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