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perf/trace/scripting: failed-syscalls script cleanup

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A couple small fixes for the failed syscalls script:

- The script description says it can be restricted to a specific comm,
  make it so.

- silence the match output in the shell script

Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
LKML-Reference: <1273466820-9330-2-git-send-email-tzanussi@gmail.com>
Signed-off-by: Tom Zanussi <tzanussi@gmail.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Tom Zanussi 2010-05-09 23:46:52 -05:00 committed by Arnaldo Carvalho de Melo
parent fefb0b94bb
commit c3f5fd287a
2 changed files with 6 additions and 2 deletions
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2
tools/perf/scripts/perl/bin/failed-syscalls-report
View File

@ -2,7 +2,7 @@
# description: system-wide failed syscalls
# args: [comm]
if [ $# -gt 0 ] ; then
if ! expr match "$1" "-" ; then
if ! expr match "$1" "-" > /dev/null ; then
comm=$1
shift
fi

6
tools/perf/scripts/perl/failed-syscalls.pl
View File

@ -11,6 +11,8 @@ use Perf::Trace::Core;
use Perf::Trace::Context;
use Perf::Trace::Util;
my $for_comm = shift;
my %failed_syscalls;
sub raw_syscalls::sys_exit
@ -33,6 +35,8 @@ sub trace_end
foreach my $comm (sort {$failed_syscalls{$b} <=> $failed_syscalls{$a}}
keys %failed_syscalls) {
printf("%-20s %10s\n", $comm, $failed_syscalls{$comm});
next if ($for_comm && $comm ne $for_comm);
printf("%-20s %10s\n", $comm, $failed_syscalls{$comm});
}
}