* [Bug runtime/23284] New: dmesg should identify the name of the stap script
@ 2018-06-13 15:54 serhei.public at gmail dot com
2018-06-13 15:56 ` [Bug runtime/23284] " serhei.public at gmail dot com
` (3 more replies)
0 siblings, 4 replies; 5+ messages in thread
From: serhei.public at gmail dot com @ 2018-06-13 15:54 UTC (permalink / raw)
To: systemtap
https://sourceware.org/bugzilla/show_bug.cgi?id=23284
Bug ID: 23284
Summary: dmesg should identify the name of the stap script
Product: systemtap
Version: unspecified
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: runtime
Assignee: systemtap at sourceware dot org
Reporter: serhei.public at gmail dot com
Target Milestone: ---
Many systemtap issues can be diagnosed by viewing dmesg output during a
testsuite run. Dmesg prints the module name when a stap module is loaded.
However, neither systemtap.sum nor systemtap.log record the stap module name
for every stap run, so it's not easy to tell which testcase caused a particular
warning.
This can be fixed by having the runtime print the original name of the script
file to dmesg.
The eBPF backend should also do this.
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* [Bug runtime/23284] dmesg should identify the name of the stap script
2018-06-13 15:54 [Bug runtime/23284] New: dmesg should identify the name of the stap script serhei.public at gmail dot com
@ 2018-06-13 15:56 ` serhei.public at gmail dot com
2018-07-03 12:45 ` mcermak at redhat dot com
` (2 subsequent siblings)
3 siblings, 0 replies; 5+ messages in thread
From: serhei.public at gmail dot com @ 2018-06-13 15:56 UTC (permalink / raw)
To: systemtap
https://sourceware.org/bugzilla/show_bug.cgi?id=23284
--- Comment #1 from Serhei Makarov <serhei.public at gmail dot com> ---
I've implemented a basic patch for this.
However, typically the full path to the stap script file is printed. It would
probably be good to trim directories from the stap file path.
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* [Bug runtime/23284] dmesg should identify the name of the stap script
2018-06-13 15:54 [Bug runtime/23284] New: dmesg should identify the name of the stap script serhei.public at gmail dot com
2018-06-13 15:56 ` [Bug runtime/23284] " serhei.public at gmail dot com
@ 2018-07-03 12:45 ` mcermak at redhat dot com
2018-07-03 18:52 ` serhei.public at gmail dot com
2018-07-05 15:49 ` serhei.public at gmail dot com
3 siblings, 0 replies; 5+ messages in thread
From: mcermak at redhat dot com @ 2018-07-03 12:45 UTC (permalink / raw)
To: systemtap
https://sourceware.org/bugzilla/show_bug.cgi?id=23284
Martin Cermak <mcermak at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |mcermak at redhat dot com
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* [Bug runtime/23284] dmesg should identify the name of the stap script
2018-06-13 15:54 [Bug runtime/23284] New: dmesg should identify the name of the stap script serhei.public at gmail dot com
2018-06-13 15:56 ` [Bug runtime/23284] " serhei.public at gmail dot com
2018-07-03 12:45 ` mcermak at redhat dot com
@ 2018-07-03 18:52 ` serhei.public at gmail dot com
2018-07-05 15:49 ` serhei.public at gmail dot com
3 siblings, 0 replies; 5+ messages in thread
From: serhei.public at gmail dot com @ 2018-07-03 18:52 UTC (permalink / raw)
To: systemtap
https://sourceware.org/bugzilla/show_bug.cgi?id=23284
--- Comment #2 from Serhei Makarov <serhei.public at gmail dot com> ---
Directory trimming implemented in commit 55b338a5.
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* [Bug runtime/23284] dmesg should identify the name of the stap script
2018-06-13 15:54 [Bug runtime/23284] New: dmesg should identify the name of the stap script serhei.public at gmail dot com
` (2 preceding siblings ...)
2018-07-03 18:52 ` serhei.public at gmail dot com
@ 2018-07-05 15:49 ` serhei.public at gmail dot com
3 siblings, 0 replies; 5+ messages in thread
From: serhei.public at gmail dot com @ 2018-07-05 15:49 UTC (permalink / raw)
To: systemtap
https://sourceware.org/bugzilla/show_bug.cgi?id=23284
Serhei Makarov <serhei.public at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |FIXED
--- Comment #3 from Serhei Makarov <serhei.public at gmail dot com> ---
Equivalent functionality for stapbpf implemented in commit c38895a2a7. For
every bpf program loaded into the kernel, stapbpf outputs a corresponding
notice to dmesg(), mirroring _stp_print_kernel_info in the default backend.
This required defining a new ELF section 'stapbpf_script_name' in the .bo files
output by bpf-translate.cxx.
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