lkml.org 
[lkml]   [2013]   [Mar]   [5]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [RFC PATCH 3/5] ixgbe: Add support for ndo_ll_poll
From
Date
On Wed, 2013-02-27 at 09:56 -0800, Eliezer Tamir wrote:
> Add the ixgbe driver code implementing ndo_ll_poll.
> It should be easy for other drivers to do something similar
> in order to enable support for CONFIG_INET_LL_RX_POLL

Yes... in fact I wonder whether the lock and state couldn't be added to
napi_struct instead of being driver-specific.

[...]
> --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
> +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
[...]
> static void ixgbe_napi_disable_all(struct ixgbe_adapter *adapter)
> {
> int q_idx;
>
> - for (q_idx = 0; q_idx < adapter->num_q_vectors; q_idx++)
> + local_bh_disable(); /* for ixgbe_qv_lock_napi() */
> + for (q_idx = 0; q_idx < adapter->num_q_vectors; q_idx++) {
> napi_disable(&adapter->q_vector[q_idx]->napi);
> + while (!ixgbe_qv_lock_napi(adapter->q_vector[q_idx])) {
> + pr_info("QV %d locked\n", q_idx);
> + msleep(1);
> + }
> + }
> + local_bh_enable();
> }

Sleeping with preemption disabled?

Ben.

--
Ben Hutchings, Staff Engineer, Solarflare
Not speaking for my employer; that's the marketing department's job.
They asked us to note that Solarflare product names are trademarked.



\
 
 \ /
  Last update: 2013-03-05 19:01    [W:0.213 / U:0.148 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site