perf stat: Add event parsing error handling to add_default_attributes

Add missing error handling for parse_events calls in add_default_attributes
functions. The error handler displays error details, like for transactions (-T):

Before:
  $ perf stat -T
  Cannot set up transaction events

After:
  $ perf stat -T
  Cannot set up transaction events
  event syntax error: '..cycles,cpu/cycles-t/,cpu/tx-start/,cpu/el-start/,cpu/cycles-ct/}'
                                    \___ unknown term

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <frederic@kernel.org>
Cc: Milian Wolff <milian.wolff@kdab.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/20180606221513.11302-8-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

1 files changed, 6 insertions, 4 deletions

diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c
index 3fc1f5286d50..22547a490e1f 100644
--- a/tools/perf/builtin-stat.c
+++ b/tools/perf/builtin-stat.c
@@ -2442,14 +2442,13 @@ static int add_default_attributes(void)
         (PERF_COUNT_HW_CACHE_OP_PREFETCH        <<  8) |
         (PERF_COUNT_HW_CACHE_RESULT_MISS        << 16)                          },
 };
+        struct parse_events_error errinfo;
 
         /* Set attrs if no event is selected and !null_run: */
         if (null_run)
                 return 0;
 
         if (transaction_run) {
-                struct parse_events_error errinfo;
-
                 if (pmu_have_event("cpu", "cycles-ct") &&
                     pmu_have_event("cpu", "el-start"))
                         err = parse_events(evsel_list, transaction_attrs,
@@ -2460,6 +2459,7 @@ static int add_default_attributes(void)
                                            &errinfo);
                 if (err) {
                         fprintf(stderr, "Cannot set up transaction events\n");
+                        parse_events_print_error(&errinfo, transaction_attrs);
                         return -1;
                 }
                 return 0;
@@ -2485,10 +2485,11 @@ static int add_default_attributes(void)
                     pmu_have_event("msr", "smi")) {
                         if (!force_metric_only)
                                 metric_only = true;
-                        err = parse_events(evsel_list, smi_cost_attrs, NULL);
+                        err = parse_events(evsel_list, smi_cost_attrs, &errinfo);
                 } else {
                         fprintf(stderr, "To measure SMI cost, it needs "
                                 "msr/aperf/, msr/smi/ and cpu/cycles/ support\n");
+                        parse_events_print_error(&errinfo, smi_cost_attrs);
                         return -1;
                 }
                 if (err) {
@@ -2523,12 +2524,13 @@ static int add_default_attributes(void)
                 if (topdown_attrs[0] && str) {
                         if (warn)
                                 arch_topdown_group_warn();
-                        err = parse_events(evsel_list, str, NULL);
+                        err = parse_events(evsel_list, str, &errinfo);
                         if (err) {
                                 fprintf(stderr,
                                         "Cannot set up top down events %s: %d\n",
                                         str, err);
                                 free(str);
+                                parse_events_print_error(&errinfo, str);
                                 return -1;
                         }
                 } else {