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percpu: build first chunk allocators selectively

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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>
This commit is contained in:
Tejun Heo
2009-08-14 15:00:49 +09:00
parent 00ae4064b1
commit 08fc458061
3 changed files with 26 additions and 30 deletions
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27
include/linux/percpu.h
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@@ -70,17 +70,21 @@ extern size_t __init pcpu_setup_first_chunk(
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 ssize_t __init pcpu_lpage_first_chunk(
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;