Re: [PATCH v2 03/11] unwind: Introduce SFrame user space unwinding

Re: [PATCH v2 03/11] unwind: Introduce SFrame user space unwinding

[kernel test robot]

Hi Josh,

kernel test robot noticed the following build errors:

[auto build test ERROR on perf-tools-next/perf-tools-next]
[also build test ERROR on tip/perf/core perf-tools/perf-tools linus/master v6.11-rc7 next-20240913]
[cannot apply to acme/perf/core]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Josh-Poimboeuf/unwind-Introduce-generic-user-space-unwinding-interface/20240914-070619
base:   https://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools-next.git perf-tools-next
patch link:    https://lore.kernel.org/r/ca2e603ae3dcfa3e836162ed8c301fd4d9fd4058.1726268190.git.jpoimboe%40kernel.org
patch subject: [PATCH v2 03/11] unwind: Introduce SFrame user space unwinding
config: arm-allnoconfig (https://download.01.org/0day-ci/archive/20240914/202409141653.JlQG6bQS-lkp@intel.com/config)
compiler: clang version 20.0.0git (https://github.com/llvm/llvm-project bf684034844c660b778f0eba103582f582b710c9)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240914/202409141653.JlQG6bQS-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/202409141653.JlQG6bQS-lkp@intel.com/

All errors (new ones prefixed by >>):

   In file included from mm/init-mm.c:8:
   In file included from include/linux/mman.h:5:
   In file included from include/linux/mm.h:2232:
   include/linux/vmstat.h:517:36: warning: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Wenum-enum-conversion]
     517 |         return node_stat_name(NR_LRU_BASE + lru) + 3; // skip "nr_"
         |                               ~~~~~~~~~~~ ^ ~~~
>> mm/init-mm.c:48:26: error: expected expression
      48 |         INIT_MM_CONTEXT(init_mm),
         |                                 ^
   mm/init-mm.c:49:16: error: expected expression
      49 |         INIT_MM_SFRAME,
         |                       ^
   1 warning and 2 errors generated.


vim +48 mm/init-mm.c

    22	
    23	/*
    24	 * For dynamically allocated mm_structs, there is a dynamically sized cpumask
    25	 * at the end of the structure, the size of which depends on the maximum CPU
    26	 * number the system can see. That way we allocate only as much memory for
    27	 * mm_cpumask() as needed for the hundreds, or thousands of processes that
    28	 * a system typically runs.
    29	 *
    30	 * Since there is only one init_mm in the entire system, keep it simple
    31	 * and size this cpu_bitmask to NR_CPUS.
    32	 */
    33	struct mm_struct init_mm = {
    34		.mm_mt		= MTREE_INIT_EXT(mm_mt, MM_MT_FLAGS, init_mm.mmap_lock),
    35		.pgd		= swapper_pg_dir,
    36		.mm_users	= ATOMIC_INIT(2),
    37		.mm_count	= ATOMIC_INIT(1),
    38		.write_protect_seq = SEQCNT_ZERO(init_mm.write_protect_seq),
    39		MMAP_LOCK_INITIALIZER(init_mm)
    40		.page_table_lock =  __SPIN_LOCK_UNLOCKED(init_mm.page_table_lock),
    41		.arg_lock	=  __SPIN_LOCK_UNLOCKED(init_mm.arg_lock),
    42		.mmlist		= LIST_HEAD_INIT(init_mm.mmlist),
    43	#ifdef CONFIG_PER_VMA_LOCK
    44		.mm_lock_seq	= 0,
    45	#endif
    46		.user_ns	= &init_user_ns,
    47		.cpu_bitmap	= CPU_BITS_NONE,
  > 48		INIT_MM_CONTEXT(init_mm),
    49		INIT_MM_SFRAME,
    50	};
    51	

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