linux-kernel - Re: [PATCH] [DEV] dma mapping : export caller to vmallocinfo

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Message-ID: <20171002140335.535sgt4x7phlyowo@armageddon.cambridge.arm.com>
Date:   Mon, 2 Oct 2017 15:03:35 +0100
From:   Catalin Marinas <catalin.marinas@....com>
To:     Matthieu CASTET <matthieu.castet@...rot.com>
Cc:     linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        Will Deacon <will.deacon@....com>
Subject: Re: [PATCH] [DEV] dma mapping : export caller to vmallocinfo

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@...rot.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@....com>