On Wed, 30 Jul 2003, Andrea Arcangeli wrote:
> I never did any 2.6 patch, so it maybe a different thing what you've
> seen, not what I applied to 2.4. Infact even the 2.4 patch isn't from
> me.
the 2.4 timer-scalability patches do have a problem: due to TIMER_BH the
actual timer expiry can happen on a different CPU, which opens up a
del_timer()/add_timer() race in the itimer code. Your patch closes that
hole.
But on 2.6 the timer will run precisely on the CPU it was added, so i
think the race is not possible.
Ingo
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This archive was generated by hypermail 2b29 : Thu Jul 31 2003 - 22:00:44 EST