Commit 359be678 authored Oct 02, 2017 by Matthieu CASTET Committed by Will Deacon Oct 04, 2017

dma mapping : export caller to vmallocinfo



For example on arm64 board, this add info to "user" entries in vmallocinfo

Before :
[...]
0xffffff8008997000 0xffffff80089d8000 266240 user
[...]

Afer :
[...]
0xffffff8008997000 0xffffff80089d8000 266240 atomic_pool_init+0x0/0x1d8 user
[...]

This help to debug mapping issues, and is consistent with others entries
(ioremap, vmalloc, ...) that already provide caller.

Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Matthieu CASTET <matthieu.castet@parrot.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>

parent 396a5d4a

arch/arm64/mm/dma-mapping.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -166,7 +166,7 @@ static void __dma_alloc(struct device dev, size_t size,
		/* create a coherent mapping */
		page = virt_to_page(ptr);
		coherent_ptr = dma_common_contiguous_remap(page, size, VM_USERMAP,
		prot, NULL);
		prot, __builtin_return_address(0));
		if (!coherent_ptr)
		goto no_map;

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