lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  PHC 
Open Source and information security mailing list archives
 
Hash Suite for Android: free password hash cracker in your pocket
[<prev] [next>] [<thread-prev] [day] [month] [year] [list]
Date:   Thu, 06 Dec 2018 12:16:25 -0800 (PST)
From:   David Miller <davem@...emloft.net>
To:     lirongqing@...du.com
Cc:     netdev@...r.kernel.org
Subject: Re: [PATCH][net-next] tun: align write-heavy flow entry members to
 a cache line

From: Li RongQing <lirongqing@...du.com>
Date: Thu,  6 Dec 2018 16:08:17 +0800

> tun flow entry 'updated' fields are written when receive
> every packet. Thus if a flow is receiving packets from a
> particular flow entry, it'll cause false-sharing with
> all the other who has looked it up, so move it in its own
> cache line
> 
> and update 'queue_index' and 'update' field only when
> they are changed to reduce the cache false-sharing.
> 
> Signed-off-by: Zhang Yu <zhangyu31@...du.com>
> Signed-off-by: Wang Li <wangli39@...du.com>
> Signed-off-by: Li RongQing <lirongqing@...du.com>

Applied.

Powered by blists - more mailing lists