* RE: about systemtap test!
@ 2006-03-25 2:06 Stone, Joshua I
0 siblings, 0 replies; 2+ messages in thread
From: Stone, Joshua I @ 2006-03-25 2:06 UTC (permalink / raw)
To: Kevin Jia; +Cc: systemtap
Kevin Jia wrote:
> So why have not anything include the open's parenttheses? And what
> meaning of the "argstr"?
In your script, argstr has not been set to anything. It is being
inferred as a string from the format you gave, and the default value of
a string is "". If instead you use the syscall tapset to probe
syscall.open, then a formatted argstr will be built for you. The argstr
gives a string representation of all of the parameters to the syscall.
> 2. how use systemtap probes the watchpoint? Can you give me some
> examples?
I'm not sure what you're asking here. The SystemTap website has a few
architecture documents that might give the answer you're looking for.
If not, please try to rephrase your question.
Josh Stone
^ permalink raw reply [flat|nested] 2+ messages in thread
* about systemtap test!
@ 2006-03-25 1:29 Kevin Jia
0 siblings, 0 replies; 2+ messages in thread
From: Kevin Jia @ 2006-03-25 1:29 UTC (permalink / raw)
To: systemtap
Two problems:
1. I use the follow program for testing:
probe kernel.function("sys_open")
{
printf("%s(%d)open(%s)\n", execname(), pid(), argstr)
}
probe timer.ms(4000)
{
exit()
}
the result looks like this:
udev(10266) open()
udev(10266) open()
udev(10266) open()
nifd(1383) open()
...
So why have not anything include the open's parenttheses? And what
meaning of the "argstr"?
2. how use systemtap probes the watchpoint? Can you give me some examples?
thanks.
^ permalink raw reply [flat|nested] 2+ messages in thread
end of thread, other threads:[~2006-03-25 2:06 UTC | newest]
Thread overview: 2+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2006-03-25 2:06 about systemtap test! Stone, Joshua I
-- strict thread matches above, loose matches on Subject: below --
2006-03-25 1:29 Kevin Jia
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).