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 8use lib "$ENV{'PERF_EXEC_PATH'}/scripts/perl/Perf-Trace-Util/lib"; 9use lib "./Perf-Trace-Util/lib"; 10use Perf::Trace::Core; 11use Perf::Trace::Context; 12use Perf::Trace::Util; 13 14my $for_comm = shift; 15 16my %failed_syscalls; 17 18sub raw_syscalls::sys_exit 19{ 20 my ($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 29sub 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} 43