vmalloc: add __get_vm_area_caller() (c2968612) · Commits · 戴 / test

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:

Benjamin Herrenschmidt <benh@kernel.crashing.org> Reviewed-by:

KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Signed-off-by:

Andrew Morton <akpm@linux-foundation.org> Signed-off-by:

Linus Torvalds <torvalds@linux-foundation.org>

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

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