Re: [RFC][PATCH] tracing: Remove useless 4 bytes of padding from
every event
[Posted May 22, 2012 by jake]
| From: |
| Linus Torvalds <torvalds-AT-linux-foundation.org> |
| To: |
| Steven Rostedt <rostedt-AT-goodmis.org> |
| Subject: |
| Re: [RFC][PATCH] tracing: Remove useless 4 bytes of padding from
every event |
| Date: |
| Wed, 16 May 2012 13:04:22 -0700 |
| Message-ID: |
| <CA+55aFyKiNBRv=z8JjPTu=yFFvyWHhkGDxjWLm=R4HpwXzEw4g@mail.gmail.com> |
| Cc: |
| LKML <linux-kernel-AT-vger.kernel.org>,
Arjan van de Ven <arjan-AT-linux.intel.com>,
Ingo Molnar <mingo-AT-elte.hu>,
Frederic Weisbecker <fweisbec-AT-gmail.com>,
David Sharp <dhsharp-AT-google.com>,
Vaibhav Nagarnaik <vnagarnaik-AT-google.com>,
Peter Zijlstra <peterz-AT-infradead.org>,
Andrew Morton <akpm-AT-linux-foundation.org> |
| Archive-link: |
| Article, Thread
|
On Wed, May 16, 2012 at 1:00 PM, Steven Rostedt <rostedt@goodmis.org> wrote:
>
> Seriously though. What's your take on changing the kernel that will
> break an older distro. Obviously, this change is too early to apply. But
> because an old distro has one app that will break if we make a change in
> the kernel, is that enough to keep that change out?
I suspect that powertop is enough of a developer thing that if that's
the only thing that breaks, we don't have to worry too much.
I don't want to break *everybody*, so new distro's should be
up-to-date. But breaking something like a F14-15 timeframe distro or
something staid like a SLES (or "Debian Stale" or whatever they call
that thing that only takes crazy-old binaries)? It's fine. We don't
want to *rush* into it, but no, if those distros are basically not
updating, we can't care about them forever for something like
powertop.
Things that break *normal* applications are different. There the rule
really must be "never".
Linus
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