Re: PATCH [0/4] perf: clean-up of power events API
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- Subject: Re: PATCH [0/4] perf: clean-up of power events API
- From: Tejun Heo <tj@xxxxxxxxxx>
- Date: Fri, 08 Oct 2010 10:14:40 +0200
- Cc: Pierre Tardy <tardyp@xxxxxxxxx>, Mathieu Desnoyers <mathieu.desnoyers@xxxxxxxxxxxx>, Thomas Renninger <trenn@xxxxxxx>, Jean Pihet <jean.pihet@xxxxxxxxxxxxxx>, linux-trace-users@xxxxxxxxxxxxxxx, linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx, linux-perf-users@xxxxxxxxxxxxxxx, mingo@xxxxxxx, arjan@xxxxxxxxxxxxxxx, rjw@xxxxxxx, linux-omap@xxxxxxxxxxxxxxx, Peter Zijlstra <peterz@xxxxxxxxxxxxx>, Kevin Hilman <khilman@xxxxxxxxxxxxxxxxxxx>, Steven Rostedt <rostedt@xxxxxxxxxxx>, Frank Eigler <fche@xxxxxxxxxx>, Masami Hiramatsu <masami.hiramatsu.pt@xxxxxxxxxxx>, Thomas Gleixner <tglx@xxxxxxxxxxxxx>, Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>, Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
- In-reply-to: <20101007155816.GA5351@nowhere>
- References: <1286205661-24448-1-git-send-email-jean.pihet@xxxxxxxxxxxxxx> <201010062334.46971.trenn@xxxxxxx> <20101007150825.GB12581@Krystal> <AANLkTikT4xsh7iCQDX8ksewJwC-BeFov=Ab7iYo+hDmO@xxxxxxxxxxxxxx> <20101007155816.GA5351@nowhere>
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Hello,
On 10/07/2010 05:58 PM, Frederic Weisbecker wrote:
> I really feel uncomfortable with this tracepoint/ABI problem....
> Mathieu suggested we start a user library that could handle these
> changes when they are really necessary.
>
> Thoughts?
>
> (Adding Tejun in Cc).
Given that tracepoints are supposed to make internal operation
visible. I don't think it's a good idea to make it part of fixed ABI.
Maybe some core part can be put in stone but I think things like
internal workqueue implementation should be changeable without
worrying about ABI issues.
Thanks.
--
tejun
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