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, 11 insertions, 8 deletions

diff --git a/tools/perf/scripts/python/export-to-postgresql.py b/tools/perf/scripts/python/export-to-postgresql.py
index 00ab972a2eba..c3eae1d77d36 100644
--- a/tools/perf/scripts/python/export-to-postgresql.py
+++ b/tools/perf/scripts/python/export-to-postgresql.py
@@ -251,6 +251,9 @@ perf_db_export_callchains = False
 def printerr(*args, **kw_args):
         print(*args, file=sys.stderr, **kw_args)
 
+def printdate(*args, **kw_args):
+        print(datetime.datetime.today(), *args, sep=' ', **kw_args)
+
 def usage():
         printerr("Usage is: export-to-postgresql.py <database name> [<columns>] [<calls>] [<callchains>]")
         printerr("where:        columns         'all' or 'branches'")
@@ -289,7 +292,7 @@ def do_query(q, s):
                 return
         raise Exception("Query failed: " + q.lastError().text())
 
-print(datetime.datetime.today(), "Creating database...")
+printdate("Creating database...")
 
 db = QSqlDatabase.addDatabase('QPSQL')
 query = QSqlQuery(db)
@@ -582,7 +585,7 @@ if perf_db_export_calls:
         call_file               = open_output_file("call_table.bin")
 
 def trace_begin():
-        print(datetime.datetime.today(), "Writing to intermediate files...")
+        printdate("Writing to intermediate files...")
         # id == 0 means unknown.  It is easier to create records for them than replace the zeroes with NULLs
         evsel_table(0, "unknown")
         machine_table(0, 0, "unknown")
@@ -598,7 +601,7 @@ def trace_begin():
 unhandled_count = 0
 
 def trace_end():
-        print(datetime.datetime.today(), "Copying to database...")
+        printdate("Copying to database...")
         copy_output_file(evsel_file,            "selected_events")
         copy_output_file(machine_file,          "machines")
         copy_output_file(thread_file,           "threads")
@@ -613,7 +616,7 @@ def trace_end():
         if perf_db_export_calls:
                 copy_output_file(call_file,             "calls")
 
-        print(datetime.datetime.today(), "Removing intermediate files...")
+        printdate("Removing intermediate files...")
         remove_output_file(evsel_file)
         remove_output_file(machine_file)
         remove_output_file(thread_file)
@@ -628,7 +631,7 @@ def trace_end():
         if perf_db_export_calls:
                 remove_output_file(call_file)
         os.rmdir(output_dir_name)
-        print(datetime.datetime.today(), "Adding primary keys")
+        printdate("Adding primary keys")
         do_query(query, 'ALTER TABLE selected_events ADD PRIMARY KEY (id)')
         do_query(query, 'ALTER TABLE machines        ADD PRIMARY KEY (id)')
         do_query(query, 'ALTER TABLE threads         ADD PRIMARY KEY (id)')
@@ -643,7 +646,7 @@ def trace_end():
         if perf_db_export_calls:
                 do_query(query, 'ALTER TABLE calls           ADD PRIMARY KEY (id)')
 
-        print(datetime.datetime.today(), "Adding foreign keys")
+        printdate("Adding foreign keys")
         do_query(query, 'ALTER TABLE threads '
                                         'ADD CONSTRAINT machinefk  FOREIGN KEY (machine_id)   REFERENCES machines   (id),'
                                         'ADD CONSTRAINT processfk  FOREIGN KEY (process_id)   REFERENCES threads    (id)')
@@ -679,8 +682,8 @@ def trace_end():
                 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