[v2] mdev: create devices from /sys/dev (kill pre-2.6.26 support, fix mdev for everyone else)

[Linus Walleij]

On Thu, Apr 21, 2016 at 6:02 AM, Isaac Dunham <ibid.ag at gmail.com> wrote:

> Alpine Linux/x86, musl, gcc 5.3.0, roughly defconfig:
>
> function                                             old     new   delta
> strncat                                                -      56     +56
> mdev_main                                           1500    1450     -50
> dirAction                                            150      14    -136
> ------------------------------------------------------------------------------
> (add/remove: 2/0 grow/shrink: 0/2 up/down: 56/-186)          Total: -130 bytes
>    text    data     bss     dec     hex filename
>  896163    6751    6948  909862   de226 busybox_old
>  896263    6751    6948  909962   de28a busybox_unstripped

Thanks Isaac, so apart from making things work, we also save
memory with doing things this way.

Yours,
Linus Walleij