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	<title>oprofile &#8211; richliu&#039;s blog</title>
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		<title>ARM 的 Oprofile</title>
		<link>https://richliu.com/2009/12/12/820/arm-%e7%9a%84-oprofile/</link>
					<comments>https://richliu.com/2009/12/12/820/arm-%e7%9a%84-oprofile/#comments</comments>
		
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		<pubDate>Fri, 11 Dec 2009 19:02:18 +0000</pubDate>
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		<category><![CDATA[arm]]></category>
		<category><![CDATA[ARM11]]></category>
		<category><![CDATA[kernel]]></category>
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		<category><![CDATA[oprofile]]></category>
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					<description><![CDATA[<p>最近在弄 ARM11 的 Oprofile, 結果發現執行 opcontrol 的動作之後, 沒有 log 的 [&#8230;]</p>
<p>The post <a rel="nofollow" href="https://richliu.com/2009/12/12/820/arm-%e7%9a%84-oprofile/">ARM 的 Oprofile</a> appeared first on <a rel="nofollow" href="https://richliu.com">richliu&#039;s blog</a>.</p>
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										<content:encoded><![CDATA[<p>最近在弄 ARM11 的 Oprofile, 結果發現執行 opcontrol 的動作之後, 沒有 log 的動作.<br />
大致上的訊息是這樣的<br />
[Bash]<br />
# opcontrol &#8211;shutdown<br />
Stopping profiling.<br />
Killing daemon.<br />
# Stopping profiling.<br />
Killing daemon.<br />
opreport image:/vmlinux -l -w -g &gt; oprofile.txt<br />
error: no sample files found: profile specification too strict ?<br />
[/Bash]</p>
<p>這時請改用 timer interrupt</p>
<p>在 load oprofile modules 加上 timer=1<br />
若是 static link 時, 就要在 boot_cmd 加上 oprofile.timer=1</p>
<p>似乎目前的 kernel oprofile 不支援 ARM11MPCore.</p>
<p>http://oprofile.sourceforge.net/doc/detailed-parameters.html#timer</p>
<p>The post <a rel="nofollow" href="https://richliu.com/2009/12/12/820/arm-%e7%9a%84-oprofile/">ARM 的 Oprofile</a> appeared first on <a rel="nofollow" href="https://richliu.com">richliu&#039;s blog</a>.</p>
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