[tglx-devel:rseq/cid 60/64] kernel/sched/sched.h:3595:30: error: expected expression

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

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/tglx/devel.git rseq/cid
head:   e196d67a03daa4beb27afc2961845664ac3ef3d5
commit: a430e9c31893c17c9c13bcef7dfbdad1aa857761 [60/64] sched/mmcid: Provide new scheduler CID mechanism
config: s390-allmodconfig (https://download.01.org/0day-ci/archive/20251016/202510160847.giQBj835-lkp@intel.com/config)
compiler: clang version 18.1.8 (https://github.com/llvm/llvm-project 3b5b5c1ec4a3095ab096dd780e84d7ab81f3d7ff)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251016/202510160847.giQBj835-lkp@intel.com/reproduce)

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/202510160847.giQBj835-lkp@intel.com/

All errors (new ones prefixed by >>):

   In file included from kernel/sched/core.c:89:
>> kernel/sched/sched.h:3595:30: error: expected expression
    3595 |         for (; cid == MM_CID_UNSET; cpu_relax())
         |                                     ^
   arch/s390/include/asm/processor.h:291:21: note: expanded from macro 'cpu_relax'
     291 | #define cpu_relax() barrier()
         |                     ^
   include/linux/compiler.h:85:20: note: expanded from macro 'barrier'
      85 | # define barrier() __asm__ __volatile__("": : :"memory")
         |                    ^
   In file included from kernel/sched/core.c:89:
>> kernel/sched/sched.h:3595:30: error: expected ')'
   arch/s390/include/asm/processor.h:291:21: note: expanded from macro 'cpu_relax'
     291 | #define cpu_relax() barrier()
         |                     ^
   include/linux/compiler.h:85:20: note: expanded from macro 'barrier'
      85 | # define barrier() __asm__ __volatile__("": : :"memory")
         |                    ^
   kernel/sched/sched.h:3595:6: note: to match this '('
    3595 |         for (; cid == MM_CID_UNSET; cpu_relax())
         |             ^
   2 errors generated.


vim +3595 kernel/sched/sched.h

  3590	
  3591	static inline unsigned int mm_get_cid(struct mm_struct *mm)
  3592	{
  3593		unsigned int cid = __mm_get_cid(mm, READ_ONCE(mm->mm_cid.max_cids));
  3594	
> 3595		for (; cid == MM_CID_UNSET; cpu_relax())
  3596			cid = __mm_get_cid(mm, nr_cpu_ids);
  3597	
  3598		return cid;
  3599	}
  3600	

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