ftp://infradead.org/pub/people/dwh/preempt-252p10.diff.bz2
It replaces most C-source read accesses to it with need_preempt() which
returns true if rescheduling is necessary.
It also replaces instances of:
if (current->need_resched())
schedule();
With:
preempt();
It doesn't (or at least shouldn't) do anything else.
Cheers,
David
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