include/linux/genalloc.h:173: undefined reference to `gen_pool_free_owner'

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   2f1baf1fc8929e6c48370be543ad028ac7ad4131
commit: 9eca087deb0b35f3170109a9630a6c5c06c2e222 sched_ext: Sub-allocator over kernel-claimed BPF arena pages
date:   3 months ago
config: parisc-randconfig-001-20260815 (https://download.01.org/0day-ci/archive/20260815/[email protected]/config)
compiler: hppa-linux-gcc (GCC) 8.5.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260815/[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
| Fixes: 9eca087deb0b ("sched_ext: Sub-allocator over kernel-claimed BPF arena pages")
| Reported-by: kernel test robot <[email protected]>
| Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]/

All errors (new ones prefixed by >>):

   hppa-linux-ld: kernel/sched/build_policy.o: in function `scx_arena_scan_prog':
   kernel/sched/ext.c:7937: undefined reference to `bpf_prog_arena'
   hppa-linux-ld: kernel/sched/build_policy.o: in function `gen_pool_free':
>> include/linux/genalloc.h:173: undefined reference to `gen_pool_free_owner'
   hppa-linux-ld: kernel/sched/build_policy.o: in function `scx_arena_pool_init':
   kernel/sched/ext_arena.c:29: undefined reference to `gen_pool_create'
   hppa-linux-ld: kernel/sched/build_policy.o: in function `scx_arena_pool_destroy':
   kernel/sched/ext_arena.c:57: undefined reference to `gen_pool_for_each_chunk'
   hppa-linux-ld: kernel/sched/ext_arena.c:58: undefined reference to `gen_pool_destroy'
   hppa-linux-ld: kernel/sched/build_policy.o: in function `gen_pool_alloc_algo':
>> include/linux/genalloc.h:139: undefined reference to `gen_pool_alloc_algo_owner'
   hppa-linux-ld: kernel/sched/build_policy.o: in function `gen_pool_free':
>> include/linux/genalloc.h:173: undefined reference to `gen_pool_free_owner'
   hppa-linux-ld: kernel/sched/build_policy.o: in function `scx_arena_pool_init':
   kernel/sched/ext_arena.c:29: undefined reference to `gen_pool_create'


vim +173 include/linux/genalloc.h

795ee30648c7085 Dan Williams   2019-06-13  135  
795ee30648c7085 Dan Williams   2019-06-13  136  static inline unsigned long gen_pool_alloc_algo(struct gen_pool *pool,
795ee30648c7085 Dan Williams   2019-06-13  137  		size_t size, genpool_algo_t algo, void *data)
795ee30648c7085 Dan Williams   2019-06-13  138  {
795ee30648c7085 Dan Williams   2019-06-13 @139  	return gen_pool_alloc_algo_owner(pool, size, algo, data, NULL);
795ee30648c7085 Dan Williams   2019-06-13  140  }
795ee30648c7085 Dan Williams   2019-06-13  141  
795ee30648c7085 Dan Williams   2019-06-13  142  /**
795ee30648c7085 Dan Williams   2019-06-13  143   * gen_pool_alloc - allocate special memory from the pool
795ee30648c7085 Dan Williams   2019-06-13  144   * @pool: pool to allocate from
795ee30648c7085 Dan Williams   2019-06-13  145   * @size: number of bytes to allocate from the pool
795ee30648c7085 Dan Williams   2019-06-13  146   *
795ee30648c7085 Dan Williams   2019-06-13  147   * Allocate the requested number of bytes from the specified pool.
795ee30648c7085 Dan Williams   2019-06-13  148   * Uses the pool allocation function (with first-fit algorithm by default).
795ee30648c7085 Dan Williams   2019-06-13  149   * Can not be used in NMI handler on architectures without
795ee30648c7085 Dan Williams   2019-06-13  150   * NMI-safe cmpxchg implementation.
795ee30648c7085 Dan Williams   2019-06-13  151   */
795ee30648c7085 Dan Williams   2019-06-13  152  static inline unsigned long gen_pool_alloc(struct gen_pool *pool, size_t size)
795ee30648c7085 Dan Williams   2019-06-13  153  {
795ee30648c7085 Dan Williams   2019-06-13  154  	return gen_pool_alloc_algo(pool, size, pool->algo, pool->data);
795ee30648c7085 Dan Williams   2019-06-13  155  }
795ee30648c7085 Dan Williams   2019-06-13  156  
684f0d3d14f2744 Nicolin Chen   2013-11-12  157  extern void *gen_pool_dma_alloc(struct gen_pool *pool, size_t size,
684f0d3d14f2744 Nicolin Chen   2013-11-12  158  		dma_addr_t *dma);
cf394fc5f7155c2 Fredrik Noring 2019-06-25  159  extern void *gen_pool_dma_alloc_algo(struct gen_pool *pool, size_t size,
cf394fc5f7155c2 Fredrik Noring 2019-06-25  160  		dma_addr_t *dma, genpool_algo_t algo, void *data);
cf394fc5f7155c2 Fredrik Noring 2019-06-25  161  extern void *gen_pool_dma_alloc_align(struct gen_pool *pool, size_t size,
cf394fc5f7155c2 Fredrik Noring 2019-06-25  162  		dma_addr_t *dma, int align);
cf394fc5f7155c2 Fredrik Noring 2019-06-25  163  extern void *gen_pool_dma_zalloc(struct gen_pool *pool, size_t size, dma_addr_t *dma);
cf394fc5f7155c2 Fredrik Noring 2019-06-25  164  extern void *gen_pool_dma_zalloc_algo(struct gen_pool *pool, size_t size,
cf394fc5f7155c2 Fredrik Noring 2019-06-25  165  		dma_addr_t *dma, genpool_algo_t algo, void *data);
cf394fc5f7155c2 Fredrik Noring 2019-06-25  166  extern void *gen_pool_dma_zalloc_align(struct gen_pool *pool, size_t size,
cf394fc5f7155c2 Fredrik Noring 2019-06-25  167  		dma_addr_t *dma, int align);
795ee30648c7085 Dan Williams   2019-06-13  168  extern void gen_pool_free_owner(struct gen_pool *pool, unsigned long addr,
795ee30648c7085 Dan Williams   2019-06-13  169  		size_t size, void **owner);
795ee30648c7085 Dan Williams   2019-06-13  170  static inline void gen_pool_free(struct gen_pool *pool, unsigned long addr,
795ee30648c7085 Dan Williams   2019-06-13  171                  size_t size)
795ee30648c7085 Dan Williams   2019-06-13  172  {
795ee30648c7085 Dan Williams   2019-06-13 @173  	gen_pool_free_owner(pool, addr, size, NULL);
795ee30648c7085 Dan Williams   2019-06-13  174  }
795ee30648c7085 Dan Williams   2019-06-13  175  

:::::: The code at line 173 was first introduced by commit
:::::: 795ee30648c708502da9df637f83c33361d68dcc lib/genalloc: introduce chunk owners

:::::: TO: Dan Williams <[email protected]>
:::::: CC: Linus Torvalds <[email protected]>

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