linux-kernel - [PATCH v2 06/21] libtracefs: Add unit test to test tracefs

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Date:   Tue,  3 Aug 2021 00:23:32 -0400
From:   Steven Rostedt <rostedt@...dmis.org>
To:     linux-trace-devel@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org, Tom Zanussi <zanussi@...nel.org>,
        Daniel Bristot de Oliveira <bristot@...hat.com>,
        Masami Hiramatsu <mhiramat@...nel.org>,
        Namhyung Kim <namhyung@...nel.org>,
        linux-rt-users <linux-rt-users@...r.kernel.org>,
        Clark Williams <williams@...hat.com>,
        "Steven Rostedt (VMware)" <rostedt@...dmis.org>
Subject: [PATCH v2 06/21] libtracefs: Add unit test to test tracefs_sql() where clause

From: "Steven Rostedt (VMware)" <rostedt@...dmis.org>

Add a test to test filtering of events via the WHERE clause.

Signed-off-by: Steven Rostedt (VMware) <rostedt@...dmis.org>
---
 utest/tracefs-utest.c | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/utest/tracefs-utest.c b/utest/tracefs-utest.c
index f4e1a6b90a46..645c84c31f0e 100644
--- a/utest/tracefs-utest.c
+++ b/utest/tracefs-utest.c
@@ -53,6 +53,13 @@
 #define SQL_3_EVENT	"wakeup_lat"
 #define SQL_3_SQL	"select start.pid, end.next_prio as prio, (end.TIMESTAMP_USECS - start.TIMESTAMP_USECS) as lat from sched_waking as start join sched_switch as end on start.pid = end.next_pid"
 
+#define SQL_4_EVENT	"wakeup_lat_2"
+#define SQL_4_SQL	"select start.pid, end.next_prio as prio, (end.TIMESTAMP_USECS - start.TIMESTAMP_USECS) as lat from sched_waking as start join sched_switch as end on start.pid = end.next_pid where (start.prio >= 1 && start.prio < 100) || !(start.pid >= 0 && start.pid <= 1) && end.prev_pid != 0"
+
+#define SQL_5_EVENT	"irq_lat"
+#define SQL_5_SQL	"select end.common_pid as pid, (end.common_timestamp.usecs - start.common_timestamp.usecs) as irq_lat from irq_disable as start join irq_enable as end on start.common_pid = end.common_pid, start.parent_offs == end.parent_offs where start.common_pid != 0"
+#define SQL_5_START	"irq_disable"
+
 static struct tracefs_instance *test_instance;
 static struct tep_handle *test_tep;
 struct test_sample {
@@ -336,6 +343,7 @@ static void test_instance_trace_sql(struct tracefs_instance *instance)
 	struct tracefs_synth *synth;
 	struct trace_seq seq;
 	struct tep_handle *tep;
+	struct tep_event *event;
 	int ret;
 
 	tep = tracefs_local_events(NULL);
@@ -364,6 +372,23 @@ static void test_instance_trace_sql(struct tracefs_instance *instance)
 	tracefs_synth_free(synth);
 	trace_seq_reset(&seq);
 
+	synth = tracefs_sql(tep, SQL_4_EVENT, SQL_4_SQL, NULL);
+	CU_TEST(synth != NULL);
+	ret = tracefs_synth_show(&seq, instance, synth);
+	CU_TEST(ret == 0);
+	tracefs_synth_free(synth);
+	trace_seq_reset(&seq);
+
+	event = tep_find_event_by_name(tep, NULL, SQL_5_START);
+	if (event) {
+		synth = tracefs_sql(tep, SQL_5_EVENT, SQL_5_SQL, NULL);
+		CU_TEST(synth != NULL);
+		ret = tracefs_synth_show(&seq, instance, synth);
+		CU_TEST(ret == 0);
+		tracefs_synth_free(synth);
+		trace_seq_reset(&seq);
+	}
+
 	tep_free(tep);
 	trace_seq_destroy(&seq);
 }
-- 
2.30.2