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Can I use this kind of performance counters to implement oProfile?

To: <linux-mips@linux-mips.org>
Subject: Can I use this kind of performance counters to implement oProfile?
From: "colin" <colin@realtek.com.tw>
Date: Mon, 16 Jan 2006 16:17:17 +0800
Original-recipient: rfc822;linux-mips@linux-mips.org
Sender: linux-mips-bounce@linux-mips.org
Hi all,
Our SOC has performance counters, and we would like to use oProfile on it.
After surveying the oProfile doc, I found that the model of our performance
counters donot seem to fit oProfile.
This is because oProfile uses the interrupts caused by overflow of, say,
cache miss count to estimate the probability of this event in every portion.
Our SOC doesn't emit interrupt when event count overflow. Therefore,
oProfile cannot be used to estimate cache miss event on our chip. Is that
right?

Regards,
Colin










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