From: "ananth at in dot ibm dot com" <sourceware-bugzilla@sourceware.org>
To: systemtap@sources.redhat.com
Subject: [Bug translator/9816] functioncallcount.stp causes system crash
Date: Tue, 10 Feb 2009 10:19:00 -0000 [thread overview]
Message-ID: <20090210101725.32605.qmail@sourceware.org> (raw)
In-Reply-To: <20090204113414.9816.ananth@in.ibm.com>
------- Additional Comments From ananth at in dot ibm dot com 2009-02-10 10:17 -------
Our observations so far:
a. Powerpc instruction emulation had a bug. Patch submitted to fix it
(http://ozlabs.org/pipermail/linuxppc-dev/2009-February/068062.html)
b. functioncallcount.stp as it exists probes calls and inlines. That is a
problem -- at least on powerpc with the upstream kernel, set/clear/*_bit (part
of arch/powerpc/include/asm/bitops.h) shouldn't be probed. Its not clear how to
add a set of inline functions in a header file in the blacklist in one go.
c. Maybe its best not to allow routines in bitops.h to be traced?
d. The functioncallcount.stp needs to be modified to just probe .call and not
inlines.
Comments?
--
http://sourceware.org/bugzilla/show_bug.cgi?id=9816
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next prev parent reply other threads:[~2009-02-10 10:17 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-02-04 14:58 [Bug translator/9816] New: " ananth at in dot ibm dot com
2009-02-04 15:01 ` [Bug translator/9816] " mjw at redhat dot com
2009-02-04 18:52 ` fche at redhat dot com
2009-02-04 23:42 ` mhiramat at redhat dot com
2009-02-04 23:48 ` mhiramat at redhat dot com
2009-02-05 5:07 ` mhiramat at redhat dot com
2009-02-05 12:47 ` ananth at in dot ibm dot com
2009-02-05 16:49 ` mahesh at linux dot vnet dot ibm dot com
2009-02-05 18:43 ` mhiramat at redhat dot com
2009-02-05 20:27 ` fche at redhat dot com
2009-02-05 23:58 ` mhiramat at redhat dot com
2009-02-06 2:05 ` ananth at in dot ibm dot com
2009-02-06 3:42 ` ananth at in dot ibm dot com
2009-02-10 10:19 ` ananth at in dot ibm dot com [this message]
2009-02-10 17:31 ` ananth at in dot ibm dot com
2009-02-10 19:58 ` fche at redhat dot com
2009-02-11 7:14 ` ananth at in dot ibm dot com
2009-02-11 7:18 ` ananth at in dot ibm dot com
2009-02-12 15:03 ` ananth at in dot ibm dot com
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