perf script python: Add printdate function to SQL exporters

Introduce a printdate function to eliminate the repetitive use of
datetime.datetime.today() in the SQL exporting scripts.

Signed-off-by: Tony Jones <tonyj@suse.de>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Link: http://lkml.kernel.org/r/20190309000518.2438-5-tonyj@suse.de
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

1 files changed, 8 insertions, 5 deletions

diff --git a/tools/perf/scripts/python/export-to-sqlite.py b/tools/perf/scripts/python/export-to-sqlite.py
index 3da338243aed..3b71902a5a21 100644
--- a/tools/perf/scripts/python/export-to-sqlite.py
+++ b/tools/perf/scripts/python/export-to-sqlite.py
@@ -65,6 +65,9 @@ perf_db_export_callchains = False
 def printerr(*args, **keyword_args):
         print(*args, file=sys.stderr, **keyword_args)
 
+def printdate(*args, **kw_args):
+        print(datetime.datetime.today(), *args, sep=' ', **kw_args)
+
 def usage():
         printerr("Usage is: export-to-sqlite.py <database name> [<columns>] [<calls>] [<callchains>]");
         printerr("where:        columns         'all' or 'branches'");
@@ -105,7 +108,7 @@ def do_query_(q):
                 return
         raise Exception("Query failed: " + q.lastError().text())
 
-print(datetime.datetime.today(), "Creating database ...")
+printdate("Creating database ...")
 
 db_exists = False
 try:
@@ -383,7 +386,7 @@ if perf_db_export_calls:
         call_query.prepare("INSERT INTO calls VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)")
 
 def trace_begin():
-        print(datetime.datetime.today(), "Writing records...")
+        printdate("Writing records...")
         do_query(query, 'BEGIN TRANSACTION')
         # id == 0 means unknown.  It is easier to create records for them than replace the zeroes with NULLs
         evsel_table(0, "unknown")
@@ -402,14 +405,14 @@ unhandled_count = 0
 def trace_end():
         do_query(query, 'END TRANSACTION')
 
-        print(datetime.datetime.today(), "Adding indexes")
+        printdate("Adding indexes")
         if perf_db_export_calls:
                 do_query(query, 'CREATE INDEX pcpid_idx ON calls (parent_call_path_id)')
                 do_query(query, 'CREATE INDEX pid_idx ON calls (parent_id)')
 
         if (unhandled_count):
-                print(datetime.datetime.today(), "Warning: ", unhandled_count, " unhandled events")
-        print(datetime.datetime.today(), "Done")
+                printdate("Warning: ", unhandled_count, " unhandled events")
+        printdate("Done")
 
 def trace_unhandled(event_name, context, event_fields_dict):
         global unhandled_count