These functions are used only by percpu memory allocator on SMP.
Don't build them on UP.
Signed-off-by: Tejun Heo <tj@xxxxxxxxxx>
Cc: Nick Piggin <npiggin@xxxxxxxxx>
---
(resending w/ Nick's new email address)
So, something like these three patches. Also available in the
following git tree.
git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu.git review-up
Nick, can I route this one through percpu tree?
Thanks.
include/linux/vmalloc.h | 2 ++
mm/vmalloc.c | 2 ++
2 files changed, 4 insertions(+), 0 deletions(-)
diff --git a/include/linux/vmalloc.h b/include/linux/vmalloc.h
index de05e96..3d510e8 100644
--- a/include/linux/vmalloc.h
+++ b/include/linux/vmalloc.h
@@ -115,10 +115,12 @@ extern rwlock_t vmlist_lock;
extern struct vm_struct *vmlist;
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,
const size_t *sizes, int nr_vms,
size_t align, gfp_t gfp_mask);
void pcpu_free_vm_areas(struct vm_struct **vms, int nr_vms);
+#endif
#endif /* _LINUX_VMALLOC_H */
diff --git a/mm/vmalloc.c b/mm/vmalloc.c
index b7e314b..eb57a63 100644
--- a/mm/vmalloc.c
+++ b/mm/vmalloc.c
@@ -2052,6 +2052,7 @@ void free_vm_area(struct vm_struct *area)
}
EXPORT_SYMBOL_GPL(free_vm_area);
+#ifdef CONFIG_SMP
static struct vmap_area *node_to_va(struct rb_node *n)
{
return n ? rb_entry(n, struct vmap_area, rb_node) : NULL;
@@ -2332,6 +2333,7 @@ void pcpu_free_vm_areas(struct vm_struct **vms, int nr_vms)
free_vm_area(vms[i]);
kfree(vms);
}
+#endif /* CONFIG_SMP */
#ifdef CONFIG_PROC_FS
static void *s_start(struct seq_file *m, loff_t *pos)
--
1.7.1
--
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