On Thu, 4 Jan 2001, Daniel Phillips wrote:
> A more ambitious way to proceed is to change spinlocks so they can sleep
> (not in interrupts of course). There would not be any extra overhead
> for this on spin_lock (because the sleep test is handled off the fast
> path) but spin_unlock gets a little slower - it has to test and jump on
> a flag if there are sleepers.
I already have a preemption patch that also changes the longest
held spinlocks into sleep locks, i.e. the locks that are routinely
held for > 1ms. This gives a kernel with very good interactive
response, good enough for most audio apps.
Nigel Gamble nigel@nrg.org
Mountain View, CA, USA. http://www.nrg.org/
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This archive was generated by hypermail 2b29 : Sun Jan 07 2001 - 21:00:19 EST