Re: [ANNOUNCE] udev 046 release

[Greg KH <greg@kroah.com>]

On Sat, Nov 20, 2004 at 07:40:58PM +0100, Alex Riesen wrote:
> On Fri, 19 Nov 2004 14:58:44 -0800, Greg KH <greg@kroah.com> wrote:
> > > > > I've released the 046 version of udev.  It can be found at:
> > > > >         kernel.org/pub/linux/utils/kernel/hotplug/udev-046.tar.gz
> > > > I just put const's at some places. It cut down data segments, but
> > > > increased code size.
> > > > Overall still smaller:
> > 
> > What version of gcc are you using that causes this to happen?  And why
> > does it happen?  Why does the compiler think it can pack these
> > structures better if they are const *?
> 
> I have 3.3.4, but I'm almost sure it shall happen with any compiler: no compiler
> has given the knowledge that the structures will be never changed in any way.
> So it can use the same storage for the equal string constants, for example.
> With the knowledge it must assume you will change contents of the constants
> sometime, and have to allocate the space for them separately. IOW, they are
> not constants, just initializers. But, in fact, they are, hence the
> suggestion to help
> the compiler by declaring them const

Ok, Kay has commited your changes to the udev tree, thanks.

greg k-h


-------------------------------------------------------
SF email is sponsored by - The IT Product Guide
Read honest & candid reviews on hundreds of IT Products from real users.
Discover which products truly live up to the hype. Start reading now. 
http://productguide.itmanagersjournal.com/
_______________________________________________
Linux-hotplug-devel mailing list  http://linux-hotplug.sourceforge.net
Linux-hotplug-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/linux-hotplug-devel