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Re: Does oProfile support 4KE now?

To: colin <colin@realtek.com.tw>
Subject: Re: Does oProfile support 4KE now?
From: Ralf Baechle <ralf@linux-mips.org>
Date: Wed, 16 Nov 2005 16:10:32 +0000
Cc: linux-mips@linux-mips.org
In-reply-to: <006c01c5ea83$c7cec780$106215ac@realtek.com.tw>
Original-recipient: rfc822;linux-mips@linux-mips.org
References: <006c01c5ea83$c7cec780$106215ac@realtek.com.tw>
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On Wed, Nov 16, 2005 at 04:00:16PM +0800, colin wrote:

> >From the CVS of oProfile
> http://cvs.sourceforge.net/viewcvs.py/oprofile/oprofile/events/mips/, I
> donot see 4KE in it.

The 4K processors don't implement performance counters which are required
for any serious use of Oprofile.  Lacking performance counters there is
always the fallback option of using the timer interrupt but of course
that means you won't be able to take advantage of much of Oprofile's
fancyness.

  Ralf

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