[lttng-dev] [PATCH lttng-tools] Fix: test code assumes that child process is schedule to run before parent - Anders Wallin via lttng-dev

From: Anders Wallin via lttng-dev <lttng-dev@lists.lttng.org>
To: lttng-dev@lists.lttng.org
Subject: [lttng-dev] [PATCH lttng-tools] Fix: test code assumes that child process is schedule to run before parent
Date: Wed, 31 Mar 2021 20:56:24 +0200	[thread overview]
Message-ID: <20210331185624.406960-1-wallinux@gmail.com> (raw)

the following tests fails on arm64
- test_event_vpid_tracker ust 0 "${EVENT_NAME}"
- test_event_vpid_track_untrack ust 0 "${EVENT_NAME}"
- test_event_pid_tracker ust 0 "${EVENT_NAME}"
- test_event_pid_track_untrack ust 0 "${EVENT_NAME}"

Signed-off-by: Anders Wallin <wallinux@gmail.com>
---
 tests/regression/tools/tracker/test_event_tracker | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/tests/regression/tools/tracker/test_event_tracker b/tests/regression/tools/tracker/test_event_tracker
index 711690af..649c7e61 100755
--- a/tests/regression/tools/tracker/test_event_tracker
+++ b/tests/regression/tools/tracker/test_event_tracker
@@ -5,7 +5,7 @@
 #
 # SPDX-License-Identifier: GPL-2.0-only
 
-TEST_DESC="LTTng - Event traker test"
+TEST_DESC="LTTng - Event tracker test"
 
 CURDIR=$(dirname "$0")/
 TESTDIR="$CURDIR/../../.."
@@ -42,6 +42,8 @@ function prepare_ust_app
 
 	$TESTAPP_BIN -i $NR_ITER -w $NR_USEC_WAIT -a "$AFTER_FIRST_PATH" -b "$BEFORE_LAST_PATH" &
 	CHILD_PID=$!
+	# voluntary context switch to start $TESTAPP_BIN
+	sleep 0.1
 }
 
 function trace_ust_app
-- 
2.31.1

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