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runtime selftest: test_trace_events_sample of ksample.py

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The debug info can not be written to trace buffer immediately
by thread. So we should sleep some seconds.

(From OE-Core rev: 5ccf8150b4c65f2feac16cc2881188f14d9e5390)

Signed-off-by: Hongzhi.Song <hongzhi.song@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Hongzhi.Song
2018-08-16 00:38:47 -07:00
committed by Richard Purdie
parent 371283df2e
commit 742a801536
1 changed files with 12 additions and 2 deletions
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meta/lib/oeqa/runtime/cases/ksample.py
+12 -2
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@@ -18,7 +18,8 @@ class KSample(OERuntimeTestCase):
else:
# check result
result = ("%s" % match_string) in output
self.assertTrue(result)
msg = output
self.assertTrue(result, msg)
self.assertEqual(status, 0, cmd)
def check_config(self, config_opt=''):
@@ -126,7 +127,16 @@ class KSampleTest(KSample):
self.cmd_and_check("echo 1 > /sys/kernel/debug/tracing/events/sample-trace/enable")
self.cmd_and_check("cat /sys/kernel/debug/tracing/events/sample-trace/enable")
# check result
self.cmd_and_check("cat /sys/kernel/debug/tracing/trace | grep hello | head -n1 | cut -d\':\' -f2", " foo_bar")
status = 1
count = 0
while status != 0:
time.sleep(1)
status, output = self.target.run('cat /sys/kernel/debug/tracing/trace | grep hello | head -n1 | cut -d\':\' -f2')
if " foo_bar" in output:
break
count = count + 1
if count > 5:
self.assertTrue(False, "Time out when check result")
# disable trace
self.cmd_and_check("echo 0 > /sys/kernel/debug/tracing/events/sample-trace/enable")
# clean up trace