netdev - Re: [RFC PATCH 2/2] netpoll: Don't poll for received packets

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 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <CAM_iQpVRkHR7_coMDUSLkVmhAgbO==b4BVPuKTMpKz+SRz=WjA@mail.gmail.com>
Date:	Wed, 12 Mar 2014 11:39:49 -0700
From:	Cong Wang <xiyou.wangcong@...il.com>
To:	"Eric W. Biederman" <ebiederm@...ssion.com>
Cc:	Eric Dumazet <eric.dumazet@...il.com>,
	David Miller <davem@...emloft.net>,
	Linux Kernel Network Developers <netdev@...r.kernel.org>,
	Matt Mackall <mpm@...enic.com>,
	Satyam Sharma <satyam.sharma@...il.com>
Subject: Re: [RFC PATCH 2/2] netpoll: Don't poll for received packets

On Tue, Mar 11, 2014 at 1:45 AM, Eric W. Biederman
<ebiederm@...ssion.com> wrote:
> -       work = napi->poll(napi, budget);
> -       trace_napi_poll(napi);
> +       /* Use a budget of 0 to request the drivers not process
> +        * their receive queue.  Warn when they do anyway.
> +        */
> +       work = napi->poll(napi, 0);
> +       WARN_ON_ONCE(work != 0);
>

Adding more printk's in netpoll call path would only bring more troubles.
--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html