LXR linux/tools/perf/scripts/perl/check-perf-trace.pl

   1# perf script event handlers, generated by perf script -g perl
   2# (c) 2009, Tom Zanussi <tzanussi@gmail.com>
   3# Licensed under the terms of the GNU GPL License version 2
   4
   5# This script tests basic functionality such as flag and symbol
   6# strings, common_xxx() calls back into perf, begin, end, unhandled
   7# events, etc.  Basically, if this script runs successfully and
   8# displays expected results, perl scripting support should be ok.
   9
  10use lib "$ENV{'PERF_EXEC_PATH'}/scripts/perl/Perf-Trace-Util/lib";
  11use lib "./Perf-Trace-Util/lib";
  12use Perf::Trace::Core;
  13use Perf::Trace::Context;
  14use Perf::Trace::Util;
  15
  16sub trace_begin
  17{
  18    print "trace_begin\n";
  19}
  20
  21sub trace_end
  22{
  23    print "trace_end\n";
  24
  25    print_unhandled();
  26}
  27
  28sub irq::softirq_entry
  29{
  30        my ($event_name, $context, $common_cpu, $common_secs, $common_nsecs,
  31            $common_pid, $common_comm,
  32            $vec) = @_;
  33
  34        print_header($event_name, $common_cpu, $common_secs, $common_nsecs,
  35                     $common_pid, $common_comm);
  36
  37        print_uncommon($context);
  38
  39        printf("vec=%s\n",
  40               symbol_str("irq::softirq_entry", "vec", $vec));
  41}
  42
  43sub kmem::kmalloc
  44{
  45        my ($event_name, $context, $common_cpu, $common_secs, $common_nsecs,
  46            $common_pid, $common_comm,
  47            $call_site, $ptr, $bytes_req, $bytes_alloc,
  48            $gfp_flags) = @_;
  49
  50        print_header($event_name, $common_cpu, $common_secs, $common_nsecs,
  51                     $common_pid, $common_comm);
  52
  53        print_uncommon($context);
  54
  55        printf("call_site=%p, ptr=%p, bytes_req=%u, bytes_alloc=%u, ".
  56               "gfp_flags=%s\n",
  57               $call_site, $ptr, $bytes_req, $bytes_alloc,
  58
  59               flag_str("kmem::kmalloc", "gfp_flags", $gfp_flags));
  60}
  61
  62# print trace fields not included in handler args
  63sub print_uncommon
  64{
  65    my ($context) = @_;
  66
  67    printf("common_preempt_count=%d, common_flags=%s, common_lock_depth=%d, ",
  68           common_pc($context), trace_flag_str(common_flags($context)),
  69           common_lock_depth($context));
  70
  71}
  72
  73my %unhandled;
  74
  75sub print_unhandled
  76{
  77    if ((scalar keys %unhandled) == 0) {
  78        return;
  79    }
  80
  81    print "\nunhandled events:\n\n";
  82
  83    printf("%-40s  %10s\n", "event", "count");
  84    printf("%-40s  %10s\n", "----------------------------------------",
  85           "-----------");
  86
  87    foreach my $event_name (keys %unhandled) {
  88        printf("%-40s  %10d\n", $event_name, $unhandled{$event_name});
  89    }
  90}
  91
  92sub trace_unhandled
  93{
  94    my ($event_name, $context, $common_cpu, $common_secs, $common_nsecs,
  95        $common_pid, $common_comm) = @_;
  96
  97    $unhandled{$event_name}++;
  98}
  99
 100sub print_header
 101{
 102        my ($event_name, $cpu, $secs, $nsecs, $pid, $comm) = @_;
 103
 104        printf("%-20s %5u %05u.%09u %8u %-20s ",
 105               $event_name, $cpu, $secs, $nsecs, $pid, $comm);
 106}
 107