[ntp:hackers] Re: More questions on the ATOM driver.

David L. Mills mills at udel.edu
Wed Mar 8 15:01:16 UTC 2006


It is in fact amusing that the PPS feature has not "made it" in the 
Linux kernel while it has done that with just about all other OS on the 
planet. I consider that a feature and corresponds to my low opinion of 
that operating system. After all, the code has been around since 1992.


Reg Clemens wrote:

>> Reg,
>> I think your mission to stand down the kernel PPS is probably moot. Do
>> you expect HP, Sun, Cisco and FreeBSD to remove the support now that
>> it's been in their products for over a decade?
> No, but then this PPS code has never made it into the Linux kernel.
> Ulrich had a patch for the 2.4.x series of kernels that included both the
> PPS capture code and the PPS kernel code, but it was never submitted to
> become part of the official kernel tree.
> Since then Ulrich has had a much smaller patch for the 2.6.x kernel tree
> that just has the PPS capture code in it, and not the 'enable kernel' 
> stuff.
> As noted on this list a month or so ago, Rodolfo Giometti has a similar
> patch, using more modern methods to communicate from the user to the 
> kernel.
> So for Linux, and what we consider modern, fast, machines, it would seem
> to me, that this new patch could be enough. Thats where Im really heading.
> There's no question of removing it where it currently exists, just the
> question of NOT writing and installing it if it doesnt exist.

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