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dma mapping : export caller to vmallocinfo

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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>
This commit is contained in:
Matthieu CASTET 2017-10-02 15:01:55 +02:00 committed by Will Deacon
parent 396a5d4a5c
commit 359be67862
1 changed files with 1 additions and 1 deletions
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2
arch/arm64/mm/dma-mapping.c
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@ -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;