fche changed the topic of #systemtap to: http://sourceware.org/systemtap; email systemtap@sourceware.org if answers here not timely, conversations may be logged
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<vincent-> Hello. I'm trying to cross-compile the instrumentation module so I'm following this guide: https://www.sourceware.org/systemtap/SystemTap_Beginners_Guide/cross-compiling.html
<vincent-> But at the bottom of that document it says the following: "The host system must be the same architecture and running the same distribution of Linux as the target system in order for the built instrumentation module to work. "
<vincent-> What I want to to cross-compile the instrumentation module for a different target architecture. Let's say, the host arch is x86 and the target arch is mips.
<vincent-> Is that impossible to do?
<vincent-> I was thinking on building systemtap for the host architecture, so I can run the stap binary on the host, and then use it to cross-compile the instrumentation module for the target architecture.
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<fche> vincent-, this sort of thing can work
<fche> see the [man stap] page section on -a ARCH
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<irker741> systemtap: csanting systemtap.git:refs/heads/master * release-3.0-96-geb86025 / runtime/linux/loc2c-runtime.h tapset/uconversions-guru.stp: PR11637: Added set_user_* functionality http://tinyurl.com/zm4qoar
<irker741> systemtap: csanting systemtap.git:refs/heads/master * release-3.0-97-gcbd1afb / tapset/uconversions-guru.stp testsuite/systemtap.base/set_user.c testsuite/systemtap.base/set_user.exp testsuite/systemtap.base/set_user.stp testsuite/systemtap.base/set_user_fail.stp: 11637: Added test cases, added to set_user_* functions http://tinyurl.com/z4n6g8o
<irker741> systemtap: csanting systemtap.git:refs/heads/master * release-3.0-98-gef8e3da / NEWS doc/SystemTap_Tapset_Reference/tapsets.tmpl testsuite/systemtap.base/set_user.c testsuite/systemtap.base/set_user.stp testsuite/systemtap.base/set_user_fail.stp: PR11637: Completed test cases, updated documentation http://tinyurl.com/hqc96wt
<irker741> systemtap: csanting systemtap.git:refs/heads/master * release-3.0-99-g73ec640 / testsuite/systemtap.base/set_user.c testsuite/systemtap.base/set_user.stp: PR11637: Updated probe point for test case http://tinyurl.com/zwy8aka
<irker741> systemtap: csanting systemtap.git:refs/heads/master * release-3.0-123-g2e660d7 / : PR11637: Merge set_user_*() functions with master http://tinyurl.com/gry23pp
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<irker741> systemtap: dsmith systemtap.git:refs/heads/master * release-3.0-124-gcb71bac / tapset/linux/nd_syscalls.stp tapset/linux/syscalls.stp testsuite/systemtap.syscall/fanotify.c: Make some small improvements to [nd_]syscall.fanotify_mark for RHEL7. http://tinyurl.com/jx63jnt
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<jistone> jdetter_, welcome
* jistone == github @cuviper, fyi
<jdetter_> thanks! Yeah, I think system tap looks really useful
<jdetter_> It's a red hat project too right?
<fche> jdetter_, hi
<jistone> it's an open project, but yes, red hat does most of the development
<fche> jdetter_, rh people have been its most regular contributors, but there are plenty of non-rh'ers too
<jdetter_> oh sweet
<jdetter_> what's the URL for git cloning?
<fche> git://sourceware.org/git/systemtap.git is one
<jistone> jdetter_, it's directly available on fedora and rhel too
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<jistone> a lot of the others too, but we're the most diligent about keeping up to date :)
<jdetter_> that's good! :)
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<jdetter_> Is it easiest to just run stap as root?
<fche> most common uses of stap are for system-wide or kernel introspection, so those do require root (or equivalent)
<jdetter_> on fedora do I just add myself to stapusr?
<fche> stapdev would be root-equivalent
<fche> see the PERMISSIONS section in [man stap]
<jdetter_> ok, thanks
<irker741> systemtap: dsmith systemtap.git:refs/heads/master * release-3.0-125-gbfcac18 / testsuite/systemtap.examples/profiling/timeout.stp: Fix typo in testsuite/systemtap.examples/profiling/timeout.stp. http://tinyurl.com/zmcvnpw
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<jdetter__> stap is complaining that I'm missing kernel debug symbols, I already did dnf install kernel-devel, is there anything else I need?
<jistone> jdetter__, that's kernel-debuginfo. try: dnf debuginfo-install kernel
<jdetter__> thanks!
<jistone> FYI, debuginfo isn't always needed. e.g. the "syscall.*" probes use debuginfo, but we've also aliased "nd_syscall.*" to make do without
<jdetter__> ok, that's what it was complaining about was trying to do a system call probe without the debug info, installing the debug info fixed it for me :)
<jistone> yeah, generally speaking you'll have a lot more available *with* debuginfo, so it's good to have
<jdetter__> Ok great, thanks again, I'll probably have more questions in a bit :)
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<detter> Ok, I'm using detter from now on :)
<jistone> imposter!
<detter> lol
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<irker676> systemtap: jistone systemtap.git:refs/heads/master * release-3.0-126-g375f983 / testsuite/systemtap.exelib/pthreadprobes.exp testsuite/systemtap.exelib/pthreadprobes.stp: testsuite: refactor pthreadprobes.exp http://tinyurl.com/jkqj96w