[tglx-devel:rseq/cid 60/64] include/linux/compiler.h:85:20: error: expected expression before '__asm__'

[tglx-devel:rseq/cid 60/64] include/linux/compiler.h:85:20: error: expected expression before '__asm__'

[kernel test robot]

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-randconfig-002-20251016 (https://download.01.org/0day-ci/archive/20251016/202510160407.PRl7dIAf-lkp@intel.com/config)
compiler: s390-linux-gcc (GCC) 13.4.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251016/202510160407.PRl7dIAf-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/202510160407.PRl7dIAf-lkp@intel.com/

All errors (new ones prefixed by >>):

   In file included from include/linux/build_bug.h:5,
                    from include/linux/container_of.h:5,
                    from include/linux/list.h:5,
                    from include/linux/smp.h:12,
                    from include/linux/sched/clock.h:5,
                    from kernel/sched/build_utility.c:12:
   kernel/sched/sched.h: In function 'mm_get_cid':
>> include/linux/compiler.h:85:20: error: expected expression before '__asm__'
      85 | # define barrier() __asm__ __volatile__("": : :"memory")
         |                    ^~~~~~~
   arch/s390/include/asm/processor.h:291:21: note: in expansion of macro 'barrier'
     291 | #define cpu_relax() barrier()
         |                     ^~~~~~~
   kernel/sched/sched.h:3595:37: note: in expansion of macro 'cpu_relax'
    3595 |         for (; cid == MM_CID_UNSET; cpu_relax())
         |                                     ^~~~~~~~~


vim +/__asm__ +85 include/linux/compiler.h

^1da177e4c3f41 Linus Torvalds 2005-04-16  81  
^1da177e4c3f41 Linus Torvalds 2005-04-16  82  /* Optimization barrier */
^1da177e4c3f41 Linus Torvalds 2005-04-16  83  #ifndef barrier
3347acc6fcd4ee Arvind Sankar  2020-11-13  84  /* The "volatile" is due to gcc bugs */
3347acc6fcd4ee Arvind Sankar  2020-11-13 @85  # define barrier() __asm__ __volatile__("": : :"memory")
^1da177e4c3f41 Linus Torvalds 2005-04-16  86  #endif
^1da177e4c3f41 Linus Torvalds 2005-04-16  87  

:::::: The code at line 85 was first introduced by commit
:::::: 3347acc6fcd4ee71ad18a9ff9d9dac176b517329 compiler.h: fix barrier_data() on clang

:::::: TO: Arvind Sankar <nivedita@alum.mit.edu>
:::::: CC: Linus Torvalds <torvalds@linux-foundation.org>

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