perf trace: Don't supress zeroed args when there is an strarray entry for it
Case in hand:
9.682 ( 0.001 ms): Xorg/13079 setitimer(which: REAL, value: 0x7fffede42470) = 0
ITIMER_REAL is zero.
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-6hnoqsjh99t4hxi3xu2nlwep@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
index 8855207..27b0ec8 100644
--- a/tools/perf/builtin-trace.c
+++ b/tools/perf/builtin-trace.c
@@ -940,8 +940,15 @@
field = field->next, ++arg.idx, bit <<= 1) {
if (arg.mask & bit)
continue;
-
- if (args[arg.idx] == 0)
+ /*
+ * Suppress this argument if its value is zero and
+ * and we don't have a string associated in an
+ * strarray for it.
+ */
+ if (args[arg.idx] == 0 &&
+ !(sc->arg_scnprintf &&
+ sc->arg_scnprintf[arg.idx] == SCA_STRARRAY &&
+ sc->arg_parm[arg.idx]))
continue;
printed += scnprintf(bf + printed, size - printed,