Bug 8096 - mdev : CONFIG_HOTPLUG and /proc/sys/kernel/hotplug don't exist anymore ?
Summary: mdev : CONFIG_HOTPLUG and /proc/sys/kernel/hotplug don't exist anymore ?
Status: NEW
Alias: None
Product: Busybox
Classification: Unclassified
Component: Other (show other bugs)
Version: 1.21.x
Hardware: PC Linux
: P5 normal
Target Milestone: ---
Assignee: unassigned
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2015-05-08 04:37 UTC by linuxcbon
Modified: 2015-05-08 04:37 UTC (History)
1 user (show)

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Description linuxcbon 2015-05-08 04:37:01 UTC 
linux 3.19.2

/proc/sys/kernel/hotplug doesn't exist anymore ?

sh-4.2# echo /sbin/mdev > /proc/sys/kernel/hotplug
sh: /proc/sys/kernel/hotplug: No such file or directory

sh-4.2# sysctl -w kernel.hotplug=/sbin/mdev
error: "kernel.hotplug" is an unknown key

does it have to do with this ?

https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=40b313608ad4ea655addd2ec6cdd106477ae8e15
Finally eradicate CONFIG_HOTPLUG
Ever since commit 45f035ab9b8f ("CONFIG_HOTPLUG should be always on"),
 it has been basically impossible to build a kernel with
CONFIG_HOTPLUG turned off.
 Remove all the remaining references to it.