* [PATCH] [DEV] dma mapping : export caller to vmallocinfo
@ 2017-10-02 13:01 Matthieu CASTET
2017-10-02 14:03 ` Catalin Marinas
0 siblings, 1 reply; 2+ messages in thread
From: Matthieu CASTET @ 2017-10-02 13:01 UTC (permalink / raw)
To: linux-kernel, linux-arm-kernel; +Cc: Catalin Marinas, Matthieu CASTET
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.
Signed-off-by: Matthieu CASTET <matthieu.castet@parrot.com>
---
arch/arm64/mm/dma-mapping.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm64/mm/dma-mapping.c b/arch/arm64/mm/dma-mapping.c
index 614af886b7ef..115b32639a3c 100644
--- a/arch/arm64/mm/dma-mapping.c
+++ b/arch/arm64/mm/dma-mapping.c
@@ -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;
--
2.14.2
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [PATCH] [DEV] dma mapping : export caller to vmallocinfo
2017-10-02 13:01 [PATCH] [DEV] dma mapping : export caller to vmallocinfo Matthieu CASTET
@ 2017-10-02 14:03 ` Catalin Marinas
0 siblings, 0 replies; 2+ messages in thread
From: Catalin Marinas @ 2017-10-02 14:03 UTC (permalink / raw)
To: Matthieu CASTET; +Cc: linux-kernel, linux-arm-kernel, Will Deacon
On Mon, Oct 02, 2017 at 03:01:55PM +0200, Matthieu CASTET wrote:
> 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.
>
> Signed-off-by: Matthieu CASTET <matthieu.castet@parrot.com>
> ---
> arch/arm64/mm/dma-mapping.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
It looks fine to me. Will (cc'ed) should pick it up for 4.15.
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
^ permalink raw reply [flat|nested] 2+ messages in thread
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2017-10-02 13:01 [PATCH] [DEV] dma mapping : export caller to vmallocinfo Matthieu CASTET
2017-10-02 14:03 ` Catalin Marinas
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