include/linux/sync_core.h: asm/sync_core.h is included more than once.

[kernel test robot <lkp@intel.com>]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   2004cef11ea072838f99bd95cefa5c8e45df0847
commit: 4ff4c745a16c4c151a71863420811e7f406c3ec2 locking: Introduce prepare_sync_core_cmd()
date:   7 months ago
compiler: clang version 18.1.8 (https://github.com/llvm/llvm-project 3b5b5c1ec4a3095ab096dd780e84d7ab81f3d7ff)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202409200859.fKF5Xs8a-lkp@intel.com/

includecheck warnings: (new ones prefixed by >>)
>> include/linux/sync_core.h: asm/sync_core.h is included more than once.

vim +6 include/linux/sync_core.h

     4	
     5	#ifdef CONFIG_ARCH_HAS_SYNC_CORE_BEFORE_USERMODE
   > 6	#include <asm/sync_core.h>
     7	#else
     8	/*
     9	 * This is a dummy sync_core_before_usermode() implementation that can be used
    10	 * on all architectures which return to user-space through core serializing
    11	 * instructions.
    12	 * If your architecture returns to user-space through non-core-serializing
    13	 * instructions, you need to write your own functions.
    14	 */
    15	static inline void sync_core_before_usermode(void)
    16	{
    17	}
    18	#endif
    19	
    20	#ifdef CONFIG_ARCH_HAS_PREPARE_SYNC_CORE_CMD
  > 21	#include <asm/sync_core.h>
    22	#else
    23	/*
    24	 * This is a dummy prepare_sync_core_cmd() implementation that can be used on
    25	 * all architectures which provide unconditional core serializing instructions
    26	 * in switch_mm().
    27	 * If your architecture doesn't provide such core serializing instructions in
    28	 * switch_mm(), you may need to write your own functions.
    29	 */
    30	static inline void prepare_sync_core_cmd(struct mm_struct *mm)
    31	{
    32	}
    33	#endif
    34	

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