1#!/usr/bin/perl -w
  2# (c) 2009, Tom Zanussi <tzanussi@gmail.com>
  3# Licensed under the terms of the GNU GPL License version 2
  4
  5# Displays workqueue stats
  6#
  7# Usage:
  8#
  9#   perf record -c 1 -f -a -R -e workqueue:workqueue_creation -e
 10#     workqueue:workqueue_destruction -e workqueue:workqueue_execution
 11#     -e workqueue:workqueue_insertion
 12#
 13#   perf script -p -s tools/perf/scripts/perl/workqueue-stats.pl
 14
 15use 5.010000;
 16use strict;
 17use warnings;
 18
 19use lib "$ENV{'PERF_EXEC_PATH'}/scripts/perl/Perf-Trace-Util/lib";
 20use lib "./Perf-Trace-Util/lib";
 21use Perf::Trace::Core;
 22use Perf::Trace::Util;
 23
 24my @cpus;
 25
 26sub workqueue::workqueue_destruction
 27{
 28    my ($event_name, $context, $common_cpu, $common_secs, $common_nsecs,
 29	$common_pid, $common_comm,
 30	$thread_comm, $thread_pid) = @_;
 31
 32    $cpus[$common_cpu]{$thread_pid}{destroyed}++;
 33    $cpus[$common_cpu]{$thread_pid}{comm} = $thread_comm;
 34}
 35
 36sub workqueue::workqueue_creation
 37{
 38    my ($event_name, $context, $common_cpu, $common_secs, $common_nsecs,
 39	$common_pid, $common_comm,
 40	$thread_comm, $thread_pid, $cpu) = @_;
 41
 42    $cpus[$common_cpu]{$thread_pid}{created}++;
 43    $cpus[$common_cpu]{$thread_pid}{comm} = $thread_comm;
 44}
 45
 46sub workqueue::workqueue_execution
 47{
 48    my ($event_name, $context, $common_cpu, $common_secs, $common_nsecs,
 49	$common_pid, $common_comm,
 50	$thread_comm, $thread_pid, $func) = @_;
 51
 52    $cpus[$common_cpu]{$thread_pid}{executed}++;
 53    $cpus[$common_cpu]{$thread_pid}{comm} = $thread_comm;
 54}
 55
 56sub workqueue::workqueue_insertion
 57{
 58    my ($event_name, $context, $common_cpu, $common_secs, $common_nsecs,
 59	$common_pid, $common_comm,
 60	$thread_comm, $thread_pid, $func) = @_;
 61
 62    $cpus[$common_cpu]{$thread_pid}{inserted}++;
 63    $cpus[$common_cpu]{$thread_pid}{comm} = $thread_comm;
 64}
 65
 66sub trace_end
 67{
 68    print "workqueue work stats:\n\n";
 69    my $cpu = 0;
 70    printf("%3s %6s %6s\t%-20s\n", "cpu", "ins", "exec", "name");
 71    printf("%3s %6s %6s\t%-20s\n", "---", "---", "----", "----");
 72    foreach my $pidhash (@cpus) {
 73	while ((my $pid, my $wqhash) = each %$pidhash) {
 74	    my $ins = $$wqhash{'inserted'} || 0;
 75	    my $exe = $$wqhash{'executed'} || 0;
 76	    my $comm = $$wqhash{'comm'} || "";
 77	    if ($ins || $exe) {
 78		printf("%3u %6u %6u\t%-20s\n", $cpu, $ins, $exe, $comm);
 79	    }
 80	}
 81	$cpu++;
 82    }
 83
 84    $cpu = 0;
 85    print "\nworkqueue lifecycle stats:\n\n";
 86    printf("%3s %6s %6s\t%-20s\n", "cpu", "created", "destroyed", "name");
 87    printf("%3s %6s %6s\t%-20s\n", "---", "-------", "---------", "----");
 88    foreach my $pidhash (@cpus) {
 89	while ((my $pid, my $wqhash) = each %$pidhash) {
 90	    my $created = $$wqhash{'created'} || 0;
 91	    my $destroyed = $$wqhash{'destroyed'} || 0;
 92	    my $comm = $$wqhash{'comm'} || "";
 93	    if ($created || $destroyed) {
 94		printf("%3u %6u %6u\t%-20s\n", $cpu, $created, $destroyed,
 95		       $comm);
 96	    }
 97	}
 98	$cpu++;
 99    }
100
101    print_unhandled();
102}
103
104my %unhandled;
105
106sub print_unhandled
107{
108    if ((scalar keys %unhandled) == 0) {
109	return;
110    }
111
112    print "\nunhandled events:\n\n";
113
114    printf("%-40s  %10s\n", "event", "count");
115    printf("%-40s  %10s\n", "----------------------------------------",
116	   "-----------");
117
118    foreach my $event_name (keys %unhandled) {
119	printf("%-40s  %10d\n", $event_name, $unhandled{$event_name});
120    }
121}
122
123sub trace_unhandled
124{
125    my ($event_name, $context, $common_cpu, $common_secs, $common_nsecs,
126	$common_pid, $common_comm) = @_;
127
128    $unhandled{$event_name}++;
129}