21 Jul
2004
21 Jul
'04
9:07 p.m.
Scott Wood wrote:
On Wed, Jul 21, 2004 at 09:32:46PM +1000, Nick Piggin
wrote:
do_softirq is only run a maximum of once with preemption disabled,
instead of an unbounded number of times.
What do you think about deferring softirqs just
while in critical
sections?
I'm not sure how well this works, and it is CONFIG_PREEMPT only
but in theory it should prevent unbounded softirqs while under
locks without taking the performance hit of doing the context
switch.
You're still running do_softirq() with preemption disabled, which is
almost as bad as doing it under a lock.