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vmalloc: pcpu_get/free_vm_areas() aren't needed on UP

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These functions are used only by percpu memory allocator on SMP.
Don't build them on UP.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Nick Piggin <npiggin@kernel.dk>
Reviewed-by: Chrsitoph Lameter <cl@linux.com>
This commit is contained in:
Tejun Heo 2010-09-03 18:22:47 +02:00
parent d56557af19
commit 4f8b02b4e5
2 changed files with 4 additions and 0 deletions
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2
include/linux/vmalloc.h
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@ -117,10 +117,12 @@ extern rwlock_t vmlist_lock;
extern struct vm_struct *vmlist; extern struct vm_struct *vmlist;
extern __init void vm_area_register_early(struct vm_struct *vm, size_t align); extern __init void vm_area_register_early(struct vm_struct *vm, size_t align);
#ifdef CONFIG_SMP
struct vm_struct **pcpu_get_vm_areas(const unsigned long *offsets, struct vm_struct **pcpu_get_vm_areas(const unsigned long *offsets,
const size_t *sizes, int nr_vms, const size_t *sizes, int nr_vms,
size_t align, gfp_t gfp_mask); size_t align, gfp_t gfp_mask);
void pcpu_free_vm_areas(struct vm_struct **vms, int nr_vms); void pcpu_free_vm_areas(struct vm_struct **vms, int nr_vms);
#endif
#endif /* _LINUX_VMALLOC_H */ #endif /* _LINUX_VMALLOC_H */

2
mm/vmalloc.c
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@ -2056,6 +2056,7 @@ void free_vm_area(struct vm_struct *area)
} }
EXPORT_SYMBOL_GPL(free_vm_area); EXPORT_SYMBOL_GPL(free_vm_area);
#ifdef CONFIG_SMP
static struct vmap_area *node_to_va(struct rb_node *n) static struct vmap_area *node_to_va(struct rb_node *n)
{ {
return n ? rb_entry(n, struct vmap_area, rb_node) : NULL; return n ? rb_entry(n, struct vmap_area, rb_node) : NULL;
@ -2336,6 +2337,7 @@ void pcpu_free_vm_areas(struct vm_struct **vms, int nr_vms)
free_vm_area(vms[i]); free_vm_area(vms[i]);
kfree(vms); kfree(vms);
} }
#endif /* CONFIG_SMP */
#ifdef CONFIG_PROC_FS #ifdef CONFIG_PROC_FS
static void *s_start(struct seq_file *m, loff_t *pos) static void *s_start(struct seq_file *m, loff_t *pos)