perf/trace/scripting: failed-syscalls script cleanup
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>
diff --git a/tools/perf/scripts/perl/bin/failed-syscalls-report b/tools/perf/scripts/perl/bin/failed-syscalls-report
index f634608..e3a5e55 100644
--- a/tools/perf/scripts/perl/bin/failed-syscalls-report
+++ b/tools/perf/scripts/perl/bin/failed-syscalls-report
@@ -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