Andrew Morton wrote:
On Mon, 29 May 2006 23:23:13 +0200
Ingo Molnar <[email protected]> wrote:
nv_do_nic_poll() is called from timer softirqs, which has interrupts
enabled, but np->lock might also be taken by some other interrupt
context.
But the driver does disable_irq(), so I'd say this was a false-positive.
And afaict this is not a timer handler - it's a poll_controller handler
(although maybe that get called from timer handler somewhere?)
It's both a timer handler and a poll_controller handler:
- if the interrupt handler causes a system overload (gig e without irq
mitigation...), then the nic disables the irq on the device and waits
one tick and handles the interrupts from a timer. This is nv_do_nic_poll().
- nv_do_nic_poll is also called from the poll_controller handler.
I'll try to remove the disable_irq() calls from the poll_controller
handler, but probably not before the week-end.
--
Manfred
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