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Commit c2968612 authored by Benjamin Herrenschmidt's avatar Benjamin Herrenschmidt Committed by Linus Torvalds
Browse files

vmalloc: add __get_vm_area_caller() 



We have get_vm_area_caller() and __get_vm_area() but not
__get_vm_area_caller()

On powerpc, I use __get_vm_area() to separate the ranges of addresses
given to vmalloc vs.  ioremap (various good reasons for that) so in order
to be able to implement the new caller tracking in /proc/vmallocinfo, I
need a "_caller" variant of it.

(akpm: needed for ongoing powerpc development, so merge it early)

[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: default avatarBenjamin Herrenschmidt <benh@kernel.crashing.org>
Reviewed-by: default avatarKOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 5955c7a2

include/linux/vmalloc.h

+4 −0
Original line number Diff line number Diff line
@@ -84,6 +84,10 @@ extern struct vm_struct *get_vm_area_caller(unsigned long size, 
					unsigned long flags, void *caller);

extern struct vm_struct *__get_vm_area(unsigned long size, unsigned long flags,

					unsigned long start, unsigned long end);

extern struct vm_struct *__get_vm_area_caller(unsigned long size,

					unsigned long flags,

					unsigned long start, unsigned long end,

					void *caller);

extern struct vm_struct *get_vm_area_node(unsigned long size,

					  unsigned long flags, int node,

					  gfp_t gfp_mask);

mm/vmalloc.c

+8 −0
Original line number Diff line number Diff line
@@ -1106,6 +1106,14 @@ struct vm_struct *__get_vm_area(unsigned long size, unsigned long flags, 
}

EXPORT_SYMBOL_GPL(__get_vm_area);



struct vm_struct *__get_vm_area_caller(unsigned long size, unsigned long flags,

				       unsigned long start, unsigned long end,

				       void *caller)

{

	return __get_vm_area_node(size, flags, start, end, -1, GFP_KERNEL,

				  caller);

}



/**

 *	get_vm_area  -  reserve a contiguous kernel virtual area

 *	@size:		size of the area