linux-kernel - Re: [PATCH 0/9] Performance counters for POWER

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Message-ID: <18791.57319.639438.433546@cargo.ozlabs.ibm.com>
Date:	Sat, 10 Jan 2009 10:38:15 +1100
From:	Paul Mackerras <paulus@...ba.org>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	linux-kernel@...r.kernel.org, Thomas Gleixner <tglx@...utronix.de>
Subject: Re: [PATCH 0/9] Performance counters for POWER

Ingo Molnar writes:

> Do timec.c and kerneltop.c work fine for you by any chance? If yes, could 
> you send us some sample output that you get with them on your power 
> testbox(es)?

timec.c works with some minor modifications.  I'll post my version in
a separate message.  The main difference is that syscall() on powerpc
returns -1 on error and sets errno, rather than returning a negative
error number.  I also added a way to specify raw events.

I haven't looked in detail at kerneltop.c yet.  I have done a small
test program that exercises interrupt counters though.

> Also, would this be the right moment for me to pull from you?

Actually, I have discovered some bugs, so I'll need to do new versions
of 7/9 and 8/9.  I'll let you know when I have redone the git tree.

Paul.
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