percpu: build first chunk allocators selectively
There's no need to build unused first chunk allocators in. Define
CONFIG_NEED_PER_CPU_*_FIRST_CHUNK and let archs enable them
selectively.
Signed-off-by: Tejun Heo <tj@kernel.org>
diff --git a/include/linux/percpu.h b/include/linux/percpu.h
index 7989f61..e26788e 100644
--- a/include/linux/percpu.h
+++ b/include/linux/percpu.h
@@ -70,17 +70,21 @@
ssize_t dyn_size, size_t unit_size,
void *base_addr, const int *unit_map);
+#ifdef CONFIG_NEED_PER_CPU_EMBED_FIRST_CHUNK
extern ssize_t __init pcpu_embed_first_chunk(
size_t static_size, size_t reserved_size,
ssize_t dyn_size);
+#endif
+#ifdef CONFIG_NEED_PER_CPU_PAGE_FIRST_CHUNK
extern ssize_t __init pcpu_page_first_chunk(
size_t static_size, size_t reserved_size,
pcpu_fc_alloc_fn_t alloc_fn,
pcpu_fc_free_fn_t free_fn,
pcpu_fc_populate_pte_fn_t populate_pte_fn);
+#endif
-#ifdef CONFIG_NEED_MULTIPLE_NODES
+#ifdef CONFIG_NEED_PER_CPU_LPAGE_FIRST_CHUNK
extern int __init pcpu_lpage_build_unit_map(
size_t static_size, size_t reserved_size,
ssize_t *dyn_sizep, size_t *unit_sizep,
@@ -98,27 +102,6 @@
extern void *pcpu_lpage_remapped(void *kaddr);
#else
-static inline int pcpu_lpage_build_unit_map(
- size_t static_size, size_t reserved_size,
- ssize_t *dyn_sizep, size_t *unit_sizep,
- size_t lpage_size, int *unit_map,
- pcpu_fc_cpu_distance_fn_t cpu_distance_fn)
-{
- return -EINVAL;
-}
-
-static inline ssize_t __init pcpu_lpage_first_chunk(
- size_t static_size, size_t reserved_size,
- size_t dyn_size, size_t unit_size,
- size_t lpage_size, const int *unit_map,
- int nr_units,
- pcpu_fc_alloc_fn_t alloc_fn,
- pcpu_fc_free_fn_t free_fn,
- pcpu_fc_map_fn_t map_fn)
-{
- return -EINVAL;
-}
-
static inline void *pcpu_lpage_remapped(void *kaddr)
{
return NULL;