tools/perf/scripts/perl/failed-syscalls.pl

   1 # failed system call counts
   2 # (c) 2010, Tom Zanussi <tzanussi@gmail.com>
   3 # Licensed under the terms of the GNU GPL License version 2
   4 #
   5 # Displays system-wide failed system call totals
   6 # If a [comm] arg is specified, only syscalls called by [comm] are displayed.
   7
   8 use lib "$ENV{'PERF_EXEC_PATH'}/scripts/perl/Perf-Trace-Util/lib";
   9 use lib "./Perf-Trace-Util/lib";
  10 use Perf::Trace::Core;
  11 use Perf::Trace::Context;
  12 use Perf::Trace::Util;
  13
  14 my $for_comm = shift;
  15
  16 my %failed_syscalls;
  17
  18 sub raw_syscalls::sys_exit
  19 {
  20         my ($event_name, $context, $common_cpu, $common_secs, $common_nsecs,
  21             $common_pid, $common_comm,
  22             $id, $ret) = @_;
  23
  24         if ($ret < 0) {
  25             $failed_syscalls{$common_comm}++;
  26         }
  27 }
  28
  29 sub trace_end
  30 {
  31     printf("\nfailed syscalls by comm:\n\n");
  32
  33     printf("%-20s  %10s\n", "comm", "# errors");
  34     printf("%-20s  %6s  %10s\n", "--------------------", "----------");
  35
  36     foreach my $comm (sort {$failed_syscalls{$b} <=> $failed_syscalls{$a}}
  37                       keys %failed_syscalls) {
  38         next if ($for_comm && $comm ne $for_comm);
  39
  40         printf("%-20s  %10s\n", $comm, $failed_syscalls{$comm});
  41     }
  42 }