APIs for kernel tracing histograms have been added.
Here we add the corresponding test cases.
Signed-off-by: Yordan Karadzhov (VMware) <y.karadz@xxxxxxxxx>
---
.../tests/1_unit/test_01_ftracepy_unit.py | 102 ++++++++++++++++++
1 file changed, 102 insertions(+)
diff --git a/tracecruncher/tests/1_unit/test_01_ftracepy_unit.py b/tracecruncher/tests/1_unit/test_01_ftracepy_unit.py
index 8a5881e..7b344e2 100644
--- a/tracecruncher/tests/1_unit/test_01_ftracepy_unit.py
+++ b/tracecruncher/tests/1_unit/test_01_ftracepy_unit.py
@@ -480,5 +480,107 @@ class TracingOnTestCase(unittest.TestCase):
self.assertTrue(err in str(context.exception))
+class HistTestCase(unittest.TestCase):
+ def test_hist_create(self):
+ inst = ft.create_instance(instance_name)
+ sys = 'kmem'
+ evt = 'kmalloc'
+ tgr_file = inst.dir() + '/events/' + sys + '/' + evt + '/trigger'
+
+ f = open(tgr_file)
+
+ hist = ft.hist(system=sys, event=evt, key='call_site', type='sym')
+ hist.stop(inst)
+ h_buff = f.read()
+ self.assertTrue('hist:keys=call_site.sym' in h_buff)
+ hist.close(inst)
+
+ hist = ft.hist(system=sys, event=evt,
+ axes={'call_site': 'sym',
+ 'bytes_alloc': 'n'})
+ hist.stop(inst)
+ f.seek(0)
+ h_buff = f.read()
+ self.assertTrue('hist:keys=call_site.sym,bytes_alloc' in h_buff)
+ hist.close(inst)
+
+ hist = ft.hist(name='h2d', system=sys, event=evt,
+ axes={'bytes_req': 'log',
+ 'bytes_alloc': 'h'})
+ hist.stop(inst)
+ f.seek(0)
+ h_buff = f.read()
+ self.assertTrue('hist:name=h2d:keys=bytes_req.log2,bytes_alloc.hex' in h_buff)
+
+ hist.close(inst)
+ f.close()
+
+ def test_hist_setup(self):
+ inst = ft.create_instance(instance_name)
+ sys = 'kmem'
+ evt = 'kmalloc'
+ tgr_file = inst.dir() + '/events/' + sys + '/' + evt + '/trigger'
+
+ f = open(tgr_file)
+
+ hist = ft.hist(system=sys, event=evt,
+ axes={'call_site': 'sym',
+ 'bytes_alloc': 'n'})
+
+ hist.add_value(value='bytes_req')
+ hist.stop(inst)
+ h_buff = f.read()
+ self.assertTrue(':vals=hitcount,bytes_req' in h_buff)
+
+ hist.sort_keys(keys=['bytes_req', 'bytes_alloc'])
+ hist.stop(inst)
+ f.seek(0)
+ h_buff = f.read()
+ self.assertTrue(':sort=bytes_req,bytes_alloc' in h_buff)
+
+ hist.sort_key_direction('bytes_req', 'desc')
+ hist.stop(inst)
+ f.seek(0)
+ h_buff = f.read()
+ self.assertTrue(':sort=bytes_req.descending,bytes_alloc' in str(h_buff))
+
+ hist.close(inst)
+ f.close()
+
+ def test_hist_ctrl(self):
+ inst = ft.create_instance(instance_name)
+ sys = 'kmem'
+ evt = 'kmalloc'
+ tgr_file = inst.dir() + '/events/' + sys + '/' + evt + '/trigger'
+
+ f = open(tgr_file)
+
+ hist = ft.hist(system=sys, event=evt,
+ axes={'call_site': 'sym',
+ 'bytes_alloc': 'n'})
+
+ hist.start(inst)
+ h_buff = f.read()
+ self.assertTrue('[active]' in h_buff)
+
+ hist.stop(inst)
+ f.seek(0)
+ h_buff = f.read()
+ self.assertTrue('[paused]' in h_buff)
+
+ hist.resume(inst)
+ f.seek(0)
+ h_buff = f.read()
+ self.assertTrue('[active]' in h_buff)
+
+ h_buff = hist.read(inst)
+ self.assertTrue('Totals:' in h_buff)
+
+ hist.close(inst)
+ f.seek(0)
+ h_buff = f.read()
+ self.assertTrue('Available triggers:' in h_buff)
+ f.close()
+
if __name__ == '__main__':
unittest.main()
--
2.32.0
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