From 37c1f991b1bcdbe268b99b22e265738f4209f4f4 Mon Sep 17 00:00:00 2001 From: Adrian Hunter Date: Wed, 10 Jul 2019 11:58:09 +0300 Subject: [PATCH] perf scripts python: export-to-sqlite.py: Export switch events Export switch events to a new table 'context_switches' and create a view 'context_switches_view'. The table and view will show automatically in the exported-sql-viewer.py script. If the table ends up empty, then it and the view are dropped. Committer testing: Use the exported-sql-viewer.py and look at "Tables" -> "context_switches": id machine_id time cpu thread_out_id comm_out_id thread_in_id comm_in_id flags 1 1 187836111885918 7 1 1 2 2 3 2 1 187836111889369 7 1 1 2 2 0 3 1 187836112464618 7 2 3 1 1 1 4 1 187836112465511 7 2 3 1 1 0 Signed-off-by: Adrian Hunter Tested-by: Arnaldo Carvalho de Melo Cc: Jiri Olsa Link: http://lkml.kernel.org/r/20190710085810.1650-21-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/scripts/python/export-to-sqlite.py | 41 +++++++++++++++++++ 1 file changed, 41 insertions(+) diff --git a/tools/perf/scripts/python/export-to-sqlite.py b/tools/perf/scripts/python/export-to-sqlite.py index 9156f6a1e5f0..8043a7272a56 100644 --- a/tools/perf/scripts/python/export-to-sqlite.py +++ b/tools/perf/scripts/python/export-to-sqlite.py @@ -306,6 +306,17 @@ do_query(query, 'CREATE TABLE pwrx (' 'last_cstate integer,' 'wake_reason integer)') +do_query(query, 'CREATE TABLE context_switches (' + 'id integer NOT NULL PRIMARY KEY,' + 'machine_id bigint,' + 'time bigint,' + 'cpu integer,' + 'thread_out_id bigint,' + 'comm_out_id bigint,' + 'thread_in_id bigint,' + 'comm_in_id bigint,' + 'flags integer)') + # printf was added to sqlite in version 3.8.3 sqlite_has_printf = False try: @@ -530,6 +541,29 @@ do_query(query, 'CREATE VIEW power_events_view AS ' ' INNER JOIN selected_events ON selected_events.id = evsel_id' ' WHERE selected_events.name IN (\'cbr\',\'mwait\',\'exstop\',\'pwre\',\'pwrx\')') +do_query(query, 'CREATE VIEW context_switches_view AS ' + 'SELECT ' + 'context_switches.id,' + 'context_switches.machine_id,' + 'context_switches.time,' + 'context_switches.cpu,' + 'th_out.pid AS pid_out,' + 'th_out.tid AS tid_out,' + 'comm_out.comm AS comm_out,' + 'th_in.pid AS pid_in,' + 'th_in.tid AS tid_in,' + 'comm_in.comm AS comm_in,' + 'CASE WHEN context_switches.flags = 0 THEN \'in\'' + ' WHEN context_switches.flags = 1 THEN \'out\'' + ' WHEN context_switches.flags = 3 THEN \'out preempt\'' + ' ELSE context_switches.flags ' + 'END AS flags' + ' FROM context_switches' + ' INNER JOIN threads AS th_out ON th_out.id = context_switches.thread_out_id' + ' INNER JOIN threads AS th_in ON th_in.id = context_switches.thread_in_id' + ' INNER JOIN comms AS comm_out ON comm_out.id = context_switches.comm_out_id' + ' INNER JOIN comms AS comm_in ON comm_in.id = context_switches.comm_in_id') + do_query(query, 'END TRANSACTION') evsel_query = QSqlQuery(db) @@ -571,6 +605,8 @@ exstop_query = QSqlQuery(db) exstop_query.prepare("INSERT INTO exstop VALUES (?, ?)") pwrx_query = QSqlQuery(db) pwrx_query.prepare("INSERT INTO pwrx VALUES (?, ?, ?, ?)") +context_switch_query = QSqlQuery(db) +context_switch_query.prepare("INSERT INTO context_switches VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?)") def trace_begin(): printdate("Writing records...") @@ -620,6 +656,8 @@ def trace_end(): drop("pwrx") if is_table_empty("cbr"): drop("cbr") + if is_table_empty("context_switches"): + drop("context_switches") if (unhandled_count): printdate("Warning: ", unhandled_count, " unhandled events") @@ -753,3 +791,6 @@ def synth_data(id, config, raw_buf, *x): pwrx(id, raw_buf) elif config == 5: cbr(id, raw_buf) + +def context_switch_table(*x): + bind_exec(context_switch_query, 9, x)