On Wed, 15 Jul 2020 18:35:00 -0400 Willem de Bruijn wrote:
> On Wed, Jul 15, 2020 at 4:21 PM Jakub Kicinski wrote:
> >
> > On Tue, 7 Jul 2020 17:28:04 +0206 John Ogness wrote:
> > > A busy-wait loop is used to implement waiting for bits to be copied
> > > from the skb to the kernel buffer befor
On Wed, Jul 15, 2020 at 4:21 PM Jakub Kicinski wrote:
>
> On Tue, 7 Jul 2020 17:28:04 +0206 John Ogness wrote:
> > A busy-wait loop is used to implement waiting for bits to be copied
> > from the skb to the kernel buffer before retiring a block. This is
> > a problem on PREEMPT_RT because the cop
On Tue, 7 Jul 2020 17:28:04 +0206 John Ogness wrote:
> A busy-wait loop is used to implement waiting for bits to be copied
> from the skb to the kernel buffer before retiring a block. This is
> a problem on PREEMPT_RT because the copying task could be preempted
> by the busy-waiting task and thus
A busy-wait loop is used to implement waiting for bits to be copied
from the skb to the kernel buffer before retiring a block. This is
a problem on PREEMPT_RT because the copying task could be preempted
by the busy-waiting task and thus live lock in the busy-wait loop.
Replace the busy-wait logic
