Re: [PATCH RT] make hrtimer_nanosleep return immediately if time has passed

[George Anzinger <george@mvista.com>]

Steven Rostedt wrote:
> On Mon, 9 Jan 2006, George Anzinger wrote:
> 
>>Steven Rostedt wrote:
>>
>>Uh... I have been wondering about the "mode" thing, thinking "flags" might be
>>better.  And allowing, say, a "return if elapsed" flag as well as the ABS
>>flag.  Then all you would need to do is to add the "return if elapsed" flag
>>to the nanosleep calls.  I have other reasons for wanting to expand the
>>"mode" to more that two states... but, even with out that, I think the result
>>would be a) less code, and b) easier to follow and understand.  I just have
>>trouble pushing a word on the stack to make a call and then use only one bit
>>of it when it could be combined...
> 
> 
> And I perfectly agree with you :)
> 
> The problem is that the hrtimes is not my code, and I don't like doing
> too many changes in code that I don't understand the consequences of. As
> you showed me earlier, that the previous change broke the posix_timers.
> So I really only did the bare minimum to fix what I considered a bug, and
> let Thomas, John, Ingo or yourself do a proper fix.  Someone that
> understands the timers better than I do.
> 
> Currently, it seems those people are too busy, and I just wanted a quick
> fix.  I personally didn't like the patch, but my nose is stuck more into
> the scheduling, memory and Ingo's rt_mutex now to spend time understanding
> all the timer code. ;)
> 
I am working on a general clean up of this area.  I will roll you idea into 
it and see what they say.
> 


-- 
George Anzinger   george@mvista.com
HRT (High-res-timers):  http://sourceforge.net/projects/high-res-timers/