perf scripts python: export-to-postgresql.py: Add has_calls column to comms table
authorAdrian Hunter <adrian.hunter@intel.com>
Wed, 10 Jul 2019 08:58:03 +0000 (11:58 +0300)
committerArnaldo Carvalho de Melo <acme@redhat.com>
Wed, 10 Jul 2019 15:25:05 +0000 (12:25 -0300)
commitd9efc1d25214da500d6592095b542b32c15459df
treec34e82fa8a7989cc1ef7ea76182174e46633c8cb
parentecc8c9984dae9812a10936cb9c74957b68075e07
perf scripts python: export-to-postgresql.py: Add has_calls column to comms table

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>
tools/perf/scripts/python/export-to-postgresql.py