Architecture specific implementations for tickless kernel

Architecture specific implementations for tickless kernel

[Vikram Narayanan]

Hi,
I am developing a BSP for a ARM Cortex-M3 (no MMU) based board. In order to
have tickless kernel and deferrable timers, what are the architecture
specific implementations. Is the clocksource and clockevent data structures
enough? How to hook those timers to the tickless implementation of the
kernel/timer.c. Can some one point out any examples that already have this
feature enabled and also in the kernel tree.

And also, are clocksoure and clockevents dependent on each other? I see in
some platforms, that they have used 2 different timers for the above. If it
can be used so, which ties up the clocksource and clockevent?

Thanks in advance
neo
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Architecture specific implementations for tickless kernel

[Vikram Narayanan]

Yes. My question is pointed towards uClinux. I am sorry. I forgot to mention
that in the first post
/neo

On Tue, Apr 19, 2011 at 11:47 PM, Chaitannya Mahatme
<chaitannya@gmail.com>wrote:

>  On Tuesday 19 April 2011 10:53 PM, Vikram Narayanan wrote:
>
> Hi,
> I am developing a BSP for a ARM Cortex-M3 (no MMU) based board. In order to
> have tickless kernel and deferrable timers, what are the architecture
> specific implementations. Is the clocksource and clockevent data structures
> enough? How to hook those timers to the tickless implementation of the
> kernel/timer.c. Can some one point out any examples that already have this
> feature enabled and also in the kernel tree.
>
> And also, are clocksoure and clockevents dependent on each other? I see in
> some platforms, that they have used 2 different timers for the above. If it
> can be used so, which ties up the clocksource and clockevent?
>
> Thanks in advance
> neo
>
>
> _______________________________________________
> Kernelnewbies mailing listKernelnewbies at kernelnewbies.orghttp://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
>
>  Since you have mentioned that there is no MMU, you cannot port Linux
> kernel onto it. You would be mostly be looking forward to uclinux or bare
> metal programming.
> Is your question specific to uclinux ?
>
> --
> Cheers !!!
> Chaitannya
>
> follow me on twitter http://twitter.com/chaitannya
>
> I believe there's a hero in all of us
> who keeps us honest, gives us strength, makes us noble, and finally allows
> us to die with pride,
> even though sometimes we have to be steady, and give up the thing we want
> the most... even our dreams.
> - Spider Man 2
>
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