On Thu, 10 Aug 2017 00:29:19 +0200
Francois Romieu wrote:
> Murali Karicheri :
> [...]
> > The internal memory or FIFO can store only up to 3 MTU sized packets. So
> > that has to
> > be processed before PRU gets another packets to send to CPU. So per above,
> > it is not ideal to run NAPI for
Murali Karicheri :
[...]
> The internal memory or FIFO can store only up to 3 MTU sized packets. So that
> has to
> be processed before PRU gets another packets to send to CPU. So per above,
> it is not ideal to run NAPI for this scenario, right? Also for NetCP we use
> about 128 descriptors wit
Hi David,
On 08/08/2017 07:00 PM, David Miller wrote:
> From: Murali Karicheri
> Date: Tue, 8 Aug 2017 18:17:52 -0400
>
>> Is there an skb_alloc function that can be used from interrupt handler?
>> Looks like netdev_alloc_skb()
>> can't be used since I see following trace with kernel hack debug
On 08/08/2017 06:29 PM, Matteo Croce wrote:
> netdev_alloc_skb() passes GFP_ATOMIC to alloc_skb() so it should work
> in an interrupt handler too.
I will provide more background on my work as response to your next
response. This is running RT Linux kernel. I have CONFIG_IRQ_FORCED_THREADING
enabl
From: Murali Karicheri
Date: Tue, 8 Aug 2017 18:17:52 -0400
> Is there an skb_alloc function that can be used from interrupt handler? Looks
> like netdev_alloc_skb()
> can't be used since I see following trace with kernel hack debug options
> enabled.
>
> [ 652.481713] [] (unwind_backtrace) f
Il giorno mar, 08/08/2017 alle 18.17 -0400, Murali Karicheri ha
scritto:
> Is there an skb_alloc function that can be used from interrupt
> handler? Looks like netdev_alloc_skb()
> can't be used since I see following trace with kernel hack debug
> options enabled.
>
> [ 652.481713] [] (unwind_bac
Is there an skb_alloc function that can be used from interrupt handler? Looks
like netdev_alloc_skb()
can't be used since I see following trace with kernel hack debug options
enabled.
[ 652.481713] [] (unwind_backtrace) from []
(show_stack+0x10/0x14)
[ 652.481725] [] (show_stack) from []
(du
