linux-kernel - Re: [PATCH 2/2] powerpc: Add support for function error injection

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Date:   Wed, 06 Jun 2018 16:08:04 +0530
From:   "Naveen N. Rao" <naveen.n.rao@...ux.vnet.ibm.com>
To:     Josef Bacik <jbacik@...com>,
        Masami Hiramatsu <mhiramat@...nel.org>,
        Ingo Molnar <mingo@...nel.org>,
        Michael Ellerman <mpe@...erman.id.au>
Cc:     linux-kernel@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org
Subject: Re: [PATCH 2/2] powerpc: Add support for function error injection

Naveen N. Rao wrote:
> Michael Ellerman wrote:
>> 
>> I guess if it doesn't already apply to tip you should rebase it. You've
>> probably missed 4.18 anyway.
> 
> Oh ok. I just tried and it seems to apply just fine. I'll post v2 after 
> giving this a quick test.

I didn't post a v2 since I have decided against using this approach. The 
reason for that is Masami's series to remove jprobes. The discussion 
there reminded me that we can't easily override functions with kprobes 
on powerpc. Though it works for this particular scenario, we would just 
be setting a bad example.

As such, I won't be changing generic code, but will simply make the 
necessary changes in powerpc code.

Sorry for the noise.

- Naveen