Messages in this thread | | | Subject | Re: [Patch V3 0/3] Enable irqs when waiting for rwlocks | From | Petr Tesarik <> | Date | Wed, 03 Dec 2008 13:36:38 +0100 |
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Peter Zijlstra píše v St 03. 12. 2008 v 13:25 +0100: > On Wed, 2008-12-03 at 05:37 -0600, Robin Holt wrote: > > > It's a bit regrettable to have different architectures behaving in > > > different ways. It would be interesting to toss an x86_64 > > > implementation into the grinder, see if it causes any problems, see if > > > it produces any tangible benefits. Then other architectures might > > > follow. Or not, depending on the results ;) > > > > I personally expect SGI to work on this for x86_64 in the future. > > Once we actually start testing systems with 128 and above cpus, I > > would expect to see these performance issues needing to be addressed. > > Until then, it is just a theoretical. > > Personally I consider this a ugly hack and would love to see people > solve the actual problem and move away from rwlock_t, its utter rubbish.
Me too, but we don't have that clean and nice solution today, but what we _do_ have today are the machines which break badly when interrupts are disabled for the whole duration of taking a rwlock_t. :(
Feel free to rewrite all users of rwlock_t. I'll appreciate it, oh so very much.
Petr
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