[tip:core/urgent 1/1] kernel/smpboot.c:50:20: sparse: sparse: duplicate inline

[tip:core/urgent 1/1] kernel/smpboot.c:50:20: sparse: sparse: duplicate inline

[kernel test robot]

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CC: kbuild-all(a)lists.01.org
CC: linux-kernel(a)vger.kernel.org
CC: x86(a)kernel.org
TO: Ingo Molnar <mingo@kernel.org>

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git core/urgent
head:   e9ba16e68cce2f85e9f5d2eba5c0453f1a741fd2
commit: e9ba16e68cce2f85e9f5d2eba5c0453f1a741fd2 [1/1] smpboot: Mark idle_init() as __always_inlined to work around aggressive compiler un-inlining
:::::: branch date: 8 hours ago
:::::: commit date: 8 hours ago
config: mips-randconfig-s031-20210713 (attached as .config)
compiler: mipsel-linux-gcc (GCC) 9.3.0
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: v0.6.3-341-g8af24329-dirty
        # https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/commit/?id=e9ba16e68cce2f85e9f5d2eba5c0453f1a741fd2
        git remote add tip https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git
        git fetch --no-tags tip core/urgent
        git checkout e9ba16e68cce2f85e9f5d2eba5c0453f1a741fd2
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=mips SHELL=/bin/bash

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


sparse warnings: (new ones prefixed by >>)
   command-line: note: in included file:
   builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_ACQUIRE redefined
   builtin:0:0: sparse: this was the original definition
   builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_SEQ_CST redefined
   builtin:0:0: sparse: this was the original definition
   builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_ACQ_REL redefined
   builtin:0:0: sparse: this was the original definition
   builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_RELEASE redefined
   builtin:0:0: sparse: this was the original definition
>> kernel/smpboot.c:50:20: sparse: sparse: duplicate inline

vim +50 kernel/smpboot.c

29d5e0476e1c4a Thomas Gleixner  2012-04-20  43  
4a70d2d9909b43 Srivatsa S. Bhat 2012-05-24  44  /**
4a70d2d9909b43 Srivatsa S. Bhat 2012-05-24  45   * idle_init - Initialize the idle thread for a cpu
4a70d2d9909b43 Srivatsa S. Bhat 2012-05-24  46   * @cpu:	The cpu for which the idle thread should be initialized
4a70d2d9909b43 Srivatsa S. Bhat 2012-05-24  47   *
4a70d2d9909b43 Srivatsa S. Bhat 2012-05-24  48   * Creates the thread if it does not exist.
4a70d2d9909b43 Srivatsa S. Bhat 2012-05-24  49   */
e9ba16e68cce2f Ingo Molnar      2021-07-11 @50  static inline void __always_inline idle_init(unsigned int cpu)
29d5e0476e1c4a Thomas Gleixner  2012-04-20  51  {
3bb5d2ee396aab Suresh Siddha    2012-04-20  52  	struct task_struct *tsk = per_cpu(idle_threads, cpu);
3bb5d2ee396aab Suresh Siddha    2012-04-20  53  
3bb5d2ee396aab Suresh Siddha    2012-04-20  54  	if (!tsk) {
3bb5d2ee396aab Suresh Siddha    2012-04-20  55  		tsk = fork_idle(cpu);
3bb5d2ee396aab Suresh Siddha    2012-04-20  56  		if (IS_ERR(tsk))
3bb5d2ee396aab Suresh Siddha    2012-04-20  57  			pr_err("SMP: fork_idle() failed for CPU %u\n", cpu);
3bb5d2ee396aab Suresh Siddha    2012-04-20  58  		else
3bb5d2ee396aab Suresh Siddha    2012-04-20  59  			per_cpu(idle_threads, cpu) = tsk;
3bb5d2ee396aab Suresh Siddha    2012-04-20  60  	}
29d5e0476e1c4a Thomas Gleixner  2012-04-20  61  }
29d5e0476e1c4a Thomas Gleixner  2012-04-20  62  

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

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