Re: [PATCH] block: iolatency: avoid 64-bit division

From: Jens Axboe
Date: Tue Jul 10 2018 - 14:28:43 EST


On 7/10/18 9:21 AM, Arnd Bergmann wrote:
> On 32-bit architectures, dividing a 64-bit number needs to use the
> do_div() function or something like it to avoid a link failure:
>
> block/blk-iolatency.o: In function `iolatency_prfill_limit':
> blk-iolatency.c:(.text+0x8cc): undefined reference to `__aeabi_uldivmod'
>
> Using div_u64() gives us the best output and avoids the need for an
> explicit cast.

Applied, thanks Arnd.

--
Jens Axboe