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, $common_callchain,
22 $id, $ret) = @_;
23
24 if ($ret < 0) {
25 $failed_syscalls{$common_comm}++;
26 }
27 }
28
29 sub syscalls::sys_exit
30 {
31 raw_syscalls::sys_exit(@_)
32 }
33
34 sub trace_end
35 {
36 printf("\nfailed syscalls by comm:\n\n");
37
38 printf("%-20s %10s\n", "comm", "# errors");
39 printf("%-20s %6s %10s\n", "--------------------", "----------");
40
41 foreach my $comm (sort {$failed_syscalls{$b} <=> $failed_syscalls{$a}}
42 keys %failed_syscalls) {
43 next if ($for_comm && $comm ne $for_comm);
44
45 printf("%-20s %10s\n", $comm, $failed_syscalls{$comm});
46 }
47 }
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