[jimc:folio-pool-v2-lockdep 21/21] kernel/locking/lockdep_proc.c:298:101: warning: format '%zu' expects argument of type 'size_t', but argument 6 has type 'long unsigned int'

kernel test robot <[email protected]>
Newsgroups dev.linux.lists.oe-kbuild-all
Message-ID <[email protected]>
tree:   https://github.com/jimc/linux.git folio-pool-v2-lockdep
head:   e77ee8289ea0755b0ee299348504d4568f942d71
commit: e77ee8289ea0755b0ee299348504d4568f942d71 [21/21] locking/lockdep: Report bootstrap usage, capacity, and size in /proc/lockdep_stats
config: parisc-allyesconfig (https://download.01.org/0day-ci/archive/20260818/[email protected]/config)
compiler: hppa-linux-gcc (GCC) 16.1.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260818/[email protected]/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 <[email protected]>
| Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]/

All warnings (new ones prefixed by >>):

   In file included from kernel/locking/lockdep_proc.c:25:
   kernel/locking/lockdep_internals.h: In function 'debug_class_ops_inc':
   kernel/locking/lockdep_internals.h:257:23: error: 'lock_classes' undeclared (first use in this function); did you mean 'lock_class'?
     257 |         idx = class - lock_classes;
         |                       ^~~~~~~~~~~~
         |                       lock_class
   kernel/locking/lockdep_internals.h:257:23: note: each undeclared identifier is reported only once for each function it appears in
   kernel/locking/lockdep_internals.h: In function 'debug_class_ops_read':
   kernel/locking/lockdep_internals.h:266:23: error: 'lock_classes' undeclared (first use in this function); did you mean 'lock_class'?
     266 |         idx = class - lock_classes;
         |                       ^~~~~~~~~~~~
         |                       lock_class
   kernel/locking/lockdep_proc.c: In function 'lockdep_stats_show':
>> kernel/locking/lockdep_proc.c:298:101: warning: format '%zu' expects argument of type 'size_t', but argument 6 has type 'long unsigned int' [-Wformat=]
     298 |                         seq_printf(m, " lock-classes:                  %11lu [bootstrap: %lu/%lu, %zu kB]\n",
         |                                                                                                   ~~^
         |                                                                                                     |
         |                                                                                                     unsigned int
         |                                                                                                   %lu
     299 |                                    nr_lock_classes, nr_lock_classes, BOOTSTRAP_LOCK_CLASSES_CAP,
     300 |                                    (BOOTSTRAP_LOCK_CLASSES_CAP * sizeof(struct lock_class)) / 1024);
         |                                    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~   
         |                                    |
         |                                    long unsigned int
   kernel/locking/lockdep_proc.c:315:101: warning: format '%zu' expects argument of type 'size_t', but argument 6 has type 'long unsigned int' [-Wformat=]
     315 |                         seq_printf(m, " direct dependencies:           %11lu [bootstrap: %lu/%lu, %zu kB]\n",
         |                                                                                                   ~~^
         |                                                                                                     |
         |                                                                                                     unsigned int
         |                                                                                                   %lu
     316 |                                    nr_list_entries, nr_list_entries, BOOTSTRAP_LOCKDEP_ENTRIES_CAP,
     317 |                                    (BOOTSTRAP_LOCKDEP_ENTRIES_CAP * sizeof(struct lock_list)) / 1024);
         |                                    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 
         |                                    |
         |                                    long unsigned int
   kernel/locking/lockdep_proc.c:345:101: warning: format '%zu' expects argument of type 'size_t', but argument 6 has type 'long unsigned int' [-Wformat=]
     345 |                         seq_printf(m, " dependency chains:             %11lu [bootstrap: %lu/%lu, %zu kB]\n",
         |                                                                                                   ~~^
         |                                                                                                     |
         |                                                                                                     unsigned int
         |                                                                                                   %lu
     346 |                                    lock_chain_count(), lock_chain_count(), BOOTSTRAP_LOCK_CHAINS_CAP,
     347 |                                    (BOOTSTRAP_LOCK_CHAINS_CAP * sizeof(struct lock_chain)) / 1024);
         |                                    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~    
         |                                    |
         |                                    long unsigned int
   kernel/locking/lockdep_proc.c:360:99: warning: format '%zu' expects argument of type 'size_t', but argument 6 has type 'long unsigned int' [-Wformat=]
     360 |                         seq_printf(m, " dependency chain hlocks used:  %11u [bootstrap: %u/%lu, %zu kB]\n",
         |                                                                                                 ~~^
         |                                                                                                   |
         |                                                                                                   unsigned int
         |                                                                                                 %lu
     361 |                                    chain_hlocks_used(), chain_hlocks_used(), BOOTSTRAP_CHAIN_HLOCKS_CAP,
     362 |                                    (BOOTSTRAP_CHAIN_HLOCKS_CAP * sizeof(u16)) / 1024);
         |                                    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~               
         |                                    |
         |                                    long unsigned int
   kernel/locking/lockdep_proc.c:387:101: warning: format '%zu' expects argument of type 'size_t', but argument 6 has type 'long unsigned int' [-Wformat=]
     387 |                         seq_printf(m, " stack-trace entries:           %11lu [bootstrap: %lu/%lu, %zu kB]\n",
         |                                                                                                   ~~^
         |                                                                                                     |
         |                                                                                                     unsigned int
         |                                                                                                   %lu
     388 |                                    nr_stack_trace_entries, nr_stack_trace_entries, BOOTSTRAP_STACK_TRACE_CAP,
     389 |                                    (BOOTSTRAP_STACK_TRACE_CAP * sizeof(unsigned long)) / 1024);
         |                                    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~        
         |                                    |
         |                                    long unsigned int


vim +298 kernel/locking/lockdep_proc.c

   287	
   288		{
   289			unsigned int lc_chunks = 0;
   290			size_t lc_chunk_sz = 0, lc_tail_used = 0;
   291	
   292			lockdep_class_stats(&lc_chunks, &lc_chunk_sz, &lc_tail_used);
   293			if (lc_chunks) {
   294				seq_printf(m, " lock-classes:                  %11lu [dynamic: %u x %zu kB, tail: %zu kB/%zu kB]\n",
   295					   nr_lock_classes, lc_chunks, lc_chunk_sz / 1024,
   296					   lc_tail_used / 1024, lc_chunk_sz / 1024);
   297			} else {
 > 298				seq_printf(m, " lock-classes:                  %11lu [bootstrap: %lu/%lu, %zu kB]\n",
   299					   nr_lock_classes, nr_lock_classes, BOOTSTRAP_LOCK_CLASSES_CAP,
   300					   (BOOTSTRAP_LOCK_CLASSES_CAP * sizeof(struct lock_class)) / 1024);
   301			}
   302		}
   303		seq_printf(m, " dynamic-keys:                  %11lu\n",
   304				nr_dynamic_keys);
   305		{
   306			unsigned int fp_chunks = 0;
   307			size_t fp_chunk_sz = 0, fp_tail_used = 0;
   308	
   309			lockdep_pool_stats(&fp_chunks, &fp_chunk_sz, &fp_tail_used);
   310			if (fp_chunks) {
   311				seq_printf(m, " direct dependencies:           %11lu [dynamic: %u x %zu kB, tail: %zu kB/%zu kB]\n",
   312					   nr_list_entries, fp_chunks, fp_chunk_sz / 1024,
   313					   fp_tail_used / 1024, fp_chunk_sz / 1024);
   314			} else {
   315				seq_printf(m, " direct dependencies:           %11lu [bootstrap: %lu/%lu, %zu kB]\n",
   316					   nr_list_entries, nr_list_entries, BOOTSTRAP_LOCKDEP_ENTRIES_CAP,
   317					   (BOOTSTRAP_LOCKDEP_ENTRIES_CAP * sizeof(struct lock_list)) / 1024);
   318			}
   319		}
   320		seq_printf(m, " indirect dependencies:         %11lu\n",
   321				sum_forward_deps);
   322	
   323		/*
   324		 * Total number of dependencies:
   325		 *
   326		 * All irq-safe locks may nest inside irq-unsafe locks,
   327		 * plus all the other known dependencies:
   328		 */
   329		seq_printf(m, " all direct dependencies:       %11lu\n",
   330				nr_irq_unsafe * nr_irq_safe +
   331				nr_hardirq_unsafe * nr_hardirq_safe +
   332				nr_list_entries);
   333	

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