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authorArnaldo Carvalho de Melo <acme@redhat.com>2013-09-12 11:27:34 -0300
committerArnaldo Carvalho de Melo <acme@redhat.com>2013-10-09 11:11:06 -0300
commit22ae5cf1c9b4e27a3efe96d8fa6d038560a2cf23 (patch)
treec2608dcfff216af60a6e976b832694704a5a6beb /tools/perf
parent770480592084d2c114adedfbe6740e345aaf2279 (diff)
downloadop-kernel-dev-22ae5cf1c9b4e27a3efe96d8fa6d038560a2cf23.zip
op-kernel-dev-22ae5cf1c9b4e27a3efe96d8fa6d038560a2cf23.tar.gz
perf trace: Don't print zeroed args
This way we make the output more compact. If somebody complain (and provide a sane reason why we would like to see zeroes) we can make it an optional, ~/.perfconfig configurable knob. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-myqozw43hk8z2r5hsupzdk82@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf')
-rw-r--r--tools/perf/builtin-trace.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
index 903416c..516f6b3 100644
--- a/tools/perf/builtin-trace.c
+++ b/tools/perf/builtin-trace.c
@@ -818,6 +818,9 @@ static size_t syscall__scnprintf_args(struct syscall *sc, char *bf, size_t size,
if (arg.mask & bit)
continue;
+ if (args[arg.idx] == 0)
+ continue;
+
printed += scnprintf(bf + printed, size - printed,
"%s%s: ", printed ? ", " : "", field->name);
if (sc->arg_scnprintf && sc->arg_scnprintf[arg.idx]) {
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