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Re: [Xen-devel] [PATCH net] xen-netback: correctly schedule rate-limited queues
- To: David Miller <davem@xxxxxxxxxxxxx>
- From: Jean-Louis Dupond <jean-louis@xxxxxxxxx>
- Date: Thu, 27 Jul 2017 10:21:56 +0200
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- Cc: netdev@xxxxxxxxxxxxxxx, Paul.Durrant@xxxxxxxxxx, wei.liu2@xxxxxxxxxx, xen-devel@xxxxxxxxxxxxxxxxxxxx
- Delivery-date: Thu, 27 Jul 2017 08:22:01 +0000
- List-id: Xen developer discussion <xen-devel.lists.xen.org>
Op 2017-06-22 17:16, schreef David Miller:
From: Wei Liu <wei.liu2@xxxxxxxxxx>
Date: Wed, 21 Jun 2017 10:21:22 +0100
Add a flag to indicate if a queue is rate-limited. Test the flag in
NAPI poll handler and avoid rescheduling the queue if true, otherwise
we risk locking up the host. The rescheduling will be done in the
timer callback function.
Reported-by: Jean-Louis Dupond <jean-louis@xxxxxxxxx>
Signed-off-by: Wei Liu <wei.liu2@xxxxxxxxxx>
Tested-by: Jean-Louis Dupond <jean-louis@xxxxxxxxx>
Applied.
Could this get applied to stable & LTS kernels also?
Seems important enough in my opinion.
Thanks!
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