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We ran into problems with all the /etc/hotplug.d/ scripts that sleep for
the sysfs files or for other reasons. Anyway, it takes much too much time
before udev is executed.
HAL has its own notifier in /etc/hotplug.d/ and also waits for the
dev.d/events with the same SEQNUM. Sometimes it take 25 seconds between
these two events, cause the other scripts are sleeping too much :)
Attached is a patch that installs the udevsend symlink as
10-udev.hotplug instead of udev.hotplug, to be executed earlier.
[kay@pim udev.kay]$ tree /etc/hotplug.d/
/etc/hotplug.d/
`-- default
|-- 10-udev.hotplug -> /sbin/udevsend
|-- 20-hal.hotplug -> /usr/libexec/hal.hotplug
`-- default.hotplug
Hi,
The following patch makes udev/udevstart be a common binary. First,
doing this grows udev by a total of 1.8kB (ppc32, stripped) whereas
udevstart by itself is 6.4kB. I know you mentioned being able to
replace udevstart with a script, but at 1.8kB I don't think it'll be
easy to beat this with size there. Next, the following are by-eye
timings of before, after, and with devfs on a slow, but still usable
embedded platform (config stripped down to more-or-less bare for
ramdisk):
-- Embedded Planet RPX LITE, 64Mhz MPC 823e --
devfs : 15.333s, 15.253s, 14.988s (15.191s avg)
udev-pristine : 18.675s, 18.079s, 18.418s (18.390s avg)
udev-multi : 14.587s, 14.747s, 14.868s (14.734s avg)
The patch ends up being rather large to add this, as in doing so I ended
up making all refs (that I hit..) to devpath/subsystem be marked as
'const'.
Signed-off-by: Tom Rini <trini@kernel.crashing.org>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
The following patch adds 'asmlinkage' defines to udev, to kill off 2
warnings on !i386.
Signed-off-by: Tom Rini <trini@kernel.crashing.org>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Here we catch up, after the default config changes.
o the man page is updated to reflect the new default config
o /etc/udev/rules.d/ + permissions.d/ dirs are created now
o udev.rules is installed in /etc/udev/rules.d/50-udev.rules
so the user can easily order the files by prepending a number.
(RedHat has the same name in the last rpm.)
o defined directory names in the Makefile are all without slashes now,
not the first half with and the remaining without.
o all binaries are uninstalled now
o leading slashes in config values are now removed or prepended while the
config is parsed, so we are more robust if the usere changes something.
o replaced the macros from udev_config.c with real code, cause we can
skip if the value matches and not useless iterate over the remaining
fields.
o config parsing errors are logged with info() now, fixes the bug where
we report a error with debug_parse(), even when there isn't one
here is a patch on top of your nice improvements.
I fixed the whitespace and it hopefully fixes the stupid timestamp bug in
udevd. Some stupid OS sets the hwclock to localtime and linux changes it
to UTC while starting. If any events are pending they may be delayed by
the users time distance from UTC :) So we use the uptime seconds now.
On Mon, Mar 15, 2004 at 09:28:17PM +0100, Kay Sievers wrote:
> Here is a first simple and pretty stupid try to make a simple tool for
> composing of a udev rule.
>
> It reads the udevdb to get all currently handled devices and presents a
> list, where you can choose the device to compose the rule for.
>
> The composed rule is just printed out in a window, nothing else by now.
>
> Do we want something like this?
> Nevermind, I always wanted to know, how this newt thing works :)
Here is the next step, I still can't sleep and there are to many patches
pending to make something useful :)
Cause nobody wanted to play with me, I've made a screenshot.
The device list is sorted in alphabetical order now and if there are only
a few recently discovered devices, they are placed on top of the list.
For those who want to have a look:
http://vrfy.org/projects/udev/udevruler.png
The patch applies on top of today's mmap() patch. The db format is
changed to have the file and line number of the applied rule. So it
should be easy to edit the matching rule with this beast. It compiles
with "make all udevruler".
Here we replace the various fgets() with a mmap() call for the config
file reading, due to the reported performance problems with klibc.
Thanks to Patrick's testing, it makes a very small, close to nothing
speed gain for libc users, but a 6 times speed increase for klibc users
with a 1000 line config file.
I've created a udev_lib.[hc] for this and also moved all the generic
stuff from udev.h in there and uninlined the functions.
Here are the missing pieces for udevtest. A simple man page is added,
the blacklist is removed, cause it can't work without having a subsystem.
The Makefile removes all manpages now with a uninstall and installs
udevtest in /usr/bin/.
Any old version from /sbin/ should be deleted by hand.
The only expected argument is the sysfs devpath, here I changed it to be
more tolerant to the input. The path may now be specified with or
without a leading slash and optionally with the /sys moutpoint prepended.
I hope this will end the confusion about the use of this program :)
Here we rename the former tiny $(HELPER) to $(INFO)
cause it's no longer only a helper :)
And install it in /usr/bin instead of /sbin cause any user
may want to call it and we don't need it on startup.
On Mon, 2004-03-01 at 20:08, Robert Love wrote:
> Ack, I did not even see that! Thanks.
>
> Let's rip that out, and always use the new built-in logic to determine
> what initscript to install.
Hm, looks like we do not need the %{lsb} and USE_LSB logic at all,
anymore.
Here is the patch, updated, removing both completely.
