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Message-ID: <20150417180438.GE16743@htj.duckdns.org> Date: Fri, 17 Apr 2015 14:04:38 -0400 From: Tejun Heo <tj@...nel.org> To: David Miller <davem@...emloft.net> Cc: penguin-kernel@...ove.SAKURA.ne.jp, akpm@...ux-foundation.org, linux-kernel@...r.kernel.org, netdev@...r.kernel.org Subject: Re: [PATCHSET] printk, netconsole: implement reliable netconsole Just a bit of addition. On Fri, Apr 17, 2015 at 01:37:54PM -0400, Tejun Heo wrote: > Upto patch 12, it's just the same mechanism transferring extended > messages. It doesn't add any smartness to netconsole per-se except > that it can now emit messages with metadata headers. What do you > think about them? So, as long as netconsole can send messages with metadata header, moving the reliability part to userland is trivial. All that's necessary is a program which follows /dev/kmsg, keeps the unacked sequences and implement the same retransmission mechanism. It'd be less reobust in certain failure scenarios and a bit more cumbersome to set up but nothing major and if we do that there'd be no reason to keep the userland part in the kernel tree. If the retransmission and timer parts are bothering, moving those to userland sounds like an acceptable compromise. Thanks. -- tejun -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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