Messages in this thread | | | Date | Sun, 15 Aug 2004 13:56:49 +0200 | From | Ingo Molnar <> | Subject | [patch] voluntary-preempt-2.6.8.1-P0 |
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i've uploaded the -P0 patch:
http://redhat.com/~mingo/voluntary-preempt/voluntary-preempt-2.6.8.1-P0
those who had APIC (and USB, under SMP) problems under previous versions, are the problems still present in -P0?
Changes:
- make redirected softirqs and hardirqs preemptible by default. I reviewed a number of softirq users and it appears to be safe. Process-level enable/disable_bh still disables preemption, but the handlers themselves run in a preemptible way. This preemptability should fix e.g. the IDE latencies. It could also fix some of the /dev/random related latencies.
- fixed a bug in hardirq redirection - we didnt re-disable interrupts
- updated the IO-APIC changes - hopefully it's more robust now
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