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[Bug tapsets/11421] probe point mismatch while resolving probe point vfs.read
- From: "dsmith at redhat dot com" <sourceware-bugzilla at sourceware dot org>
- To: systemtap at sources dot redhat dot com
- Date: 23 Mar 2010 14:16:17 -0000
- Subject: [Bug tapsets/11421] probe point mismatch while resolving probe point vfs.read
- References: <20100323130301.11421.tethys@gmail.com>
- Reply-to: sourceware-bugzilla at sourceware dot org
------- Additional Comments From dsmith at redhat dot com 2010-03-23 14:16 -------
(In reply to comment #0)
> In section 2.1.3
>
(http://sourceware.org/systemtap/SystemTap_Beginners_Guide/using-systemtap.html#testing),
> it says to try:
>
> stap -v -e 'probe vfs.read {printf("read performed\n"); exit()}'
>
> This doesn't work...
Can you try the following? 'vfs.read' maps to 'kernel.function("vfs_read")'
# stap -v -e 'probe kernel.function("vfs_read") {printf("read performed\n");
exit()}'
Also, as Frank mentioned, the output of 'stap-report' will be helpful.
--
http://sourceware.org/bugzilla/show_bug.cgi?id=11421
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