netdev - Re: [PATCH 0/2][v5] Add the ability to do BPF directed error injection

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Message-ID: <20171110092046.2mfewtmt6gjzzjs7@hirez.programming.kicks-ass.net>
Date:   Fri, 10 Nov 2017 10:20:46 +0100
From:   Peter Zijlstra <peterz@...radead.org>
To:     Alexei Starovoitov <ast@...com>
Cc:     Josef Bacik <josef@...icpanda.com>, rostedt@...dmis.org,
        mingo@...hat.com, davem@...emloft.net, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, ast@...nel.org, kernel-team@...com,
        daniel@...earbox.net
Subject: Re: [PATCH 0/2][v5] Add the ability to do BPF directed error
 injection

On Wed, Nov 08, 2017 at 06:43:25AM +0900, Alexei Starovoitov wrote:
> On 11/8/17 5:28 AM, Josef Bacik wrote:
> > I'm sending this through Dave since it'll conflict with other BPF changes in his
> > tree, but since it touches tracing as well Dave would like a review from
> > somebody on the tracing side.
> > 
> > v4->v5:
> > - disallow kprobe_override programs from being put in the prog map array so we
> >   don't tail call into something we didn't check.  This allows us to make the
> >   normal path still fast without a bunch of percpu operations.
> 
> looks great to me.
> Peter,
> could you please review x86 bits?

I did not in fact get the patch... But after digging it out of LKML I
don't immediately see something broken, but this is not stuff I
typically know well.