Re: mutexs for synchronization between kernel threads?

Patrick MOUROT (pm@sxb.bsf.alcatel.fr)
Thu, 22 Apr 1999 10:22:58 +0200


Andi Kleen wrote:

> Johannes Erdfelt <jerdfelt@sventech.com> writes:
> >
> > I guess what I want are spinlocks, but the kernel spinlock
> > implementation seems to be created for protecting across multiple CPU's,
> > not across multiple context's of execution (thread's)
>
> If you don't sleep in the critical region you don't need any locks
> at all on UP (except against the interrupt). Linux uses cooperative
> multitasking in the kernel.
>
> -Andi
> --
> This is like TV. I don't like TV.
>
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Hello,

Sorry for disturbing....but i have a hot (at least for us) question :
Do you encounter any Priority Inversion or deadlock with Mutexes or
Semaphores (regarding to spinlock) ??

TIA,

Patrick

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