Messages in this thread | | | Date | Tue, 19 Feb 2008 16:21:51 +0200 | From | "Pekka Enberg" <> | Subject | Re: Linux 2.6.25-rc2 |
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Hi Mathieu,
On Feb 19, 2008 4:02 PM, Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca> wrote: > - stat(c, ALLOC_FASTPATH); seems to be using a var++, therefore > indicating it is not reentrant if IRQs are disabled. Since those are > only stats, I guess it's ok, but still weird.
What is not re-entrant?
On Feb 19, 2008 4:02 PM, Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca> wrote: > Since this shows mostly with network card drivers, I think the most > plausible cause would be an IRQ nesting over kmem_cache_alloc_node and > calling it.
Yes, this can happen. Are you saying it is not safe to be in the lockless path when an IRQ triggers?
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