a3412d9b35
Some minor fixes for the workqueue-stats script: - Fix nuisance 'use of uninitialized value' warnings Cc: Frédéric Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> LKML-Reference: <1273466820-9330-6-git-send-email-tzanussi@gmail.com> Signed-off-by: Tom Zanussi <tzanussi@gmail.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
129 lines
3.3 KiB
Perl
129 lines
3.3 KiB
Perl
#!/usr/bin/perl -w
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# (c) 2009, Tom Zanussi <tzanussi@gmail.com>
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# Licensed under the terms of the GNU GPL License version 2
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# Displays workqueue stats
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#
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# Usage:
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#
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# perf record -c 1 -f -a -R -e workqueue:workqueue_creation -e
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# workqueue:workqueue_destruction -e workqueue:workqueue_execution
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# -e workqueue:workqueue_insertion
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#
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# perf trace -p -s tools/perf/scripts/perl/workqueue-stats.pl
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use 5.010000;
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use strict;
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use warnings;
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use lib "$ENV{'PERF_EXEC_PATH'}/scripts/perl/Perf-Trace-Util/lib";
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use lib "./Perf-Trace-Util/lib";
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use Perf::Trace::Core;
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use Perf::Trace::Util;
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my @cpus;
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sub workqueue::workqueue_destruction
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{
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my ($event_name, $context, $common_cpu, $common_secs, $common_nsecs,
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$common_pid, $common_comm,
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$thread_comm, $thread_pid) = @_;
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$cpus[$common_cpu]{$thread_pid}{destroyed}++;
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$cpus[$common_cpu]{$thread_pid}{comm} = $thread_comm;
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}
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sub workqueue::workqueue_creation
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{
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my ($event_name, $context, $common_cpu, $common_secs, $common_nsecs,
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$common_pid, $common_comm,
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$thread_comm, $thread_pid, $cpu) = @_;
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$cpus[$common_cpu]{$thread_pid}{created}++;
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$cpus[$common_cpu]{$thread_pid}{comm} = $thread_comm;
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}
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sub workqueue::workqueue_execution
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{
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my ($event_name, $context, $common_cpu, $common_secs, $common_nsecs,
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$common_pid, $common_comm,
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$thread_comm, $thread_pid, $func) = @_;
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$cpus[$common_cpu]{$thread_pid}{executed}++;
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$cpus[$common_cpu]{$thread_pid}{comm} = $thread_comm;
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}
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sub workqueue::workqueue_insertion
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{
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my ($event_name, $context, $common_cpu, $common_secs, $common_nsecs,
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$common_pid, $common_comm,
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$thread_comm, $thread_pid, $func) = @_;
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$cpus[$common_cpu]{$thread_pid}{inserted}++;
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$cpus[$common_cpu]{$thread_pid}{comm} = $thread_comm;
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}
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sub trace_end
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{
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print "workqueue work stats:\n\n";
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my $cpu = 0;
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printf("%3s %6s %6s\t%-20s\n", "cpu", "ins", "exec", "name");
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printf("%3s %6s %6s\t%-20s\n", "---", "---", "----", "----");
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foreach my $pidhash (@cpus) {
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while ((my $pid, my $wqhash) = each %$pidhash) {
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my $ins = $$wqhash{'inserted'} || 0;
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my $exe = $$wqhash{'executed'} || 0;
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my $comm = $$wqhash{'comm'} || "";
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if ($ins || $exe) {
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printf("%3u %6u %6u\t%-20s\n", $cpu, $ins, $exe, $comm);
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}
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}
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$cpu++;
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}
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$cpu = 0;
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print "\nworkqueue lifecycle stats:\n\n";
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printf("%3s %6s %6s\t%-20s\n", "cpu", "created", "destroyed", "name");
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printf("%3s %6s %6s\t%-20s\n", "---", "-------", "---------", "----");
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foreach my $pidhash (@cpus) {
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while ((my $pid, my $wqhash) = each %$pidhash) {
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my $created = $$wqhash{'created'} || 0;
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my $destroyed = $$wqhash{'destroyed'} || 0;
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my $comm = $$wqhash{'comm'} || "";
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if ($created || $destroyed) {
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printf("%3u %6u %6u\t%-20s\n", $cpu, $created, $destroyed,
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$comm);
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}
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}
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$cpu++;
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}
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print_unhandled();
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}
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my %unhandled;
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sub print_unhandled
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{
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if ((scalar keys %unhandled) == 0) {
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return;
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}
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print "\nunhandled events:\n\n";
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printf("%-40s %10s\n", "event", "count");
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printf("%-40s %10s\n", "----------------------------------------",
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"-----------");
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foreach my $event_name (keys %unhandled) {
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printf("%-40s %10d\n", $event_name, $unhandled{$event_name});
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}
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}
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sub trace_unhandled
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{
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my ($event_name, $context, $common_cpu, $common_secs, $common_nsecs,
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$common_pid, $common_comm) = @_;
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$unhandled{$event_name}++;
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}
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