101 lines
3.7 KiB
Python
101 lines
3.7 KiB
Python
import lldb
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from intelpt_testcase import *
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from lldbsuite.test.lldbtest import *
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from lldbsuite.test import lldbutil
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from lldbsuite.test.decorators import *
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class TestTraceTimestampCounters(TraceIntelPTTestCaseBase):
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mydir = TestBase.compute_mydir(__file__)
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@testSBAPIAndCommands
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@skipIf(oslist=no_match(['linux']), archs=no_match(['i386', 'x86_64']))
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def testTscPerThread(self):
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self.expect("file " + os.path.join(self.getSourceDir(), "intelpt-trace", "a.out"))
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self.expect("b main")
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self.expect("r")
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self.traceStartThread(enableTsc=True)
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self.expect("n")
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self.expect("thread trace dump instructions --tsc -c 1",
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patterns=["\[0\] \[tsc=0x[0-9a-fA-F]+\] 0x0000000000400511 movl"])
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@testSBAPIAndCommands
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@skipIf(oslist=no_match(['linux']), archs=no_match(['i386', 'x86_64']))
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def testTscPerProcess(self):
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self.expect("file " + os.path.join(self.getSourceDir(), "intelpt-trace", "a.out"))
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self.expect("b main")
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self.expect("r")
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self.traceStartProcess(enableTsc=True)
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self.expect("n")
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self.expect("thread trace dump instructions --tsc -c 1",
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patterns=["\[0\] \[tsc=0x[0-9a-fA-F]+\] 0x0000000000400511 movl"])
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@testSBAPIAndCommands
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@skipIf(oslist=no_match(['linux']), archs=no_match(['i386', 'x86_64']))
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def testDumpingAfterTracingWithoutTsc(self):
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self.expect("file " + os.path.join(self.getSourceDir(), "intelpt-trace", "a.out"))
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self.expect("b main")
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self.expect("r")
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self.traceStartThread(enableTsc=False)
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self.expect("n")
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self.expect("thread trace dump instructions --tsc -c 1",
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patterns=["\[0\] \[tsc=unavailable\] 0x0000000000400511 movl"])
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@testSBAPIAndCommands
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@skipIf(oslist=no_match(['linux']), archs=no_match(['i386', 'x86_64']))
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def testPSBPeriod(self):
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def isPSBSupported():
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caps_file = "/sys/bus/event_source/devices/intel_pt/caps/psb_cyc"
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if not os.path.exists(caps_file):
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return False
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with open(caps_file, "r") as f:
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val = int(f.readline())
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if val != 1:
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return False
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return True
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def getValidPSBValues():
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values_file = "/sys/bus/event_source/devices/intel_pt/caps/psb_periods"
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values = []
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with open(values_file, "r") as f:
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mask = int(f.readline(), 16)
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for i in range(0, 32):
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if (1 << i) & mask:
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values.append(i)
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return values
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if not isPSBSupported():
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self.skipTest("PSB period unsupported")
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valid_psb_values = getValidPSBValues()
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# 0 should always be valid, and it's assumed by lldb-server
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self.assertEqual(valid_psb_values[0], 0)
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self.expect("file " + (os.path.join(self.getSourceDir(), "intelpt-trace", "a.out")))
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self.expect("b main")
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self.expect("r")
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# it's enough to test with two valid values
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for psb_period in (valid_psb_values[0], valid_psb_values[-1]):
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# we first test at thread level
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self.traceStartThread(psbPeriod=psb_period)
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self.traceStopThread()
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# we now test at process level
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self.traceStartProcess(psbPeriod=psb_period)
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self.traceStopProcess()
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# we now test invalid values
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self.traceStartThread(psbPeriod=valid_psb_values[-1] + 1, error=True,
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substrs=["Invalid psb_period. Valid values are: 0"])
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# TODO: dump the perf_event_attr.config as part of the upcoming "trace dump info"
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# command and check that the psb period is included there.
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