LXR linux/tools/perf/scripts/perl/workqueue-stats.pl

   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}
 130