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SubjectRe: Bottom Handles/soft irqs/timer interrupts/SMP .....
Date
Hello!

> 1st Question: It is guaranteed that the timer interrupt will go to
> all CPUs _soon_???

After it will tick on each cpu. It is not very soon. 8)

Blocking in __kmem_cache_shrink to wait for this looks like a bug.


> 2nd Question: Is there a sane way to queue an operation to be done in
> each specific CPU?

smp_call_function().

If you cannot complete the operation on hard irq, you raise some softirq
to complete it.

Alexey
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