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Re: [PATCH v7 0/6] MIPS performance event support v7

To: Deng-Cheng Zhu <>
Subject: Re: [PATCH v7 0/6] MIPS performance event support v7
From: Matt Fleming <>
Date: Tue, 5 Oct 2010 08:52:37 +0100
Cc:,,,,,, Robert Richter <>
In-reply-to: <>
Original-recipient: rfc822;
References: <> <> <>
User-agent: Mutt/1.5.18 (2008-05-17)
On Tue, Oct 05, 2010 at 08:06:26AM +0800, Deng-Cheng Zhu wrote:
> I have a question about your "generalise" patchset: Do you see any issues
> or needed changes for the existing x86 (or sparc) Perf and Oprofile code by
> merging your patchset?
> Deng-Cheng

Just to be clear, if my patches are merged it won't break any existing
architectures - it is an optional interface and each architecture must
opt-in. Having said that, I'm sure the maintainers for other
architectures will be looking to move over to the new interface. It
certainly makes sense from a maintenance point of view.

If any problems are discovered with the generic perf-oprofile code
while trying to migrate architectures then they can be fixed. Rather
than trying to accomplish the mamoth task of guessing everybody's
requirements, I decided it would be easier to just get support for SH
and ARM working first and others can follow.

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