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Message-ID: <202107280431.v5gKUCaf-lkp@intel.com>
Date: Wed, 28 Jul 2021 04:40:36 +0800
From: kernel test robot <lkp@...el.com>
To: Peter Zijlstra <peterz@...radead.org>
Cc: clang-built-linux@...glegroups.com, kbuild-all@...ts.01.org,
linux-kernel@...r.kernel.org, Thomas Gleixner <tglx@...utronix.de>
Subject: [tglx-devel:rtmutex 12/62] kernel/locking/locktorture.c:468:8:
error: implicit declaration of function '__RT_MUTEX_BASE_INITIALIZE'
tree: https://git.kernel.org/pub/scm/linux/kernel/git/tglx/devel.git rtmutex
head: 464d92f29d4fc8581adb0dc25bb8c1d108452fa6
commit: 62ee7142ca57390ba70945e6180e05f4fb1fc73b [12/62] rtmutex: Split out the inner parts of struct rtmutex
config: x86_64-randconfig-a003-20210727 (attached as .config)
compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project c658b472f3e61e1818e1909bf02f3d65470018a5)
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
# install x86_64 cross compiling tool for clang build
# apt-get install binutils-x86-64-linux-gnu
# https://git.kernel.org/pub/scm/linux/kernel/git/tglx/devel.git/commit/?id=62ee7142ca57390ba70945e6180e05f4fb1fc73b
git remote add tglx-devel https://git.kernel.org/pub/scm/linux/kernel/git/tglx/devel.git
git fetch --no-tags tglx-devel rtmutex
git checkout 62ee7142ca57390ba70945e6180e05f4fb1fc73b
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>
All error/warnings (new ones prefixed by >>):
>> kernel/locking/locktorture.c:468:8: error: implicit declaration of function '__RT_MUTEX_BASE_INITIALIZE' [-Werror,-Wimplicit-function-declaration]
static DEFINE_RT_MUTEX(torture_rtmutex);
^
include/linux/rtmutex.h:81:30: note: expanded from macro 'DEFINE_RT_MUTEX'
struct rt_mutex mutexname = __RT_MUTEX_INITIALIZER(mutexname)
^
include/linux/rtmutex.h:76:13: note: expanded from macro '__RT_MUTEX_INITIALIZER'
.rtmutex = __RT_MUTEX_BASE_INITIALIZE(mutexname.rtmutex) \
^
>> kernel/locking/locktorture.c:468:8: warning: suggest braces around initialization of subobject [-Wmissing-braces]
static DEFINE_RT_MUTEX(torture_rtmutex);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/rtmutex.h:81:30: note: expanded from macro 'DEFINE_RT_MUTEX'
struct rt_mutex mutexname = __RT_MUTEX_INITIALIZER(mutexname)
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/rtmutex.h:76:13: note: expanded from macro '__RT_MUTEX_INITIALIZER'
.rtmutex = __RT_MUTEX_BASE_INITIALIZE(mutexname.rtmutex) \
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>> kernel/locking/locktorture.c:468:8: warning: suggest braces around initialization of subobject [-Wmissing-braces]
static DEFINE_RT_MUTEX(torture_rtmutex);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/rtmutex.h:81:30: note: expanded from macro 'DEFINE_RT_MUTEX'
struct rt_mutex mutexname = __RT_MUTEX_INITIALIZER(mutexname)
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/rtmutex.h:76:13: note: expanded from macro '__RT_MUTEX_INITIALIZER'
.rtmutex = __RT_MUTEX_BASE_INITIALIZE(mutexname.rtmutex) \
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>> kernel/locking/locktorture.c:468:8: warning: suggest braces around initialization of subobject [-Wmissing-braces]
static DEFINE_RT_MUTEX(torture_rtmutex);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/rtmutex.h:81:30: note: expanded from macro 'DEFINE_RT_MUTEX'
struct rt_mutex mutexname = __RT_MUTEX_INITIALIZER(mutexname)
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/rtmutex.h:76:13: note: expanded from macro '__RT_MUTEX_INITIALIZER'
.rtmutex = __RT_MUTEX_BASE_INITIALIZE(mutexname.rtmutex) \
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>> kernel/locking/locktorture.c:468:8: error: initializer element is not a compile-time constant
static DEFINE_RT_MUTEX(torture_rtmutex);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/rtmutex.h:81:30: note: expanded from macro 'DEFINE_RT_MUTEX'
struct rt_mutex mutexname = __RT_MUTEX_INITIALIZER(mutexname)
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/rtmutex.h:76:13: note: expanded from macro '__RT_MUTEX_INITIALIZER'
.rtmutex = __RT_MUTEX_BASE_INITIALIZE(mutexname.rtmutex) \
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
3 warnings and 2 errors generated.
vim +/__RT_MUTEX_BASE_INITIALIZE +468 kernel/locking/locktorture.c
0186a6cbdc6287 Chris Wilson 2016-12-01 466
095777c417db14 Davidlohr Bueso 2015-07-22 467 #ifdef CONFIG_RT_MUTEXES
095777c417db14 Davidlohr Bueso 2015-07-22 @468 static DEFINE_RT_MUTEX(torture_rtmutex);
095777c417db14 Davidlohr Bueso 2015-07-22 469
:::::: The code at line 468 was first introduced by commit
:::::: 095777c417db142970adeb776fa0cb10810b8122 locktorture: Support rtmutex torturing
:::::: TO: Davidlohr Bueso <dave@...olabs.net>
:::::: CC: Paul E. McKenney <paulmck@...ux.vnet.ibm.com>
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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