Bug 12665

Bug 12665

[John de la Garza]

I found a bug that appears to be simple to fix.  I assume I am missing
something.

here is a link to the bug description:
https://bugzilla.kernel.org/show_bug.cgi?id=12665

the man page for the function in the bug report mentions that linux does
not impliment the desired functionality


It seems like it is accepted as working the way it does, and at the same
time it is reported in bugzilla as a current bug.


What am I missing?

Bug 12665

[Peter Teoh]

reading the specs:

http://pubs.opengroup.org/onlinepubs/7908799/xsh/timer_gettime.html

the DELAYTIMER_MAX is for realtime POSIX.

but Linux is based on http://en.wikipedia.org/wiki/Linux_Standard_Base,
which is LSB.

There is no direct mapping between LSB and POSIX, but perhaps this:

http://man7.org/linux/man-pages/man7/time.7.html

and

http://pubs.opengroup.org/onlinepubs/7908799/xsh/timer_gettime.html

Look carefully between the two and you can perhaps find the balancing point
u will need for implementing this feature.

whether it is a kernel bug, or userspace bug is therefore highly
controversial.


On Tue, Dec 17, 2013 at 1:29 PM, John de la Garza <john@jjdev.com> wrote:

> I found a bug that appears to be simple to fix.  I assume I am missing
> something.
>
> here is a link to the bug description:
> https://bugzilla.kernel.org/show_bug.cgi?id=12665
>
> the man page for the function in the bug report mentions that linux does
> not impliment the desired functionality
>
>
> It seems like it is accepted as working the way it does, and at the same
> time it is reported in bugzilla as a current bug.
>
>
> What am I missing?
>
>
>
> _______________________________________________
> Kernelnewbies mailing list
> Kernelnewbies at kernelnewbies.org
> http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
>



-- 
Regards,
Peter Teoh
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Bug 12665

[johnd]

On Tue, Dec 24, 2013 at 02:19:30PM +0800, Peter Teoh wrote:
> the DELAYTIMER_MAX is for realtime POSIX.
> 
> but Linux is based on http://en.wikipedia.org/wiki/Linux_Standard_Base,
> which is LSB.
> 
> There is no direct mapping between LSB and POSIX, but perhaps this:
> 
> http://man7.org/linux/man-pages/man7/time.7.html
> 
> and
> 
> http://pubs.opengroup.org/onlinepubs/7908799/xsh/timer_gettime.html
> 
> Look carefully between the two and you can perhaps find the balancing point
> u will need for implementing this feature.

Thanks for the explanation.  I was just looking at bugs in bugzilla that
I could actually reproduce.  I'm just getting started with kernel
programming and am looking for bugs I can observe.

Bug 12665

[Peter Teoh]

this list (Linux-API) focus on adding new API to the linux platform.   So
perhaps this one about timing may get you started:

http://www.spinics.net/lists/linux-api/msg02243.html

or in general:

https://www.google.com.sg/search?q=site%3Awww.spinics.net%2Flists%2Flinux-api%2F+time


On Fri, Jan 3, 2014 at 2:43 AM, johnd <john@jjdev.com> wrote:

> On Tue, Dec 24, 2013 at 02:19:30PM +0800, Peter Teoh wrote:
> > the DELAYTIMER_MAX is for realtime POSIX.
> >
> > but Linux is based on http://en.wikipedia.org/wiki/Linux_Standard_Base,
> > which is LSB.
> >
> > There is no direct mapping between LSB and POSIX, but perhaps this:
> >
> > http://man7.org/linux/man-pages/man7/time.7.html
> >
> > and
> >
> > http://pubs.opengroup.org/onlinepubs/7908799/xsh/timer_gettime.html
> >
> > Look carefully between the two and you can perhaps find the balancing
> point
> > u will need for implementing this feature.
>
> Thanks for the explanation.  I was just looking at bugs in bugzilla that
> I could actually reproduce.  I'm just getting started with kernel
> programming and am looking for bugs I can observe.
>
>


-- 
Regards,
Peter Teoh
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