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<
fche >
jhg_, I haven't tried lately; probe module("/full/path/to/your/foo.ko") may work better than back in 2012ish
02:02
<
fche >
some improvements have been made in the last year
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<
jhg_ >
fche: trying it
13:41
<
jhg_ >
stap -v -l 'module("/full/path/to/your/foo.ko").function("*")'
13:41
<
jhg_ >
seems to work ^^^
13:46
* jhg_
wonders what the difference is between probe module() and module()
13:46
<
fche >
-l takes a probe point specification as a parameter
13:47
<
fche >
-e '....' takes a whole script, i.e. 'probe PROBEPOINTSPEC { HANDLER }'
13:48
* jhg_
light bulb flicks on
13:48
<
jhg_ >
thanks fche =)
13:48
<
fche >
no, thanks dsmith (commit 51f0b234568) :-)
13:51
<
jhg_ >
fche: relative module paths?
13:51
<
fche >
that was the final patch from a set of related cleanups
13:52
<
jhg_ >
interesting.
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<
jhg_ >
thanks dsmith!
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<
jhg_ >
(same as drsmith ?)
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<
jhg_ >
thanks drsmith! =)
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<
jhg_ >
in particular, the VFS:dentry:devfs:d_iput {} part
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<
irker905 >
systemtap: fche systemtap.git:refs/heads/master * release-3.0-166-gf5dfa57 / man/stapprobes.3stap: stapprobes.3: Spell out that $context variables are probe-point specific.
http://tinyurl.com/zo498nt
20:50
<
fche >
$dentry->d_lockref->count should give it to you in stap script language
20:51
<
jhg_ >
I had the dot instead of arrow
20:51
<
jhg_ >
for d_lockref.count
20:51
<
fche >
yeah, a common error, for better or worse. stap warns about that, no ?
20:52
<
fche >
see the $tapset/linux/vfs.stp file for some vfs probes
20:53
<
fche >
hm, I think we have a better warning now
20:53
<
fche >
how old is your stap ?
20:53
<
jhg_ >
Systemtap translator/driver (version 3.0/0.165, Debian version 3.0-6)
20:54
<
jhg_ >
I am troubleshooting an intermittent issue with a filesystem that will fail on getcwd() (ENOENT) after some amount of cache operations
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<
jhg_ >
fche: should I build from git repo instead of package sources?
20:55
<
fche >
3.0 is current
20:57
<
fche >
I am expecting a different error message, though can't find it in the code just now
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<
jhg_ >
fche: I subscribed to it
21:13
<
jhg_ >
d_count seems to be an odd number. -128
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<
jhg_ >
for everything
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<
fche >
thanks flu for the multiple-versions writeup.
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