perf test: Add test for the sched tracepoint format fields

So that we make sure the routines that do event format parsing are
working on at least two well know scheduler tracepoints.

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: Namhyung Kim <namhyung@gmail.com>
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-g3rm9b3wtim4djx3z8dkftrj@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

1 files changed, 86 insertions, 0 deletions

diff --git a/tools/perf/builtin-test.c b/tools/perf/builtin-test.c
index 4aed1553db56..32caf13cfe01 100644
--- a/tools/perf/builtin-test.c
+++ b/tools/perf/builtin-test.c
@@ -14,6 +14,7 @@
 #include "util/symbol.h"
 #include "util/thread_map.h"
 #include "util/pmu.h"
+#include "event-parse.h"
 #include "../../include/linux/hw_breakpoint.h"
 
 #include <sys/mman.h>
@@ -1207,6 +1208,87 @@ static int perf_evsel__roundtrip_name_test(void)
         return ret;
 }
 
+static int perf_evsel__test_field(struct perf_evsel *evsel, const char *name,
+                                  int size, bool should_be_signed)
+{
+        struct format_field *field = perf_evsel__field(evsel, name);
+        int is_signed;
+        int ret = 0;
+
+        if (field == NULL) {
+                pr_debug("%s: \"%s\" field not found!\n", evsel->name, name);
+                return -1;
+        }
+
+        is_signed = !!(field->flags | FIELD_IS_SIGNED);
+        if (should_be_signed && !is_signed) {
+                pr_debug("%s: \"%s\" signedness(%d) is wrong, should be %d\n",
+                         evsel->name, name, is_signed, should_be_signed);
+                ret = -1;
+        }
+
+        if (field->size != size) {
+                pr_debug("%s: \"%s\" size (%d) should be %d!\n",
+                         evsel->name, name, field->size, size);
+                ret = -1;
+        }
+
+        return 0;
+}
+
+static int perf_evsel__tp_sched_test(void)
+{
+        struct perf_evsel *evsel = perf_evsel__newtp("sched", "sched_switch", 0);
+        int ret = 0;
+
+        if (evsel == NULL) {
+                pr_debug("perf_evsel__new\n");
+                return -1;
+        }
+
+        if (perf_evsel__test_field(evsel, "prev_comm", 16, true))
+                ret = -1;
+
+        if (perf_evsel__test_field(evsel, "prev_pid", 4, true))
+                ret = -1;
+
+        if (perf_evsel__test_field(evsel, "prev_prio", 4, true))
+                ret = -1;
+
+        if (perf_evsel__test_field(evsel, "prev_state", 8, true))
+                ret = -1;
+
+        if (perf_evsel__test_field(evsel, "next_comm", 16, true))
+                ret = -1;
+
+        if (perf_evsel__test_field(evsel, "next_pid", 4, true))
+                ret = -1;
+
+        if (perf_evsel__test_field(evsel, "next_prio", 4, true))
+                ret = -1;
+
+        perf_evsel__delete(evsel);
+
+        evsel = perf_evsel__newtp("sched", "sched_wakeup", 0);
+
+        if (perf_evsel__test_field(evsel, "comm", 16, true))
+                ret = -1;
+
+        if (perf_evsel__test_field(evsel, "pid", 4, true))
+                ret = -1;
+
+        if (perf_evsel__test_field(evsel, "prio", 4, true))
+                ret = -1;
+
+        if (perf_evsel__test_field(evsel, "success", 4, true))
+                ret = -1;
+
+        if (perf_evsel__test_field(evsel, "target_cpu", 4, true))
+                ret = -1;
+
+        return 0;
+}
+
 static struct test {
         const char *desc;
         int (*func)(void);
@@ -1254,6 +1336,10 @@ static struct test {
                 .func = perf_evsel__roundtrip_name_test,
         },
         {
+                .desc = "Check parsing of sched tracepoints fields",
+                .func = perf_evsel__tp_sched_test,
+        },
+        {
                 .func = NULL,
         },
 };