Philippe Gerum wrote:
> Jan Kiszka wrote:
>> Hi,
>> next issue on my way towards fast native mutexes: as mutexes are now
>> mostly acquired in user space, the recursion counter lockcnt will only
>> be maintained in the context of the owning thread (at best: its process)
>> in user space. No update on the kernel-side lockcnt will take place
>> anymore, thus rt_mutex_inquire can only return 0 or 1, no > 1. Is it OK
>> to break the ABI here?
> I think so, we might lose some debug information, but that's the price for 
> much
> better performances. I can't imagine any sane code iterating lockcnt-times
> blindly to unlock a mutex it owns until it is free. Nah, of course not...
> Btw, I guess that the /proc information about mutexes would have to be 
> reworked
> as well.

Haven't looked into this yet (or haven't stumbled over any issue). What
conflict / lack of data do you have in mind here?


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