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Re: [PATCH 0/7] EDAC, mce_amd: Issue decoded MCE through the tracepoint

From Borislav Petkov <bp@alien8.de>
Newsgroups linux.kernel
Subject Re: [PATCH 0/7] EDAC, mce_amd: Issue decoded MCE through the tracepoint
Date 2017-09-04 12:50 +0200
Message-ID <ulX73-4pk-7@gated-at.bofh.it> (permalink)
References (1 earlier) <ujsAp-6ea-11@gated-at.bofh.it> <uk9Fo-7Lr-27@gated-at.bofh.it> <ukj22-5gs-17@gated-at.bofh.it> <ukkKu-6lK-9@gated-at.bofh.it> <ulMEF-6jN-5@gated-at.bofh.it>
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On Sun, Sep 03, 2017 at 04:37:04PM -0700, mark gross wrote:
> > It's the old, if a tree falls in the forest issue. If you break the ABI
> > but nobody is around to notice, did it really break?
> 
> perhaps, but what I was trying to point out was: "multi line debugFS printf's
> like this are very easy to change to append other information and you might
> want to worry about the ABI implications that could happen in the future."

Right, as I said to Mark earlier:

"Yeah, the moment something starts using it, it is ABI. The good thing
about it is, though, that it can get stuff appended to it, just like
tracepoints get fields added. And tools should be able to handle parsing
appended lines fine. Removing lines OTOH is always problematic. But
we'll make that append-only."

It is basically the same principle as with tracepoints where we can add
members easily.

-- 
Regards/Gruss,
    Boris.

Good mailing practices for 400: avoid top-posting and trim the reply.

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Thread

Re: [PATCH 0/7] EDAC, mce_amd: Issue decoded MCE through the  tracepoint Borislav Petkov <bp@alien8.de> - 2017-08-28 15:50 +0200
  Re: [PATCH 0/7] EDAC, mce_amd: Issue decoded MCE through the  tracepoint Borislav Petkov <bp@alien8.de> - 2017-08-30 13:50 +0200
    Re: [PATCH 0/7] EDAC, mce_amd: Issue decoded MCE through the  tracepoint mark gross <mgross@linux.intel.com> - 2017-08-30 23:50 +0200
      Re: [PATCH 0/7] EDAC, mce_amd: Issue decoded MCE through the  tracepoint Borislav Petkov <bp@alien8.de> - 2017-08-31 00:10 +0200
        Re: [PATCH 0/7] EDAC, mce_amd: Issue decoded MCE through the  tracepoint Borislav Petkov <bp@alien8.de> - 2017-08-31 21:20 +0200
      Re: [PATCH 0/7] EDAC, mce_amd: Issue decoded MCE through the  tracepoint Steven Rostedt <rostedt@goodmis.org> - 2017-08-31 01:40 +0200
        Re: [PATCH 0/7] EDAC, mce_amd: Issue decoded MCE through the  tracepoint mark gross <mgross@linux.intel.com> - 2017-09-04 01:40 +0200
          Re: [PATCH 0/7] EDAC, mce_amd: Issue decoded MCE through the  tracepoint Borislav Petkov <bp@alien8.de> - 2017-09-04 12:50 +0200

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