lkml.org 
[lkml]   [2018]   [May]   [22]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [PATCH net-next v2] net: sched: don't disable bh when accessing action idr
From
Date
On 21/05/18 04:03 PM, Vlad Buslov wrote:
> Initial net_device implementation used ingress_lock spinlock to synchronize
> ingress path of device. This lock was used in both process and bh context.
> In some code paths action map lock was obtained while holding ingress_lock.
> Commit e1e992e52faa ("[NET_SCHED] protect action config/dump from irqs")
> modified actions to always disable bh, while using action map lock, in
> order to prevent deadlock on ingress_lock in softirq. This lock was removed
> from net_device, so disabling bh, while accessing action map, is no longer
> necessary.
>
> Replace all action idr spinlock usage with regular calls that do not
> disable bh.
>
> Signed-off-by: Vlad Buslov <vladbu@mellanox.com>

Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>

cheers,
jamal

\
 
 \ /
  Last update: 2018-05-22 14:51    [W:0.080 / U:3.016 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site