Re: [PATCH] mtd: ubi: avoid expensive do_div() on 32-bit machines

[Zhihao Cheng]

在 2024/3/13 21:39, Arnd Bergmann 写道:

> > Thanks for explaination, which means that do_div is used for 64-bit
> > division to solve the link failure caused by missed libgcc. Since
> > parameter 'from' is u32, there is no need to invoke do_div on a 32-bit
> > platform, you just want to stop the wasting behavior on a 32-bit
> > platform. Do I understand right?
>
> Yes, correct.
>
>        Arnd
> .
How do you find it? I mean there are so many types and many do_div 
callers, do you have a static check tool?