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Now that a thread's current comm is exported, it shows up in the call graph
and call tree even if it has no calls. That can happen because the calls
are recorded against the main thread's initial comm.
Add a table column to make it easy for the exported-sql-viewer.py script to
select only comms with calls.
Committer testing:
$ rm -f simple-retpoline.db
$ sudo ~acme/bin/perf script -i simple-retpoline.perf.data --itrace=be -s ~/libexec/perf-core/scripts/python/export-to-sqlite.py simple-retpoline.db branches calls
2019-07-10 12:25:33.200529 Creating database ...
2019-07-10 12:25:33.211548 Writing records...
2019-07-10 12:25:33.549630 Adding indexes
2019-07-10 12:25:33.560715 Dropping unused tables
2019-07-10 12:25:33.580201 Done
$ sha256sum tools/perf/scripts/python/export-to-sqlite.py ~/libexec/perf-core/scripts/python/export-to-sqlite.py
2922b642c392004dffa1d8789296478c85904623f5895bcb9b6cbf33e3ca999f tools/perf/scripts/python/export-to-sqlite.py
2922b642c392004dffa1d8789296478c85904623f5895bcb9b6cbf33e3ca999f /home/acme/libexec/perf-core/scripts/python/export-to-sqlite.py
$
$ sqlite3 simple-retpoline.db
SQLite version 3.26.0 2018-12-01 12:34:55
Enter ".help" for usage hints.
sqlite> .schema comms
CREATE TABLE comms (id integer NOT NULL PRIMARY KEY,comm varchar(16),c_thread_id bigint,c_time bigint,exec_flag boolean, has_calls boolean);
sqlite> select id,has_calls from comms;
0|1
1|1
sqlite> select distinct comm_id from calls;
0
1
sqlite>
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/r/20190710085810.1650-15-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
d9efc1d252