In file included from ./arch/x86/include/asm/percpu.h:615,
                 from ./arch/x86/include/asm/preempt.h:6,
                 from ./include/linux/preempt.h:79,
                 from ./include/linux/alloc_tag.h:11,
                 from lib/alloc_tag.c:2:
./include/linux/alloc_tag.h: In function ‘__alloc_tag_ref_set’:
./include/asm-generic/percpu.h:155:9: error: implicit declaration of function ‘raw_local_irq_save’ [-Werror=implicit-function-declaration]
  155 |         raw_local_irq_save(__flags);                                    \
      |         ^~~~~~~~~~~~~~~~~~
./include/asm-generic/percpu.h:410:41: note: in expansion of macro ‘this_cpu_generic_to_op’
  410 | #define this_cpu_add_8(pcp, val)        this_cpu_generic_to_op(pcp, val, +=)
      |                                         ^~~~~~~~~~~~~~~~~~~~~~
./include/linux/percpu-defs.h:368:25: note: in expansion of macro ‘this_cpu_add_8’
  368 |                 case 8: stem##8(variable, __VA_ARGS__);break;           \
      |                         ^~~~
./include/linux/percpu-defs.h:491:41: note: in expansion of macro ‘__pcpu_size_call’
  491 | #define this_cpu_add(pcp, val)          __pcpu_size_call(this_cpu_add_, pcp, val)
      |                                         ^~~~~~~~~~~~~~~~
./include/linux/percpu-defs.h:501:41: note: in expansion of macro ‘this_cpu_add’
  501 | #define this_cpu_inc(pcp)               this_cpu_add(pcp, 1)
      |                                         ^~~~~~~~~~~~
./include/linux/alloc_tag.h:106:9: note: in expansion of macro ‘this_cpu_inc’
  106 |         this_cpu_inc(tag->counters->calls);
      |         ^~~~~~~~~~~~
./include/asm-generic/percpu.h:157:9: error: implicit declaration of function ‘raw_local_irq_restore’ [-Werror=implicit-function-declaration]
  157 |         raw_local_irq_restore(__flags);                                 \
      |         ^~~~~~~~~~~~~~~~~~~~~
./include/asm-generic/percpu.h:410:41: note: in expansion of macro ‘this_cpu_generic_to_op’
  410 | #define this_cpu_add_8(pcp, val)        this_cpu_generic_to_op(pcp, val, +=)
      |                                         ^~~~~~~~~~~~~~~~~~~~~~
./include/linux/percpu-defs.h:368:25: note: in expansion of macro ‘this_cpu_add_8’
  368 |                 case 8: stem##8(variable, __VA_ARGS__);break;           \
      |                         ^~~~
./include/linux/percpu-defs.h:491:41: note: in expansion of macro ‘__pcpu_size_call’
  491 | #define this_cpu_add(pcp, val)          __pcpu_size_call(this_cpu_add_, pcp, val)
      |                                         ^~~~~~~~~~~~~~~~
./include/linux/percpu-defs.h:501:41: note: in expansion of macro ‘this_cpu_add’
  501 | #define this_cpu_inc(pcp)               this_cpu_add(pcp, 1)
      |                                         ^~~~~~~~~~~~
./include/linux/alloc_tag.h:106:9: note: in expansion of macro ‘this_cpu_inc’
  106 |         this_cpu_inc(tag->counters->calls);
      |         ^~~~~~~~~~~~
cc1: some warnings being treated as errors
make[3]: *** [scripts/Makefile.build:244: lib/alloc_tag.o] Error 1
make[2]: *** [scripts/Makefile.build:485: lib] Error 2
make[1]: *** [/home/klara/git/linux/Makefile:1919: .] Error 2
make: *** [Makefile:240: __sub-make] Error 2