[PATCH 20/62] Driver-Core: disable /sbin/hotplug by default

From: Greg Kroah-Hartman
Date: Tue Mar 02 2010 - 18:56:30 EST

From: Kay Sievers <kay.sievers@xxxxxxxx>

No recent mainstream system uses the /sbin/hotplug fork-bomb any more.
Disable it by default to reflect how it is used these days.

Signed-off-by: Kay Sievers <kay.sievers@xxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxx>
drivers/base/Kconfig | 10 +++++++++-
1 files changed, 9 insertions(+), 1 deletions(-)

diff --git a/drivers/base/Kconfig b/drivers/base/Kconfig
index 8497ce9..338f0bf 100644
--- a/drivers/base/Kconfig
+++ b/drivers/base/Kconfig
@@ -3,10 +3,18 @@ menu "Generic Driver Options"
string "path to uevent helper"
depends on HOTPLUG
- default "/sbin/hotplug"
+ default ""
Path to uevent helper program forked by the kernel for
every uevent.
+ Before the switch to the netlink-based uevent source, this was
+ used to hook hotplug scripts into kernel device events. It
+ usually pointed to a shell script at /sbin/hotplug.
+ This should not be used today, because usual systems create
+ many events at bootup or device discovery in a very short time
+ frame. One forked process per event can create so many processes
+ that it creates a high system load, or on smaller systems
+ it is known to create out-of-memory situations during bootup.

bool "Maintain a devtmpfs filesystem to mount at /dev"

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