test robot
2018-05-26T08:23:45Z

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Hi Peter,

I love your patch! Yet something to improve:

[auto build test ERROR on linus/master]
[also build test ERROR on v4.17-rc6]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url: https://github.com/0day-ci/linux/commits/Peter-Rosin/rtmutex-allow-specifying-a-subclass-for-nested-locking/20180526-140421
config: x86_64-randconfig-i0-201820 (attached as .config)
compiler: gcc-7 (Debian 7.3.0-16) 7.3.0
reproduce:
# save the attached .config to linux build tree
make ARCH=x86_64

All errors (new ones prefixed by >>):

kernel/locking/locktorture.c: In function 'torture_rtmutex_lock':
>> kernel/locking/locktorture.c:444:2: error: implicit declaration of function 'rt_mutex_lock'; did you mean 'ww_mutex_lock'? [-Werror=implicit-function-declaration]
rt_mutex_lock(&torture_rtmutex);
^~~~~~~~~~~~~
ww_mutex_lock
cc1: some warnings being treated as errors

vim +444 kernel/locking/locktorture.c

095777c4 Davidlohr Bueso 2015-07-22 441
095777c4 Davidlohr Bueso 2015-07-22 442 static int torture_rtmutex_lock(void) __acquires(torture_rtmutex)
095777c4 Davidlohr Bueso 2015-07-22 443 {
095777c4 Davidlohr Bueso 2015-07-22 @444 rt_mutex_lock(&torture_rtmutex);
095777c4 Davidlohr Bueso 2015-07-22 445 return 0;
095777c4 Davidlohr Bueso 2015-07-22 446 }
095777c4 Davidlohr Bueso 2015-07-22 447

:::::: The code at line 444 was first introduced by commit
:::::: 095777c417db142970adeb776fa0cb10810b8122 locktorture: Support rtmutex torturing

:::::: TO: Davidlohr Bueso <dave@stgolabs.net>
:::::: CC: Paul E. McKenney <paulmck@linux.vnet.ibm.com>

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