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Commit 4f8b02b4 authored by Tejun Heo's avatar Tejun Heo
Browse files

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



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

Signed-off-by: default avatarTejun Heo <tj@kernel.org>
Cc: Nick Piggin <npiggin@kernel.dk>
Reviewed-by: default avatarChrsitoph Lameter <cl@linux.com>
parent d56557af

include/linux/vmalloc.h

+2 −0
Original line number Diff line number Diff line
@@ -117,10 +117,12 @@ 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 */

mm/vmalloc.c

+2 −0
Original line number Diff line number Diff line
@@ -2056,6 +2056,7 @@ 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;
@@ -2336,6 +2337,7 @@ 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)