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Driver core: add CONFIG_UEVENT_HELPER_PATH

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The kernel creates a process for every event that is send, even when
there is no binary it could execute.  We are needlessly creating around
200-300 failing processes during early bootup, until we have the chance
to disable it from userspace.

This change allows us to disable /sbin/hotplug entirely, if you want to,
by setting UEVENT_HELPER_PATH="" in the kernel config.

Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Kay Sievers 2007-08-15 15:38:28 +02:00 committed by Greg Kroah-Hartman
parent 7eff2e7a8b
commit 6a8d8abb6e
2 changed files with 9 additions and 1 deletions
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8
drivers/base/Kconfig
View file

@ -1,5 +1,13 @@
menu "Generic Driver Options"
config UEVENT_HELPER_PATH
string "path to uevent helper"
depends on HOTPLUG
default "/sbin/hotplug"
help
Path to uevent helper program forked by the kernel for
every uevent.
config STANDALONE
bool "Select only drivers that don't need compile-time external firmware" if EXPERIMENTAL
default y

2
lib/kobject_uevent.c
View file

@ -35,7 +35,7 @@ const char *kobject_actions[] = {
#if defined(CONFIG_HOTPLUG)
u64 uevent_seqnum;
char uevent_helper[UEVENT_HELPER_PATH_LEN] = "/sbin/hotplug";
char uevent_helper[UEVENT_HELPER_PATH_LEN] = CONFIG_UEVENT_HELPER_PATH;
static DEFINE_SPINLOCK(sequence_lock);
#if defined(CONFIG_NET)
static struct sock *uevent_sock;