Re: [PATCH 17/19] perf scripts python: exported-sql-viewer.py: Add All branches report

[Arnaldo Carvalho de Melo]

Em Mon, Oct 01, 2018 at 09:28:51AM +0300, Adrian Hunter escreveu:
> Add a report to display branches in a similar fashion to perf script. The
> main purpose of this report is to display disassembly, however, presently,
> the only supported disassembler is Intel XED, and additionally the object
> code must be present in perf build ID cache.
> 
> To use Intel XED, libxed.so must be present. To build and install
> libxed.so:
> 	git clone https://github.com/intelxed/mbuild.git mbuild
> 	git clone https://github.com/intelxed/xed
> 	cd xed
> 	./mfile.py --share
> 	sudo ./mfile.py --prefix=/usr/local install
> 	sudo ldconfig

The above set of instructions went further than when I tried following
Andi's instructions for testing the xed support in 'perf script', so I
tried to test this following committer notes I had added to:

  4b715d24f4f1 perf tools: Add example call-graph script

But now I'm getting this, what am I missing? I suggest you catch this
exception and provide hints about what is missing :-)

- Arnaldo

[acme@jouet perf]$ perf script -i ~acme/perf.data.intel_pt -s ~/libexec/perf-core/scripts/python/export-to-postgresql.py pt_example branches calls
2018-10-22 15:46:29.964938 Creating database...
QSqlDatabase: QPSQL driver not loaded
QSqlDatabase: available drivers: QSQLITE
QSqlDatabase: an instance of QCoreApplication is required for loading driver plugins
QSqlQuery::exec: database not open
Traceback (most recent call last):
  File "/home/acme/libexec/perf-core/scripts/python/export-to-postgresql.py", line 283, in <module>
    do_query(query, 'CREATE DATABASE ' + dbname)
  File "/home/acme/libexec/perf-core/scripts/python/export-to-postgresql.py", line 274, in do_query
    raise Exception("Query failed: " + q.lastError().text())
Exception: Query failed: Driver not loaded Driver not loaded
Error running python script /home/acme/libexec/perf-core/scripts/python/export-to-postgresql.py
[acme@jouet perf]$

[root@jouet perf]# rpm -qa | grep -i sqlite
sqlite-debuginfo-3.14.2-1.fc25.x86_64
sqlite2-2.8.17-20.fc26.x86_64
sqlite-3.20.1-3.fc27.x86_64
sqlite-libs-3.20.1-3.fc27.x86_64
[root@jouet perf]#